refator: reports to nestjs

packages/server-nest/src/modules/FinancialStatements/FinancialStatements.module.ts

@@ -3,11 +3,15 @@ import { PurchasesByItemsModule } from './modules/PurchasesByItems/PurchasesByIt
 import { CustomerBalanceSummaryModule } from './modules/CustomerBalanceSummary/CustomerBalanceSummary.module';
 import { SalesByItemsModule } from './modules/SalesByItems/SalesByItems.module';
 import { GeneralLedgerModule } from './modules/GeneralLedger/GeneralLedger.module';
-import { TransactionsByCustomerModule } from './modules/TransactionsByCustomer/TransactionsByCustomer.module';
 import { TrialBalanceSheetModule } from './modules/TrialBalanceSheet/TrialBalanceSheet.module';
-import { TransactionsByReferenceModule } from './modules/TransactionsByReference/TransactionByReference.module';
 import { TransactionsByVendorModule } from './modules/TransactionsByVendor/TransactionsByVendor.module';
-// 
+import { TransactionsByCustomerModule } from './modules/TransactionsByCustomer/TransactionsByCustomer.module';
+import { TransactionsByReferenceModule } from './modules/TransactionsByReference/TransactionByReference.module';
+import { ARAgingSummaryModule } from './modules/ARAgingSummary/ARAgingSummary.module';
+import { APAgingSummaryModule } from './modules/APAgingSummary/APAgingSummary.module';
+import { InventoryItemDetailsModule } from './modules/InventoryItemDetails/InventoryItemDetails.module';
+import { InventoryValuationSheetModule } from './modules/InventoryValuationSheet/InventoryValuationSheet.module';
+
 @Module({
   providers: [],
   imports: [
@@ -16,12 +20,13 @@ import { TransactionsByVendorModule } from './modules/TransactionsByVendor/Trans
     SalesByItemsModule,
     GeneralLedgerModule,
     TrialBalanceSheetModule,
-    TransactionsByCustomerModule,
     TransactionsByVendorModule,
-    // TransactionsByReferenceModule,
-    // TransactionsByVendorModule,
-    // TransactionsByContactModule,
+    TransactionsByCustomerModule,
+    TransactionsByReferenceModule,
+    ARAgingSummaryModule,
+    APAgingSummaryModule,
+    InventoryItemDetailsModule,
+    InventoryValuationSheetModule,
   ],
 })
 export class FinancialStatementsModule {}
-

packages/server-nest/src/modules/FinancialStatements/common/FinancialSheet.ts

@@ -1,8 +1,7 @@
-import moment from 'moment';
+import * as moment from 'moment';
 import {
   IFormatNumberSettings,
   INumberFormatQuery,
-  
 } from '../types/Report.types';
 import { formatNumber } from '@/utils/format-number';
 import { IFinancialTableTotal } from '../types/Table.types';
@@ -41,7 +40,7 @@ export class FinancialSheet {
    */
   protected formatNumber(
     number,
-    overrideSettings: IFormatNumberSettings = {}
+    overrideSettings: IFormatNumberSettings = {},
   ): string {
     const settings = {
       ...this.transfromFormatQueryToSettings(),
@@ -57,7 +56,7 @@ export class FinancialSheet {
    */
   protected formatTotalNumber = (
     amount: number,
-    settings: IFormatNumberSettings = {}
+    settings: IFormatNumberSettings = {},
   ): string => {
     const { numberFormat } = this;
 
@@ -75,7 +74,7 @@ export class FinancialSheet {
    */
   protected formatPercentage = (
     amount: number,
-    overrideSettings: IFormatNumberSettings = {}
+    overrideSettings: IFormatNumberSettings = {},
   ): string => {
     const percentage = amount * 100;
     const settings = {
@@ -94,7 +93,7 @@ export class FinancialSheet {
    */
   protected formatTotalPercentage = (
     amount: number,
-    settings: IFormatNumberSettings = {}
+    settings: IFormatNumberSettings = {},
   ): string => {
     return this.formatPercentage(amount, {
       ...settings,
@@ -109,7 +108,7 @@ export class FinancialSheet {
    */
   protected getAmountMeta(
     amount: number,
-    overrideSettings?: IFormatNumberSettings
+    overrideSettings?: IFormatNumberSettings,
   ): IFinancialTableTotal {
     return {
       amount,
@@ -125,7 +124,7 @@ export class FinancialSheet {
    */
   protected getTotalAmountMeta(
     amount: number,
-    title?: string
+    title?: string,
   ): IFinancialTableTotal {
     return {
       ...(title ? { title } : {}),

packages/server-nest/src/modules/FinancialStatements/modules/APAgingSummary/APAgingSummary.controller.ts

@@ -0,0 +1,56 @@
+import { Controller, Get, Headers, Query, Res } from '@nestjs/common';
+import { APAgingSummaryApplication } from './APAgingSummaryApplication';
+import { IAPAgingSummaryQuery } from './APAgingSummary.types';
+import { AcceptType } from '@/constants/accept-type';
+import { Response } from 'express';
+
+@Controller('reports/payable-aging-summary')
+export class APAgingSummaryController {
+  constructor(private readonly APAgingSummaryApp: APAgingSummaryApplication) {}
+
+  @Get()
+  public async get(
+    @Query() filter: IAPAgingSummaryQuery,
+    @Res() res: Response,
+    @Headers('accept') acceptHeader: string,
+  ) {
+    // Retrieves the json table format.
+    if (acceptHeader.includes(AcceptType.ApplicationJsonTable)) {
+      const table = await this.APAgingSummaryApp.table(filter);
+
+      return res.status(200).send(table);
+      // Retrieves the csv format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationCsv)) {
+      const csv = await this.APAgingSummaryApp.csv(filter);
+
+      res.setHeader('Content-Disposition', 'attachment; filename=output.csv');
+      res.setHeader('Content-Type', 'text/csv');
+
+      return res.send(csv);
+      // Retrieves the xlsx format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationXlsx)) {
+      const buffer = await this.APAgingSummaryApp.xlsx(filter);
+
+      res.setHeader('Content-Disposition', 'attachment; filename=output.xlsx');
+      res.setHeader(
+        'Content-Type',
+        'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+      );
+      return res.send(buffer);
+      // Retrieves the pdf format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationPdf)) {
+      const pdfContent = await this.APAgingSummaryApp.pdf(filter);
+
+      res.set({
+        'Content-Type': 'application/pdf',
+        'Content-Length': pdfContent.length,
+      });
+      return res.send(pdfContent);
+      // Retrieves the json format.
+    } else {
+      const sheet = await this.APAgingSummaryApp.sheet(filter);
+
+      return res.status(200).send(sheet);
+    }
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/APAgingSummary/APAgingSummary.module.ts

@@ -0,0 +1,24 @@
+import { Module } from '@nestjs/common';
+import { APAgingSummaryService } from './APAgingSummaryService';
+import { AgingSummaryModule } from '../AgingSummary/AgingSummary.module';
+import { APAgingSummaryTableInjectable } from './APAgingSummaryTableInjectable';
+import { APAgingSummaryExportInjectable } from './APAgingSummaryExportInjectable';
+import { APAgingSummaryPdfInjectable } from './APAgingSummaryPdfInjectable';
+import { APAgingSummaryRepository } from './APAgingSummaryRepository';
+import { APAgingSummaryApplication } from './APAgingSummaryApplication';
+import { APAgingSummaryController } from './APAgingSummary.controller';
+
+@Module({
+  imports: [AgingSummaryModule],
+  providers: [
+    APAgingSummaryService,
+    APAgingSummaryTableInjectable,
+    APAgingSummaryExportInjectable,
+    APAgingSummaryPdfInjectable,
+    APAgingSummaryRepository,
+    APAgingSummaryApplication
+  ],
+  controllers: [APAgingSummaryController],
+})
+export class APAgingSummaryModule {}
+

packages/server-nest/src/modules/FinancialStatements/modules/APAgingSummary/APAgingSummary.types.ts

@@ -0,0 +1,45 @@
+import { IFinancialSheetCommonMeta } from '../../types/Report.types';
+import { IFinancialTable } from '../../types/Table.types';
+import {
+  IAgingPeriod,
+  IAgingSummaryQuery,
+  IAgingSummaryTotal,
+  IAgingSummaryContact,
+  IAgingSummaryData,
+} from '../AgingSummary/AgingSummary.types';
+
+export interface IAPAgingSummaryQuery extends IAgingSummaryQuery {
+  vendorsIds: number[];
+}
+
+export interface IAPAgingSummaryVendor extends IAgingSummaryContact {
+  vendorName: string;
+}
+
+export interface IAPAgingSummaryTotal extends IAgingSummaryTotal {}
+
+export interface IAPAgingSummaryData extends IAgingSummaryData {
+  vendors: IAPAgingSummaryVendor[];
+}
+
+export type IAPAgingSummaryColumns = IAgingPeriod[];
+
+export interface IARAgingSummaryMeta extends IFinancialSheetCommonMeta {
+  formattedAsDate: string;
+}
+
+export interface IAPAgingSummaryMeta extends IFinancialSheetCommonMeta {
+  formattedAsDate: string;
+}
+
+export interface IAPAgingSummaryTable extends IFinancialTable {
+  query: IAPAgingSummaryQuery;
+  meta: IAPAgingSummaryMeta;
+}
+
+export interface IAPAgingSummarySheet {
+  data: IAPAgingSummaryData;
+  meta: IAPAgingSummaryMeta;
+  query: IAPAgingSummaryQuery;
+  columns: any;
+}

packages/server-nest/src/modules/FinancialStatements/modules/APAgingSummary/APAgingSummaryApplication.ts

@@ -0,0 +1,57 @@
+import { APAgingSummaryExportInjectable } from './APAgingSummaryExportInjectable';
+import { APAgingSummaryTableInjectable } from './APAgingSummaryTableInjectable';
+import { IAPAgingSummaryQuery } from './APAgingSummary.types';
+import { APAgingSummaryService } from './APAgingSummaryService';
+import { APAgingSummaryPdfInjectable } from './APAgingSummaryPdfInjectable';
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class APAgingSummaryApplication {
+  constructor(
+    private readonly APAgingSummaryTable: APAgingSummaryTableInjectable,
+    private readonly APAgingSummaryExport: APAgingSummaryExportInjectable,
+    private readonly APAgingSummarySheet: APAgingSummaryService,
+    private readonly APAgingSumaryPdf: APAgingSummaryPdfInjectable,
+  ) {}
+
+  /**
+   * Retrieve the A/P aging summary in sheet format.
+   * @param {IAPAgingSummaryQuery} query
+   */
+  public sheet(query: IAPAgingSummaryQuery) {
+    return this.APAgingSummarySheet.APAgingSummary(query);
+  }
+
+  /**
+   * Retrieve the A/P aging summary in table format.
+   * @param {IAPAgingSummaryQuery} query
+   */
+  public table(query: IAPAgingSummaryQuery) {
+    return this.APAgingSummaryTable.table(query);
+  }
+
+  /**
+   * Retrieve the A/P aging summary in CSV format.
+   * @param {IAPAgingSummaryQuery} query
+   */
+  public csv(query: IAPAgingSummaryQuery) {
+    return this.APAgingSummaryExport.csv(query);
+  }
+
+  /**
+   * Retrieve the A/P aging summary in XLSX format.
+   * @param {IAPAgingSummaryQuery} query
+   */
+  public xlsx(query: IAPAgingSummaryQuery) {
+    return this.APAgingSummaryExport.xlsx(query);
+  }
+
+  /**
+   * Retrieves the A/P aging summary in pdf format.
+   * @param {IAPAgingSummaryQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public pdf(query: IAPAgingSummaryQuery) {
+    return this.APAgingSumaryPdf.pdf(query);
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/APAgingSummary/APAgingSummaryExportInjectable.ts

@@ -0,0 +1,39 @@
+import { Injectable } from '@nestjs/common';
+import { TableSheet } from '../../common/TableSheet';
+import { IAPAgingSummaryQuery } from './APAgingSummary.types';
+import { APAgingSummaryTableInjectable } from './APAgingSummaryTableInjectable';
+
+@Injectable()
+export class APAgingSummaryExportInjectable {
+  constructor(
+    private readonly APAgingSummaryTable: APAgingSummaryTableInjectable,
+  ) {}
+
+  /**
+   * Retrieves the A/P aging summary sheet in XLSX format.
+   * @param {IAPAgingSummaryQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public async xlsx(query: IAPAgingSummaryQuery) {
+    const table = await this.APAgingSummaryTable.table(query);
+
+    const tableSheet = new TableSheet(table.table);
+    const tableCsv = tableSheet.convertToXLSX();
+
+    return tableSheet.convertToBuffer(tableCsv, 'xlsx');
+  }
+
+  /**
+   * Retrieves the A/P aging summary sheet in CSV format.
+   * @param {IAPAgingSummaryQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public async csv(query: IAPAgingSummaryQuery): Promise<string> {
+    const table = await this.APAgingSummaryTable.table(query);
+
+    const tableSheet = new TableSheet(table.table);
+    const tableCsv = tableSheet.convertToCSV();
+
+    return tableCsv;
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/APAgingSummary/APAgingSummaryMeta.ts

@@ -0,0 +1,24 @@
+import { Injectable } from '@nestjs/common';
+import {
+  IAgingSummaryMeta,
+  IAgingSummaryQuery,
+} from '../AgingSummary/AgingSummary.types';
+import { AgingSummaryMeta } from '../AgingSummary/AgingSummaryMeta';
+
+@Injectable()
+export class APAgingSummaryMeta {
+  constructor(private readonly agingSummaryMeta: AgingSummaryMeta) {}
+
+  /**
+   * Retrieve the aging summary meta.
+   * @returns {IBalanceSheetMeta}
+   */
+  public async meta(query: IAgingSummaryQuery): Promise<IAgingSummaryMeta> {
+    const commonMeta = await this.agingSummaryMeta.meta(query);
+
+    return {
+      ...commonMeta,
+      sheetName: 'A/P Aging Summary',
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/APAgingSummary/APAgingSummaryPdfInjectable.ts

@@ -0,0 +1,29 @@
+import { TableSheetPdf } from '../../common/TableSheetPdf';
+import { HtmlTableCss } from '../AgingSummary/_constants';
+import { IAPAgingSummaryQuery } from './APAgingSummary.types';
+import { APAgingSummaryTableInjectable } from './APAgingSummaryTableInjectable';
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class APAgingSummaryPdfInjectable {
+  constructor(
+    private readonly APAgingSummaryTable: APAgingSummaryTableInjectable,
+    private readonly tableSheetPdf: TableSheetPdf,
+  ) {}
+
+  /**
+   * Converts the given A/P aging summary sheet table to pdf.
+   * @param {IAPAgingSummaryQuery} query - Balance sheet query.
+   * @returns {Promise<Buffer>}
+   */
+  public async pdf(query: IAPAgingSummaryQuery): Promise<Buffer> {
+    const table = await this.APAgingSummaryTable.table(query);
+
+    return this.tableSheetPdf.convertToPdf(
+      table.table,
+      table.meta.sheetName,
+      table.meta.formattedAsDate,
+      HtmlTableCss,
+    );
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/APAgingSummary/APAgingSummaryRepository.ts

@@ -0,0 +1,35 @@
+
+
+
+export class APAgingSummaryRepository {
+
+
+  asyncInit() {
+    // Settings tenant service.
+    const tenant = await Tenant.query()
+      .findById(tenantId)
+      .withGraphFetched('metadata');
+
+    // Retrieve all vendors from the storage.
+    const vendors =
+      filter.vendorsIds.length > 0
+        ? await vendorRepository.findWhereIn('id', filter.vendorsIds)
+        : await vendorRepository.all();
+
+    // Common query.
+    const commonQuery = (query) => {
+      if (!isEmpty(filter.branchesIds)) {
+        query.modify('filterByBranches', filter.branchesIds);
+      }
+    };
+    // Retrieve all overdue vendors bills.
+    const overdueBills = await Bill.query()
+      .modify('overdueBillsFromDate', filter.asDate)
+      .onBuild(commonQuery);
+
+    // Retrieve all due vendors bills.
+    const dueBills = await Bill.query()
+      .modify('dueBillsFromDate', filter.asDate)
+      .onBuild(commonQuery);
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/APAgingSummary/APAgingSummaryService.ts

@@ -0,0 +1,60 @@
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { Injectable } from '@nestjs/common';
+import {
+  IAPAgingSummaryQuery,
+  IAPAgingSummarySheet,
+} from './APAgingSummary.types';
+import { APAgingSummarySheet } from './APAgingSummarySheet';
+import { APAgingSummaryMeta } from './APAgingSummaryMeta';
+import { getAPAgingSummaryDefaultQuery } from './utils';
+import { events } from '@/common/events/events';
+
+@Injectable()
+export class APAgingSummaryService {
+  constructor(
+    private readonly APAgingSummaryMeta: APAgingSummaryMeta,
+    private readonly eventPublisher: EventEmitter2,
+  ) {}
+
+  /**
+   * Retrieve A/P aging summary report.
+   * @param {number} tenantId -
+   * @param {IAPAgingSummaryQuery} query -
+   * @returns {Promise<IAPAgingSummarySheet>}
+   */
+  public async APAgingSummary(
+    query: IAPAgingSummaryQuery,
+  ): Promise<IAPAgingSummarySheet> {
+
+    const filter = {
+      ...getAPAgingSummaryDefaultQuery(),
+      ...query,
+    };
+    // A/P aging summary report instance.
+    const APAgingSummaryReport = new APAgingSummarySheet(
+      filter,
+      vendors,
+      overdueBills,
+      dueBills,
+      tenant.metadata.baseCurrency,
+    );
+    // A/P aging summary report data and columns.
+    const data = APAgingSummaryReport.reportData();
+    const columns = APAgingSummaryReport.reportColumns();
+
+    // Retrieve the aging summary report meta.
+    const meta = await this.APAgingSummaryMeta.meta(filter);
+
+    // Triggers `onPayableAgingViewed` event.
+    await this.eventPublisher.emitAsync(events.reports.onPayableAgingViewed, {
+      query,
+    });
+
+    return {
+      data,
+      columns,
+      query: filter,
+      meta,
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/APAgingSummary/APAgingSummarySheet.ts

@@ -0,0 +1,188 @@
+import { groupBy, sum, isEmpty } from 'lodash';
+import * as R from 'ramda';
+import {
+  IAPAgingSummaryQuery,
+  IAPAgingSummaryData,
+  IAPAgingSummaryVendor,
+  IAPAgingSummaryColumns,
+  IAPAgingSummaryTotal,
+} from './APAgingSummary.types';
+import { AgingSummaryReport } from '../AgingSummary/AgingSummary';
+import { IAgingPeriod } from '../AgingSummary/AgingSummary.types';
+import { ModelObject } from 'objection';
+import { Bill } from '@/modules/Bills/models/Bill';
+import { Vendor } from '@/modules/Vendors/models/Vendor';
+import { allPassedConditionsPass } from '@/utils/all-conditions-passed';
+
+export class APAgingSummarySheet extends AgingSummaryReport {
+  readonly tenantId: number;
+  readonly query: IAPAgingSummaryQuery;
+  readonly contacts: ModelObject<Vendor>[];
+  readonly unpaidBills: ModelObject<Bill>[];
+  readonly baseCurrency: string;
+
+  readonly overdueInvoicesByContactId: Record<number, Array<ModelObject<Bill>>>;
+  readonly currentInvoicesByContactId: Record<number, Array<ModelObject<Bill>>>;
+
+  readonly agingPeriods: IAgingPeriod[];
+
+  /**
+   * Constructor method.
+   * @param {number} tenantId - Tenant id.
+   * @param {IAPAgingSummaryQuery} query - Report query.
+   * @param {ModelObject<Vendor>[]} vendors - Unpaid bills.
+   * @param {string} baseCurrency - Base currency of the organization.
+   */
+  constructor(
+    tenantId: number,
+    query: IAPAgingSummaryQuery,
+    vendors: ModelObject<Vendor>[],
+    overdueBills: ModelObject<Bill>[],
+    unpaidBills: ModelObject<Bill>[],
+    baseCurrency: string,
+  ) {
+    super();
+
+    this.tenantId = tenantId;
+    this.query = query;
+    this.numberFormat = this.query.numberFormat;
+    this.contacts = vendors;
+    this.baseCurrency = baseCurrency;
+
+    this.overdueInvoicesByContactId = groupBy(overdueBills, 'vendorId');
+    this.currentInvoicesByContactId = groupBy(unpaidBills, 'vendorId');
+
+    // Initializes the aging periods.
+    this.agingPeriods = this.agingRangePeriods(
+      this.query.asDate,
+      this.query.agingDaysBefore,
+      this.query.agingPeriods,
+    );
+  }
+
+  /**
+   * Retrieve the vendors aging and current total.
+   * @param  {IAPAgingSummaryTotal} vendorsAgingPeriods
+   * @return {IAPAgingSummaryTotal}
+   */
+  private getVendorsTotal = (vendorsAgingPeriods): IAPAgingSummaryTotal => {
+    const totalAgingPeriods = this.getTotalAgingPeriods(vendorsAgingPeriods);
+    const totalCurrent = this.getTotalCurrent(vendorsAgingPeriods);
+    const totalVendorsTotal = this.getTotalContactsTotals(vendorsAgingPeriods);
+
+    return {
+      current: this.formatTotalAmount(totalCurrent),
+      aging: totalAgingPeriods,
+      total: this.formatTotalAmount(totalVendorsTotal),
+    };
+  };
+
+  /**
+   * Retrieve the vendor section data.
+   * @param  {ModelObject<Vendor>} vendor
+   * @return {IAPAgingSummaryVendor}
+   */
+  private vendorTransformer = (
+    vendor: ModelObject<Vendor>,
+  ): IAPAgingSummaryVendor => {
+    const agingPeriods = this.getContactAgingPeriods(vendor.id);
+    const currentTotal = this.getContactCurrentTotal(vendor.id);
+    const agingPeriodsTotal = this.getAgingPeriodsTotal(agingPeriods);
+
+    const amount = sum([agingPeriodsTotal, currentTotal]);
+
+    return {
+      vendorName: vendor.displayName,
+      current: this.formatAmount(currentTotal),
+      aging: agingPeriods,
+      total: this.formatTotalAmount(amount),
+    };
+  };
+
+  /**
+   * Mappes the given vendor objects to vendor report node.
+   * @param {ModelObject<Vendor>[]} vendors
+   * @returns {IAPAgingSummaryVendor[]}
+   */
+  private vendorsMapper = (
+    vendors: ModelObject<Vendor>[],
+  ): IAPAgingSummaryVendor[] => {
+    return vendors.map(this.vendorTransformer);
+  };
+
+  /**
+   * Detarmines whether the given vendor node is none zero.
+   * @param {IAPAgingSummaryVendor} vendorNode
+   * @returns {boolean}
+   */
+  private filterNoneZeroVendorNode = (
+    vendorNode: IAPAgingSummaryVendor,
+  ): boolean => {
+    return vendorNode.total.amount !== 0;
+  };
+
+  /**
+   * Filters vendors report nodes based on the given report query.
+   * @param {IAPAgingSummaryVendor} vendorNode
+   * @returns {boolean}
+   */
+  private vendorNodeFilter = (vendorNode: IAPAgingSummaryVendor): boolean => {
+    const { noneZero } = this.query;
+    const conditions = [[noneZero, this.filterNoneZeroVendorNode]];
+
+    return allPassedConditionsPass(conditions)(vendorNode);
+  };
+
+  /**
+   * Filtesr the given report vendors nodes.
+   * @param {IAPAgingSummaryVendor[]} vendorNodes
+   * @returns {IAPAgingSummaryVendor[]}
+   */
+  private vendorsFilter = (
+    vendorNodes: IAPAgingSummaryVendor[],
+  ): IAPAgingSummaryVendor[] => {
+    return vendorNodes.filter(this.vendorNodeFilter);
+  };
+
+  /**
+   * Detarmines whether vendors nodes filter enabled.
+   * @returns {boolean}
+   */
+  private isVendorNodesFilter = (): boolean => {
+    return isEmpty(this.query.vendorsIds);
+  };
+
+  /**
+   * Retrieve vendors aging periods.
+   * @return {IAPAgingSummaryVendor[]}
+   */
+  private vendorsSection = (
+    vendors: ModelObject<Vendor>[],
+  ): IAPAgingSummaryVendor[] => {
+    return R.compose(
+      R.when(this.isVendorNodesFilter, this.vendorsFilter),
+      this.vendorsMapper,
+    )(vendors);
+  };
+
+  /**
+   * Retrieve the A/P aging summary report data.
+   * @return {IAPAgingSummaryData}
+   */
+  public reportData = (): IAPAgingSummaryData => {
+    const vendorsAgingPeriods = this.vendorsSection(this.contacts);
+    const vendorsTotal = this.getVendorsTotal(vendorsAgingPeriods);
+
+    return {
+      vendors: vendorsAgingPeriods,
+      total: vendorsTotal,
+    };
+  };
+
+  /**
+   * Retrieve the A/P aging summary report columns.
+   */
+  public reportColumns = (): IAPAgingSummaryColumns => {
+    return this.agingPeriods;
+  };
+}

packages/server-nest/src/modules/FinancialStatements/modules/APAgingSummary/APAgingSummaryTable.ts

