refactor: sale estimates to nestjs

packages/server-nest/package.json

@@ -34,9 +34,8 @@
     "@nestjs/throttler": "^6.2.1",
     "@types/passport-local": "^1.0.38",
     "@types/ramda": "^0.30.2",
-    "js-money": "^0.6.3",
     "accounting": "^0.4.1",
-    "object-hash": "^2.0.3",
+    "async": "^3.2.0",
     "bull": "^4.16.3",
     "bullmq": "^5.21.1",
     "cache-manager": "^6.1.1",
@@ -45,6 +44,7 @@
     "class-validator": "^0.14.1",
     "express-validator": "^7.2.0",
     "fp-ts": "^2.16.9",
+    "js-money": "^0.6.3",
     "knex": "^3.1.0",
     "lamda": "^0.4.1",
     "lodash": "^4.17.21",
@@ -53,6 +53,7 @@
     "mysql2": "^3.11.3",
     "nestjs-cls": "^4.4.1",
     "nestjs-i18n": "^10.4.9",
+    "object-hash": "^2.0.3",
     "objection": "^3.1.5",
     "passport": "^0.7.0",
     "passport-jwt": "^4.0.1",
@@ -61,6 +62,8 @@
     "redis": "^4.7.0",
     "reflect-metadata": "^0.2.0",
     "rxjs": "^7.8.1",
+    "serialize-interceptor": "^1.1.7",
+    "strategy": "^1.1.1",
     "zod": "^3.23.8"
   },
   "devDependencies": {

packages/server-nest/src/common/events/events.ts

@@ -213,6 +213,8 @@ export const events = {
     onPreMailSend: 'onSaleEstimatePreMailSend',
     onMailSend: 'onSaleEstimateMailSend',
     onMailSent: 'onSaleEstimateMailSend',
+
+    onViewed: 'onSaleEstimateViewed',
   },
 
   /**

packages/server-nest/src/common/filters/service-error.filter.ts

@@ -0,0 +1,24 @@
+import {
+  ExceptionFilter,
+  Catch,
+  ArgumentsHost,
+  HttpStatus,
+} from '@nestjs/common';
+import { Response } from 'express';
+import { ServiceError } from '@/modules/Items/ServiceError';
+
+@Catch(ServiceError)
+export class ServiceErrorFilter implements ExceptionFilter {
+  catch(exception: ServiceError, host: ArgumentsHost) {
+    const ctx = host.switchToHttp();
+    const response = ctx.getResponse<Response>();
+    const status = exception.getStatus();
+
+    response.status(status).json({
+      statusCode: status,
+      errorType: exception.errorType,
+      message: exception.message,
+      payload: exception.payload,
+    });
+  }
+}

packages/server-nest/src/common/interceptors/serialize.interceptor.ts

@@ -0,0 +1,78 @@
+import {
+  type ExecutionContext,
+  Injectable,
+  type NestInterceptor,
+  type CallHandler,
+  Optional,
+} from '@nestjs/common';
+import { type Observable } from 'rxjs';
+import { map } from 'rxjs/operators';
+
+export function camelToSnake<T = any>(value: T) {
+  if (value === null || value === undefined) {
+    return value;
+  }
+  if (Array.isArray(value)) {
+    return value.map(camelToSnake);
+  }
+  if (typeof value === 'object' && !(value instanceof Date)) {
+    return Object.fromEntries(
+      Object.entries(value).map(([key, value]) => [
+        key
+          .split(/(?=[A-Z])/)
+          .join('_')
+          .toLowerCase(),
+        camelToSnake(value),
+      ]),
+    );
+  }
+  return value;
+}
+
+export function snakeToCamel<T = any>(value: T) {
+  if (value === null || value === undefined) {
+    return value;
+  }
+
+  if (Array.isArray(value)) {
+    return value.map(snakeToCamel);
+  }
+
+  const impl = (str: string) => {
+    const converted = str.replace(/([-_]\w)/g, (group) =>
+      group[1].toUpperCase(),
+    );
+    return converted[0].toLowerCase() + converted.slice(1);
+  };
+
+  if (typeof value === 'object' && !(value instanceof Date)) {
+    return Object.fromEntries(
+      Object.entries(value).map(([key, value]) => [
+        impl(key),
+        snakeToCamel(value),
+      ]),
+    );
+  }
+  return value;
+}
+
+export const DEFAULT_STRATEGY = {
+  in: snakeToCamel,
+  out: camelToSnake,
+};
+
+@Injectable()
+export class SerializeInterceptor implements NestInterceptor<any, any> {
+  constructor(@Optional() readonly strategy = DEFAULT_STRATEGY) {}
+
+  intercept(
+    context: ExecutionContext,
+    next: CallHandler<any>,
+  ): Observable<any> {
+    const request = context.switchToHttp().getRequest();
+    request.body = this.strategy.in(request.body);
+
+    // handle returns stream..
+    return next.handle().pipe(map(this.strategy.out));
+  }
+}