@@ -0,0 +1,49 @@
+import { I18nService } from 'nestjs-i18n';
+import { IAPAgingSummaryData } from './APAgingSummary.types';
+import { AgingSummaryTable } from '../AgingSummary/AgingSummaryTable';
+import { ITableColumnAccessor } from '../../types/Table.types';
+import { IAgingSummaryQuery } from '../AgingSummary/AgingSummary.types';
+import { ITableColumn } from '../../types/Table.types';
+import { ITableRow } from '../../types/Table.types';
+
+export class APAgingSummaryTable extends AgingSummaryTable {
+  readonly report: IAPAgingSummaryData;
+
+  /**
+   * Constructor method.
+   * @param {IARAgingSummaryData} data
+   * @param {IAgingSummaryQuery} query
+   * @param {any} i18n
+   */
+  constructor(
+    data: IAPAgingSummaryData,
+    query: IAgingSummaryQuery,
+    i18n: I18nService,
+  ) {
+    super(data, query, i18n);
+  }
+
+  /**
+   * Retrieves the contacts table rows.
+   * @returns {ITableRow[]}
+   */
+  get contactsRows(): ITableRow[] {
+    return this.contactsNodes(this.report.vendors);
+  }
+
+  /**
+   * Contact name node accessor.
+   * @returns {ITableColumnAccessor}
+   */
+  get contactNameNodeAccessor(): ITableColumnAccessor {
+    return { key: 'vendor_name', accessor: 'vendorName' };
+  }
+
+  /**
+   * Retrieves the contact name table column.
+   * @returns {ITableColumn}
+   */
+  contactNameTableColumn = (): ITableColumn => {
+    return { label: 'Vendor name', key: 'vendor_name' };
+  };
+}

packages/server-nest/src/modules/FinancialStatements/modules/APAgingSummary/APAgingSummaryTableInjectable.ts

@@ -0,0 +1,33 @@
+import {
+  IAPAgingSummaryQuery,
+  IAPAgingSummaryTable,
+} from './APAgingSummary.types';
+import { APAgingSummaryService } from './APAgingSummaryService';
+import { APAgingSummaryTable } from './APAgingSummaryTable';
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class APAgingSummaryTableInjectable {
+  constructor(private readonly APAgingSummarySheet: APAgingSummaryService) {}
+
+  /**
+   * Retrieves A/P aging summary in table format.
+   * @param {IAPAgingSummaryQuery} query - 
+   * @returns {Promise<IAPAgingSummaryTable>}
+   */
+  public async table(
+    query: IAPAgingSummaryQuery,
+  ): Promise<IAPAgingSummaryTable> {
+    const report = await this.APAgingSummarySheet.APAgingSummary(query);
+    const table = new APAgingSummaryTable(report.data, query, {});
+
+    return {
+      table: {
+        columns: table.tableColumns(),
+        rows: table.tableRows(),
+      },
+      meta: report.meta,
+      query: report.query,
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/APAgingSummary/utils.ts

@@ -0,0 +1,17 @@
+export const getAPAgingSummaryDefaultQuery = () => {
+  return {
+    asDate: moment().format('YYYY-MM-DD'),
+    agingDaysBefore: 30,
+    agingPeriods: 3,
+    numberFormat: {
+      precision: 2,
+      divideOn1000: false,
+      showZero: false,
+      formatMoney: 'total',
+      negativeFormat: 'mines',
+    },
+    vendorsIds: [],
+    branchesIds: [],
+    noneZero: false,
+  };
+};

packages/server-nest/src/modules/FinancialStatements/modules/ARAgingSummary/ARAgingSummary.controller.ts

@@ -0,0 +1,56 @@
+import { IARAgingSummaryQuery } from './ARAgingSummary.types';
+import { Get, Headers } from '@nestjs/common';
+import { Query, Res } from '@nestjs/common';
+import { ARAgingSummaryApplication } from './ARAgingSummaryApplication';
+import { AcceptType } from '@/constants/accept-type';
+import { Response } from 'express';
+
+export class ARAgingSummaryController {
+  constructor(private readonly ARAgingSummaryApp: ARAgingSummaryApplication) {}
+
+  @Get()
+  public async get(
+    @Query() filter: IARAgingSummaryQuery,
+    @Res() res: Response,
+    @Headers('accept') acceptHeader: string,
+  ) {
+    // Retrieves the xlsx format.
+    if (acceptHeader.includes(AcceptType.ApplicationXlsx)) {
+      const buffer = await this.ARAgingSummaryApp.xlsx(filter);
+
+      res.setHeader('Content-Disposition', 'attachment; filename=output.xlsx');
+      res.setHeader(
+        'Content-Type',
+        'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+      );
+      return res.send(buffer);
+      // Retrieves the table format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationJsonTable)) {
+      const table = await this.ARAgingSummaryApp.table(filter);
+
+      return res.status(200).send(table);
+      // Retrieves the csv format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationCsv)) {
+      const buffer = await this.ARAgingSummaryApp.csv(filter);
+
+      res.setHeader('Content-Disposition', 'attachment; filename=output.csv');
+      res.setHeader('Content-Type', 'text/csv');
+
+      return res.send(buffer);
+      // Retrieves the pdf format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationPdf)) {
+      const pdfContent = await this.ARAgingSummaryApp.pdf(filter);
+
+      res.set({
+        'Content-Type': 'application/pdf',
+        'Content-Length': pdfContent.length,
+      });
+      return res.send(pdfContent);
+      // Retrieves the json format.
+    } else {
+      const sheet = await this.ARAgingSummaryApp.sheet(filter);
+
+      return res.status(200).send(sheet);
+    }
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/ARAgingSummary/ARAgingSummary.module.ts

@@ -0,0 +1,23 @@
+import { Module } from '@nestjs/common';
+import { ARAgingSummaryTableInjectable } from './ARAgingSummaryTableInjectable';
+import { ARAgingSummaryExportInjectable } from './ARAgingSummaryExportInjectable';
+import { ARAgingSummaryService } from './ARAgingSummaryService';
+import { ARAgingSummaryPdfInjectable } from './ARAgingSummaryPdfInjectable';
+import { AgingSummaryModule } from '../AgingSummary/AgingSummary.module';
+import { ARAgingSummaryRepository } from './ARAgingSummaryRepository';
+import { ARAgingSummaryApplication } from './ARAgingSummaryApplication';
+import { ARAgingSummaryController } from './ARAgingSummary.controller';
+
+@Module({
+  imports: [AgingSummaryModule],
+  controllers: [ARAgingSummaryController],
+  providers: [
+    ARAgingSummaryTableInjectable,
+    ARAgingSummaryExportInjectable,
+    ARAgingSummaryService,
+    ARAgingSummaryPdfInjectable,
+    ARAgingSummaryRepository,
+    ARAgingSummaryApplication,
+  ],
+})
+export class ARAgingSummaryModule {}

packages/server-nest/src/modules/FinancialStatements/modules/ARAgingSummary/ARAgingSummary.types.ts

@@ -0,0 +1,43 @@
+import {
+  IAgingPeriod,
+  IAgingSummaryQuery,
+  IAgingSummaryTotal,
+  IAgingSummaryContact,
+  IAgingSummaryData,
+  IAgingSummaryMeta,
+} from '../AgingSummary/AgingSummary.types';
+import { IFinancialTable } from '../../types/Table.types';
+
+export interface IARAgingSummaryQuery extends IAgingSummaryQuery {
+  customersIds: number[];
+}
+
+export interface IARAgingSummaryCustomer extends IAgingSummaryContact {
+  customerName: string;
+}
+
+export interface IARAgingSummaryTotal extends IAgingSummaryTotal {}
+
+export interface IARAgingSummaryData extends IAgingSummaryData {
+  customers: IARAgingSummaryCustomer[];
+}
+
+export type IARAgingSummaryColumns = IAgingPeriod[];
+
+export interface IARAgingSummaryMeta extends IAgingSummaryMeta {
+  organizationName: string;
+  baseCurrency: string;
+}
+
+export interface IARAgingSummaryTable extends IFinancialTable {
+  meta: IARAgingSummaryMeta;
+  query: IARAgingSummaryQuery;
+}
+
+export interface IARAgingSummarySheet {
+  data: IARAgingSummaryData;
+  meta: IARAgingSummaryMeta;
+  query: IARAgingSummaryQuery;
+  columns: IARAgingSummaryColumns;
+}
+

packages/server-nest/src/modules/FinancialStatements/modules/ARAgingSummary/ARAgingSummaryApplication.ts

@@ -0,0 +1,60 @@
+import { ARAgingSummaryTableInjectable } from './ARAgingSummaryTableInjectable';
+import { ARAgingSummaryExportInjectable } from './ARAgingSummaryExportInjectable';
+import { ARAgingSummaryService } from './ARAgingSummaryService';
+import { ARAgingSummaryPdfInjectable } from './ARAgingSummaryPdfInjectable';
+import { IARAgingSummaryQuery } from './ARAgingSummary.types';
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class ARAgingSummaryApplication {
+  constructor(
+    private readonly ARAgingSummaryTable: ARAgingSummaryTableInjectable,
+    private readonly ARAgingSummaryExport: ARAgingSummaryExportInjectable,
+    private readonly ARAgingSummarySheet: ARAgingSummaryService,
+    private readonly ARAgingSummaryPdf: ARAgingSummaryPdfInjectable,
+  ) {}
+
+  /**
+   * Retrieve the A/R aging summary sheet.
+   * @param {IAPAgingSummaryQuery} query
+   */
+  public sheet(query: IARAgingSummaryQuery) {
+    return this.ARAgingSummarySheet.ARAgingSummary(query);
+  }
+
+  /**
+   * Retrieve the A/R aging summary in table format.
+   * @param {number} tenantId
+   * @param {IAPAgingSummaryQuery} query
+   */
+  public table(query: IARAgingSummaryQuery) {
+    return this.ARAgingSummaryTable.table(query);
+  }
+
+  /**
+   * Retrieve the A/R aging summary in XLSX format.
+   * @param {number} tenantId
+   * @param {IAPAgingSummaryQuery} query
+   */
+  public xlsx(query: IARAgingSummaryQuery) {
+    return this.ARAgingSummaryExport.xlsx(query);
+  }
+
+  /**
+   * Retrieve the A/R aging summary in CSV format.
+   * @param {number} tenantId
+   * @param {IAPAgingSummaryQuery} query
+   */
+  public csv(query: IARAgingSummaryQuery) {
+    return this.ARAgingSummaryExport.csv(query);
+  }
+
+  /**
+   * Retrieves the A/R aging summary in pdf format.
+   * @param {IARAgingSummaryQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public pdf(query: IARAgingSummaryQuery) {
+    return this.ARAgingSummaryPdf.pdf(query);
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/ARAgingSummary/ARAgingSummaryExportInjectable.ts

@@ -0,0 +1,43 @@
+import { ARAgingSummaryTableInjectable } from './ARAgingSummaryTableInjectable';
+import { IARAgingSummaryQuery } from './ARAgingSummary.types';
+import { TableSheet } from '../../common/TableSheet';
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class ARAgingSummaryExportInjectable {
+  constructor(
+    private readonly ARAgingSummaryTable: ARAgingSummaryTableInjectable,
+  ) {}
+
+  /**
+   * Retrieves the A/R aging summary sheet in XLSX format.
+   * @param {IARAgingSummaryQuery} query - A/R aging summary query.
+   * @returns {Promise<Buffer>}
+   */
+  public async xlsx(
+    query: IARAgingSummaryQuery
+  ): Promise<Buffer> {
+    const table = await this.ARAgingSummaryTable.table(query);
+
+    const tableSheet = new TableSheet(table.table);
+    const tableCsv = tableSheet.convertToXLSX();
+
+    return tableSheet.convertToBuffer(tableCsv, 'xlsx');
+  }
+
+  /**
+   * Retrieves the A/R aging summary sheet in CSV format.
+   * @param {IARAgingSummaryQuery} query - A/R aging summary query.
+   * @returns {Promise<string>}
+   */
+  public async csv(
+    query: IARAgingSummaryQuery
+  ): Promise<string> {
+    const table = await this.ARAgingSummaryTable.table(query);
+
+    const tableSheet = new TableSheet(table.table);
+    const tableCsv = tableSheet.convertToCSV();
+
+    return tableCsv;
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/ARAgingSummary/ARAgingSummaryMeta.ts

@@ -0,0 +1,27 @@
+
+import { Injectable } from '@nestjs/common';
+import { AgingSummaryMeta } from '../AgingSummary/AgingSummaryMeta';
+import { IAgingSummaryMeta, IAgingSummaryQuery } from '../AgingSummary/AgingSummary.types';
+
+@Injectable()
+export class ARAgingSummaryMeta {
+  constructor(
+    private readonly agingSummaryMeta: AgingSummaryMeta,
+  ) {}
+
+  /**
+   * Retrieve the aging summary meta.
+   * @param {IAgingSummaryQuery} query - Aging summary query.
+   * @returns {IAgingSummaryMeta}
+   */
+  public async meta(
+    query: IAgingSummaryQuery
+  ): Promise<IAgingSummaryMeta> {
+    const commonMeta = await this.agingSummaryMeta.meta(query);
+
+    return {
+      ...commonMeta,
+      sheetName: 'A/R Aging Summary',
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/ARAgingSummary/ARAgingSummaryPdfInjectable.ts

@@ -0,0 +1,29 @@
+import { Injectable } from '@nestjs/common';
+import { ARAgingSummaryTableInjectable } from './ARAgingSummaryTableInjectable';
+import { IARAgingSummaryQuery } from './ARAgingSummary.types';
+import { TableSheetPdf } from '../../common/TableSheetPdf';
+import { HtmlTableCss } from '../AgingSummary/_constants';
+
+@Injectable()
+export class ARAgingSummaryPdfInjectable {
+  constructor(
+    private readonly ARAgingSummaryTable: ARAgingSummaryTableInjectable,
+    private readonly tableSheetPdf: TableSheetPdf,
+  ) {}
+
+  /**
+   * Converts the given balance sheet table to pdf.
+   * @param {IBalanceSheetQuery} query - Balance sheet query.
+   * @returns {Promise<Buffer>}
+   */
+  public async pdf(query: IARAgingSummaryQuery): Promise<Buffer> {
+    const table = await this.ARAgingSummaryTable.table(query);
+
+    return this.tableSheetPdf.convertToPdf(
+      table.table,
+      table.meta.sheetName,
+      table.meta.formattedDateRange,
+      HtmlTableCss,
+    );
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/ARAgingSummary/ARAgingSummaryRepository.ts

@@ -0,0 +1,38 @@
+
+
+
+
+
+
+export class ARAgingSummaryRepository {
+
+
+  init(){
+    const tenant = await Tenant.query()
+    .findById(tenantId)
+    .withGraphFetched('metadata');
+
+  // Retrieve all customers from the storage.
+  const customers =
+    filter.customersIds.length > 0
+      ? await customerRepository.findWhereIn('id', filter.customersIds)
+      : await customerRepository.all();
+
+  // Common query.
+  const commonQuery = (query) => {
+    if (!isEmpty(filter.branchesIds)) {
+      query.modify('filterByBranches', filter.branchesIds);
+    }
+  };
+  // Retrieve all overdue sale invoices.
+  const overdueSaleInvoices = await SaleInvoice.query()
+    .modify('overdueInvoicesFromDate', filter.asDate)
+    .onBuild(commonQuery);
+
+  // Retrieve all due sale invoices.
+  const currentInvoices = await SaleInvoice.query()
+    .modify('dueInvoicesFromDate', filter.asDate)
+    .onBuild(commonQuery);
+
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/ARAgingSummary/ARAgingSummaryService.ts

@@ -0,0 +1,55 @@
+import { ARAgingSummarySheet } from './ARAgingSummarySheet';
+import { ARAgingSummaryMeta } from './ARAgingSummaryMeta';
+import { getARAgingSummaryDefaultQuery } from './utils';
+import { Injectable } from '@nestjs/common';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { IARAgingSummaryQuery } from './ARAgingSummary.types';
+import { events } from '@/common/events/events';
+
+@Injectable()
+export class ARAgingSummaryService {
+  constructor(
+    private readonly ARAgingSummaryMeta: ARAgingSummaryMeta,
+    private readonly eventPublisher: EventEmitter2,
+  ) {}
+
+  /**
+   * Retrieve A/R aging summary report.
+   * @param {IARAgingSummaryQuery} query -
+   */
+  async ARAgingSummary(query: IARAgingSummaryQuery) {
+    const filter = {
+      ...getARAgingSummaryDefaultQuery(),
+      ...query,
+    };
+    // AR aging summary report instance.
+    const ARAgingSummaryReport = new ARAgingSummarySheet(
+      filter,
+      customers,
+      overdueSaleInvoices,
+      currentInvoices,
+      tenant.metadata.baseCurrency,
+    );
+    // AR aging summary report data and columns.
+    const data = ARAgingSummaryReport.reportData();
+    const columns = ARAgingSummaryReport.reportColumns();
+
+    // Retrieve the aging summary report meta.
+    const meta = await this.ARAgingSummaryMeta.meta(filter);
+
+    // Triggers `onReceivableAgingViewed` event.
+    await this.eventPublisher.emitAsync(
+      events.reports.onReceivableAgingViewed,
+      {
+        query,
+      },
+    );
+
+    return {
+      data,
+      columns,
+      query: filter,
+      meta,
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/ARAgingSummary/ARAgingSummarySheet.ts

@@ -0,0 +1,198 @@
+import * as R from 'ramda';
+import { Dictionary, groupBy, isEmpty, sum } from 'lodash';
+import { IAgingPeriod } from '../AgingSummary/AgingSummary.types';
+import {
+  IARAgingSummaryQuery,
+  IARAgingSummaryCustomer,
+  IARAgingSummaryData,
+  IARAgingSummaryColumns,
+  IARAgingSummaryTotal,
+} from './ARAgingSummary.types';
+import { AgingSummaryReport } from '../AgingSummary/AgingSummary';
+import { allPassedConditionsPass } from '@/utils/all-conditions-passed';
+import { ModelObject } from 'objection';
+import { Customer } from '@/modules/Customers/models/Customer';
+import { SaleInvoice } from '@/modules/SaleInvoices/models/SaleInvoice';
+
+export class ARAgingSummarySheet extends AgingSummaryReport {
+  readonly tenantId: number;
+  readonly query: IARAgingSummaryQuery;
+  readonly contacts: ModelObject<Customer>[];
+  readonly agingPeriods: IAgingPeriod[];
+  readonly baseCurrency: string;
+
+  readonly overdueInvoicesByContactId: Dictionary<ModelObject<SaleInvoice>[]>;
+  readonly currentInvoicesByContactId: Dictionary<ModelObject<SaleInvoice>[]>;
+
+  /**
+   * Constructor method.
+   * @param {number} tenantId
+   * @param {IARAgingSummaryQuery} query
+   * @param {ICustomer[]} customers
+   * @param {IJournalPoster} journal
+   */
+  constructor(
+    tenantId: number,
+    query: IARAgingSummaryQuery,
+    customers: ModelObject<Customer>[],
+    overdueSaleInvoices: ModelObject<SaleInvoice>[],
+    currentSaleInvoices: ModelObject<SaleInvoice>[],
+    baseCurrency: string,
+  ) {
+    super();
+
+    this.tenantId = tenantId;
+    this.contacts = customers;
+    this.query = query;
+    this.baseCurrency = baseCurrency;
+    this.numberFormat = this.query.numberFormat;
+
+    this.overdueInvoicesByContactId = groupBy(
+      overdueSaleInvoices,
+      'customerId',
+    );
+    this.currentInvoicesByContactId = groupBy(
+      currentSaleInvoices,
+      'customerId',
+    );
+    // Initializes the aging periods.
+    this.agingPeriods = this.agingRangePeriods(
+      this.query.asDate,
+      this.query.agingDaysBefore,
+      this.query.agingPeriods,
+    );
+  }
+
+  /**
+   * Mapping aging customer.
+   * @param {ICustomer} customer -
+   * @return {IARAgingSummaryCustomer[]}
+   */
+  private customerTransformer = (
+    customer: ModelObject<Customer>,
+  ): IARAgingSummaryCustomer => {
+    const agingPeriods = this.getContactAgingPeriods(customer.id);
+    const currentTotal = this.getContactCurrentTotal(customer.id);
+    const agingPeriodsTotal = this.getAgingPeriodsTotal(agingPeriods);
+    const amount = sum([agingPeriodsTotal, currentTotal]);
+
+    return {
+      customerName: customer.displayName,
+      current: this.formatAmount(currentTotal),
+      aging: agingPeriods,
+      total: this.formatTotalAmount(amount),
+    };
+  };
+
+  /**
+   * Mappes the customers objects to report accounts nodes.
+   * @param {ICustomer[]} customers
+   * @returns {IARAgingSummaryCustomer[]}
+   */
+  private customersMapper = (
+    customers: ModelObject<Customer>[],
+  ): IARAgingSummaryCustomer[] => {
+    return customers.map(this.customerTransformer);
+  };
+
+  /**
+   * Filters the none-zero account report node.
+   * @param {IARAgingSummaryCustomer} node
+   * @returns {boolean}
+   */
+  private filterNoneZeroAccountNode = (
+    node: IARAgingSummaryCustomer,
+  ): boolean => {
+    return node.total.amount !== 0;
+  };
+
+  /**
+   * Filters customer report node based on the given report query.
+   * @param {IARAgingSummaryCustomer} customerNode
+   * @returns {boolean}
+   */
+  private customerNodeFilter = (
+    customerNode: IARAgingSummaryCustomer,
+  ): boolean => {
+    const { noneZero } = this.query;
+
+    const conditions = [[noneZero, this.filterNoneZeroAccountNode]];
+
+    return allPassedConditionsPass(conditions)(customerNode);
+  };
+
+  /**
+   * Filters customers report nodes.
+   * @param {IARAgingSummaryCustomer[]} customers
+   * @returns {IARAgingSummaryCustomer[]}
+   */
+  private customersFilter = (
+    customers: IARAgingSummaryCustomer[],
+  ): IARAgingSummaryCustomer[] => {
+    return customers.filter(this.customerNodeFilter);
+  };
+
+  /**
+   * Detarmines the customers nodes filter is enabled.
+   * @returns {boolean}
+   */
+  private isCustomersFilterEnabled = (): boolean => {
+    return isEmpty(this.query.customersIds);
+  };
+
+  /**
+   * Retrieve customers report.
+   * @param {ICustomer[]} customers
+   * @return {IARAgingSummaryCustomer[]}
+   */
+  private customersWalker = (
+    customers: ModelObject<Customer>[],
+  ): IARAgingSummaryCustomer[] => {
+    return R.compose(
+      R.when(this.isCustomersFilterEnabled, this.customersFilter),
+      this.customersMapper,
+    )(customers);
+  };
+
+  /**
+   * Retrieve the customers aging and current total.
+   * @param {IARAgingSummaryCustomer} customersAgingPeriods
+   */
+  private getCustomersTotal = (
+    customersAgingPeriods: IARAgingSummaryCustomer[],
+  ): IARAgingSummaryTotal => {
+    const totalAgingPeriods = this.getTotalAgingPeriods(customersAgingPeriods);
+    const totalCurrent = this.getTotalCurrent(customersAgingPeriods);
+    const totalCustomersTotal = this.getTotalContactsTotals(
+      customersAgingPeriods,
+    );
+
+    return {
+      current: this.formatTotalAmount(totalCurrent),
+      aging: totalAgingPeriods,
+      total: this.formatTotalAmount(totalCustomersTotal),
+    };
+  };
+
+  /**
+   * Retrieve A/R aging summary report data.
+   * @return {IARAgingSummaryData}
+   */
+  public reportData = (): IARAgingSummaryData => {
+    const customersAgingPeriods = this.customersWalker(this.contacts);
+    const customersTotal = this.getCustomersTotal(customersAgingPeriods);
+
+    return {
+      customers: customersAgingPeriods,
+      total: customersTotal,
+    };
+  };
+
+  /**
+   * Retrieve A/R aging summary report columns.
+   * @return {IARAgingSummaryColumns}
+   */
+  public reportColumns(): IARAgingSummaryColumns {
+    return this.agingPeriods;
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/ARAgingSummary/ARAgingSummaryTable.ts

@@ -0,0 +1,34 @@
+import { IARAgingSummaryData } from './ARAgingSummary.types';
+import { AgingSummaryTable } from '../AgingSummary/AgingSummaryTable';
+import { IAgingSummaryQuery } from '../AgingSummary/AgingSummary.types';
+import { ITableColumnAccessor, ITableRow } from '../../types/Table.types';
+
+export class ARAgingSummaryTable extends AgingSummaryTable {
+  readonly report: IARAgingSummaryData;
+
+  /**
+   * Constructor method.
+   * @param {IARAgingSummaryData} data
+   * @param {IAgingSummaryQuery} query
+   * @param {any} i18n
+   */
+  constructor(data: IARAgingSummaryData, query: IAgingSummaryQuery, i18n: any) {
+    super(data, query, i18n);
+  }
+
+  /**
+   * Retrieves the contacts table rows.
+   * @returns {ITableRow[]}
+   */
+  get contactsRows(): ITableRow[] {
+    return this.contactsNodes(this.report.customers);
+  }
+
+  /**
+   * Contact name node accessor.
+   * @returns {ITableColumnAccessor}
+   */
+  get contactNameNodeAccessor(): ITableColumnAccessor {
+    return { key: 'customer_name', accessor: 'customerName' };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/ARAgingSummary/ARAgingSummaryTableInjectable.ts

@@ -0,0 +1,33 @@
+import { ARAgingSummaryTable } from './ARAgingSummaryTable';
+import { ARAgingSummaryService } from './ARAgingSummaryService';
+import { Injectable } from '@nestjs/common';
+import {
+  IARAgingSummaryQuery,
+  IARAgingSummaryTable,
+} from './ARAgingSummary.types';
+
+@Injectable()
+export class ARAgingSummaryTableInjectable {
+  constructor(private readonly ARAgingSummarySheet: ARAgingSummaryService) {}
+
+  /**
+   * Retrieves A/R aging summary in table format.
+   * @param {IARAgingSummaryQuery} query - Aging summary query.
+   * @returns {Promise<IARAgingSummaryTable>}
+   */
+  public async table(
+    query: IARAgingSummaryQuery,
+  ): Promise<IARAgingSummaryTable> {
+    const report = await this.ARAgingSummarySheet.ARAgingSummary(query);
+    const table = new ARAgingSummaryTable(report.data, query, {});
+
+    return {
+      table: {
+        columns: table.tableColumns(),
+        rows: table.tableRows(),
+      },
+      meta: report.meta,
+      query,
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/ARAgingSummary/utils.ts

@@ -0,0 +1,20 @@
+
+
+
+export const getARAgingSummaryDefaultQuery = () => { 
+  return {
+    asDate: moment().format('YYYY-MM-DD'),
+      agingDaysBefore: 30,
+      agingPeriods: 3,
+      numberFormat: {
+        divideOn1000: false,
+        negativeFormat: 'mines',
+        showZero: false,
+        formatMoney: 'total',
+        precision: 2,
+      },
+      customersIds: [],
+      branchesIds: [],
+      noneZero: false,
+  };
+};

packages/server-nest/src/modules/FinancialStatements/modules/AgingSummary/AgingReport.ts

@@ -0,0 +1,51 @@
+import * as moment from 'moment';
+import { IAgingPeriod } from './AgingSummary.types';
+import { FinancialSheet } from '../../common/FinancialSheet';
+
+export abstract class AgingReport extends FinancialSheet {
+  /**
+   * Retrieve the aging periods range.
+   * @param {string} asDay
+   * @param {number} agingDaysBefore
+   * @param {number} agingPeriodsFreq
+   */
+  public agingRangePeriods(
+    asDay: Date | string,
+    agingDaysBefore: number,
+    agingPeriodsFreq: number,
+  ): IAgingPeriod[] {
+    const totalAgingDays = agingDaysBefore * agingPeriodsFreq;
+    const startAging = moment(asDay).startOf('day');
+    const endAging = startAging
+      .clone()
+      .subtract(totalAgingDays, 'days')
+      .endOf('day');
+
+    const agingPeriods: IAgingPeriod[] = [];
+    const startingAging = startAging.clone();
+
+    let beforeDays = 1;
+    let toDays = 0;
+
+    while (startingAging > endAging) {
+      const currentAging = startingAging.clone();
+      startingAging.subtract(agingDaysBefore, 'days').endOf('day');
+      toDays += agingDaysBefore;
+
+      agingPeriods.push({
+        fromPeriod: moment(currentAging).format('YYYY-MM-DD'),
+        toPeriod: moment(startingAging).format('YYYY-MM-DD'),
+        beforeDays: beforeDays === 1 ? 0 : beforeDays,
+        toDays: toDays,
+        ...(startingAging.valueOf() === endAging.valueOf()
+          ? {
+              toPeriod: null,
+              toDays: null,
+            }
+          : {}),
+      });
+      beforeDays += agingDaysBefore;
+    }
+    return agingPeriods;
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/AgingSummary/AgingSummary.module.ts

@@ -0,0 +1,8 @@
+import { Module } from '@nestjs/common';
+import { AgingSummaryMeta } from './AgingSummaryMeta';
+
+@Module({
+  exports: [AgingSummaryMeta],
+  providers: [AgingSummaryMeta],
+})
+export class AgingSummaryModule {}

packages/server-nest/src/modules/FinancialStatements/modules/AgingSummary/AgingSummary.ts

@@ -0,0 +1,233 @@
+import { ModelObject } from 'objection';
+import { defaultTo, sumBy, get } from 'lodash';
+import {
+  IAgingPeriod,
+  IAgingPeriodTotal,
+  IAgingAmount,
+  IAgingSummaryContact,
+  IAgingSummaryQuery,
+} from './AgingSummary.types';
+import { AgingReport } from './AgingReport';
+import { Customer } from '@/modules/Customers/models/Customer';
+import { Vendor } from '@/modules/Vendors/models/Vendor';
+import { Bill } from '@/modules/Bills/models/Bill';
+import { SaleInvoice } from '@/modules/SaleInvoices/models/SaleInvoice';
+import { IFormatNumberSettings } from '@/utils/format-number';
+import { IARAgingSummaryCustomer } from '../ARAgingSummary/ARAgingSummary.types';
+
+export abstract class AgingSummaryReport extends AgingReport {
+  readonly contacts: ModelObject<Customer | Vendor>[];
+  readonly agingPeriods: IAgingPeriod[] = [];
+  readonly baseCurrency: string;
+  readonly query: IAgingSummaryQuery;
+  readonly overdueInvoicesByContactId: Record<
+    number,
+    Array<ModelObject<Bill | SaleInvoice>>
+  >;
+  readonly currentInvoicesByContactId: Record<
+    number,
+    Array<ModelObject<Bill | SaleInvoice>>
+  >;
+
+  /**
+   * Setes initial aging periods to the contact.
+   * @return {IAgingPeriodTotal[]}
+   */
+  protected getInitialAgingPeriodsTotal(): IAgingPeriodTotal[] {
+    return this.agingPeriods.map((agingPeriod) => ({
+      ...agingPeriod,
+      total: this.formatAmount(0),
+    }));
+  }
+
+  /**
+   * Calculates the given contact aging periods.
+   * @param {number} contactId - Contact id.
+   * @return {IAgingPeriodTotal[]}
+   */
+  protected getContactAgingPeriods(contactId: number): IAgingPeriodTotal[] {
+    const unpaidInvoices = this.getUnpaidInvoicesByContactId(contactId);
+    const initialAgingPeriods = this.getInitialAgingPeriodsTotal();
+
+    return unpaidInvoices.reduce(
+      (agingPeriods: IAgingPeriodTotal[], unpaidInvoice) => {
+        const newAgingPeriods = this.getContactAgingDueAmount(
+          agingPeriods,
+          unpaidInvoice.dueAmount,
+          unpaidInvoice.overdueDays,
+        );
+        return newAgingPeriods;
+      },
+      initialAgingPeriods,
+    );
+  }
+
+  /**
+   * Sets the contact aging due amount to the table.
+   * @param {IAgingPeriodTotal} agingPeriods - Aging periods.
+   * @param {number} dueAmount - Due amount.
+   * @param {number} overdueDays - Overdue days.
+   * @return {IAgingPeriodTotal[]}
+   */
+  protected getContactAgingDueAmount(
+    agingPeriods: IAgingPeriodTotal[],
+    dueAmount: number,
+    overdueDays: number,
+  ): IAgingPeriodTotal[] {
+    const newAgingPeriods = agingPeriods.map((agingPeriod) => {
+      const isInAgingPeriod =
+        agingPeriod.beforeDays <= overdueDays &&
+        (agingPeriod.toDays > overdueDays || !agingPeriod.toDays);
+
+      const total: number = isInAgingPeriod
+        ? agingPeriod.total.amount + dueAmount
+        : agingPeriod.total.amount;
+
+      return {
+        ...agingPeriod,
+        total: this.formatAmount(total),
+      };
+    });
+    return newAgingPeriods;
+  }
+
+  /**
+   * Retrieve the aging period total object.
+   * @param {number} amount
+   * @param {IFormatNumberSettings} settings - Override the format number settings.
+   * @return {IAgingAmount}
+   */
+  protected formatAmount(
+    amount: number,
+    settings: IFormatNumberSettings = {},
+  ): IAgingAmount {
+    return {
+      amount,
+      // @ts-ignore
+      formattedAmount: this.formatNumber(amount, settings),
+      currencyCode: this.baseCurrency,
+    };
+  }
+
+  /**
+   * Retrieve the aging period total object.
+   * @param {number} amount
+   * @param {IFormatNumberSettings} settings - Override the format number settings.
+   * @return {IAgingPeriodTotal}
+   */
+  protected formatTotalAmount(
+    amount: number,
+    settings: IFormatNumberSettings = {},
+  ): IAgingAmount {
+    return this.formatAmount(amount, {
+      money: true,
+      excerptZero: false,
+      ...settings,
+    });
+  }
+
+  /**
+   * Calculates the total of the aging period by the given index.
+   * @param {number} index
+   * @return {number}
+   */
+  protected getTotalAgingPeriodByIndex(
+    contactsAgingPeriods: any,
+    index: number,
+  ): number {
+    return this.contacts.reduce((acc, contact) => {
+      const totalPeriod = contactsAgingPeriods[index]
+        ? contactsAgingPeriods[index].total
+        : 0;
+
+      return acc + totalPeriod;
+    }, 0);
+  }
+
+  /**
+   * Retrieve the due invoices by the given contact id.
+   * @param  {number} contactId -
+   * @return {(ISaleInvoice | IBill)[]}
+   */
+  protected getUnpaidInvoicesByContactId(
+    contactId: number,
+  ): (ModelObject<SaleInvoice> | ModelObject<Bill>)[] {
+    return defaultTo(this.overdueInvoicesByContactId[contactId], []);
+  }
+
+  /**
+   * Retrieve total aging periods of the report.
+   * @return {(IAgingPeriodTotal & IAgingPeriod)[]}
+   */
+  protected getTotalAgingPeriods(
+    contactsAgingPeriods: IARAgingSummaryCustomer[],
+  ): IAgingPeriodTotal[] {
+    return this.agingPeriods.map((agingPeriod, index) => {
+      const total = sumBy(
+        contactsAgingPeriods,
+        (summary: IARAgingSummaryCustomer) => {
+          const aging = summary.aging[index];
+
+          if (!aging) {
+            return 0;
+          }
+          return aging.total.amount;
+        },
+      );
+
+      return {
+        ...agingPeriod,
+        total: this.formatTotalAmount(total),
+      };
+    });
+  }
+
+  /**
+   * Retrieve the current invoices by the given contact id.
+   * @param {number} contactId - Specific contact id.
+   * @return {(ISaleInvoice | IBill)[]}
+   */
+  protected getCurrentInvoicesByContactId(
+    contactId: number,
+  ): (ModelObject<SaleInvoice> | ModelObject<Bill>)[] {
+    return get(this.currentInvoicesByContactId, contactId, []);
+  }
+
+  /**
+   * Retrieve the contact total due amount.
+   * @param {number} contactId - Specific contact id.
+   * @return {number}
+   */
+  protected getContactCurrentTotal(contactId: number): number {
+    const currentInvoices = this.getCurrentInvoicesByContactId(contactId);
+    return sumBy(currentInvoices, (invoice) => invoice.dueAmount);
+  }
+
+  /**
+   * Retrieve to total sumation of the given contacts summeries sections.
+   * @param {IARAgingSummaryCustomer[]} contactsSections -
+   * @return {number}
+   */
+  protected getTotalCurrent(contactsSummaries: IAgingSummaryContact[]): number {
+    return sumBy(contactsSummaries, (summary) => summary.current.amount);
+  }
+
+  /**
+   * Retrieve the total of the given aging periods.
+   * @param {IAgingPeriodTotal[]} agingPeriods
+   * @return {number}
+   */
+  protected getAgingPeriodsTotal(agingPeriods: IAgingPeriodTotal[]): number {
+    return sumBy(agingPeriods, (period) => period.total.amount);
+  }
+
+  /**
+   * Retrieve total of contacts totals.
+   * @param {IAgingSummaryContact[]} contactsSummaries
+   */
+  protected getTotalContactsTotals(
+    contactsSummaries: IAgingSummaryContact[],
+  ): number {
+    return sumBy(contactsSummaries, (summary) => summary.total.amount);
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/AgingSummary/AgingSummary.types.ts

@@ -0,0 +1,49 @@
+import { IFinancialSheetCommonMeta } from '../../types/Report.types';
+import { INumberFormatQuery } from '../../types/Report.types';
+
+export interface IAgingPeriodTotal extends IAgingPeriod {
+  total: IAgingAmount;
+}
+
+export interface IAgingAmount {
+  amount: number;
+  formattedAmount: string;
+  currencyCode: string;
+}
+
+export interface IAgingPeriod {
+  fromPeriod: Date | string;
+  toPeriod: Date | string;
+  beforeDays: number;
+  toDays: number;
+}
+
+export interface IAgingSummaryContact {
+  current: IAgingAmount;
+  aging: IAgingPeriodTotal[];
+  total: IAgingAmount;
+}
+
+export interface IAgingSummaryQuery {
+  asDate: Date | string;
+  agingDaysBefore: number;
+  agingPeriods: number;
+  numberFormat: INumberFormatQuery;
+  branchesIds: number[];
+  noneZero: boolean;
+}
+
+export interface IAgingSummaryTotal {
+  current: IAgingAmount;
+  aging: IAgingPeriodTotal[];
+  total: IAgingAmount;
+}
+
+export interface IAgingSummaryData {
+  total: IAgingSummaryTotal;
+}
+
+export interface IAgingSummaryMeta extends IFinancialSheetCommonMeta {
+  formattedAsDate: string;
+  formattedDateRange: string;
+}

packages/server-nest/src/modules/FinancialStatements/modules/AgingSummary/AgingSummaryMeta.ts

@@ -0,0 +1,26 @@
+import moment from 'moment';
+import { Injectable } from '@nestjs/common';
+import { FinancialSheetMeta } from '../../common/FinancialSheetMeta';
+import { IAgingSummaryMeta, IAgingSummaryQuery } from './AgingSummary.types';
+
+@Injectable()
+export class AgingSummaryMeta {
+  constructor(private readonly financialSheetMeta: FinancialSheetMeta) {}
+
+  /**
+   * Retrieve the aging summary meta.
+   * @returns {IBalanceSheetMeta}
+   */
+  public async meta(query: IAgingSummaryQuery): Promise<IAgingSummaryMeta> {
+    const commonMeta = await this.financialSheetMeta.meta();
+    const formattedAsDate = moment(query.asDate).format('YYYY/MM/DD');
+    const formattedDateRange = `As ${formattedAsDate}`;
+
+    return {
+      ...commonMeta,
+      sheetName: 'A/P Aging Summary',
+      formattedAsDate,
+      formattedDateRange,
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/AgingSummary/AgingSummaryTable.ts

@@ -0,0 +1,219 @@
+import { I18nService } from 'nestjs-i18n';
+import * as R from 'ramda';
+import {
+  IAgingPeriod,
+  IAgingSummaryContact,
+  IAgingSummaryData,
+  IAgingSummaryQuery,
+  IAgingSummaryTotal,
+} from './AgingSummary.types';
+import { AgingReport } from './AgingReport';
+import { AgingSummaryRowType } from './_constants';
+import { FinancialSheetStructure } from '../../common/FinancialSheetStructure';
+import { FinancialTable } from '../../common/FinancialTable';
+import {
+  ITableColumn,
+  ITableColumnAccessor,
+  ITableRow,
+} from '../../types/Table.types';
+import { tableRowMapper } from '../../utils/Table.utils';
+
+export abstract class AgingSummaryTable extends R.pipe(
+  FinancialSheetStructure,
+  FinancialTable,
+)(AgingReport) {
+  readonly report: IAgingSummaryData;
+  readonly query: IAgingSummaryQuery;
+  readonly agingPeriods: IAgingPeriod[];
+  readonly i18n: I18nService;
+
+  /**
+   * Constructor method.
+   * @param {IARAgingSummaryData} data - Aging summary data.
+   * @param {IAgingSummaryQuery} query - Aging summary query.
+   * @param {I18nService} i18n - Internationalization service.
+   */
+  constructor(
+    data: IAgingSummaryData,
+    query: IAgingSummaryQuery,
+    i18n: I18nService,
+  ) {
+    super();
+
+    this.report = data;
+    this.i18n = i18n;
+    this.query = query;
+
+    this.agingPeriods = this.agingRangePeriods(
+      this.query.asDate,
+      this.query.agingDaysBefore,
+      this.query.agingPeriods,
+    );
+  }
+
+  // -------------------------
+  // # Accessors.
+  // -------------------------
+  /**
+   * Aging accessors of contact and total nodes.
+   * @param {IAgingSummaryContact | IAgingSummaryTotal} node
+   * @returns {ITableColumnAccessor[]}
+   */
+  protected agingNodeAccessors = (
+    node: IAgingSummaryContact | IAgingSummaryTotal,
+  ): ITableColumnAccessor[] => {
+    return node.aging.map((aging, index) => ({
+      key: 'aging_period',
+      accessor: `aging[${index}].total.formattedAmount`,
+    }));
+  };
+
+  /**
+   * Contact name node accessor.
+   * @returns {ITableColumnAccessor}
+   */
+  protected get contactNameNodeAccessor(): ITableColumnAccessor {
+    return { key: 'customer_name', accessor: 'customerName' };
+  }
+
+  /**
+   * Retrieves the common columns for all report nodes.
+   * @param {IAgingSummaryContact}
+   * @returns {ITableColumnAccessor[]}
+   */
+  protected contactNodeAccessors = (
+    node: IAgingSummaryContact,
+  ): ITableColumnAccessor[] => {
+    return R.compose(
+      R.concat([
+        this.contactNameNodeAccessor,
+        { key: 'current', accessor: 'current.formattedAmount' },
+        ...this.agingNodeAccessors(node),
+        { key: 'total', accessor: 'total.formattedAmount' },
+      ]),
+    )([]);
+  };
+
+  /**
+   * Retrieves the contact name table row.
+   * @param {IAgingSummaryContact} node -
+   * @return {ITableRow}
+   */
+  protected contactNameNode = (node: IAgingSummaryContact): ITableRow => {
+    const columns = this.contactNodeAccessors(node);
+    const meta = {
+      rowTypes: [AgingSummaryRowType.Contact],
+    };
+    return tableRowMapper(node, columns, meta);
+  };
+
+  /**
+   * Maps the customers nodes to table rows.
+   * @param {IAgingSummaryContact[]} nodes
+   * @returns {ITableRow[]}
+   */
+  protected contactsNodes = (nodes: IAgingSummaryContact[]): ITableRow[] => {
+    return nodes.map(this.contactNameNode);
+  };
+
+  /**
+   * Retrieves the common columns for all report nodes.
+   * @param {IAgingSummaryTotal}
+   * @returns {ITableColumnAccessor[]}
+   */
+  protected totalNodeAccessors = (
+    node: IAgingSummaryTotal,
+  ): ITableColumnAccessor[] => {
+    // @ts-ignore
+    return R.compose(
+      R.concat([
+        { key: 'blank', value: '' },
+        { key: 'current', accessor: 'current.formattedAmount' },
+        ...this.agingNodeAccessors(node),
+        { key: 'total', accessor: 'total.formattedAmount' },
+      ]),
+    )([]);
+  };
+
+  /**
+   * Retrieves the total row of the given report total node.
+   * @param {IAgingSummaryTotal} node
+   * @returns {ITableRow}
+   */
+  protected totalNode = (node: IAgingSummaryTotal): ITableRow => {
+    const columns = this.totalNodeAccessors(node);
+    const meta = {
+      rowTypes: [AgingSummaryRowType.Total],
+    };
+    return tableRowMapper(node, columns, meta);
+  };
+
+  // -------------------------
+  // # Computed Rows.
+  // -------------------------
+  /**
+   * Retrieves the contacts table rows.
+   * @returns {ITableRow[]}
+   */
+  protected get contactsRows(): ITableRow[] {
+    return [];
+  }
+
+  /**
+   * Table total row.
+   * @returns {ITableRow}
+   */
+  protected get totalRow(): ITableRow {
+    return this.totalNode(this.report.total);
+  }
+
+  /**
+   * Retrieves the table rows.
+   * @returns {ITableRow[]}
+   */
+  public tableRows = (): ITableRow[] => {
+    return R.compose(
+      R.unless(R.isEmpty, R.append(this.totalRow)),
+      R.concat(this.contactsRows),
+    )([]);
+  };
+
+  // -------------------------
+  // # Columns.
+  // -------------------------
+  /**
+   * Retrieves the aging table columns.
+   * @returns {ITableColumn[]}
+   */
+  protected agingTableColumns = (): ITableColumn[] => {
+    return this.agingPeriods.map((agingPeriod) => {
+      return {
+        label: `${agingPeriod.beforeDays} - ${
+          agingPeriod.toDays || 'And Over'
+        }`,
+        key: 'aging_period',
+      };
+    });
+  };
+
+  /**
+   * Retrieves the contact name table column.
+   * @returns {ITableColumn}
+   */
+  protected contactNameTableColumn = (): ITableColumn => {
+    return { label: 'Customer name', key: 'customer_name' };
+  };
+
+  /**
+   * Retrieves the report columns.
+   * @returns {ITableColumn}
+   */
+  public tableColumns = (): ITableColumn[] => {
+    return R.compose(this.tableColumnsCellIndexing)([
+      this.contactNameTableColumn(),
+      { label: 'Current', key: 'current' },
+      ...this.agingTableColumns(),
+      { label: 'Total', key: 'total' },
+    ]);
+  };
+}

packages/server-nest/src/modules/FinancialStatements/modules/AgingSummary/_constants.ts

@@ -0,0 +1,21 @@
+export enum AgingSummaryRowType {
+  Contact = 'contact',
+  Total = 'total',
+}
+
+export const HtmlTableCss = `
+table tr.row-type--total td{
+  font-weight: 600;
+  border-top: 1px solid #bbb;
+  border-bottom: 3px double #333;
+}
+
+table .column--current,
+table .column--aging_period,
+table .column--total,
+table .cell--current,
+table .cell--aging_period,
+table .cell--total  {
+  text-align: right;
+}
+`;

packages/server-nest/src/modules/FinancialStatements/modules/InventoryItemDetails/InventoryItemDetails.controller.ts

@@ -0,0 +1,54 @@
+import { Controller, Headers, Query, Res } from '@nestjs/common';
+import { InventortyDetailsApplication } from './InventoryItemDetailsApplication';
+import { IInventoryDetailsQuery } from './InventoryItemDetails.types';
+import { AcceptType } from '@/constants/accept-type';
+import { Response } from 'express';
+
+@Controller('reports/inventory-item-details')
+export class InventoryItemDetailsController {
+  constructor(
+    private readonly inventoryItemDetailsApp: InventortyDetailsApplication,
+  ) {}
+
+  async inventoryItemDetails(
+    @Query() query: IInventoryDetailsQuery,
+    @Res() res: Response,
+    @Headers('accept') acceptHeader: string,
+  ) {
+    if (acceptHeader.includes(AcceptType.ApplicationCsv)) {
+      const buffer = await this.inventoryItemDetailsApp.csv(query);
+
+      res.setHeader('Content-Disposition', 'attachment; filename=output.csv');
+      res.setHeader('Content-Type', 'text/csv');
+
+      return res.send(buffer);
+      // Retrieves the xlsx format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationXlsx)) {
+      const buffer = await this.inventoryItemDetailsApp.xlsx(query);
+
+      res.setHeader('Content-Disposition', 'attachment; filename=output.xlsx');
+      res.setHeader(
+        'Content-Type',
+        'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+      );
+      return res.send(buffer);
+      // Retrieves the json table format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationJsonTable)) {
+      const table = await this.inventoryItemDetailsApp.table(query);
+      return res.status(200).send(table);
+      // Retrieves the pdf format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationPdf)) {
+      const buffer = await this.inventoryItemDetailsApp.pdf(query);
+
+      res.set({
+        'Content-Type': 'application/pdf',
+        'Content-Length': buffer.length,
+      });
+      return res.send(buffer);
+    } else {
+      const sheet = await this.inventoryItemDetailsApp.sheet(query);
+
+      return res.status(200).send(sheet);
+    }
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryItemDetails/InventoryItemDetails.module.ts

@@ -0,0 +1,19 @@
+import { Module } from '@nestjs/common';
+import { InventoryItemDetailsController } from './InventoryItemDetails.controller';
+import { InventoryDetailsTablePdf } from './InventoryItemDetailsTablePdf';
+import { InventoryDetailsService } from './InventoryItemDetailsService';
+import { InventoryDetailsTableInjectable } from './InventoryItemDetailsTableInjectable';
+import { InventoryItemDetailsExportInjectable } from './InventoryItemDetailsExportInjectable';
+import { InventoryItemDetailsApplication } from './InventoryItemDetailsApplication';
+
+@Module({
+  providers: [
+    InventoryItemDetailsApplication,
+    InventoryItemDetailsExportInjectable,
+    InventoryDetailsTableInjectable,
+    InventoryDetailsService,
+    InventoryDetailsTablePdf,
+  ],
+  controllers: [InventoryItemDetailsController],
+})
+export class InventoryItemDetailsModule {}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryItemDetails/InventoryItemDetails.ts