packages/server-nest/src/main.ts

@@ -3,6 +3,7 @@ import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
 import { ClsMiddleware } from 'nestjs-cls';
 import { AppModule } from './modules/App/App.module';
 import './utils/moment-mysql';
+import { ServiceErrorFilter } from './common/filters/service-error.filter';
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
@@ -21,6 +22,8 @@ async function bootstrap() {
   const documentFactory = () => SwaggerModule.createDocument(app, config);
   SwaggerModule.setup('swagger', app, documentFactory);
 
+  app.useGlobalFilters(new ServiceErrorFilter());
+
   await app.listen(process.env.PORT ?? 3000);
 }
 bootstrap();

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

@@ -38,6 +38,8 @@ import { TaxRatesModule } from '../TaxRates/TaxRate.module';
 import { PdfTemplatesModule } from '../PdfTemplate/PdfTemplates.module';
 import { BranchesModule } from '../Branches/Branches.module';
 import { WarehousesModule } from '../Warehouses/Warehouses.module';
+import { SaleEstimatesModule } from '../SaleEstimates/SaleEstimates.module';
+import { SerializeInterceptor } from '@/common/interceptors/serialize.interceptor';
 
 @Module({
   imports: [
@@ -99,9 +101,14 @@ import { WarehousesModule } from '../Warehouses/Warehouses.module';
     PdfTemplatesModule,
     BranchesModule,
     WarehousesModule,
+    SaleEstimatesModule,
   ],
   controllers: [AppController],
   providers: [
+    {
+      provide: APP_INTERCEPTOR,
+      useClass: SerializeInterceptor,
+    },
     {
       provide: APP_GUARD,
       useClass: JwtAuthGuard,

packages/server-nest/src/modules/Attachments/Attachment.transformer.ts

@@ -0,0 +1,19 @@
+import { Transformer } from "../Transformer/Transformer";
+
+export class AttachmentTransformer extends Transformer {
+  /**
+   * Exclude attributes.
+   * @returns {string[]}
+   */
+  public excludeAttributes = (): string[] => {
+    return ['id', 'createdAt'];
+  };
+
+  /**
+   * Includeded attributes.
+   * @returns {string[]}
+   */
+  public includeAttributes = (): string[] => {
+    return [];
+  };
+}

packages/server-nest/src/modules/Attachments/Attachments.types.ts

@@ -0,0 +1,3 @@
+export interface AttachmentLinkDTO {
+  key: string;
+}

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

@@ -0,0 +1,12 @@
+import { Module } from '@nestjs/common';
+import { TransformerInjectable } from '../Transformer/TransformerInjectable.service';
+import { TenancyDatabaseModule } from '../Tenancy/TenancyDB/TenancyDB.module';
+import { AutoIncrementOrdersService } from './AutoIncrementOrders.service';
+
+@Module({
+  imports: [TenancyDatabaseModule],
+  controllers: [],
+  providers: [AutoIncrementOrdersService, TransformerInjectable],
+  exports: [AutoIncrementOrdersService],
+})
+export class AutoIncrementOrdersModule {}

packages/server-nest/src/modules/AutoIncrementOrders/AutoIncrementOrders.service.ts