@@ -0,0 +1,428 @@
+import * as R from 'ramda';
+import { defaultTo, sumBy, get } from 'lodash';
+import moment from 'moment';
+import {
+  IInventoryDetailsQuery,
+  IInventoryDetailsNumber,
+  IInventoryDetailsDate,
+  IInventoryDetailsData,
+  IInventoryDetailsItem,
+  IInventoryDetailsClosing,
+  IInventoryDetailsOpening,
+  IInventoryDetailsItemTransaction,
+} from './InventoryItemDetails.types';
+import FinancialSheet from '../FinancialSheet';
+import { transformToMapBy, transformToMapKeyValue } from 'utils';
+import { filterDeep } from 'utils/deepdash';
+
+const MAP_CONFIG = { childrenPath: 'children', pathFormat: 'array' };
+
+enum INodeTypes {
+  ITEM = 'item',
+  TRANSACTION = 'transaction',
+  OPENING_ENTRY = 'OPENING_ENTRY',
+  CLOSING_ENTRY = 'CLOSING_ENTRY',
+}
+
+export class InventoryDetails extends FinancialSheet {
+  readonly inventoryTransactionsByItemId: Map<number, IInventoryTransaction[]>;
+  readonly openingBalanceTransactions: Map<number, IInventoryTransaction>;
+  readonly query: IInventoryDetailsQuery;
+  readonly numberFormat: INumberFormatQuery;
+  readonly baseCurrency: string;
+  readonly items: IItem[];
+
+  /**
+   * Constructor method.
+   * @param {IItem[]} items - Items.
+   * @param {IInventoryTransaction[]} inventoryTransactions - Inventory transactions.
+   * @param {IInventoryDetailsQuery} query - Report query.
+   * @param {string} baseCurrency - The base currency.
+   */
+  constructor(
+    items: IItem[],
+    openingBalanceTransactions: IInventoryTransaction[],
+    inventoryTransactions: IInventoryTransaction[],
+    query: IInventoryDetailsQuery,
+    baseCurrency: string,
+    i18n: any
+  ) {
+    super();
+
+    this.inventoryTransactionsByItemId = transformToMapBy(
+      inventoryTransactions,
+      'itemId'
+    );
+    this.openingBalanceTransactions = transformToMapKeyValue(
+      openingBalanceTransactions,
+      'itemId'
+    );
+    this.query = query;
+    this.numberFormat = this.query.numberFormat;
+    this.items = items;
+    this.baseCurrency = baseCurrency;
+    this.i18n = i18n;
+  }
+
+  /**
+   * Retrieve the number meta.
+   * @param {number} number
+   * @returns
+   */
+  private getNumberMeta(
+    number: number,
+    settings?: IFormatNumberSettings
+  ): IInventoryDetailsNumber {
+    return {
+      formattedNumber: this.formatNumber(number, {
+        excerptZero: true,
+        money: false,
+        ...settings,
+      }),
+      number: number,
+    };
+  }
+
+  /**
+   * Retrieve the total number meta.
+   * @param {number} number -
+   * @param {IFormatNumberSettings} settings -
+   * @retrun {IInventoryDetailsNumber}
+   */
+  private getTotalNumberMeta(
+    number: number,
+    settings?: IFormatNumberSettings
+  ): IInventoryDetailsNumber {
+    return this.getNumberMeta(number, { excerptZero: false, ...settings });
+  }
+
+  /**
+   * Retrieve the date meta.
+   * @param {Date|string} date
+   * @returns {IInventoryDetailsDate}
+   */
+  private getDateMeta(date: Date | string): IInventoryDetailsDate {
+    return {
+      formattedDate: moment(date).format('YYYY-MM-DD'),
+      date: moment(date).toDate(),
+    };
+  }
+
+  /**
+   * Adjusts the movement amount.
+   * @param {number} amount
+   * @param {TInventoryTransactionDirection} direction
+   * @returns {number}
+   */
+  private adjustAmountMovement = R.curry(
+    (direction: TInventoryTransactionDirection, amount: number): number => {
+      return direction === 'OUT' ? amount * -1 : amount;
+    }
+  );
+
+  /**
+   * Accumulate and mapping running quantity on transactions.
+   * @param {IInventoryDetailsItemTransaction[]} transactions
+   * @returns {IInventoryDetailsItemTransaction[]}
+   */
+  private mapAccumTransactionsRunningQuantity(
+    transactions: IInventoryDetailsItemTransaction[]
+  ): IInventoryDetailsItemTransaction[] {
+    const initial = this.getNumberMeta(0);
+
+    const mapAccumAppender = (a, b) => {
+      const total = a.runningQuantity.number + b.quantityMovement.number;
+      const totalMeta = this.getNumberMeta(total, { excerptZero: false });
+      const accum = { ...b, runningQuantity: totalMeta };
+
+      return [accum, accum];
+    };
+    return R.mapAccum(
+      mapAccumAppender,
+      { runningQuantity: initial },
+      transactions
+    )[1];
+  }
+
+  /**
+   * Accumulate and mapping running valuation on transactions.
+   * @param {IInventoryDetailsItemTransaction[]} transactions
+   * @returns {IInventoryDetailsItemTransaction}
+   */
+  private mapAccumTransactionsRunningValuation(
+    transactions: IInventoryDetailsItemTransaction[]
+  ): IInventoryDetailsItemTransaction[] {
+    const initial = this.getNumberMeta(0);
+
+    const mapAccumAppender = (a, b) => {
+      const adjustment = b.direction === 'OUT' ? -1 : 1;
+      const total = a.runningValuation.number + b.cost.number * adjustment;
+      const totalMeta = this.getNumberMeta(total, { excerptZero: false });
+      const accum = { ...b, runningValuation: totalMeta };
+
+      return [accum, accum];
+    };
+    return R.mapAccum(
+      mapAccumAppender,
+      { runningValuation: initial },
+      transactions
+    )[1];
+  }
+
+  /**
+   * Retrieve the inventory transaction total.
+   * @param {IInventoryTransaction} transaction
+   * @returns {number}
+   */
+  private getTransactionTotal = (transaction: IInventoryTransaction) => {
+    return transaction.quantity
+      ? transaction.quantity * transaction.rate
+      : transaction.rate;
+  };
+
+  /**
+   * Mappes the item transaction to inventory item transaction node.
+   * @param {IItem} item
+   * @param {IInvetoryTransaction} transaction
+   * @returns {IInventoryDetailsItemTransaction}
+   */
+  private itemTransactionMapper(
+    item: IItem,
+    transaction: IInventoryTransaction
+  ): IInventoryDetailsItemTransaction {
+    const total = this.getTransactionTotal(transaction);
+    const amountMovement = this.adjustAmountMovement(transaction.direction);
+
+    // Quantity movement.
+    const quantityMovement = amountMovement(transaction.quantity);
+    const cost = get(transaction, 'costLotAggregated.cost', 0);
+
+    // Profit margin.
+    const profitMargin = total - cost;
+
+    // Value from computed cost in `OUT` or from total sell price in `IN` transaction.
+    const value = transaction.direction === 'OUT' ? cost : total;
+
+    // Value movement depends on transaction direction.
+    const valueMovement = amountMovement(value);
+
+    return {
+      nodeType: INodeTypes.TRANSACTION,
+      date: this.getDateMeta(transaction.date),
+      transactionType: this.i18n.__(transaction.transcationTypeFormatted),
+      transactionNumber: transaction?.meta?.transactionNumber,
+      direction: transaction.direction,
+
+      quantityMovement: this.getNumberMeta(quantityMovement),
+      valueMovement: this.getNumberMeta(valueMovement),
+
+      quantity: this.getNumberMeta(transaction.quantity),
+      total: this.getNumberMeta(total),
+
+      rate: this.getNumberMeta(transaction.rate),
+      cost: this.getNumberMeta(cost),
+      value: this.getNumberMeta(value),
+
+      profitMargin: this.getNumberMeta(profitMargin),
+
+      runningQuantity: this.getNumberMeta(0),
+      runningValuation: this.getNumberMeta(0),
+    };
+  }
+
+  /**
+   * Retrieve the inventory transcations by item id.
+   * @param {number} itemId
+   * @returns {IInventoryTransaction[]}
+   */
+  private getInventoryTransactionsByItemId(
+    itemId: number
+  ): IInventoryTransaction[] {
+    return defaultTo(this.inventoryTransactionsByItemId.get(itemId + ''), []);
+  }
+
+  /**
+   * Retrieve the item transaction node by the given item.
+   * @param {IItem} item
+   * @returns {IInventoryDetailsItemTransaction[]}
+   */
+  private getItemTransactions(item: IItem): IInventoryDetailsItemTransaction[] {
+    const transactions = this.getInventoryTransactionsByItemId(item.id);
+
+    return R.compose(
+      this.mapAccumTransactionsRunningQuantity.bind(this),
+      this.mapAccumTransactionsRunningValuation.bind(this),
+      R.map(R.curry(this.itemTransactionMapper.bind(this))(item))
+    )(transactions);
+  }
+
+  /**
+   * Mappes the given item transactions.
+   * @param {IItem} item -
+   * @returns {(
+   *    IInventoryDetailsItemTransaction
+   *  | IInventoryDetailsOpening
+   *  | IInventoryDetailsClosing
+   *  )[]}
+   */
+  private itemTransactionsMapper(
+    item: IItem
+  ): (
+    | IInventoryDetailsItemTransaction
+    | IInventoryDetailsOpening
+    | IInventoryDetailsClosing
+  )[] {
+    const transactions = this.getItemTransactions(item);
+    const openingValuation = this.getItemOpeingValuation(item);
+    const closingValuation = this.getItemClosingValuation(
+      item,
+      transactions,
+      openingValuation
+    );
+    const hasTransactions = transactions.length > 0;
+    const isItemHasOpeningBalance = this.isItemHasOpeningBalance(item.id);
+
+    return R.pipe(
+      R.concat(transactions),
+      R.when(R.always(isItemHasOpeningBalance), R.prepend(openingValuation)),
+      R.when(R.always(hasTransactions), R.append(closingValuation))
+    )([]);
+  }
+
+  /**
+   * Detarmines the given item has opening balance transaction.
+   * @param {number} itemId - Item id.
+   * @return {boolean}
+   */
+  private isItemHasOpeningBalance(itemId: number): boolean {
+    return !!this.openingBalanceTransactions.get(itemId);
+  }
+
+  /**
+   * Retrieve the given item opening valuation.
+   * @param {IItem} item -
+   * @returns {IInventoryDetailsOpening}
+   */
+  private getItemOpeingValuation(item: IItem): IInventoryDetailsOpening {
+    const openingBalance = this.openingBalanceTransactions.get(item.id);
+    const quantity = defaultTo(get(openingBalance, 'quantity'), 0);
+    const value = defaultTo(get(openingBalance, 'value'), 0);
+
+    return {
+      nodeType: INodeTypes.OPENING_ENTRY,
+      date: this.getDateMeta(this.query.fromDate),
+      quantity: this.getTotalNumberMeta(quantity),
+      value: this.getTotalNumberMeta(value),
+    };
+  }
+
+  /**
+   * Retrieve the given item closing valuation.
+   * @param {IItem} item -
+   * @returns {IInventoryDetailsOpening}
+   */
+  private getItemClosingValuation(
+    item: IItem,
+    transactions: IInventoryDetailsItemTransaction[],
+    openingValuation: IInventoryDetailsOpening
+  ): IInventoryDetailsOpening {
+    const value = sumBy(transactions, 'valueMovement.number');
+    const quantity = sumBy(transactions, 'quantityMovement.number');
+    const profitMargin = sumBy(transactions, 'profitMargin.number');
+
+    const closingQuantity = quantity + openingValuation.quantity.number;
+    const closingValue = value + openingValuation.value.number;
+
+    return {
+      nodeType: INodeTypes.CLOSING_ENTRY,
+      date: this.getDateMeta(this.query.toDate),
+      quantity: this.getTotalNumberMeta(closingQuantity),
+      value: this.getTotalNumberMeta(closingValue),
+      profitMargin: this.getTotalNumberMeta(profitMargin),
+    };
+  }
+
+  /**
+   * Retrieve the item node of the report.
+   * @param {IItem} item
+   * @returns {IInventoryDetailsItem}
+   */
+  private itemsNodeMapper(item: IItem): IInventoryDetailsItem {
+    return {
+      id: item.id,
+      name: item.name,
+      code: item.code,
+      nodeType: INodeTypes.ITEM,
+      children: this.itemTransactionsMapper(item),
+    };
+  }
+
+  /**
+   * Detarmines the given node equals the given type.
+   * @param {string} nodeType
+   * @param {IItem} node
+   * @returns {boolean}
+   */
+  private isNodeTypeEquals(
+    nodeType: string,
+    node: IInventoryDetailsItem
+  ): boolean {
+    return nodeType === node.nodeType;
+  }
+
+  /**
+   * Detarmines whether the given item node has transactions.
+   * @param {IInventoryDetailsItem} item
+   * @returns {boolean}
+   */
+  private isItemNodeHasTransactions(item: IInventoryDetailsItem) {
+    return !!this.inventoryTransactionsByItemId.get(item.id);
+  }
+
+  /**
+   * Detarmines the filter
+   * @param {IInventoryDetailsItem} item
+   * @return {boolean}
+   */
+  private isFilterNode(item: IInventoryDetailsItem): boolean {
+    return R.ifElse(
+      R.curry(this.isNodeTypeEquals)(INodeTypes.ITEM),
+      this.isItemNodeHasTransactions.bind(this),
+      R.always(true)
+    )(item);
+  }
+
+  /**
+   * Filters items nodes.
+   * @param {IInventoryDetailsItem[]} items -
+   * @returns {IInventoryDetailsItem[]}
+   */
+  private filterItemsNodes(items: IInventoryDetailsItem[]) {
+    const filtered = filterDeep(
+      items,
+      this.isFilterNode.bind(this),
+      MAP_CONFIG
+    );
+    return defaultTo(filtered, []);
+  }
+
+  /**
+   * Retrieve the items nodes of the report.
+   * @param {IItem} items
+   * @returns {IInventoryDetailsItem[]}
+   */
+  private itemsNodes(items: IItem[]): IInventoryDetailsItem[] {
+    return R.compose(
+      this.filterItemsNodes.bind(this),
+      R.map(this.itemsNodeMapper.bind(this))
+    )(items);
+  }
+
+  /**
+   * Retrieve the inventory item details report data.
+   * @returns {IInventoryDetailsData}
+   */
+  public reportData(): IInventoryDetailsData {
+    return this.itemsNodes(this.items);
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryItemDetails/InventoryItemDetails.types.ts

@@ -0,0 +1,101 @@
+import {
+  IFinancialSheetCommonMeta,
+  INumberFormatQuery,
+} from '../../types/Report.types';
+import { IFinancialTable } from '../../types/Table.types';
+
+export interface IInventoryDetailsQuery {
+  fromDate: Date | string;
+  toDate: Date | string;
+  numberFormat: INumberFormatQuery;
+  noneTransactions: boolean;
+  itemsIds: number[];
+
+  warehousesIds?: number[];
+  branchesIds?: number[];
+}
+
+export interface IInventoryDetailsNumber {
+  number: number;
+  formattedNumber: string;
+}
+
+export interface IInventoryDetailsMoney {
+  amount: number;
+  formattedAmount: string;
+  currencyCode: string;
+}
+
+export interface IInventoryDetailsDate {
+  date: Date;
+  formattedDate: string;
+}
+
+export interface IInventoryDetailsOpening {
+  nodeType: 'OPENING_ENTRY';
+  date: IInventoryDetailsDate;
+  quantity: IInventoryDetailsNumber;
+  value: IInventoryDetailsNumber;
+}
+
+export interface IInventoryDetailsClosing
+  extends Omit<IInventoryDetailsOpening, 'nodeType'> {
+  nodeType: 'CLOSING_ENTRY';
+}
+
+export interface IInventoryDetailsItem {
+  id: number;
+  nodeType: string;
+  name: string;
+  code: string;
+  children: (
+    | IInventoryDetailsItemTransaction
+    | IInventoryDetailsOpening
+    | IInventoryDetailsClosing
+  )[];
+}
+
+export interface IInventoryDetailsItemTransaction {
+  nodeType: string;
+  date: IInventoryDetailsDate;
+  transactionType: string;
+  transactionNumber?: string;
+
+  quantityMovement: IInventoryDetailsNumber;
+  valueMovement: IInventoryDetailsNumber;
+
+  quantity: IInventoryDetailsNumber;
+  total: IInventoryDetailsNumber;
+  cost: IInventoryDetailsNumber;
+  value: IInventoryDetailsNumber;
+  profitMargin: IInventoryDetailsNumber;
+
+  rate: IInventoryDetailsNumber;
+
+  runningQuantity: IInventoryDetailsNumber;
+  runningValuation: IInventoryDetailsNumber;
+
+  direction: string;
+}
+
+export type IInventoryDetailsNode =
+  | IInventoryDetailsItem
+  | IInventoryDetailsItemTransaction;
+export type IInventoryDetailsData = IInventoryDetailsItem[];
+
+export interface IInventoryItemDetailMeta extends IFinancialSheetCommonMeta {
+  formattedFromDate: string;
+  formattedToDay: string;
+  formattedDateRange: string;
+}
+
+export interface IInvetoryItemDetailDOO {
+  data: IInventoryDetailsData;
+  query: IInventoryDetailsQuery;
+  meta: IInventoryItemDetailMeta;
+}
+
+export interface IInvetoryItemDetailsTable extends IFinancialTable {
+  query: IInventoryDetailsQuery;
+  meta: IInventoryItemDetailMeta;
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryItemDetails/InventoryItemDetailsApplication.ts

@@ -0,0 +1,67 @@
+import {
+  IInventoryDetailsQuery,
+  IInvetoryItemDetailsTable,
+} from '@/interfaces';
+import { InventoryItemDetailsExportInjectable } from './InventoryItemDetailsExportInjectable';
+import { InventoryDetailsTableInjectable } from './InventoryItemDetailsTableInjectable';
+import { InventoryDetailsService } from './InventoryItemDetailsService';
+import { InventoryDetailsTablePdf } from './InventoryItemDetailsTablePdf';
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class InventoryItemDetailsApplication {
+  constructor(
+    private readonly inventoryDetailsExport: InventoryItemDetailsExportInjectable,
+    private readonly inventoryDetailsTable: InventoryDetailsTableInjectable,
+    private readonly inventoryDetails: InventoryDetailsService,
+    private readonly inventoryDetailsPdf: InventoryDetailsTablePdf,
+  ) {}
+
+  /**
+   * Retrieves the inventory details report in sheet format.
+   * @param {number} tenantId
+   * @param {IInventoryDetailsQuery} query
+   * @returns {Promise<IInvetoryItemDetailDOO>}
+   */
+  public sheet(query: IInventoryDetailsQuery) {
+    return this.inventoryDetails.inventoryDetails(query);
+  }
+
+  /**
+   * Retrieve the inventory details report in table format.
+   * @param {IInventoryDetailsQuery} query - Inventory details query.
+   * @returns
+   */
+  public table(
+    query: IInventoryDetailsQuery,
+  ): Promise<IInvetoryItemDetailsTable> {
+    return this.inventoryDetailsTable.table(query);
+  }
+
+  /**
+   * Retrieves the inventory details report in XLSX format.
+   * @param {IInventoryDetailsQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public xlsx(query: IInventoryDetailsQuery): Promise<Buffer> {
+    return this.inventoryDetailsExport.xlsx(query);
+  }
+
+  /**
+   * Retrieves the inventory details report in CSV format.
+   * @param {IInventoryDetailsQuery} query
+   * @returns {Promise<string>}
+   */
+  public csv(query: IInventoryDetailsQuery): Promise<string> {
+    return this.inventoryDetailsExport.csv(query);
+  }
+
+  /**
+   * Retrieves the inventory details report in PDF format.
+   * @param {IInventoryDetailsQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public pdf(query: IInventoryDetailsQuery) {
+    return this.inventoryDetailsPdf.pdf(query);
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryItemDetails/InventoryItemDetailsExportInjectable.ts

@@ -0,0 +1,39 @@
+import { InventoryDetailsTableInjectable } from './InventoryItemDetailsTableInjectable';
+import { Injectable } from '@nestjs/common';
+import { IInventoryDetailsQuery } from './InventoryItemDetails.types';
+import { TableSheet } from '../../common/TableSheet';
+
+@Injectable()
+export class InventoryItemDetailsExportInjectable {
+  constructor(
+    private readonly inventoryDetailsTable: InventoryDetailsTableInjectable,
+  ) {}
+
+  /**
+   * Retrieves the trial balance sheet in XLSX format.
+   * @param {IInventoryDetailsQuery} query - Inventory details query.
+   * @returns {Promise<Buffer>}
+   */
+  public async xlsx(query: IInventoryDetailsQuery) {
+    const table = await this.inventoryDetailsTable.table(query);
+
+    const tableSheet = new TableSheet(table.table);
+    const tableCsv = tableSheet.convertToXLSX();
+
+    return tableSheet.convertToBuffer(tableCsv, 'xlsx');
+  }
+
+  /**
+   * Retrieves the trial balance sheet in CSV format.
+   * @param {IInventoryDetailsQuery} query - Inventory details query.
+   * @returns {Promise<Buffer>}
+   */
+  public async csv(query: IInventoryDetailsQuery): Promise<string> {
+    const table = await this.inventoryDetailsTable.table(query);
+
+    const tableSheet = new TableSheet(table.table);
+    const tableCsv = tableSheet.convertToCSV();
+
+    return tableCsv;
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryItemDetails/InventoryItemDetailsMeta.ts

@@ -0,0 +1,36 @@
+import { Injectable } from '@nestjs/common';
+import * as moment from 'moment';
+import {
+  IInventoryDetailsQuery,
+  IInventoryItemDetailMeta,
+} from './InventoryItemDetails.types';
+import { FinancialSheetMeta } from '../../common/FinancialSheetMeta';
+
+@Injectable()
+export class InventoryDetailsMetaInjectable {
+  constructor(private readonly financialSheetMeta: FinancialSheetMeta) {}
+
+  /**
+   * Retrieve the inventoy details meta.
+   * @returns {IInventoryItemDetailMeta}
+   */
+  public async meta(
+    query: IInventoryDetailsQuery,
+  ): Promise<IInventoryItemDetailMeta> {
+    const commonMeta = await this.financialSheetMeta.meta();
+
+    const formattedFromDate = moment(query.fromDate).format('YYYY/MM/DD');
+    const formattedToDay = moment(query.toDate).format('YYYY/MM/DD');
+    const formattedDateRange = `From ${formattedFromDate} | To ${formattedToDay}`;
+
+    const sheetName = 'Inventory Item Details';
+
+    return {
+      ...commonMeta,
+      sheetName,
+      formattedFromDate,
+      formattedToDay,
+      formattedDateRange,
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryItemDetails/InventoryItemDetailsRepository.ts

@@ -0,0 +1,116 @@
+import { ModelObject, raw } from 'objection';
+import { isEmpty } from 'lodash';
+import moment from 'moment';
+import { IInventoryDetailsQuery } from './InventoryItemDetails.types';
+import { Item } from '@/modules/Items/models/Item';
+import { InventoryTransaction } from '@/modules/InventoryCost/models/InventoryTransaction';
+import { Injectable, Scope } from '@nestjs/common';
+
+@Injectable({ scope: Scope.TRANSIENT })
+export class InventoryItemDetailsRepository {
+  /**
+   * Constructor method.
+   * @param {typeof Item} itemModel - Item model.
+   * @param {typeof InventoryTransaction} inventoryTransactionModel - Inventory transaction model.
+   */
+  constructor(
+    private readonly itemModel: typeof Item,
+    private readonly inventoryTransactionModel: typeof InventoryTransaction,
+  ) {}
+
+  /**
+   * Retrieve inventory items.
+   * @returns {Promise<ModelObject<Item>>}
+   */
+  public async getInventoryItems(
+    itemsIds?: number[],
+  ): Promise<ModelObject<Item>[]> {
+    return this.itemModel.query().onBuild((q) => {
+      q.where('type', 'inventory');
+
+      if (!isEmpty(itemsIds)) {
+        q.whereIn('id', itemsIds);
+      }
+    });
+  }
+
+  /**
+   * Retrieve the items opening balance transactions.
+   * @param {IInventoryDetailsQuery}
+   * @return {Promise<ModelObject<InventoryTransaction>>}
+   */
+  public async openingBalanceTransactions(
+    filter: IInventoryDetailsQuery,
+  ): Promise<ModelObject<InventoryTransaction>[]> {
+    const openingBalanceDate = moment(filter.fromDate)
+      .subtract(1, 'days')
+      .toDate();
+
+    // Opening inventory transactions.
+    const openingTransactions = this.inventoryTransactionModel
+      .query()
+      .select('*')
+      .select(raw("IF(`DIRECTION` = 'IN', `QUANTITY`, 0) as 'QUANTITY_IN'"))
+      .select(raw("IF(`DIRECTION` = 'OUT', `QUANTITY`, 0) as 'QUANTITY_OUT'"))
+      .select(
+        raw(
+          "IF(`DIRECTION` = 'IN', IF(`QUANTITY` IS NULL, `RATE`, `QUANTITY` * `RATE`), 0) as 'VALUE_IN'",
+        ),
+      )
+      .select(
+        raw(
+          "IF(`DIRECTION` = 'OUT', IF(`QUANTITY` IS NULL, `RATE`, `QUANTITY` * `RATE`), 0) as 'VALUE_OUT'",
+        ),
+      )
+      .modify('filterDateRange', null, openingBalanceDate)
+      .orderBy('date', 'ASC')
+      .as('inventory_transactions');
+
+    if (!isEmpty(filter.warehousesIds)) {
+      openingTransactions.modify('filterByWarehouses', filter.warehousesIds);
+    }
+    if (!isEmpty(filter.branchesIds)) {
+      openingTransactions.modify('filterByBranches', filter.branchesIds);
+    }
+
+    const openingBalanceTransactions = await this.inventoryTransactionModel
+      .query()
+      .from(openingTransactions)
+      .select('itemId')
+      .select(raw('SUM(`QUANTITY_IN` - `QUANTITY_OUT`) AS `QUANTITY`'))
+      .select(raw('SUM(`VALUE_IN` - `VALUE_OUT`) AS `VALUE`'))
+      .groupBy('itemId')
+      .sum('rate as rate')
+      .sum('quantityIn as quantityIn')
+      .sum('quantityOut as quantityOut')
+      .sum('valueIn as valueIn')
+      .sum('valueOut as valueOut')
+      .withGraphFetched('itemCostAggregated');
+
+    return openingBalanceTransactions;
+  }
+
+  /**
+   * Retrieve the items inventory tranasactions.
+   * @param {IInventoryDetailsQuery}
+   * @return {Promise<IInventoryTransaction>}
+   */
+  public async itemInventoryTransactions(
+    filter: IInventoryDetailsQuery,
+  ): Promise<ModelObject<InventoryTransaction>[]> {
+    const inventoryTransactions = this.inventoryTransactionModel
+      .query()
+      .modify('filterDateRange', filter.fromDate, filter.toDate)
+      .orderBy('date', 'ASC')
+      .withGraphFetched('meta')
+      .withGraphFetched('costLotAggregated');
+
+    if (!isEmpty(filter.branchesIds)) {
+      inventoryTransactions.modify('filterByBranches', filter.branchesIds);
+    }
+    if (!isEmpty(filter.warehousesIds)) {
+      inventoryTransactions.modify('filterByWarehouses', filter.warehousesIds);
+    }
+    return inventoryTransactions;
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryItemDetails/InventoryItemDetailsService.ts