@@ -0,0 +1,62 @@
+import { Injectable } from '@nestjs/common';
+
+/**
+ * Auto increment orders service.
+ */
+@Injectable()
+export class AutoIncrementOrdersService {
+  /**
+   * Check if the auto increment is enabled for the given settings group.
+   * @param {string} settingsGroup - Settings group.
+   * @returns {boolean}
+   */
+  public autoIncrementEnabled = (settingsGroup: string): boolean => {
+    // const settings = this.tenancy.settings(tenantId);
+    // const group = settingsGroup;
+
+    // // Settings service transaction number and prefix.
+    // return settings.get({ group, key: 'auto_increment' }, false);
+
+    return true;
+  };
+
+  /**
+   * Retrieve the next service transaction number.
+   * @param {string} settingsGroup
+   * @param {Function} getMaxTransactionNo
+   * @return {Promise<string>}
+   */
+  getNextTransactionNumber(group: string): string {
+    // const settings = this.tenancy.settings(tenantId);
+
+    // // Settings service transaction number and prefix.
+    // const autoIncrement = this.autoIncrementEnabled(tenantId, group);
+
+    // const settingNo = settings.get({ group, key: 'next_number' }, '');
+    // const settingPrefix = settings.get({ group, key: 'number_prefix' }, '');
+
+    // return autoIncrement ? `${settingPrefix}${settingNo}` : '';
+
+    return '1';
+  }
+
+  /**
+   * Increment setting next number.
+   * @param {string} orderGroup - Order group.
+   * @param {string} orderNumber -Order number.
+   */
+  async incrementSettingsNextNumber(group: string) {
+    // const settings = this.tenancy.settings(tenantId);
+    // const settingNo = settings.get({ group, key: 'next_number' });
+    // const autoIncrement = settings.get({ group, key: 'auto_increment' });
+    // // Can't continue if the auto-increment of the service was disabled.
+    // if (!autoIncrement) {
+    //   return;
+    // }
+    // settings.set(
+    //   { group, key: 'next_number' },
+    //   transactionIncrement(settingNo)
+    // );
+    // await settings.save();
+  }
+}

packages/server-nest/src/modules/Branches/integrations/BranchTransactionDTOTransform.ts

@@ -1,35 +1,31 @@
-// import { Service, Inject } from 'typedi';
-// import { omit } from 'lodash';
-// import { BranchesSettings } from '../BranchesSettings';
+import { Inject, Injectable } from '@nestjs/common';
+import { omit } from 'lodash';
+import { BranchesSettingsService } from '../BranchesSettings';
 
-// @Service()
-// export class BranchTransactionDTOTransform {
-//   @Inject()
-//   branchesSettings: BranchesSettings;
+@Injectable()
+export class BranchTransactionDTOTransformer {
+  constructor(private readonly branchesSettings: BranchesSettingsService) {}
 
-//   /**
-//    * Excludes DTO branch id when mutli-warehouses feature is inactive.
-//    * @param   {number} tenantId
-//    * @returns {any}
-//    */
-//   private excludeDTOBranchIdWhenInactive = <T extends { branchId?: number }>(
-//     tenantId: number,
-//     DTO: T
-//   ): Omit<T, 'branchId'> | T => {
-//     const isActive = this.branchesSettings.isMultiBranchesActive(tenantId);
+  /**
+   * Excludes DTO branch id when mutli-warehouses feature is inactive.
+   * @returns {any}
+   */
+  private excludeDTOBranchIdWhenInactive = <T extends { branchId?: number }>(
+    DTO: T,
+  ): Omit<T, 'branchId'> | T => {
+    const isActive = this.branchesSettings.isMultiBranchesActive();
 
-//     return !isActive ? omit(DTO, ['branchId']) : DTO;
-//   };
+    return !isActive ? omit(DTO, ['branchId']) : DTO;
+  };
 
-//   /**
-//    * Transformes the input DTO for branches feature.
-//    * @param   {number} tenantId -
-//    * @param   {T}      DTO -
-//    * @returns {Omit<T, 'branchId'> | T}
-//    */
-//   public transformDTO =
-//     <T extends { branchId?: number }>(tenantId: number) =>
-//     (DTO: T): Omit<T, 'branchId'> | T => {
-//       return this.excludeDTOBranchIdWhenInactive<T>(tenantId, DTO);
-//     };
-// }
+  /**
+   * Transformes the input DTO for branches feature.
+   * @param {T} DTO -
+   * @returns {Omit<T, 'branchId'> | T}
+   */
+  public transformDTO = <T extends { branchId?: number }>(
+    DTO: T,
+  ): Omit<T, 'branchId'> | T => {
+    return this.excludeDTOBranchIdWhenInactive<T>(DTO);
+  };
+}

packages/server-nest/src/modules/Contacts/models/Contact.ts

@@ -0,0 +1,229 @@
+import { Model } from 'objection';
+import { BaseModel } from '@/models/Model';
+
+export class Contact extends BaseModel {
+  contactService: string;
+  contactType: string;
+
+  balance: number;
+  currencyCode: string;
+
+  openingBalance: number;
+  openingBalanceAt: Date;
+
+  salutation?: string;
+  firstName?: string;
+  lastName?: string;
+  companyName?: string;
+
+  displayName: string;
+
+  email?: string;
+  workPhone?: string;
+  personalPhone?: string;
+  website?: string;
+
+  billingAddress1?: string;
+  billingAddress2?: string;
+  billingAddressCity?: string;
+  billingAddressCountry?: string;
+  billingAddressEmail?: string;
+  billingAddressPostcode?: string;
+  billingAddressPhone?: string;
+  billingAddressState?: string;
+
+  shippingAddress1?: string;
+  shippingAddress2?: string;
+  shippingAddressCity?: string;
+  shippingAddressCountry?: string;
+  shippingAddressEmail?: string;
+  shippingAddressPostcode?: string;
+  shippingAddressPhone?: string;
+  shippingAddressState?: string;
+
+  note: string;
+  active: boolean;
+
+  /**
+   * Table name
+   */
+  static get tableName() {
+    return 'contacts';
+  }
+
+  /**
+   * Model timestamps.
+   */
+  get timestamps() {
+    return ['createdAt', 'updatedAt'];
+  }
+
+  /**
+   * Defined virtual attributes.
+   */
+  static get virtualAttributes() {
+    return ['contactNormal', 'closingBalance', 'formattedContactService'];
+  }
+
+  /**
+   * Retrieve the contact normal by the given contact type.
+   */
+  static getContactNormalByType(contactType) {
+    const types = {
+      vendor: 'credit',
+      customer: 'debit',
+    };
+    return types[contactType];
+  }
+
+  /**
+   * Retrieve the contact normal by the given contact service.
+   * @param {string} contactService
+   */
+  static getFormattedContactService(contactService) {
+    const types = {
+      customer: 'Customer',
+      vendor: 'Vendor',
+    };
+    return types[contactService];
+  }
+
+  /**
+   * Retrieve the contact normal.
+   */
+  get contactNormal() {
+    return Contact.getContactNormalByType(this.contactService);
+  }
+
+  /**
+   * Retrieve formatted contact service.
+   */
+  get formattedContactService() {
+    return Contact.getFormattedContactService(this.contactService);
+  }
+
+  /**
+   * Closing balance attribute.
+   */
+  get closingBalance() {
+    return this.balance;
+  }
+
+  /**
+   * Model modifiers.
+   */
+  static get modifiers() {
+    return {
+      filterContactIds(query, customerIds) {
+        query.whereIn('id', customerIds);
+      },
+
+      customer(query) {
+        query.where('contact_service', 'customer');
+      },
+
+      vendor(query) {
+        query.where('contact_service', 'vendor');
+      },
+    };
+  }
+
+  /**
+   * Relationship mapping.
+   */
+  static get relationMappings() {
+    const SaleEstimate = require('models/SaleEstimate');
+    const SaleReceipt = require('models/SaleReceipt');
+    const SaleInvoice = require('models/SaleInvoice');
+    const PaymentReceive = require('models/PaymentReceive');
+    const Bill = require('models/Bill');
+    const BillPayment = require('models/BillPayment');
+    const AccountTransaction = require('models/AccountTransaction');
+
+    return {
+      /**
+       * Contact may has many sales invoices.
+       */
+      salesInvoices: {
+        relation: Model.HasManyRelation,
+        modelClass: SaleInvoice.default,
+        join: {
+          from: 'contacts.id',
+          to: 'sales_invoices.customerId',
+        },
+      },
+
+      /**
+       * Contact may has many sales estimates.
+       */
+      salesEstimates: {
+        relation: Model.HasManyRelation,
+        modelClass: SaleEstimate.default,
+        join: {
+          from: 'contacts.id',
+          to: 'sales_estimates.customerId',
+        },
+      },
+
+      /**
+       * Contact may has many sales receipts.
+       */
+      salesReceipts: {
+        relation: Model.HasManyRelation,
+        modelClass: SaleReceipt.default,
+        join: {
+          from: 'contacts.id',
+          to: 'sales_receipts.customerId',
+        },
+      },
+
+      /**
+       * Contact may has many payments receives.
+       */
+      paymentReceives: {
+        relation: Model.HasManyRelation,
+        modelClass: PaymentReceive.default,
+        join: {
+          from: 'contacts.id',
+          to: 'payment_receives.customerId',
+        },
+      },
+
+      /**
+       * Contact may has many bills.
+       */
+      bills: {
+        relation: Model.HasManyRelation,
+        modelClass: Bill.default,
+        join: {
+          from: 'contacts.id',
+          to: 'bills.vendorId',
+        },
+      },
+
+      /**
+       * Contact may has many bills payments.
+       */
+      billPayments: {
+        relation: Model.HasManyRelation,
+        modelClass: BillPayment.default,
+        join: {
+          from: 'contacts.id',
+          to: 'bills_payments.vendorId',
+        },
+      },
+
+      /**
+       * Contact may has many accounts transactions.
+       */
+      accountsTransactions: {
+        relation: Model.HasManyRelation,
+        modelClass: AccountTransaction.default,
+        join: {
+          from: 'contacts.id',
+          to: 'accounts_transactions.contactId',
+        },
+      },
+    };
+  }
+}