@@ -0,0 +1,94 @@
+import moment from 'moment';
+import { Service, Inject } from 'typedi';
+import { IInventoryDetailsQuery, IInvetoryItemDetailDOO } from '@/interfaces';
+import TenancyService from '@/services/Tenancy/TenancyService';
+import { InventoryDetails } from './InventoryItemDetails';
+import FinancialSheet from '../FinancialSheet';
+import InventoryDetailsRepository from './InventoryItemDetailsRepository';
+import { Tenant } from '@/system/models';
+import { InventoryDetailsMetaInjectable } from './InventoryItemDetailsMeta';
+
+@Service()
+export class InventoryDetailsService extends FinancialSheet {
+  @Inject()
+  private tenancy: TenancyService;
+
+  @Inject()
+  private reportRepo: InventoryDetailsRepository;
+
+  @Inject()
+  private inventoryDetailsMeta: InventoryDetailsMetaInjectable;
+
+  /**
+   * Defaults balance sheet filter query.
+   * @return {IBalanceSheetQuery}
+   */
+  private get defaultQuery(): IInventoryDetailsQuery {
+    return {
+      fromDate: moment().startOf('month').format('YYYY-MM-DD'),
+      toDate: moment().format('YYYY-MM-DD'),
+      itemsIds: [],
+      numberFormat: {
+        precision: 2,
+        divideOn1000: false,
+        showZero: false,
+        formatMoney: 'total',
+        negativeFormat: 'mines',
+      },
+      noneTransactions: false,
+      branchesIds: [],
+      warehousesIds: [],
+    };
+  }
+
+  /**
+   * Retrieve the inventory details report data.
+   * @param {number} tenantId -
+   * @param {IInventoryDetailsQuery} query -
+   * @return {Promise<IInvetoryItemDetailDOO>}
+   */
+  public async inventoryDetails(
+    tenantId: number,
+    query: IInventoryDetailsQuery
+  ): Promise<IInvetoryItemDetailDOO> {
+    const i18n = this.tenancy.i18n(tenantId);
+
+    const tenant = await Tenant.query()
+      .findById(tenantId)
+      .withGraphFetched('metadata');
+
+    const filter = {
+      ...this.defaultQuery,
+      ...query,
+    };
+    // Retrieves the items.
+    const items = await this.reportRepo.getInventoryItems(
+      tenantId,
+      filter.itemsIds
+    );
+    // Opening balance transactions.
+    const openingBalanceTransactions =
+      await this.reportRepo.openingBalanceTransactions(tenantId, filter);
+
+    // Retrieves the inventory transaction.
+    const inventoryTransactions =
+      await this.reportRepo.itemInventoryTransactions(tenantId, filter);
+
+    // Inventory details report mapper.
+    const inventoryDetailsInstance = new InventoryDetails(
+      items,
+      openingBalanceTransactions,
+      inventoryTransactions,
+      filter,
+      tenant.metadata.baseCurrency,
+      i18n
+    );
+    const meta = await this.inventoryDetailsMeta.meta(tenantId, query);
+
+    return {
+      data: inventoryDetailsInstance.reportData(),
+      query: filter,
+      meta,
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryItemDetails/InventoryItemDetailsTable.ts

@@ -0,0 +1,198 @@
+import * as R from 'ramda';
+import {
+  IInventoryDetailsItem,
+  IInventoryDetailsItemTransaction,
+  IInventoryDetailsClosing,
+  IInventoryDetailsNode,
+  IInventoryDetailsOpening,
+} from './InventoryItemDetails.types';
+import { I18nService } from 'nestjs-i18n';
+import { IInventoryDetailsData } from './InventoryItemDetails.types';
+import { tableRowMapper } from '../../utils/Table.utils';
+import { ITableColumn, ITableRow } from '../../types/Table.types';
+import mapValuesDeep from 'deepdash/es/mapValuesDeep';
+
+enum IROW_TYPE {
+  ITEM = 'ITEM',
+  TRANSACTION = 'TRANSACTION',
+  CLOSING_ENTRY = 'CLOSING_ENTRY',
+  OPENING_ENTRY = 'OPENING_ENTRY',
+}
+
+const MAP_CONFIG = { childrenPath: 'children', pathFormat: 'array' };
+
+export class InventoryItemDetailsTable {
+  i18n: I18nService;
+  report: any;
+
+  /**
+   * Constructor method.
+   * @param {ICashFlowStatement} report - Report statement.
+   */
+  constructor(reportStatement: IInventoryDetailsData, i18n: I18nService) {
+    this.report = reportStatement;
+    this.i18n = i18n;
+  }
+
+  /**
+   * Mappes the item node to table rows.
+   * @param {IInventoryDetailsItem} item
+   * @returns {ITableRow}
+   */
+  private itemNodeMapper = (item: IInventoryDetailsItem) => {
+    const columns = [{ key: 'item_name', accessor: 'name' }];
+
+    return tableRowMapper(item, columns, {
+      rowTypes: [IROW_TYPE.ITEM],
+    });
+  };
+
+  /**
+   * Mappes the item inventory transaction to table row.
+   * @param {IInventoryDetailsItemTransaction} transaction
+   * @returns {ITableRow}
+   */
+  private itemTransactionNodeMapper = (
+    transaction: IInventoryDetailsItemTransaction
+  ) => {
+    const columns = [
+      { key: 'date', accessor: 'date.formattedDate' },
+      { key: 'transaction_type', accessor: 'transactionType' },
+      { key: 'transaction_id', accessor: 'transactionNumber' },
+      {
+        key: 'quantity_movement',
+        accessor: 'quantityMovement.formattedNumber',
+      },
+      { key: 'rate', accessor: 'rate.formattedNumber' },
+      { key: 'total', accessor: 'total.formattedNumber' },
+      { key: 'value', accessor: 'valueMovement.formattedNumber' },
+      { key: 'profit_margin', accessor: 'profitMargin.formattedNumber' },
+      { key: 'running_quantity', accessor: 'runningQuantity.formattedNumber' },
+      {
+        key: 'running_valuation',
+        accessor: 'runningValuation.formattedNumber',
+      },
+    ];
+    return tableRowMapper(transaction, columns, {
+      rowTypes: [IROW_TYPE.TRANSACTION],
+    });
+  };
+
+  /**
+   * Opening balance transaction mapper to table row.
+   * @param {IInventoryDetailsOpening} transaction
+   * @returns {ITableRow}
+   */
+  private openingNodeMapper = (
+    transaction: IInventoryDetailsOpening
+  ): ITableRow => {
+    const columns = [
+      { key: 'date', accessor: 'date.formattedDate' },
+      { key: 'closing', value: this.i18n.t('Opening balance') },
+      { key: 'empty' },
+      { key: 'quantity', accessor: 'quantity.formattedNumber' },
+      { key: 'empty' },
+      { key: 'empty' },
+      { key: 'value', accessor: 'value.formattedNumber' },
+    ];
+    return tableRowMapper(transaction, columns, {
+      rowTypes: [IROW_TYPE.OPENING_ENTRY],
+    });
+  };
+
+  /**
+   * Closing balance transaction mapper to table raw.
+   * @param {IInventoryDetailsClosing} transaction
+   * @returns {ITableRow}
+   */
+  private closingNodeMapper = (
+    transaction: IInventoryDetailsClosing
+  ): ITableRow => {
+    const columns = [
+      { key: 'date', accessor: 'date.formattedDate' },
+      { key: 'closing', value: this.i18n.t('Closing balance') },
+      { key: 'empty' },
+      { key: 'quantity', accessor: 'quantity.formattedNumber' },
+      { key: 'empty' },
+      { key: 'empty' },
+      { key: 'value', accessor: 'value.formattedNumber' },
+      { key: 'profitMargin', accessor: 'profitMargin.formattedNumber' },
+    ];
+
+    return tableRowMapper(transaction, columns, {
+      rowTypes: [IROW_TYPE.CLOSING_ENTRY],
+    });
+  };
+
+  /**
+   * Detarmines the ginve inventory details node type.
+   * @param {string} type
+   * @param {IInventoryDetailsNode} node
+   * @returns {boolean}
+   */
+  private isNodeTypeEquals = (
+    type: string,
+    node: IInventoryDetailsNode
+  ): boolean => {
+    return node.nodeType === type;
+  };
+
+  /**
+   * Mappes the given item or transactions node to table rows.
+   * @param {IInventoryDetailsNode} node -
+   * @return {ITableRow}
+   */
+  private itemMapper = (node: IInventoryDetailsNode): ITableRow => {
+    return R.compose(
+      R.when(
+        R.curry(this.isNodeTypeEquals)('OPENING_ENTRY'),
+        this.openingNodeMapper
+      ),
+      R.when(
+        R.curry(this.isNodeTypeEquals)('CLOSING_ENTRY'),
+        this.closingNodeMapper
+      ),
+      R.when(R.curry(this.isNodeTypeEquals)('item'), this.itemNodeMapper),
+      R.when(
+        R.curry(this.isNodeTypeEquals)('transaction'),
+        this.itemTransactionNodeMapper
+      )
+    )(node);
+  };
+
+  /**
+   * Mappes the items nodes to table rows.
+   * @param {IInventoryDetailsItem[]} items
+   * @returns {ITableRow[]}
+   */
+  private itemsMapper = (items: IInventoryDetailsItem[]): ITableRow[] => {
+    return mapValuesDeep(items, this.itemMapper, MAP_CONFIG);
+  };
+
+  /**
+   * Retrieve the table rows of the inventory item details.
+   * @returns {ITableRow[]}
+   */
+  public tableRows = (): ITableRow[] => {
+    return this.itemsMapper(this.report.data);
+  };
+
+  /**
+   * Retrieve the table columns of inventory details report.
+   * @returns {ITableColumn[]}
+   */
+  public tableColumns = (): ITableColumn[] => {
+    return [
+      { key: 'date', label: this.i18n.t('Date') },
+      { key: 'transaction_type', label: this.i18n.t('Transaction type') },
+      { key: 'transaction_id', label: this.i18n.t('Transaction #') },
+      { key: 'quantity', label: this.i18n.t('Quantity') },
+      { key: 'rate', label: this.i18n.t('Rate') },
+      { key: 'total', label: this.i18n.t('Total') },
+      { key: 'value', label: this.i18n.t('Value') },
+      { key: 'profit_margin', label: this.i18n.t('Profit Margin') },
+      { key: 'running_quantity', label: this.i18n.t('Running quantity') },
+      { key: 'running_value', label: this.i18n.t('Running Value') },
+    ];
+  };
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryItemDetails/InventoryItemDetailsTableInjectable.ts

@@ -0,0 +1,38 @@
+import { InventoryDetailsTable } from './InventoryItemDetailsTable';
+import {
+  IInventoryDetailsQuery,
+  IInvetoryItemDetailsTable,
+} from './InventoryItemDetails.types';
+import { InventoryDetailsService } from './InventoryItemDetailsService';
+import { Injectable } from '@nestjs/common';
+import { I18nService } from 'nestjs-i18n';
+
+@Injectable()
+export class InventoryDetailsTableInjectable {
+  constructor(
+    private readonly inventoryDetails: InventoryDetailsService,
+    private readonly i18n: I18nService,
+  ) {}
+
+  /**
+   * Retrieves the inventory item details in table format.
+   * @param {IInventoryDetailsQuery} query - Inventory details query.
+   * @returns {Promise<IInvetoryItemDetailsTable>}
+   */
+  public async table(
+    query: IInventoryDetailsQuery,
+  ): Promise<IInvetoryItemDetailsTable> {
+    const inventoryDetails =
+      await this.inventoryDetails.inventoryDetails(query);
+    const table = new InventoryDetailsTable(inventoryDetails, this.i18n);
+
+    return {
+      table: {
+        rows: table.tableRows(),
+        columns: table.tableColumns(),
+      },
+      query: inventoryDetails.query,
+      meta: inventoryDetails.meta,
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryItemDetails/InventoryItemDetailsTablePdf.ts

@@ -0,0 +1,34 @@
+import { TableSheetPdf } from '../../common/TableSheetPdf';
+import { InventoryDetailsTableInjectable } from './InventoryItemDetailsTableInjectable';
+import { IInventoryDetailsQuery } from './InventoryItemDetails.types';
+import { HtmlTableCustomCss } from './constant';
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class InventoryDetailsTablePdf {
+  /***
+   * Constructor method.
+   * @param {InventoryDetailsTableInjectable} inventoryDetailsTable - Inventory details table injectable.
+   * @param {TableSheetPdf} tableSheetPdf - Table sheet pdf.
+   */
+  constructor(
+    private readonly inventoryDetailsTable: InventoryDetailsTableInjectable,
+    private readonly tableSheetPdf: TableSheetPdf,
+  ) {}
+
+  /**
+   * Converts the given inventory details sheet table to pdf.
+   * @param {IBalanceSheetQuery} query - Balance sheet query.
+   * @returns {Promise<Buffer>}
+   */
+  public async pdf(query: IInventoryDetailsQuery): Promise<Buffer> {
+    const table = await this.inventoryDetailsTable.table(query);
+
+    return this.tableSheetPdf.convertToPdf(
+      table.table,
+      table.meta.sheetName,
+      table.meta.formattedDateRange,
+      HtmlTableCustomCss,
+    );
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryItemDetails/constant.ts

@@ -0,0 +1,7 @@
+export const HtmlTableCustomCss = `
+table tr.row-type--item td, 
+table tr.row-type--opening-entry td,
+table tr.row-type--closing-entry td{
+  font-weight: 500;
+}
+`;

packages/server-nest/src/modules/FinancialStatements/modules/InventoryValuationSheet/InventoryValuation.controller.ts

@@ -0,0 +1,67 @@
+import { Response } from 'express';
+import { ApiOperation, ApiResponse, ApiTags } from '@nestjs/swagger';
+import { Controller, Get, Headers, Query, Res } from '@nestjs/common';
+import { InventoryValuationSheetApplication } from './InventoryValuationSheetApplication';
+import { IInventoryValuationReportQuery } from './InventoryValuationSheet.types';
+import { AcceptType } from '@/constants/accept-type';
+import { PublicRoute } from '@/modules/Auth/Jwt.guard';
+
+@Controller('reports/inventory-valuation')
+@PublicRoute()
+@ApiTags('reports')
+export class InventoryValuationController {
+  constructor(
+    private readonly inventoryValuationApp: InventoryValuationSheetApplication,
+  ) {}
+
+  @Get()
+  @ApiOperation({ summary: 'Retrieves the inventory valuation sheet' })
+  @ApiResponse({
+    status: 200,
+    description: 'The inventory valuation sheet',
+  })
+  public async getInventoryValuationSheet(
+    @Query() query: IInventoryValuationReportQuery,
+    @Res() res: Response,
+    @Headers('accept') acceptHeader: string,
+  ) {
+    // Retrieves the json table format.
+    if (acceptHeader.includes(AcceptType.ApplicationJsonTable)) {
+      const table = await this.inventoryValuationApp.table(query);
+
+      return res.status(200).send(table);
+      // Retrieves the csv format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationCsv)) {
+      const buffer = await this.inventoryValuationApp.csv(query);
+
+      res.setHeader('Content-Disposition', 'attachment; filename=output.csv');
+      res.setHeader('Content-Type', 'text/csv');
+
+      return res.send(buffer);
+      // Retrieves the xslx buffer format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationXlsx)) {
+      const buffer = await this.inventoryValuationApp.xlsx(query);
+
+      res.setHeader('Content-Disposition', 'attachment; filename=output.xlsx');
+      res.setHeader(
+        'Content-Type',
+        'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+      );
+      return res.send(buffer);
+      // Retrieves the pdf format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationPdf)) {
+      const pdfContent = await this.inventoryValuationApp.pdf(query);
+
+      res.set({
+        'Content-Type': 'application/pdf',
+        'Content-Length': pdfContent.length,
+      });
+      return res.status(200).send(pdfContent);
+      // Retrieves the json format.
+    } else {
+      const sheet = await this.inventoryValuationApp.sheet(query);
+
+      return res.status(200).send(sheet);
+    }
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryValuationSheet/InventoryValuationSheet.module.ts

@@ -0,0 +1,20 @@
+import { Module } from '@nestjs/common';
+import { InventoryValuationSheetPdf } from './InventoryValuationSheetPdf';
+import { InventoryValuationSheetTableInjectable } from './InventoryValuationSheetTableInjectable';
+import { InventoryValuationMetaInjectable } from './InventoryValuationSheetMeta';
+import { InventoryValuationController } from './InventoryValuation.controller';
+import { InventoryValuationSheetService } from './InventoryValuationSheetService';
+import { InventoryValuationSheetApplication } from './InventoryValuationSheetApplication';
+
+@Module({
+  providers: [
+    InventoryValuationSheetPdf,
+    InventoryValuationSheetTableInjectable,
+    InventoryValuationMetaInjectable,
+    InventoryValuationSheetService,
+    InventoryValuationSheetApplication,
+  ],
+  controllers: [InventoryValuationController],
+  exports: [InventoryValuationSheetApplication],
+})
+export class InventoryValuationSheetModule {}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryValuationSheet/InventoryValuationSheet.ts

@@ -0,0 +1,265 @@
+import { sumBy, get, isEmpty } from 'lodash';
+import * as R from 'ramda';
+import {
+  IInventoryValuationReportQuery,
+  IInventoryValuationItem,
+  IInventoryValuationStatement,
+  IInventoryValuationTotal,
+} from './InventoryValuationSheet.types';
+import { ModelObject } from 'objection';
+import { Item } from '@/modules/Items/models/Item';
+import { InventoryCostLotTracker } from '@/modules/InventoryCost/models/InventoryCostLotTracker';
+import { FinancialSheet } from '../../common/FinancialSheet';
+import { transformToMap } from '@/utils/transform-to-key';
+
+export class InventoryValuationSheet extends FinancialSheet {
+  readonly query: IInventoryValuationReportQuery;
+  readonly items: ModelObject<Item>[];
+  readonly INInventoryCostLots: Map<number, InventoryCostLotTracker>;
+  readonly OUTInventoryCostLots: Map<number, InventoryCostLotTracker>;
+  readonly baseCurrency: string;
+
+  /**
+   * Constructor method.
+   * @param {IInventoryValuationReportQuery} query
+   * @param {ModelObject<Item>[]} items
+   * @param {Map<number, InventoryCostLotTracker[]>} INInventoryCostLots
+   * @param {Map<number, InventoryCostLotTracker[]>} OUTInventoryCostLots
+   * @param {string} baseCurrency
+   */
+  constructor(
+    query: IInventoryValuationReportQuery,
+    items: ModelObject<Item>[],
+    INInventoryCostLots: Map<number, InventoryCostLotTracker[]>,
+    OUTInventoryCostLots: Map<number, InventoryCostLotTracker[]>,
+    baseCurrency: string,
+  ) {
+    super();
+
+    this.query = query;
+    this.items = items;
+    this.INInventoryCostLots = transformToMap(INInventoryCostLots, 'itemId');
+    this.OUTInventoryCostLots = transformToMap(OUTInventoryCostLots, 'itemId');
+    this.baseCurrency = baseCurrency;
+    this.numberFormat = this.query.numberFormat;
+  }
+
+  /**
+   * Retrieve the item cost and quantity from the given transaction map.
+   * @param {Map<number, InventoryCostLotTracker[]>} transactionsMap
+   * @param {number} itemId
+   * @returns
+   */
+  private getItemTransaction(
+    transactionsMap: Map<number, InventoryCostLotTracker[]>,
+    itemId: number,
+  ): { cost: number; quantity: number } {
+    const meta = transactionsMap.get(itemId);
+
+    const cost = get(meta, 'cost', 0);
+    const quantity = get(meta, 'quantity', 0);
+
+    return { cost, quantity };
+  }
+
+  /**
+   * Retrieve the cost and quantity of the givne item from `IN` transactions.
+   * @param {number} itemId -
+   */
+  private getItemINTransaction(itemId: number): {
+    cost: number;
+    quantity: number;
+  } {
+    return this.getItemTransaction(this.INInventoryCostLots, itemId);
+  }
+
+  /**
+   * Retrieve the cost and quantity of the given item from `OUT` transactions.
+   * @param {number} itemId -
+   */
+  private getItemOUTTransaction(itemId: number): {
+    cost: number;
+    quantity: number;
+  } {
+    return this.getItemTransaction(this.OUTInventoryCostLots, itemId);
+  }
+
+  /**
+   * Retrieve the item closing valuation.
+   * @param {number} itemId - Item id.
+   */
+  private getItemValuation(itemId: number): number {
+    const { cost: INValuation } = this.getItemINTransaction(itemId);
+    const { cost: OUTValuation } = this.getItemOUTTransaction(itemId);
+
+    return Math.max(INValuation - OUTValuation, 0);
+  }
+
+  /**
+   * Retrieve the item closing quantity.
+   * @param {number} itemId - Item id.
+   */
+  private getItemQuantity(itemId: number): number {
+    const { quantity: INQuantity } = this.getItemINTransaction(itemId);
+    const { quantity: OUTQuantity } = this.getItemOUTTransaction(itemId);
+
+    return INQuantity - OUTQuantity;
+  }
+
+  /**
+   * Calculates the item weighted average cost from the given valuation and quantity.
+   * @param {number} valuation
+   * @param {number} quantity
+   * @returns {number}
+   */
+  private calcAverage(valuation: number, quantity: number): number {
+    return quantity ? valuation / quantity : 0;
+  }
+
+  /**
+   * Mapping the item model object to inventory valuation item
+   * @param {IItem} item
+   * @returns {IInventoryValuationItem}
+   */
+  private itemMapper(item: ModelObject<Item>): IInventoryValuationItem {
+    const valuation = this.getItemValuation(item.id);
+    const quantity = this.getItemQuantity(item.id);
+    const average = this.calcAverage(valuation, quantity);
+
+    return {
+      id: item.id,
+      name: item.name,
+      code: item.code,
+      valuation,
+      quantity,
+      average,
+      valuationFormatted: this.formatNumber(valuation),
+      quantityFormatted: this.formatNumber(quantity, { money: false }),
+      averageFormatted: this.formatNumber(average, { money: false }),
+      currencyCode: this.baseCurrency,
+    };
+  }
+
+  /**
+   * Filter none transactions items.
+   * @param {IInventoryValuationItem} valuationItem -
+   * @return {boolean}
+   */
+  private filterNoneTransactions = (
+    valuationItem: IInventoryValuationItem,
+  ): boolean => {
+    const transactionIN = this.INInventoryCostLots.get(valuationItem.id);
+    const transactionOUT = this.OUTInventoryCostLots.get(valuationItem.id);
+
+    return transactionOUT || transactionIN;
+  };
+
+  /**
+   * Filter active only items.
+   * @param {IInventoryValuationItem} valuationItem -
+   * @returns {boolean}
+   */
+  private filterActiveOnly = (
+    valuationItem: IInventoryValuationItem,
+  ): boolean => {
+    return (
+      valuationItem.average !== 0 ||
+      valuationItem.quantity !== 0 ||
+      valuationItem.valuation !== 0
+    );
+  };
+
+  /**
+   * Filter none-zero total valuation items.
+   * @param {IInventoryValuationItem} valuationItem
+   * @returns {boolean}
+   */
+  private filterNoneZero = (valuationItem: IInventoryValuationItem) => {
+    return valuationItem.valuation !== 0;
+  };
+
+  /**
+   * Filters the inventory valuation items based on query.
+   * @param {IInventoryValuationItem} valuationItem
+   * @returns {boolean}
+   */
+  private itemFilter = (valuationItem: IInventoryValuationItem): boolean => {
+    const { noneTransactions, noneZero, onlyActive } = this.query;
+
+    // Conditions pair filter detarminer.
+    const condsPairFilters = [
+      [noneTransactions, this.filterNoneTransactions],
+      [noneZero, this.filterNoneZero],
+      [onlyActive, this.filterActiveOnly],
+    ];
+    return allPassedConditionsPass(condsPairFilters)(valuationItem);
+  };
+
+  /**
+   * Mappes the items to inventory valuation items nodes.
+   * @param {IItem[]} items
+   * @returns {IInventoryValuationItem[]}
+   */
+  private itemsMapper = (items: IItem[]): IInventoryValuationItem[] => {
+    return this.items.map(this.itemMapper.bind(this));
+  };
+
+  /**
+   * Filters the inventory valuation items nodes.
+   * @param {IInventoryValuationItem[]} nodes -
+   * @returns {IInventoryValuationItem[]}
+   */
+  private itemsFilter = (
+    nodes: IInventoryValuationItem[],
+  ): IInventoryValuationItem[] => {
+    return nodes.filter(this.itemFilter);
+  };
+
+  /**
+   * Detarmines whether the items post filter is active.
+   */
+  private isItemsPostFilter = (): boolean => {
+    return isEmpty(this.query.itemsIds);
+  };
+
+  /**
+   * Retrieve the inventory valuation items.
+   * @returns {IInventoryValuationItem[]}
+   */
+  private itemsSection(): IInventoryValuationItem[] {
+    return R.compose(
+      R.when(this.isItemsPostFilter, this.itemsFilter),
+      this.itemsMapper,
+    )(this.items);
+  }
+
+  /**
+   * Retrieve the inventory valuation total.
+   * @param {IInventoryValuationItem[]} items
+   * @returns {IInventoryValuationTotal}
+   */
+  private totalSection(
+    items: IInventoryValuationItem[],
+  ): IInventoryValuationTotal {
+    const valuation = sumBy(items, (item) => item.valuation);
+    const quantity = sumBy(items, (item) => item.quantity);
+
+    return {
+      valuation,
+      quantity,
+      valuationFormatted: this.formatTotalNumber(valuation),
+      quantityFormatted: this.formatTotalNumber(quantity, { money: false }),
+    };
+  }
+
+  /**
+   * Retrieve the inventory valuation report data.
+   * @returns {IInventoryValuationStatement}
+   */
+  public reportData(): IInventoryValuationStatement {
+    const items = this.itemsSection();
+    const total = this.totalSection(items);
+
+    return { items, total };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryValuationSheet/InventoryValuationSheet.types.ts

@@ -0,0 +1,61 @@
+import {
+  IFinancialSheetCommonMeta,
+  INumberFormatQuery,
+} from '../../types/Report.types';
+import { IFinancialTable } from '../../types/Table.types';
+
+export interface IInventoryValuationReportQuery {
+  asDate: Date | string;
+  numberFormat: INumberFormatQuery;
+  noneTransactions: boolean;
+  noneZero: boolean;
+  onlyActive: boolean;
+  itemsIds: number[];
+
+  warehousesIds?: number[];
+  branchesIds?: number[];
+}
+
+export interface IInventoryValuationSheetMeta
+  extends IFinancialSheetCommonMeta {
+  formattedAsDate: string;
+  formattedDateRange: string;
+}
+
+export interface IInventoryValuationItem {
+  id: number;
+  name: string;
+  code: string;
+  valuation: number;
+  quantity: number;
+  average: number;
+  valuationFormatted: string;
+  quantityFormatted: string;
+  averageFormatted: string;
+  currencyCode: string;
+}
+
+export interface IInventoryValuationTotal {
+  valuation: number;
+  quantity: number;
+
+  valuationFormatted: string;
+  quantityFormatted: string;
+}
+
+export type IInventoryValuationStatement = {
+  items: IInventoryValuationItem[];
+  total: IInventoryValuationTotal;
+};
+export type IInventoryValuationSheetData = IInventoryValuationStatement;
+
+export interface IInventoryValuationSheet {
+  data: IInventoryValuationStatement;
+  meta: IInventoryValuationSheetMeta;
+  query: IInventoryValuationReportQuery;
+}
+
+export interface IInventoryValuationTable extends IFinancialTable {
+  meta: IInventoryValuationSheetMeta;
+  query: IInventoryValuationReportQuery;
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryValuationSheet/InventoryValuationSheetApplication.ts

@@ -0,0 +1,73 @@
+import {
+  IInventoryValuationReportQuery,
+  IInventoryValuationSheet,
+  IInventoryValuationTable,
+} from './InventoryValuationSheet.types';
+import { InventoryValuationSheetService } from './InventoryValuationSheetService';
+import { InventoryValuationSheetTableInjectable } from './InventoryValuationSheetTableInjectable';
+import { InventoryValuationSheetExportable } from './InventoryValuationSheetExportable';
+import { InventoryValuationSheetPdf } from './InventoryValuationSheetPdf';
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class InventoryValuationSheetApplication {
+  constructor(
+    private readonly inventoryValuationSheet: InventoryValuationSheetService,
+    private readonly inventoryValuationTable: InventoryValuationSheetTableInjectable,
+    private readonly inventoryValuationExport: InventoryValuationSheetExportable,
+    private readonly inventoryValuationPdf: InventoryValuationSheetPdf,
+  ) {}
+
+  /**
+   * Retrieves the inventory valuation json format.
+   * @param {IInventoryValuationReportQuery} query
+   * @returns
+   */
+  public sheet(
+    query: IInventoryValuationReportQuery,
+  ): Promise<IInventoryValuationSheet> {
+    return this.inventoryValuationSheet.inventoryValuationSheet(query);
+  }
+
+  /**
+   * Retrieves the inventory valuation json table format.
+   * @param {number} tenantId
+   * @param {IInventoryValuationReportQuery} query
+   * @returns {Promise<IInventoryValuationTable>}
+   */
+  public table(
+    query: IInventoryValuationReportQuery,
+  ): Promise<IInventoryValuationTable> {
+    return this.inventoryValuationTable.table(query);
+  }
+
+  /**
+   * Retrieves the inventory valuation xlsx format.
+   * @param {number} tenantId
+   * @param {IInventoryValuationReportQuery} query
+   * @returns
+   */
+  public xlsx(query: IInventoryValuationReportQuery): Promise<Buffer> {
+    return this.inventoryValuationExport.xlsx(query);
+  }
+
+  /**
+   * Retrieves the inventory valuation csv format.
+   * @param {number} tenantId
+   * @param {IInventoryValuationReportQuery} query
+   * @returns
+   */
+  public csv(query: IInventoryValuationReportQuery): Promise<string> {
+    return this.inventoryValuationExport.csv(query);
+  }
+
+  /**
+   * Retrieves the inventory valuation pdf format.
+   * @param {number} tenantId
+   * @param {IInventoryValuationReportQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public pdf(query: IInventoryValuationReportQuery): Promise<Buffer> {
+    return this.inventoryValuationPdf.pdf(query);
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryValuationSheet/InventoryValuationSheetExportable.ts

@@ -0,0 +1,39 @@
+import { TableSheet } from '../../common/TableSheet';
+import { IInventoryValuationReportQuery } from './InventoryValuationSheet.types';
+import { InventoryValuationSheetTableInjectable } from './InventoryValuationSheetTableInjectable';
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class InventoryValuationSheetExportable {
+  constructor(
+    private readonly inventoryValuationTable: InventoryValuationSheetTableInjectable,
+  ) {}
+
+  /**
+   * Retrieves the trial balance sheet in XLSX format.
+   * @param {IInventoryValuationReportQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public async xlsx(query: IInventoryValuationReportQuery): Promise<Buffer> {
+    const table = await this.inventoryValuationTable.table(query);
+
+    const tableSheet = new TableSheet(table.table);
+    const tableCsv = tableSheet.convertToXLSX();
+
+    return tableSheet.convertToBuffer(tableCsv, 'xlsx');
+  }
+
+  /**
+   * Retrieves the trial balance sheet in CSV format.
+   * @param {IInventoryValuationReportQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public async csv(query: IInventoryValuationReportQuery): Promise<string> {
+    const table = await this.inventoryValuationTable.table(query);
+
+    const tableSheet = new TableSheet(table.table);
+    const tableCsv = tableSheet.convertToCSV();
+
+    return tableCsv;
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryValuationSheet/InventoryValuationSheetMeta.ts

@@ -0,0 +1,31 @@
+import * as moment from 'moment';
+import { FinancialSheetMeta } from '../../common/FinancialSheetMeta';
+import {
+  IInventoryValuationSheetMeta,
+  IInventoryValuationReportQuery,
+} from './InventoryValuationSheet.types';
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class InventoryValuationMetaInjectable {
+  constructor(private readonly financialSheetMeta: FinancialSheetMeta) {}
+
+  /**
+   * Retrieve the balance sheet meta.
+   * @returns {Promise<IInventoryValuationSheetMeta>}
+   */
+  public async meta(
+    query: IInventoryValuationReportQuery,
+  ): Promise<IInventoryValuationSheetMeta> {
+    const commonMeta = await this.financialSheetMeta.meta();
+    const formattedAsDate = moment(query.asDate).format('YYYY/MM/DD');
+    const formattedDateRange = `As ${formattedAsDate}`;
+
+    return {
+      ...commonMeta,
+      sheetName: 'Inventory Valuation Sheet',
+      formattedAsDate,
+      formattedDateRange,
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryValuationSheet/InventoryValuationSheetPdf.ts

@@ -0,0 +1,30 @@
+import { Injectable } from '@nestjs/common';
+import { TableSheetPdf } from '../../common/TableSheetPdf';
+import { IInventoryValuationReportQuery } from './InventoryValuationSheet.types';
+import { InventoryValuationSheetTableInjectable } from './InventoryValuationSheetTableInjectable';
+import { HtmlTableCustomCss } from './_constants';
+
+@Injectable()
+export class InventoryValuationSheetPdf {
+  constructor(
+    private readonly inventoryValuationTable: InventoryValuationSheetTableInjectable,
+    private readonly tableSheetPdf: TableSheetPdf,
+  ) {}
+
+  /**
+   * Converts the given balance sheet table to pdf.
+   * @param {number} tenantId - Tenant ID.
+   * @param {IBalanceSheetQuery} query - Balance sheet query.
+   * @returns {Promise<Buffer>}
+   */
+  public async pdf(query: IInventoryValuationReportQuery): Promise<Buffer> {
+    const table = await this.inventoryValuationTable.table(query);
+
+    return this.tableSheetPdf.convertToPdf(
+      table.table,
+      table.meta.sheetName,
+      table.meta.formattedDateRange,
+      HtmlTableCustomCss,
+    );
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryValuationSheet/InventoryValuationSheetRepository.ts

@@ -0,0 +1,43 @@
+import { Injectable } from '@nestjs/common';
+
+
+@Injectable()
+export class InventoryValuationSheetRepository {
+  asyncInit() {
+    const inventoryItems = await Item.query().onBuild((q) => {
+      q.where('type', 'inventory');
+
+      if (filter.itemsIds.length > 0) {
+        q.whereIn('id', filter.itemsIds);
+      }
+    });
+    const inventoryItemsIds = inventoryItems.map((item) => item.id);
+
+    const commonQuery = (builder) => {
+      builder.whereIn('item_id', inventoryItemsIds);
+      builder.sum('rate as rate');
+      builder.sum('quantity as quantity');
+      builder.sum('cost as cost');
+      builder.select('itemId');
+      builder.groupBy('itemId');
+
+      if (!isEmpty(query.branchesIds)) {
+        builder.modify('filterByBranches', query.branchesIds);
+      }
+      if (!isEmpty(query.warehousesIds)) {
+        builder.modify('filterByWarehouses', query.warehousesIds);
+      }
+    };
+    // Retrieve the inventory cost `IN` transactions.
+    const INTransactions = await InventoryCostLotTracker.query()
+      .onBuild(commonQuery)
+      .where('direction', 'IN');
+
+    // Retrieve the inventory cost `OUT` transactions.
+    const OUTTransactions = await InventoryCostLotTracker.query()
+      .onBuild(commonQuery)
+      .where('direction', 'OUT');
+
+    
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryValuationSheet/InventoryValuationSheetService.ts

@@ -0,0 +1,65 @@
+import { Injectable, Inject } from '@nestjs/common';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { events } from '@/common/events/events';
+import {
+  IInventoryValuationReportQuery,
+  IInventoryValuationSheet,
+} from './InventoryValuationSheet.types';
+import { InventoryValuationMetaInjectable } from './InventoryValuationSheetMeta';
+import { getInventoryValuationDefaultQuery } from './_constants';
+import { InventoryCostLotTracker } from '@/modules/InventoryCost/models/InventoryCostLotTracker';
+import { Item } from '@/modules/Items/models/Item';
+
+@Injectable()
+export class InventoryValuationSheetService {
+  constructor(
+    private readonly inventoryService: InventoryService,
+    private readonly inventoryValuationMeta: InventoryValuationMetaInjectable,
+    private readonly eventPublisher: EventEmitter2,
+
+    @Inject(Item.name)
+    private readonly itemModel: typeof Item,
+
+    @Inject(InventoryCostLotTracker.name)
+    private readonly inventoryCostLotTracker: typeof InventoryCostLotTracker,
+  ) {}
+
+  /**
+   * Inventory valuation sheet.
+   * @param {IInventoryValuationReportQuery} query - Valuation query.
+   */
+  public async inventoryValuationSheet(
+    query: IInventoryValuationReportQuery,
+  ): Promise<IInventoryValuationSheet> {
+    const filter = {
+      ...getInventoryValuationDefaultQuery(),
+      ...query,
+    };
+    const inventoryValuationInstance = new InventoryValuationSheet(
+      filter,
+      inventoryItems,
+      INTransactions,
+      OUTTransactions,
+      tenant.metadata.baseCurrency,
+    );
+    // Retrieve the inventory valuation report data.
+    const inventoryValuationData = inventoryValuationInstance.reportData();
+
+    // Retrieves the inventorty valuation meta.
+    const meta = await this.inventoryValuationMeta.meta(filter);
+
+    // Triggers `onInventoryValuationViewed` event.
+    await this.eventPublisher.emitAsync(
+      events.reports.onInventoryValuationViewed,
+      {
+        query,
+      },
+    );
+
+    return {
+      data: inventoryValuationData,
+      query: filter,
+      meta,
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryValuationSheet/InventoryValuationSheetTable.ts

@@ -0,0 +1,107 @@
+import * as R from 'ramda';
+import {
+  IInventoryValuationItem,
+  IInventoryValuationSheetData,
+  IInventoryValuationTotal,
+} from './InventoryValuationSheet.types';
+import { ROW_TYPE } from './_constants';
+import { FinancialTable } from '../../common/FinancialTable';
+import { FinancialSheetStructure } from '../../common/FinancialSheetStructure';
+import { FinancialSheet } from '../../common/FinancialSheet';
+import {
+  ITableColumn,
+  ITableColumnAccessor,
+  ITableRow,
+} from '../../types/Table.types';
+import { tableRowMapper } from '../../utils/Table.utils';
+
+export class InventoryValuationSheetTable extends R.pipe(
+  FinancialTable,
+  FinancialSheetStructure,
+)(FinancialSheet) {
+  private readonly data: IInventoryValuationSheetData;
+
+  /**
+   * Constructor method.
+   * @param {IInventoryValuationSheetData} data
+   */
+  constructor(data: IInventoryValuationSheetData) {
+    super();
+    this.data = data;
+  }
+
+  /**
+   * Retrieves the common columns accessors.
+   * @returns {ITableColumnAccessor}
+   */
+  private commonColumnsAccessors(): ITableColumnAccessor[] {
+    return [
+      { key: 'item_name', accessor: 'name' },
+      { key: 'quantity', accessor: 'quantityFormatted' },
+      { key: 'valuation', accessor: 'valuationFormatted' },
+      { key: 'average', accessor: 'averageFormatted' },
+    ];
+  }
+
+  /**
+   * Maps the given total node to table row.
+   * @param {IInventoryValuationTotal} total
+   * @returns {ITableRow}
+   */
+  private totalRowMapper = (total: IInventoryValuationTotal): ITableRow => {
+    const accessors = this.commonColumnsAccessors();
+    const meta = {
+      rowTypes: [ROW_TYPE.TOTAL],
+    };
+    return tableRowMapper(total, accessors, meta);
+  };
+
+  /**
+   * Maps the given item node to table row.
+   * @param {IInventoryValuationItem} item
+   * @returns {ITableRow}
+   */
+  private itemRowMapper = (item: IInventoryValuationItem): ITableRow => {
+    const accessors = this.commonColumnsAccessors();
+    const meta = {
+      rowTypes: [ROW_TYPE.ITEM],
+    };
+    return tableRowMapper(item, accessors, meta);
+  };
+
+  /**
+   * Maps the given items nodes to table rowes.
+   * @param {IInventoryValuationItem[]} items
+   * @returns {ITableRow[]}
+   */
+  private itemsRowsMapper = (items: IInventoryValuationItem[]): ITableRow[] => {
+    return R.map(this.itemRowMapper)(items);
+  };
+
+  /**
+   * Retrieves the table rows.
+   * @returns {ITableRow[]}
+   */
+  public tableRows(): ITableRow[] {
+    const itemsRows = this.itemsRowsMapper(this.data.items);
+    const totalRow = this.totalRowMapper(this.data.total);
+
+    return R.compose(
+      R.when(R.always(R.not(R.isEmpty(itemsRows))), R.append(totalRow)),
+    )([...itemsRows]) as ITableRow[];
+  }
+
+  /**
+   * Retrieves the table columns.
+   * @returns {ITableColumn[]}
+   */
+  public tableColumns(): ITableColumn[] {
+    const columns = [
+      { key: 'item_name', label: 'Item Name' },
+      { key: 'quantity', label: 'Quantity' },
+      { key: 'valuation', label: 'Valuation' },
+      { key: 'average', label: 'Average' },
+    ];
+    return R.compose(this.tableColumnsCellIndexing)(columns);
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryValuationSheet/InventoryValuationSheetTableInjectable.ts

@@ -0,0 +1,34 @@
+import { InventoryValuationSheetService } from './InventoryValuationSheetService';
+import {
+  IInventoryValuationReportQuery,
+  IInventoryValuationTable,
+} from './InventoryValuationSheet.types';
+import { InventoryValuationSheetTable } from './InventoryValuationSheetTable';
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class InventoryValuationSheetTableInjectable {
+  constructor(private readonly sheet: InventoryValuationSheetService) {}
+
+  /**
+   * Retrieves the inventory valuation json table format.
+   * @param {IInventoryValuationReportQuery} filter -
+   * @returns {Promise<IInventoryValuationTable>}
+   */
+  public async table(
+    filter: IInventoryValuationReportQuery,
+  ): Promise<IInventoryValuationTable> {
+    const { data, query, meta } =
+      await this.sheet.inventoryValuationSheet(filter);
+    const table = new InventoryValuationSheetTable(data);
+
+    return {
+      table: {
+        columns: table.tableColumns(),
+        rows: table.tableRows(),
+      },
+      query,
+      meta,
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/InventoryValuationSheet/_constants.ts

@@ -0,0 +1,32 @@
+export enum ROW_TYPE {
+  ITEM = 'ITEM',
+  TOTAL = 'TOTAL',
+}
+
+export const HtmlTableCustomCss = `
+table tr.row-type--total td {
+  border-top: 1px solid #bbb;
+  font-weight: 600;
+  border-bottom: 3px double #000;
+}
+`;
+
+export const getInventoryValuationDefaultQuery = () => {
+  return {
+    asDate: moment().format('YYYY-MM-DD'),
+    itemsIds: [],
+    numberFormat: {
+      precision: 2,
+      divideOn1000: false,
+      showZero: false,
+      formatMoney: 'always',
+      negativeFormat: 'mines',
+    },
+    noneTransactions: true,
+    noneZero: false,
+    onlyActive: false,
+
+    warehousesIds: [],
+    branchesIds: [],
+  };
+};

packages/server-nest/src/modules/FinancialStatements/modules/SalesByItems/SalesByItemsTable.ts

@@ -11,9 +11,9 @@ import { FinancialSheet } from '../../common/FinancialSheet';
 import { ITableColumn, ITableRow } from '../../types/Table.types';
 import { tableRowMapper } from '../../utils/Table.utils';
 
-export class SalesByItemsTable extends R.compose(
+export class SalesByItemsTable extends R.pipe(
   FinancialTable,
-  FinancialSheetStructure
+  FinancialSheetStructure,
 )(FinancialSheet) {
   private readonly data: ISalesByItemsSheetData;
 

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByContact/TransactionsByContact.ts

@@ -33,7 +33,10 @@ export class TransactionsByContact extends FinancialSheet {
       accountName: account.name,
       currencyCode: this.baseCurrency,
       transactionNumber: entry.transactionNumber,
-      transactionType: this.i18n.t(entry.referenceTypeFormatted),
+
+      // @ts-ignore
+      // transactionType: this.i18n.t(entry.referenceTypeFormatted),
+      transactionType: '',
       date: entry.date,
       createdAt: entry.createdAt,
     };

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByContact/TransactionsByContactRepository.ts

@@ -13,15 +13,15 @@ export class TransactionsByContactRepository {
    */
   public accountsGraph: any;
 
-  /**
-   * Report data.
-   * @param {Ledger} ledger
-   */
-  public ledger: Ledger;
-
   /**
    * Opening balance entries.
    * @param {ILedgerEntry[]} openingBalanceEntries
    */
   public openingBalanceEntries: ILedgerEntry[];
+
+  /**
+   * Ledger.
+   * @param {Ledger} ledger
+   */
+  public ledger: Ledger;
 }

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByCustomer/TransactionsByCustomer.controller.ts

@@ -0,0 +1,61 @@
+import { Controller, Get, Headers, Query, Res } from '@nestjs/common';
+import { ApiOperation, ApiResponse } from '@nestjs/swagger';
+import { ITransactionsByCustomersFilter } from './TransactionsByCustomer.types';
+import { TransactionsByCustomerApplication } from './TransactionsByCustomersApplication';
+import { AcceptType } from '@/constants/accept-type';
+import { Response } from 'express';
+import { PublicRoute } from '@/modules/Auth/Jwt.guard';
+
+@Controller('/reports/transactions-by-customers')
+@PublicRoute()
+export class TransactionsByCustomerController {
+  constructor(
+    private readonly transactionsByCustomersApp: TransactionsByCustomerApplication,
+  ) {}
+
+  @Get()
+  @ApiOperation({ summary: 'Get transactions by customer' })
+  @ApiResponse({ status: 200, description: 'Transactions by customer' })
+  async transactionsByCustomer(
+    @Query() filter: ITransactionsByCustomersFilter,
+    @Res() res: Response,
+    @Headers('accept') acceptHeader: string,
+  ) {
+    // Retrieves the json table format.
+    if (acceptHeader.includes(AcceptType.ApplicationJsonTable)) {
+      const table = await this.transactionsByCustomersApp.table(filter);
+      return res.status(200).send(table);
+
+      // Retrieve the csv format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationCsv)) {
+      const csv = await this.transactionsByCustomersApp.csv(filter);
+
+      res.setHeader('Content-Disposition', 'attachment; filename=output.csv');
+      res.setHeader('Content-Type', 'text/csv');
+
+      return res.send(csv);
+
+      // Retrieve the xlsx format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationXlsx)) {
+      const buffer = await this.transactionsByCustomersApp.xlsx(filter);
+      res.setHeader('Content-Disposition', 'attachment; filename=output.xlsx');
+      res.setHeader(
+        'Content-Type',
+        'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+      );
+      return res.send(buffer);
+
+      // Retrieve the json format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationPdf)) {
+      const pdfContent = await this.transactionsByCustomersApp.pdf(filter);
+      res.set({
+        'Content-Type': 'application/pdf',
+        'Content-Length': pdfContent.length,
+      });
+      return res.send(pdfContent);
+    } else {
+      const sheet = await this.transactionsByCustomersApp.sheet(filter);
+      return res.status(200).send(sheet);
+    }
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByCustomer/TransactionsByCustomer.module.ts

@@ -8,18 +8,21 @@ import { TransactionsByCustomersMeta } from './TransactionsByCustomersMeta';
 import { TenancyContext } from '@/modules/Tenancy/TenancyContext.service';
 import { FinancialSheetCommonModule } from '../../common/FinancialSheetCommon.module';
 import { AccountsModule } from '@/modules/Accounts/Accounts.module';
+import { TransactionsByCustomerController } from './TransactionsByCustomer.controller';
+import { TransactionsByCustomerApplication } from './TransactionsByCustomersApplication';
 
 @Module({
   imports: [FinancialSheetCommonModule, AccountsModule],
   providers: [
+    TransactionsByCustomerApplication,
     TransactionsByCustomersRepository,
     TransactionsByCustomersTableInjectable,
     TransactionsByCustomersExportInjectable,
     TransactionsByCustomersSheet,
     TransactionsByCustomersPdf,
     TransactionsByCustomersMeta,
-    TenancyContext
+    TenancyContext,
   ],
-  controllers: [],
+  controllers: [TransactionsByCustomerController],
 })
 export class TransactionsByCustomerModule {}

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByCustomer/TransactionsByCustomersMeta.ts

@@ -1,4 +1,4 @@
-import moment from 'moment';
+import * as moment from 'moment';
 import { Injectable } from '@nestjs/common';
 import { FinancialSheetMeta } from '../../common/FinancialSheetMeta';
 import {

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByCustomer/TransactionsByCustomersRepository.ts

@@ -1,3 +1,5 @@
+import { ModelObject } from 'objection';
+import * as moment from 'moment';
 import * as R from 'ramda';
 import { ACCOUNT_TYPE } from '@/constants/accounts';
 import { Account } from '@/modules/Accounts/models/Account.model';
@@ -9,9 +11,9 @@ import { isEmpty, map } from 'lodash';
 import { AccountRepository } from '@/modules/Accounts/repositories/Account.repository';
 import { Ledger } from '@/modules/Ledger/Ledger';
 import { ITransactionsByCustomersFilter } from './TransactionsByCustomer.types';
-import { ModelObject } from 'objection';
 import { TenancyContext } from '@/modules/Tenancy/TenancyContext.service';
 import { TransactionsByContactRepository } from '../TransactionsByContact/TransactionsByContactRepository';
+import { DateInput } from '@/common/types/Date';
 
 @Injectable({ scope: Scope.TRANSIENT })
 export class TransactionsByCustomersRepository extends TransactionsByContactRepository {
@@ -50,11 +52,8 @@ export class TransactionsByCustomersRepository extends TransactionsByContactRepo
 
   /**
    * Initialize the report data.
-   * @param {ITransactionsByCustomersFilter} filter
    */
-  public async asyncInit(filter: ITransactionsByCustomersFilter) {
-    this.filter = filter;
-
+  public async asyncInit() {
     await this.initAccountsGraph();
     await this.initCustomers();
     await this.initOpeningBalanceEntries();
@@ -63,6 +62,14 @@ export class TransactionsByCustomersRepository extends TransactionsByContactRepo
     await this.initBaseCurrency();
   }
 