packages/server-nest/src/modules/Customers/models/Customer.ts

@@ -0,0 +1,234 @@
+import { Model, mixin } from 'objection';
+import { BaseModel } from '@/models/Model';
+// import TenantModel from 'models/TenantModel';
+// import PaginationQueryBuilder from './Pagination';
+// import ModelSetting from './ModelSetting';
+// import CustomerSettings from './Customer.Settings';
+// import CustomViewBaseModel from './CustomViewBaseModel';
+// import { DEFAULT_VIEWS } from '@/services/Contacts/Customers/constants';
+// import ModelSearchable from './ModelSearchable';
+
+// class CustomerQueryBuilder extends PaginationQueryBuilder {
+//   constructor(...args) {
+//     super(...args);
+
+//     this.onBuild((builder) => {
+//       if (builder.isFind() || builder.isDelete() || builder.isUpdate()) {
+//         builder.where('contact_service', 'customer');
+//       }
+//     });
+//   }
+// }
+
+export class Customer extends BaseModel{
+  contactService: string;
+  contactType: string;
+
+  balance: number;
+  currencyCode: string;
+
+  openingBalance: number;
+  openingBalanceAt: Date;
+  openingBalanceExchangeRate: number;
+
+  salutation?: string;
+  firstName?: string;
+  lastName?: string;
+  companyName?: string;
+
+  displayName: string;
+
+  email?: string;
+  workPhone?: string;
+  personalPhone?: string;
+  website?: string;
+
+  billingAddress1?: string;
+  billingAddress2?: string;
+  billingAddressCity?: string;
+  billingAddressCountry?: string;
+  billingAddressEmail?: string;
+  billingAddressPostcode?: string;
+  billingAddressPhone?: string;
+  billingAddressState?: string;
+
+  shippingAddress1?: string;
+  shippingAddress2?: string;
+  shippingAddressCity?: string;
+  shippingAddressCountry?: string;
+  shippingAddressEmail?: string;
+  shippingAddressPostcode?: string;
+  shippingAddressPhone?: string;
+  shippingAddressState?: string;
+
+  note: string;
+  active: boolean;
+
+
+  /**
+   * Query builder.
+   */
+  // static get QueryBuilder() {
+  //   return CustomerQueryBuilder;
+  // }
+
+  /**
+   * Table name
+   */
+  static get tableName() {
+    return 'contacts';
+  }
+
+  /**
+   * Model timestamps.
+   */
+  get timestamps() {
+    return ['createdAt', 'updatedAt'];
+  }
+
+  /**
+   * Defined virtual attributes.
+   */
+  static get virtualAttributes() {
+    return ['localOpeningBalance', 'closingBalance', 'contactNormal'];
+  }
+
+  /**
+   * Closing balance attribute.
+   */
+  get closingBalance() {
+    return this.balance;
+  }
+
+  /**
+   * Retrieves the local opening balance.
+   * @returns {number}
+   */
+  get localOpeningBalance() {
+    return this.openingBalance
+      ? this.openingBalance * this.openingBalanceExchangeRate
+      : 0;
+  }
+
+  /**
+   * Retrieve the contact noraml;
+   */
+  get contactNormal() {
+    return 'debit';
+  }
+
+  /**
+   *
+   */