+  /**
+   * Set the filter.
+   * @param {ITransactionsByCustomersFilter} filter
+   */
+  public setFilter(filter: ITransactionsByCustomersFilter) {
+    this.filter = filter;
+  }
+
   /**
    * Initialize the accounts graph.
    */
@@ -119,6 +126,9 @@ export class TransactionsByCustomersRepository extends TransactionsByContactRepo
     this.ledger = new Ledger(journalTransactions);
   }
 
+  /**
+   * Initialize the base currency.
+   */
   async initBaseCurrency() {
     const tenantMetadata = await this.tenancyContext.getTenantMetadata();
     this.baseCurrency = tenantMetadata.baseCurrency;
@@ -140,6 +150,7 @@ export class TransactionsByCustomersRepository extends TransactionsByContactRepo
         openingDate,
         customersIds,
       );
+    // @ts-ignore
     return R.compose(
       R.map(R.assoc('date', openingDate)),
       R.map(R.assoc('accountNormal', 'debit')),
@@ -154,25 +165,29 @@ export class TransactionsByCustomersRepository extends TransactionsByContactRepo
    * @returns {Promise<ILedgerEntry[]>}
    */
   private async getCustomersPeriodsEntries(
-    fromDate: Date | string,
-    toDate: Date | string,
+    fromDate: DateInput,
+    toDate: DateInput,
   ): Promise<ILedgerEntry[]> {
     const transactions =
       await this.getCustomersPeriodTransactions(
         fromDate,
         toDate,
       );
-    return R.compose(
+
+    // @ts-ignore
+    return R.pipe(
       R.map(R.assoc('accountNormal', 'debit')),
       R.map((trans) => ({
         ...trans,
-        referenceTypeFormatted: trans.referenceTypeFormatted,
+        // @ts-ignore
+        referenceTypeFormatted: '',
+        // referenceTypeFormatted: trans.referenceTypeFormatted,
       })),
     )(transactions);
   }
 
   /**
-   * Retrieve the report customers.
+   * Retrieves the report customers.
    * @param {number[]} customersIds - Customers ids.
    * @returns {Promise<ICustomer[]>}
    */
@@ -187,7 +202,7 @@ export class TransactionsByCustomersRepository extends TransactionsByContactRepo
   }
 
   /**
-   * Retrieve the accounts receivable.
+   * Retrieves the accounts receivable.
    * @returns {Promise<IAccount[]>}
    */
   public async getReceivableAccounts(): Promise<Account[]> {
@@ -204,7 +219,7 @@ export class TransactionsByCustomersRepository extends TransactionsByContactRepo
    * @returns {Promise<IAccountTransaction[]>}
    */
   public async getCustomersOpeningBalanceTransactions(
-    openingDate: Date,
+    openingDate: DateInput,
     customersIds?: number[],
   ): Promise<AccountTransaction[]> {
     const receivableAccounts = await this.getReceivableAccounts();
@@ -222,14 +237,14 @@ export class TransactionsByCustomersRepository extends TransactionsByContactRepo
   }
 
   /**
-   * Retrieve the customers periods transactions.
-   * @param {Date} fromDate - From date.
-   * @param {Date} toDate - To date.
+   * Retrieves the customers periods transactions.
+   * @param {DateInput} fromDate - From date.
+   * @param {DateInput} toDate - To date.
    * @return {Promise<IAccountTransaction[]>}
    */
   public async getCustomersPeriodTransactions(
-    fromDate: Date,
-    toDate: Date,
+    fromDate: DateInput,
+    toDate: DateInput,
   ): Promise<AccountTransaction[]> {
     const receivableAccounts = await this.getReceivableAccounts();
     const receivableAccountsIds = map(receivableAccounts, 'id');

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByCustomer/TransactionsByCustomersService.ts

@@ -1,3 +1,6 @@
+import { I18nService } from 'nestjs-i18n';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { Injectable } from '@nestjs/common';
 import {
   ITransactionsByCustomersFilter,
   ITransactionsByCustomersStatement,
@@ -5,11 +8,8 @@ import {
 import { TransactionsByCustomersRepository } from './TransactionsByCustomersRepository';
 import { TransactionsByCustomersMeta } from './TransactionsByCustomersMeta';
 import { getTransactionsByCustomerDefaultQuery } from './utils';
-import { EventEmitter2 } from '@nestjs/event-emitter';
 import { TransactionsByCustomers } from './TransactionsByCustomers';
 import { events } from '@/common/events/events';
-import { TenancyContext } from '@/modules/Tenancy/TenancyContext.service';
-import { Injectable } from '@nestjs/common';
 
 @Injectable()
 export class TransactionsByCustomersSheet {
@@ -17,7 +17,7 @@ export class TransactionsByCustomersSheet {
     private readonly transactionsByCustomersMeta: TransactionsByCustomersMeta,
     private readonly transactionsByCustomersRepository: TransactionsByCustomersRepository,
     private readonly eventPublisher: EventEmitter2,
-    private readonly tenancyContext: TenancyContext,
+    private readonly i18n: I18nService,
   ) {}
 
   /**
@@ -29,13 +29,12 @@ export class TransactionsByCustomersSheet {
   public async transactionsByCustomers(
     query: ITransactionsByCustomersFilter,
   ): Promise<ITransactionsByCustomersStatement> {
-    const tenantMetadata = await this.tenancyContext.getTenantMetadata();
-
     const filter = {
       ...getTransactionsByCustomerDefaultQuery(),
       ...query,
     };
-    await this.transactionsByCustomersRepository.asyncInit(filter);
+    this.transactionsByCustomersRepository.setFilter(filter);
+    await this.transactionsByCustomersRepository.asyncInit();
 
     // Transactions by customers data mapper.
     const reportInstance = new TransactionsByCustomers(
@@ -43,15 +42,12 @@ export class TransactionsByCustomersSheet {
       this.transactionsByCustomersRepository,
       this.i18n,
     );
-
     const meta = await this.transactionsByCustomersMeta.meta(filter);
 
     // Triggers `onCustomerTransactionsViewed` event.
     await this.eventPublisher.emitAsync(
       events.reports.onCustomerTransactionsViewed,
-      {
-        query,
-      },
+      { query },
     );
 
     return {

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByCustomer/TransactionsByCustomersTable.ts

@@ -1,4 +1,5 @@
 import * as R from 'ramda';
+import { I18nService } from 'nestjs-i18n';
 import { ITransactionsByCustomersCustomer } from './TransactionsByCustomer.types';
 import { ITableRow, ITableColumn } from '../../types/Table.types';
 import { TransactionsByContactsTableRows } from '../TransactionsByContact/TransactionsByContactTableRows';
@@ -18,7 +19,10 @@ export class TransactionsByCustomersTable extends TransactionsByContactsTableRow
    * Constructor method.
    * @param {ITransactionsByCustomersCustomer[]} customersTransactions - Customers transactions.
    */
-  constructor(customersTransactions: ITransactionsByCustomersCustomer[], i18n) {
+  constructor(
+    customersTransactions: ITransactionsByCustomersCustomer[],
+    i18n: I18nService,
+  ) {
     super();
     this.customersTransactions = customersTransactions;
     this.i18n = i18n;
@@ -29,7 +33,9 @@ export class TransactionsByCustomersTable extends TransactionsByContactsTableRow
    * @param {ITransactionsByCustomersCustomer} customer -
    * @returns {ITableRow[]}
    */
-  private customerDetails = (customer: ITransactionsByCustomersCustomer) => {
+  private customerDetails = (
+    customer: ITransactionsByCustomersCustomer,
+  ): ITableRow => {
     const columns = [
       { key: 'customerName', accessor: 'customerName' },
       ...R.repeat({ key: 'empty', value: '' }, 5),
@@ -56,22 +62,22 @@ export class TransactionsByCustomersTable extends TransactionsByContactsTableRow
 
   /**
    * Retrieve the table rows of the customer section.
-   * @param {ITransactionsByCustomersCustomer} customer
-   * @returns {ITableRow[]}
+   * @param {ITransactionsByCustomersCustomer} customer - Customer object.
+   * @returns {ITableRow[]} - Table rows.
    */
-  private customerRowsMapper = (customer: ITransactionsByCustomersCustomer) => {
+  private customerRowsMapper = (
+    customer: ITransactionsByCustomersCustomer,
+  ): ITableRow => {
     return R.pipe(this.customerDetails)(customer);
   };
 
   /**
    * Retrieve the table rows of transactions by customers report.
-   * @param {ITransactionsByCustomersCustomer[]} customers
-   * @returns {ITableRow[]}
+   * @param {ITransactionsByCustomersCustomer[]} customers - Customer objects.
+   * @returns {ITableRow[]} - Table rows.
    */
   public tableRows = (): ITableRow[] => {
-    return R.map(this.customerRowsMapper.bind(this))(
-      this.customersTransactions,
-    );
+    return R.map(this.customerRowsMapper)(this.customersTransactions);
   };
 
   /**

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByCustomer/TransactionsByCustomersTableInjectable.ts

@@ -1,11 +1,11 @@
+import { Injectable } from '@nestjs/common';
+import { I18nService } from 'nestjs-i18n';
 import {
   ITransactionsByCustomersFilter,
   ITransactionsByCustomersTable,
 } from './TransactionsByCustomer.types';
 import { TransactionsByCustomersSheet } from './TransactionsByCustomersService';
 import { TransactionsByCustomersTable } from './TransactionsByCustomersTable';
-import { Injectable } from '@nestjs/common';
-import { I18nService } from 'nestjs-i18n';
 
 @Injectable()
 export class TransactionsByCustomersTableInjectable {
@@ -16,9 +16,8 @@ export class TransactionsByCustomersTableInjectable {
 
   /**
    * Retrieves the transactions by customers sheet in table format.
-   * @param {number} tenantId
-   * @param {ITransactionsByCustomersFilter} filter
-   * @returns {Promise<ITransactionsByCustomersFilter>}
+   * @param {ITransactionsByCustomersFilter} filter - Filter object.
+   * @returns {Promise<ITransactionsByCustomersFilter>} - Transactions by customers table.
    */
   public async table(
     filter: ITransactionsByCustomersFilter,

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByCustomer/utils.ts

@@ -1,5 +1,4 @@
-
-
+import * as moment from 'moment';
 
 export const getTransactionsByCustomerDefaultQuery = () => {
   return {

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByReference/TransactionByReference.module.ts

@@ -3,12 +3,14 @@ import { TransactionsByReferenceApplication } from './TransactionsByReferenceApp
 import { TransactionsByReferenceRepository } from './TransactionsByReferenceRepository';
 import { TransactionsByReferenceService } from './TransactionsByReference.service';
 import { TransactionsByReferenceController } from './TransactionsByReference.controller';
+import { TenancyContext } from '@/modules/Tenancy/TenancyContext.service';
 
 @Module({
   providers: [
     TransactionsByReferenceRepository,
     TransactionsByReferenceApplication,
     TransactionsByReferenceService,
+    TenancyContext
   ],
   controllers: [TransactionsByReferenceController],
 })

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByReference/TransactionsByReference.controller.ts

@@ -1,8 +1,10 @@
 import { Controller, Get, Query } from '@nestjs/common';
 import { TransactionsByReferenceApplication } from './TransactionsByReferenceApplication';
 import { ITransactionsByReferenceQuery } from './TransactionsByReference.types';
+import { PublicRoute } from '@/modules/Auth/Jwt.guard';
 
 @Controller('reports/transactions-by-reference')
+@PublicRoute()
 export class TransactionsByReferenceController {
   constructor(
     private readonly transactionsByReferenceApp: TransactionsByReferenceApplication,

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByReference/TransactionsByReference.types.ts

@@ -9,7 +9,14 @@ export interface ITransactionsByReferenceAmount {
   currencyCode: string;
 }
 
+interface ITransactionsByReferenceDate {
+  formattedDate: string;
+  date: Date;
+}
+
 export interface ITransactionsByReferenceTransaction {
+  date: ITransactionsByReferenceDate;
+
   credit: ITransactionsByReferenceAmount;
   debit: ITransactionsByReferenceAmount;
 

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByReference/TransactionsByReferenceReport.ts

@@ -29,7 +29,7 @@ export class TransactionsByReference extends FinancialSheet {
     this.transactions = transactions;
     this.query = query;
     this.baseCurrency = baseCurrency;
-    this.numberFormat = this.query.numberFormat;
+    // this.numberFormat = this.query.numberFormat;
   }
 
   /**
@@ -46,7 +46,10 @@ export class TransactionsByReference extends FinancialSheet {
       credit: this.getAmountMeta(transaction.credit, { money: false }),
       debit: this.getAmountMeta(transaction.debit, { money: false }),
 
-      referenceTypeFormatted: transaction.referenceTypeFormatted,
+      // @ts-ignore
+      // referenceTypeFormatted: transaction.referenceTypeFormatted,
+      referenceTypeFormatted: '',
+
       referenceType: transaction.referenceType,
       referenceId: transaction.referenceId,
 

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByVendor/TransactionsByVendor.ts

@@ -46,11 +46,11 @@ export class TransactionsByVendor extends TransactionsByContact {
    * @param {number} openingBalance - Opening balance amount.
    * @returns {ITransactionsByVendorsTransaction[]}
    */
-  private vendorTransactions(
+  public vendorTransactions(
     vendorId: number,
     openingBalance: number,
   ): ITransactionsByVendorsTransaction[] {
-    const openingBalanceLedger = this.repository.journal
+    const openingBalanceLedger = this.repository.ledger
       .whereContactId(vendorId)
       .whereFromDate(this.filter.fromDate)
       .whereToDate(this.filter.toDate);
@@ -68,7 +68,7 @@ export class TransactionsByVendor extends TransactionsByContact {
    * @param {IVendor} vendor
    * @returns {ITransactionsByVendorsVendor}
    */
-  private vendorMapper(
+  public vendorMapper(
     vendor: ModelObject<Vendor>,
   ): ITransactionsByVendorsVendor {
     const openingBalance = this.getContactOpeningBalance(vendor.id);
@@ -93,7 +93,7 @@ export class TransactionsByVendor extends TransactionsByContact {
    * @param {number} openingBalance
    * @returns
    */
-  private getVendorClosingBalance(
+  public getVendorClosingBalance(
     vendorTransactions: ITransactionsByVendorsTransaction[],
     openingBalance: number,
   ) {
@@ -108,7 +108,7 @@ export class TransactionsByVendor extends TransactionsByContact {
    * Detarmines whether the vendors post filter is active.
    * @returns {boolean}
    */
-  private isVendorsPostFilter = (): boolean => {
+  public isVendorsPostFilter = (): boolean => {
     return isEmpty(this.filter.vendorsIds);
   };
 
@@ -117,7 +117,7 @@ export class TransactionsByVendor extends TransactionsByContact {
    * @param {IVendor[]} vendors
    * @returns {ITransactionsByVendorsVendor[]}
    */
-  private vendorsMapper(
+  public vendorsMapper(
     vendors: ModelObject<Vendor>[],
   ): ITransactionsByVendorsVendor[] {
     return R.compose(

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByVendor/TransactionsByVendorApplication.ts

@@ -1,3 +1,4 @@
+import { Injectable } from '@nestjs/common';
 import {
   ITransactionsByVendorTable,
   ITransactionsByVendorsFilter,
@@ -7,7 +8,6 @@ import { TransactionsByVendorExportInjectable } from './TransactionsByVendorExpo
 import { TransactionsByVendorTableInjectable } from './TransactionsByVendorTableInjectable';
 import { TransactionsByVendorsInjectable } from './TransactionsByVendorInjectable';
 import { TransactionsByVendorsPdf } from './TransactionsByVendorPdf';
-import { Injectable } from '@nestjs/common';
 
 @Injectable()
 export class TransactionsByVendorApplication {
@@ -55,7 +55,6 @@ export class TransactionsByVendorApplication {
 
   /**
    * Retrieves the transactions by vendor in XLSX format.
-   * @param {number} tenantId
    * @param {ITransactionsByVendorsFilter} query
    * @returns {Promise<Buffer>}
    */
@@ -67,7 +66,6 @@ export class TransactionsByVendorApplication {
 
   /**
    * Retrieves the transactions by vendor in PDF format.
-   * @param {number} tenantId
    * @param {ITransactionsByVendorsFilter} query
    * @returns {Promise<Buffer>}
    */

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByVendor/TransactionsByVendorInjectable.ts

@@ -30,6 +30,12 @@ export class TransactionsByVendorsInjectable {
   ): Promise<ITransactionsByVendorsStatement> {
     const filter = { ...getTransactionsByVendorDefaultQuery(), ...query };
 
+    // Set filter.
+    this.transactionsByVendorRepository.setFilter(filter);
+
+    // Initialize the repository.
+    await this.transactionsByVendorRepository.asyncInit();
+
     // Transactions by customers data mapper.
     const reportInstance = new TransactionsByVendor(
       this.transactionsByVendorRepository,

packages/server-nest/src/modules/FinancialStatements/modules/TransactionsByVendor/TransactionsByVendorRepository.ts

@@ -1,4 +1,5 @@
 import * as R from 'ramda';
+import * as moment from 'moment';
 import { isEmpty, map } from 'lodash';
 import { Inject, Injectable } from '@nestjs/common';
 import { AccountTransaction } from '@/modules/Accounts/models/AccountTransaction.model';
@@ -12,6 +13,7 @@ import { AccountRepository } from '@/modules/Accounts/repositories/Account.repos
 import { Ledger } from '@/modules/Ledger/Ledger';
 import { ModelObject } from 'objection';
 import { ITransactionsByVendorsFilter } from './TransactionsByVendor.types';
+import { DateInput } from '@/common/types/Date';
 
 @Injectable()
 export class TransactionsByVendorRepository extends TransactionsByContactRepository {
@@ -67,11 +69,17 @@ export class TransactionsByVendorRepository extends TransactionsByContactReposit
   public reportEntries: ILedgerEntry[];
 
   /**
-   * Journal.
-   * @param {Ledger} journal
+   * Set filter.
+   * @param {ITransactionsByVendorsFilter} filter
    */
-  public journal: Ledger;
+  public setFilter(filter: ITransactionsByVendorsFilter) {
+    this.filter = filter;
+  }
 
+  /**
+   * Initialize the repository.
+   * @returns {Promise<void>}
+   */
   async asyncInit() {
     await this.initBaseCurrency();
     await this.initVendors();
@@ -114,7 +122,7 @@ export class TransactionsByVendorRepository extends TransactionsByContactReposit
   }
 
   async initLedger() {
-    this.journal = new Ledger(this.reportEntries);
+    this.ledger = new Ledger(this.reportEntries);
   }
 
   /**
@@ -145,8 +153,8 @@ export class TransactionsByVendorRepository extends TransactionsByContactReposit
    * @param {number[]} customersIds
    */
   public async getVendorsPeriodEntries(
-    fromDate: moment.MomentInput,
-    toDate: moment.MomentInput,
+    fromDate: DateInput,
+    toDate: DateInput,
   ): Promise<ILedgerEntry[]> {
     const transactions = await this.getVendorsPeriodTransactions(
       fromDate,
@@ -172,8 +180,8 @@ export class TransactionsByVendorRepository extends TransactionsByContactReposit
    * @returns {Promise<ILedgerEntry[]>}
    */
   public async getReportEntries(
-    fromDate: moment.MomentInput,
-    toDate: moment.MomentInput,
+    fromDate: DateInput,
+    toDate: DateInput,
   ): Promise<ILedgerEntry[]> {
     const openingBalanceDate = moment(fromDate).subtract(1, 'days').toDate();
 
@@ -240,8 +248,8 @@ export class TransactionsByVendorRepository extends TransactionsByContactReposit
    * @returns {Promise<AccountTransaction[]>}
    */
   public async getVendorsPeriodTransactions(
-    fromDate: moment.MomentInput,
-    toDate: moment.MomentInput,
+    fromDate: DateInput,
+    toDate: DateInput,
   ): Promise<AccountTransaction[]> {
     const receivableAccounts = await this.getPayableAccounts();
     const receivableAccountsIds = map(receivableAccounts, 'id');

packages/server-nest/src/modules/FinancialStatements/modules/VendorBalanceSummary/VendorBalanceSummary.controller.ts

@@ -0,0 +1,60 @@
+import { Controller, Get, Headers, Query, Res } from '@nestjs/common';
+import { IVendorBalanceSummaryQuery } from './VendorBalanceSummary.types';
+import { VendorBalanceSummaryApplication } from './VendorBalanceSummaryApplication';
+import { Response } from 'express';
+import { AcceptType } from '@/constants/accept-type';
+import { ApiOperation, ApiResponse } from '@nestjs/swagger';
+import { PublicRoute } from '@/modules/Auth/Jwt.guard';
+
+@Controller('/reports/vendor-balance-summary')
+@PublicRoute()
+export class VendorBalanceSummaryController {
+  constructor(
+    private readonly vendorBalanceSummaryApp: VendorBalanceSummaryApplication,
+  ) {}
+
+  @Get()
+  @ApiOperation({ summary: 'Get vendor balance summary' })
+  @ApiResponse({ status: 200, description: 'Vendor balance summary' })
+  async vendorBalanceSummary(
+    @Query() filter: IVendorBalanceSummaryQuery,
+    @Res() res: Response,
+    @Headers('accept') acceptHeader: string,
+  ) {
+    // Retrieves the csv format.
+    if (acceptHeader.includes(AcceptType.ApplicationCsv)) {
+      const buffer = await this.vendorBalanceSummaryApp.csv(filter);
+
+      res.setHeader('Content-Disposition', 'attachment; filename=output.csv');
+      res.setHeader('Content-Type', 'text/csv');
+
+      return res.send(buffer);
+    } else if (acceptHeader.includes(AcceptType.ApplicationXlsx)) {
+      const buffer = await this.vendorBalanceSummaryApp.xlsx(filter);
+
+      res.setHeader('Content-Disposition', 'attachment; filename=output.xlsx');
+      res.setHeader('Content-Type', 'application/vnd.openxmlformats');
+
+      return res.send(buffer);
+
+      // Retrieves the json table format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationJsonTable)) {
+      const table = await this.vendorBalanceSummaryApp.table(filter);
+
+      return res.status(200).send(table);
+      // Retrieves the pdf format.
+    } else if (acceptHeader.includes(AcceptType.ApplicationPdf)) {
+      const pdfContent = await this.vendorBalanceSummaryApp.pdf(filter);
+
+      res.set({
+        'Content-Type': 'application/pdf',
+        'Content-Length': pdfContent.length,
+      });
+      return res.send(pdfContent);
+      // Retrieves the json format.
+    } else {
+      const sheet = await this.vendorBalanceSummaryApp.sheet(filter);
+      return res.status(200).send(sheet);
+    }
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/VendorBalanceSummary/VendorBalanceSummary.module.ts

@@ -0,0 +1,19 @@
+import { Module } from '@nestjs/common';
+import { VendorBalanceSummaryController } from './VendorBalanceSummary.controller';
+import { VendorBalanceSummaryService } from './VendorBalanceSummaryService';
+import { VendorBalanceSummaryTableInjectable } from './VendorBalanceSummaryTableInjectable';
+import { VendorBalanceSummaryExportInjectable } from './VendorBalanceSummaryExportInjectable';
+import { VendorBalanceSummaryPdf } from './VendorBalanceSummaryPdf';
+import { VendorBalanceSummaryApplication } from './VendorBalanceSummaryApplication';
+
+@Module({
+  providers: [
+    VendorBalanceSummaryTableInjectable,
+    VendorBalanceSummaryExportInjectable,
+    VendorBalanceSummaryService,
+    VendorBalanceSummaryPdf,
+    VendorBalanceSummaryApplication,
+  ],
+  controllers: [VendorBalanceSummaryController],
+})
+export class VendorBalanceSummaryModule {}

packages/server-nest/src/modules/FinancialStatements/modules/VendorBalanceSummary/VendorBalanceSummary.ts

@@ -0,0 +1,102 @@
+import * as R from 'ramda';
+import { isEmpty } from 'lodash';
+import { ModelObject } from 'objection';
+import {
+  IVendorBalanceSummaryVendor,
+  IVendorBalanceSummaryQuery,
+  IVendorBalanceSummaryData,
+} from './VendorBalanceSummary.types';
+import { ContactBalanceSummaryReport } from '../ContactBalanceSummary/ContactBalanceSummary';
+import { Vendor } from '@/modules/Vendors/models/Vendor';
+import { INumberFormatQuery } from '../../types/Report.types';
+import { VendorBalanceSummaryRepository } from './VendorBalanceSummaryRepository';
+
+export class VendorBalanceSummaryReport extends ContactBalanceSummaryReport {
+  readonly filter: IVendorBalanceSummaryQuery;
+  readonly numberFormat: INumberFormatQuery;
+  readonly repo: VendorBalanceSummaryRepository;
+
+  /**
+   * Constructor method.
+   * @param {IJournalPoster} receivableLedger
+   * @param {IVendor[]} vendors
+   * @param {IVendorBalanceSummaryQuery} filter
+   * @param {string} baseCurrency
+   */
+  constructor(
+    repo: VendorBalanceSummaryRepository,
+    filter: IVendorBalanceSummaryQuery,
+  ) {
+    super();
+
+    this.filter = filter;
+    this.numberFormat = this.filter.numberFormat;
+  }
+
+  /**
+   * Customer section mapper.
+   * @param {ModelObject<Vendor>} vendor
+   * @returns {IVendorBalanceSummaryVendor}
+   */
+  private vendorMapper = (
+    vendor: ModelObject<Vendor>,
+  ): IVendorBalanceSummaryVendor => {
+    const closingBalance = this.repo.ledger
+      .whereContactId(vendor.id)
+      .getClosingBalance();
+
+    return {
+      id: vendor.id,
+      vendorName: vendor.displayName,
+      total: this.getContactTotalFormat(closingBalance),
+    };
+  };
+
+  /**
+   * Mappes the vendor model object to vendor balance summary section.
+   * @param {ModelObject<Vendor>[]} vendors - Customers.
+   * @returns {IVendorBalanceSummaryVendor[]}
+   */
+  private vendorsMapper = (
+    vendors: ModelObject<Vendor>[],
+  ): IVendorBalanceSummaryVendor[] => {
+    return vendors.map(this.vendorMapper);
+  };
+
+  /**
+   * Detarmines whether the vendors post filter is active.
+   * @returns {boolean}
+   */
+  private isVendorsPostFilter = (): boolean => {
+    return isEmpty(this.filter.vendorsIds);
+  };
+
+  /**
+   * Retrieve the vendors sections of the report.
+   * @param {ModelObject<Vendor>} vendors
+   * @returns {IVendorBalanceSummaryVendor[]}
+   */
+  private getVendorsSection(
+    vendors: ModelObject<Vendor>[],
+  ): IVendorBalanceSummaryVendor[] {
+    return R.compose(
+      R.when(this.isVendorsPostFilter, this.contactsFilter),
+      R.when(
+        R.always(this.filter.percentageColumn),
+        this.contactCamparsionPercentageOfColumn,
+      ),
+      this.vendorsMapper,
+    )(vendors);
+  }
+
+  /**
+   * Retrieve the report statement data.
+   * @returns {IVendorBalanceSummaryData}
+   */
+  public reportData(): IVendorBalanceSummaryData {
+    const vendors = this.getVendorsSection(this.repo.vendors);
+    const total = this.getContactsTotalSection(vendors);
+
+    return { vendors, total };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/VendorBalanceSummary/VendorBalanceSummary.types.ts