+  get contactAddresses() {
+    return [
+      {
+        mail: this.email,
+        label: this.displayName,
+        primary: true
+      },
+    ].filter((c) => c.mail);
+  }
+
+  /**
+   * Model modifiers.
+   */
+  static get modifiers() {
+    return {
+      /**
+       * Inactive/Active mode.
+       */
+      inactiveMode(query, active = false) {
+        query.where('active', !active);
+      },
+
+      /**
+       * Filters the active customers.
+       */
+      active(query) {
+        query.where('active', 1);
+      },
+      /**
+       * Filters the inactive customers.
+       */
+      inactive(query) {
+        query.where('active', 0);
+      },
+      /**
+       * Filters the customers that have overdue invoices.
+       */
+      overdue(query) {
+        query.select(
+          '*',
+          Customer.relatedQuery('overDueInvoices', query.knex())
+            .count()
+            .as('countOverdue')
+        );
+        query.having('countOverdue', '>', 0);
+      },
+      /**
+       * Filters the unpaid customers.
+       */
+      unpaid(query) {
+        query.whereRaw('`BALANCE` + `OPENING_BALANCE` <> 0');
+      },
+    };
+  }
+
+  /**
+   * Relationship mapping.
+   */
+  // static get relationMappings() {
+  //   const SaleInvoice = require('models/SaleInvoice');
+
+  //   return {
+  //     salesInvoices: {
+  //       relation: Model.HasManyRelation,
+  //       modelClass: SaleInvoice.default,
+  //       join: {
+  //         from: 'contacts.id',
+  //         to: 'sales_invoices.customerId',
+  //       },
+  //     },
+
+  //     overDueInvoices: {
+  //       relation: Model.HasManyRelation,
+  //       modelClass: SaleInvoice.default,
+  //       join: {
+  //         from: 'contacts.id',
+  //         to: 'sales_invoices.customerId',
+  //       },
+  //       filter: (query) => {
+  //         query.modify('overdue');
+  //       },
+  //     },
+  //   };
+  // }
+
+  // static get meta() {
+  //   return CustomerSettings;
+  // }
+
+  // /**
+  //  * Retrieve the default custom views, roles and columns.
+  //  */
+  // static get defaultViews() {
+  //   return DEFAULT_VIEWS;
+  // }
+
+  /**
+   * Model search attributes.
+   */
+  static get searchRoles() {
+    return [
+      { fieldKey: 'display_name', comparator: 'contains' },
+      { condition: 'or', fieldKey: 'first_name', comparator: 'contains' },
+      { condition: 'or', fieldKey: 'last_name', comparator: 'equals' },
+      { condition: 'or', fieldKey: 'company_name', comparator: 'equals' },
+      { condition: 'or', fieldKey: 'email', comparator: 'equals' },
+      { condition: 'or', fieldKey: 'work_phone', comparator: 'equals' },
+      { condition: 'or', fieldKey: 'personal_phone', comparator: 'equals' },
+      { condition: 'or', fieldKey: 'website', comparator: 'equals' },
+    ];
+  }
+}