@@ -0,0 +1,63 @@
+import {
+  IFinancialSheetCommonMeta,
+  INumberFormatQuery,
+} from '../../types/Report.types';
+import { IFinancialTable } from '../../types/Table.types';
+
+export interface IVendorBalanceSummaryQuery {
+  asDate: Date;
+  vendorsIds: number[];
+  numberFormat: INumberFormatQuery;
+  percentageColumn: boolean;
+  noneTransactions: boolean;
+  noneZero: boolean;
+}
+
+export interface IVendorBalanceSummaryAmount {
+  amount: number;
+  formattedAmount: string;
+  currencyCode: string;
+}
+export interface IVendorBalanceSummaryPercentage {
+  amount: number;
+  formattedAmount: string;
+}
+
+export interface IVendorBalanceSummaryVendor {
+  id: number;
+  vendorName: string;
+  total: IVendorBalanceSummaryAmount;
+  percentageOfColumn?: IVendorBalanceSummaryPercentage;
+}
+
+export interface IVendorBalanceSummaryTotal {
+  total: IVendorBalanceSummaryAmount;
+  percentageOfColumn?: IVendorBalanceSummaryPercentage;
+}
+
+export interface IVendorBalanceSummaryData {
+  vendors: IVendorBalanceSummaryVendor[];
+  total: IVendorBalanceSummaryTotal;
+}
+
+export interface IVendorBalanceSummaryStatement {
+  data: IVendorBalanceSummaryData;
+  query: IVendorBalanceSummaryQuery;
+  meta: IVendorBalanceSummaryMeta;
+}
+
+export interface IVendorBalanceSummaryService {
+  vendorBalanceSummary(
+    tenantId: number,
+    query: IVendorBalanceSummaryQuery,
+  ): Promise<IVendorBalanceSummaryStatement>;
+}
+
+export interface IVendorBalanceSummaryTable extends IFinancialTable {
+  query: IVendorBalanceSummaryQuery;
+  meta: IVendorBalanceSummaryMeta;
+}
+
+export interface IVendorBalanceSummaryMeta extends IFinancialSheetCommonMeta {
+  formattedAsDate: string;
+}

packages/server-nest/src/modules/FinancialStatements/modules/VendorBalanceSummary/VendorBalanceSummaryApplication.ts

@@ -0,0 +1,60 @@
+import { VendorBalanceSummaryTableInjectable } from './VendorBalanceSummaryTableInjectable';
+import { VendorBalanceSummaryExportInjectable } from './VendorBalanceSummaryExportInjectable';
+import { VendorBalanceSummaryService } from './VendorBalanceSummaryService';
+import { VendorBalanceSummaryPdf } from './VendorBalanceSummaryPdf';
+import { Injectable } from '@nestjs/common';
+import { IVendorBalanceSummaryQuery } from './VendorBalanceSummary.types';
+
+@Injectable()
+export class VendorBalanceSummaryApplication {
+  constructor(
+    private readonly vendorBalanceSummaryTable: VendorBalanceSummaryTableInjectable,
+    private readonly vendorBalanceSummarySheet: VendorBalanceSummaryService,
+    private readonly vendorBalanceSummaryExport: VendorBalanceSummaryExportInjectable,
+    private readonly vendorBalanceSummaryPdf: VendorBalanceSummaryPdf,
+  ) {}
+
+  /**
+   * Retrieves the vendor balance summary sheet in sheet format.
+   * @param {IVendorBalanceSummaryQuery} query
+   */
+  public sheet(query: IVendorBalanceSummaryQuery) {
+    return this.vendorBalanceSummarySheet.vendorBalanceSummary(query);
+  }
+
+  /**
+   * Retrieves the vendor balance summary sheet in table format.
+   * @param {IVendorBalanceSummaryQuery} query
+   * @returns {}
+   */
+  public table(query: IVendorBalanceSummaryQuery) {
+    return this.vendorBalanceSummaryTable.table(query);
+  }
+
+  /**
+   * Retrieves the vendor balance summary sheet in xlsx format.
+   * @param {IVendorBalanceSummaryQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public xlsx(query: IVendorBalanceSummaryQuery): Promise<Buffer> {
+    return this.vendorBalanceSummaryExport.xlsx(query);
+  }
+
+  /**
+   * Retrieves the vendor balance summary sheet in csv format.
+   * @param {IVendorBalanceSummaryQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public csv(query: IVendorBalanceSummaryQuery): Promise<string> {
+    return this.vendorBalanceSummaryExport.csv(query);
+  }
+
+  /**
+   * Retrieves the vendor balance summary sheet in pdf format.
+   * @param {IVendorBalanceSummaryQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public pdf(query: IVendorBalanceSummaryQuery) {
+    return this.vendorBalanceSummaryPdf.pdf(query);
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/VendorBalanceSummary/VendorBalanceSummaryExportInjectable.ts

@@ -0,0 +1,39 @@
+import { Injectable } from '@nestjs/common';
+import { IVendorBalanceSummaryQuery } from './VendorBalanceSummary.types';
+import { VendorBalanceSummaryTableInjectable } from './VendorBalanceSummaryTableInjectable';
+import { TableSheet } from '../../common/TableSheet';
+
+@Injectable()
+export class VendorBalanceSummaryExportInjectable {
+  constructor(
+    private readonly customerBalanceSummaryTable: VendorBalanceSummaryTableInjectable,
+  ) {}
+
+  /**
+   * Retrieves the vendor balance summary sheet in XLSX format.
+   * @param {IVendorBalanceSummaryQuery} query - Query.
+   * @returns {Promise<Buffer>}
+   */
+  public async xlsx(query: IVendorBalanceSummaryQuery) {
+    const table = await this.customerBalanceSummaryTable.table(query);
+
+    const tableSheet = new TableSheet(table.table);
+    const tableCsv = tableSheet.convertToXLSX();
+
+    return tableSheet.convertToBuffer(tableCsv, 'xlsx');
+  }
+
+  /**
+   * Retrieves the vendor balance summary sheet in CSV format.
+   * @param {IVendorBalanceSummaryQuery} query - Query.
+   * @returns {Promise<string>}
+   */
+  public async csv(query: IVendorBalanceSummaryQuery): Promise<string> {
+    const table = await this.customerBalanceSummaryTable.table(query);
+
+    const tableSheet = new TableSheet(table.table);
+    const tableCsv = tableSheet.convertToCSV();
+
+    return tableCsv;
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/VendorBalanceSummary/VendorBalanceSummaryMeta.ts

@@ -0,0 +1,30 @@
+import * as moment from 'moment';
+import { Injectable } from '@nestjs/common';
+import {
+  IVendorBalanceSummaryMeta,
+  IVendorBalanceSummaryQuery,
+} from './VendorBalanceSummary.types';
+import { FinancialSheetMeta } from '../../common/FinancialSheetMeta';
+
+@Injectable()
+export class VendorBalanceSummaryMeta {
+  constructor(private readonly financialSheetMeta: FinancialSheetMeta) {}
+
+  /**
+   * Retrieves the vendor balance summary meta.
+   * @param {IVendorBalanceSummaryQuery} query - Query.
+   * @returns {IBalanceSheetMeta}
+   */
+  public async meta(
+    query: IVendorBalanceSummaryQuery,
+  ): Promise<IVendorBalanceSummaryMeta> {
+    const commonMeta = await this.financialSheetMeta.meta();
+    const formattedAsDate = moment(query.asDate).format('YYYY/MM/DD');
+
+    return {
+      ...commonMeta,
+      sheetName: 'Vendor Balance Summary',
+      formattedAsDate,
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/VendorBalanceSummary/VendorBalanceSummaryPdf.ts

@@ -0,0 +1,31 @@
+import { Injectable } from '@nestjs/common';
+import { TableSheetPdf } from '../../common/TableSheetPdf';
+import { IVendorBalanceSummaryQuery } from './VendorBalanceSummary.types';
+import { VendorBalanceSummaryTableInjectable } from './VendorBalanceSummaryTableInjectable';
+import { HtmlTableCustomCss } from './constants';
+
+@Injectable()
+export class VendorBalanceSummaryPdf {
+  constructor(
+    private readonly vendorBalanceSummaryTable: VendorBalanceSummaryTableInjectable,
+    private readonly tableSheetPdf: TableSheetPdf,
+  ) {}
+
+  /**
+   * Retrieves the sales by items sheet in pdf format.
+   * @param {IVendorBalanceSummaryQuery} query - Query.
+   * @returns {Promise<IBalanceSheetTable>}
+   */
+  public async pdf(
+    query: IVendorBalanceSummaryQuery,
+  ): Promise<Buffer> {
+    const table = await this.vendorBalanceSummaryTable.table(query);
+
+    return this.tableSheetPdf.convertToPdf(
+      table.table,
+      table.meta.sheetName,
+      table.meta.formattedAsDate,
+      HtmlTableCustomCss,
+    );
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/VendorBalanceSummary/VendorBalanceSummaryRepository.ts

@@ -0,0 +1,161 @@
+import * as R from 'ramda';
+import { isEmpty, map } from 'lodash';
+import { Inject, Injectable, Scope } from '@nestjs/common';
+import { Ledger } from '@/modules/Ledger/Ledger';
+import { IVendorBalanceSummaryQuery } from './VendorBalanceSummary.types';
+import { AccountTransaction } from '@/modules/Accounts/models/AccountTransaction.model';
+import { Vendor } from '@/modules/Vendors/models/Vendor';
+import { Account } from '@/modules/Accounts/models/Account.model';
+import { ILedgerEntry } from '@/modules/Ledger/types/Ledger.types';
+import { ModelObject } from 'objection';
+import { ACCOUNT_TYPE } from '@/constants/accounts';
+
+@Injectable({ scope: Scope.TRANSIENT })
+export class VendorBalanceSummaryRepository {
+  @Inject(AccountTransaction.name)
+  private readonly accountTransactionModel: typeof AccountTransaction;
+
+  @Inject(Vendor.name)
+  private readonly vendorModel: typeof Vendor;
+
+  @Inject(Account.name)
+  private readonly accountModel: typeof Account;
+
+  /**
+   * Filter.
+   * @param {IVendorBalanceSummaryQuery} filter
+   */
+  public filter: IVendorBalanceSummaryQuery;
+
+  /**
+   * Vendors entries.
+   * @param {Array<ILedgerEntry>} vendorEntries
+   */
+  public vendorEntries: Array<ILedgerEntry>;
+
+  /**
+   * Vendors list.
+   * @param {Array<ModelObject<Vendor>>} vendors
+   */
+  public vendors: Array<ModelObject<Vendor>>;
+
+  /**
+   * Ledger instance.
+   */
+  public ledger: Ledger;
+
+  /**
+   * Base currency.
+   */
+  public baseCurrency: string;
+
+  /**
+   * Set the filter.
+   * @param {IVendorBalanceSummaryQuery} filter
+   */
+  public setFilter(filter: IVendorBalanceSummaryQuery) {
+    this.filter = filter;
+  }
+
+  /**
+   * Initialize the vendor balance summary repository.
+   */
+  async asyncInit() {
+    this.initVendors();
+    this.initVendorsEntries();
+    this.initLedger();
+  }
+
+  /**
+   * Initialize the vendors.
+   */
+  async initVendors() {
+    const vendors = await this.getVendors(this.filter.vendorsIds);
+    this.vendors = vendors;
+  }
+
+  /**
+   * Initialize the vendors entries.
+   */
+  async initVendorsEntries() {
+    const vendorsEntries = await this.getReportVendorsEntries(
+      this.filter.asDate,
+    );
+    this.vendorEntries = vendorsEntries;
+  }
+
+  /**
+   * Initialize the ledger.
+   */
+  async initLedger() {
+    this.ledger = new Ledger(this.vendorEntries);
+  }
+
+  /**
+   * Retrieve the report vendors.
+   * @param {number[]} vendorsIds - Vendors ids.
+   * @returns {IVendor[]}
+   */
+  public async getVendors(
+    vendorsIds?: number[],
+  ): Promise<ModelObject<Vendor>[]> {
+    const vendorQuery = this.vendorModel.query().orderBy('displayName');
+
+    if (!isEmpty(vendorsIds)) {
+      vendorQuery.whereIn('id', vendorsIds);
+    }
+    return vendorQuery;
+  }
+
+  /**
+   * Retrieve the payable accounts.
+   * @param {number} tenantId
+   * @returns {Promise<IAccount[]>}
+   */
+  public async getPayableAccounts(): Promise<ModelObject<Account>[]> {
+    return this.accountModel
+      .query()
+      .where('accountType', ACCOUNT_TYPE.ACCOUNTS_PAYABLE);
+  }
+
+  /**
+   * Retrieve the vendors transactions.
+   * @param {number} tenantId
+   * @param {Date} asDate
+   * @returns
+   */
+  public async getVendorsTransactions(asDate: Date | string) {
+    // Retrieve payable accounts .
+    const payableAccounts = await this.getPayableAccounts();
+    const payableAccountsIds = map(payableAccounts, 'id');
+
+    // Retrieve the customers transactions of A/R accounts.
+    const customersTranasctions = await this.accountTransactionModel
+      .query()
+      .onBuild((query) => {
+        query.whereIn('accountId', payableAccountsIds);
+        query.modify('filterDateRange', null, asDate);
+        query.groupBy('contactId');
+        query.sum('credit as credit');
+        query.sum('debit as debit');
+        query.select('contactId');
+      });
+    return customersTranasctions;
+  }
+
+  /**
+   *
+   * Retrieve the vendors ledger entrjes.
+   * @param {number} tenantId -
+   * @param {Date|string} date -
+   * @returns {Promise<ILedgerEntry>}
+   */
+  private async getReportVendorsEntries(
+    date: Date | string,
+  ): Promise<ILedgerEntry[]> {
+    const transactions = await this.getVendorsTransactions(date);
+    const commonProps = { accountNormal: 'credit' };
+
+    return R.map(R.merge(commonProps))(transactions);
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/VendorBalanceSummary/VendorBalanceSummaryService.ts

@@ -0,0 +1,53 @@
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { Injectable } from '@nestjs/common';
+import {
+  IVendorBalanceSummaryQuery,
+  IVendorBalanceSummaryStatement,
+} from './VendorBalanceSummary.types';
+import { VendorBalanceSummaryReport } from './VendorBalanceSummary';
+import { VendorBalanceSummaryRepository } from './VendorBalanceSummaryRepository';
+import { VendorBalanceSummaryMeta } from './VendorBalanceSummaryMeta';
+import { getVendorBalanceSummaryDefaultQuery } from './utils';
+import { events } from '@/common/events/events';
+
+@Injectable()
+export class VendorBalanceSummaryService {
+  constructor(
+    private readonly vendorBalanceSummaryRepository: VendorBalanceSummaryRepository,
+    private readonly vendorBalanceSummaryMeta: VendorBalanceSummaryMeta,
+    private readonly eventEmitter: EventEmitter2,
+  ) {}
+
+  /**
+   * Retrieve the statment of customer balance summary report.
+   * @param {IVendorBalanceSummaryQuery} query - 
+   * @return {Promise<IVendorBalanceSummaryStatement>}
+   */
+  public async vendorBalanceSummary(
+    query: IVendorBalanceSummaryQuery,
+  ): Promise<IVendorBalanceSummaryStatement> {
+    const filter = { ...getVendorBalanceSummaryDefaultQuery(), ...query };
+
+    this.vendorBalanceSummaryRepository.setFilter(filter);
+    this.vendorBalanceSummaryRepository.asyncInit();
+
+    // Report instance.
+    const reportInstance = new VendorBalanceSummaryReport(
+      this.vendorBalanceSummaryRepository,
+      filter,
+    );
+    // Retrieve the vendor balance summary meta.
+    const meta = await this.vendorBalanceSummaryMeta.meta(filter);
+
+    // Triggers `onVendorBalanceSummaryViewed` event.
+    await this.eventEmitter.emitAsync(
+      events.reports.onVendorBalanceSummaryViewed,
+      { query },
+    );
+    return {
+      data: reportInstance.reportData(),
+      query: filter,
+      meta,
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/VendorBalanceSummary/VendorBalanceSummaryTableInjectable.ts

@@ -0,0 +1,40 @@
+import { Injectable } from '@nestjs/common';
+import {
+  IVendorBalanceSummaryQuery,
+  IVendorBalanceSummaryTable,
+} from './VendorBalanceSummary.types';
+import { VendorBalanceSummaryTable } from './VendorBalanceSummaryTableRows';
+import { VendorBalanceSummaryService } from './VendorBalanceSummaryService';
+import { I18nService } from 'nestjs-i18n';
+
+@Injectable()
+export class VendorBalanceSummaryTableInjectable {
+  constructor(
+    private readonly vendorBalanceSummarySheet: VendorBalanceSummaryService,
+    private readonly i18n: I18nService
+  ) {}
+
+  /**
+   * Retrieves the vendor balance summary sheet in table format.
+   * @param {IVendorBalanceSummaryQuery} query - Query.
+   * @returns {Promise<IVendorBalanceSummaryTable>}
+   */
+  public async table(
+    query: IVendorBalanceSummaryQuery,
+  ): Promise<IVendorBalanceSummaryTable> {
+    const { data, meta } =
+      await this.vendorBalanceSummarySheet.vendorBalanceSummary(
+        query,
+      );
+    const table = new VendorBalanceSummaryTable(data, query, this.i18n);
+
+    return {
+      table: {
+        columns: table.tableColumns(),
+        rows: table.tableRows(),
+      },
+      query,
+      meta,
+    };
+  }
+}

packages/server-nest/src/modules/FinancialStatements/modules/VendorBalanceSummary/VendorBalanceSummaryTableRows.ts

@@ -0,0 +1,154 @@
+import * as R from 'ramda';
+import { I18nService } from 'nestjs-i18n';
+import {
+  IVendorBalanceSummaryData,
+  IVendorBalanceSummaryVendor,
+  IVendorBalanceSummaryTotal,
+  IVendorBalanceSummaryQuery,
+} from './VendorBalanceSummary.types';
+import {
+  ITableRow,
+  ITableColumn,
+  IColumnMapperMeta,
+} from '../../types/Table.types';
+import { tableMapper, tableRowMapper } from '../../utils/Table.utils';
+
+enum TABLE_ROWS_TYPES {
+  VENDOR = 'VENDOR',
+  TOTAL = 'TOTAL',
+}
+
+export class VendorBalanceSummaryTable {
+  private readonly i18n: I18nService;
+  private readonly report: IVendorBalanceSummaryData;
+  private readonly query: IVendorBalanceSummaryQuery;
+
+  /**
+   * Constructor method.
+   * @param {IVendorBalanceSummaryData} report - Report.
+   * @param {IVendorBalanceSummaryQuery} query - Query.
+   * @param {I18nService} i18n - I18n service.
+   */
+  constructor(
+    report: IVendorBalanceSummaryData,
+    query: IVendorBalanceSummaryQuery,
+    i18n: I18nService
+  ) {
+    this.report = report;
+    this.query = query;
+    this.i18n = i18n;
+  }
+
+  /**
+   * Retrieve percentage columns accessor.
+   * @returns {IColumnMapperMeta[]}
+   */
+  private getPercentageColumnsAccessor = (): IColumnMapperMeta[] => {
+    return [
+      {
+        key: 'percentageOfColumn',
+        accessor: 'percentageOfColumn.formattedAmount',
+      },
+    ];
+  };
+
+  /**
+   * Retrieve vendor node columns accessor.
+   * @returns {IColumnMapperMeta[]}
+   */
+  private getVendorColumnsAccessor = (): IColumnMapperMeta[] => {
+    const columns = [
+      { key: 'name', accessor: 'vendorName' },
+      { key: 'total', accessor: 'total.formattedAmount' },
+    ];
+    return R.compose(
+      R.concat(columns),
+      R.when(
+        R.always(this.query.percentageColumn),
+        R.concat(this.getPercentageColumnsAccessor())
+      )
+    )([]);
+  };
+
+  /**
+   * Transformes the vendors to table rows.
+   * @param {IVendorBalanceSummaryVendor[]} vendors
+   * @returns {ITableRow[]}
+   */
+  private vendorsTransformer = (
+    vendors: IVendorBalanceSummaryVendor[]
+  ): ITableRow[] => {
+    const columns = this.getVendorColumnsAccessor();
+
+    return tableMapper(vendors, columns, {
+      rowTypes: [TABLE_ROWS_TYPES.VENDOR],
+    });
+  };
+
+  /**
+   * Retrieve total node columns accessor.
+   * @returns {IColumnMapperMeta[]}
+   */
+  private getTotalColumnsAccessor = (): IColumnMapperMeta[] => {
+    const columns = [
+      { key: 'name', value: this.i18n.t('Total') },
+      { key: 'total', accessor: 'total.formattedAmount' },
+    ];
+    return R.compose(
+      R.concat(columns),
+      R.when(
+        R.always(this.query.percentageColumn),
+        R.concat(this.getPercentageColumnsAccessor())
+      )
+    )([]);
+  };
+
+  /**
+   * Transformes the total to table row.
+   * @param   {IVendorBalanceSummaryTotal} total
+   * @returns {ITableRow}
+   */
+  private totalTransformer = (total: IVendorBalanceSummaryTotal): ITableRow => {
+    const columns = this.getTotalColumnsAccessor();
+
+    return tableRowMapper(total, columns, {
+      rowTypes: [TABLE_ROWS_TYPES.TOTAL],
+    });
+  };
+
+  /**
+   * Transformes the vendor balance summary to table rows.
+   * @param {IVendorBalanceSummaryData} vendorBalanceSummary
+   * @returns {ITableRow[]}
+   */
+  public tableRows = (): ITableRow[] => {
+    const vendors = this.vendorsTransformer(this.report.vendors);
+    const total = this.totalTransformer(this.report.total);
+
+    return vendors.length > 0 ? [...vendors, total] : [];
+  };
+
+  /**
+   * Retrieve the report statement columns
+   * @returns {ITableColumn[]}
+   */
+  public tableColumns = (): ITableColumn[] => {
+    const columns = [
+      {
+        key: 'name',
+        label: this.i18n.t('contact_summary_balance.account_name'),
+      },
+      { key: 'total', label: this.i18n.t('contact_summary_balance.total') },
+    ];
+    return R.compose(
+      R.when(
+        R.always(this.query.percentageColumn),
+        R.append({
+          key: 'percentage_of_column',
+          label: this.i18n.t('contact_summary_balance.percentage_column'),
+        })
+      ),
+      R.concat(columns)
+    )([]);
+  };
+}

packages/server-nest/src/modules/FinancialStatements/modules/VendorBalanceSummary/constants.ts

@@ -0,0 +1,14 @@
+export const HtmlTableCustomCss = `
+table tr.row-type--total td {
+  font-weight: 600;
+  border-top: 1px solid #bbb;
+  border-bottom: 3px double #333;
+}
+table .column--name {
+  width: 65%;
+}
+table .column--total,
+table .cell--total {
+  text-align: right;
+}
+`;

packages/server-nest/src/modules/FinancialStatements/modules/VendorBalanceSummary/utils.ts

@@ -0,0 +1,17 @@
+
+
+export const getVendorBalanceSummaryDefaultQuery = () => {
+  return {
+    asDate: moment().format('YYYY-MM-DD'),
+    numberFormat: {
+      precision: 2,
+      divideOn1000: false,
+      showZero: false,
+      formatMoney: 'total',
+      negativeFormat: 'mines',
+    },
+    percentageColumn: false,
+    noneZero: false,
+    noneTransactions: true,
+  };
+}

packages/server-nest/src/modules/FinancialStatements/types/Table.types.ts

@@ -13,6 +13,7 @@ export type ITableRow = {
   cells: ITableCell[];
   rowTypes?: Array<any>;
   id?: string;
+  children?: ITableRow[];
 };
 
 export interface ITableColumn {

packages/server-nest/src/modules/Ledger/Ledger.ts

@@ -1,4 +1,4 @@
-import moment from 'moment';
+import * as moment from 'moment';
 import { defaultTo, sumBy, uniqBy } from 'lodash';
 import { ILedger } from './types/Ledger.types';
 import { ILedgerEntry } from './types/Ledger.types';