packages/server-nest/src/modules/Expenses/Expenses.types.ts

@@ -0,0 +1,208 @@
+import { Knex } from 'knex';
+import { Expense } from './models/Expense.model';
+import { SystemUser } from '../System/models/SystemUser';
+import { IFilterRole } from '../DynamicListing/DynamicFilter/DynamicFilter.types';
+// import { ISystemUser } from './User';
+// import { IFilterRole } from './DynamicFilter';
+// import { IAccount } from './Account';
+// import { AttachmentLinkDTO } from './Attachments';
+
+export interface IPaginationMeta {
+  total: number;
+  page: number;
+  pageSize: number;
+}
+
+export interface IExpensesFilter {
+  page: number;
+  pageSize: number;
+  filterRoles?: IFilterRole[];
+  columnSortBy: string;
+  sortOrder: string;
+  viewSlug?: string;
+  filterQuery?: (query: any) => void;
+}
+
+// export interface IExpense {
+//   id: number;
+//   totalAmount: number;
+//   localAmount?: number;
+//   currencyCode: string;
+//   exchangeRate: number;
+//   description?: string;
+//   paymentAccountId: number;
+//   peyeeId?: number;
+//   referenceNo?: string;
+//   publishedAt: Date | null;
+//   userId: number;
+//   paymentDate: Date;
+//   payeeId: number;
+//   landedCostAmount: number;
+//   allocatedCostAmount: number;
+//   unallocatedCostAmount: number;
+//   categories?: IExpenseCategory[];
+//   isPublished: boolean;
+
+//   localLandedCostAmount?: number;
+//   localAllocatedCostAmount?: number;
+//   localUnallocatedCostAmount?: number;
+  
+//   billableAmount: number;
+//   invoicedAmount: number;
+
+//   branchId?: number;
+
+//   createdAt?: Date;
+// }
+
+// export interface IExpenseCategory {
+//   id?: number;
+//   expenseAccountId: number;
+//   index: number;
+//   description: string;
+//   expenseId: number;
+//   amount: number;
+
+//   projectId?: number;
+
+//   allocatedCostAmount: number;
+//   unallocatedCostAmount: number;
+//   landedCost: boolean;
+
+//   expenseAccount?: IAccount;
+// }
+
+export interface IExpenseCommonDTO {
+  currencyCode: string;
+  exchangeRate?: number;
+  description?: string;
+  paymentAccountId: number;
+  peyeeId?: number;
+  referenceNo?: string;
+  publish: boolean;
+  userId: number;
+  paymentDate: Date;
+  payeeId: number;
+  categories: IExpenseCategoryDTO[];
+
+  branchId?: number;
+  // attachments?: AttachmentLinkDTO[];
+}
+
+export interface IExpenseCreateDTO extends IExpenseCommonDTO {}
+export interface IExpenseEditDTO extends IExpenseCommonDTO {}
+
+export interface IExpenseCategoryDTO {
+  id?: number;
+  expenseAccountId: number;
+  index: number;
+  amount: number;
+  description?: string;
+  expenseId: number;
+  landedCost?: boolean;
+  projectId?: number;
+}
+
+// export interface IExpensesService {
+//   newExpense(
+//     tenantid: number,
+//     expenseDTO: IExpenseDTO,
+//     authorizedUser: ISystemUser
+//   ): Promise<IExpense>;
+
+//   editExpense(
+//     tenantid: number,
+//     expenseId: number,
+//     expenseDTO: IExpenseDTO,
+//     authorizedUser: ISystemUser
+//   ): void;
+
+//   publishExpense(
+//     tenantId: number,
+//     expenseId: number,
+//     authorizedUser: ISystemUser
+//   ): Promise<void>;
+
+//   deleteExpense(
+//     tenantId: number,
+//     expenseId: number,
+//     authorizedUser: ISystemUser
+//   ): Promise<void>;
+
+//   getExpensesList(
+//     tenantId: number,
+//     expensesFilter: IExpensesFilter
+//   ): Promise<{
+//     expenses: IExpense[];
+//     pagination: IPaginationMeta;
+//     filterMeta: IFilterMeta;
+//   }>;
+
+//   getExpense(tenantId: number, expenseId: number): Promise<IExpense>;
+// }
+
+export interface IExpenseCreatingPayload {
+  trx: Knex.Transaction;
+  // tenantId: number;
+  expenseDTO: IExpenseCreateDTO;
+}
+
+export interface IExpenseEventEditingPayload {
+  // tenantId: number;
+  oldExpense: Expense;
+  expenseDTO: IExpenseEditDTO;
+  trx: Knex.Transaction;
+}
+
+export interface IExpenseCreatedPayload {
+  // tenantId: number;
+  expenseId: number;
+  // authorizedUser: ISystemUser;
+  expense: Expense;
+  expenseDTO: IExpenseCreateDTO;
+  trx?: Knex.Transaction;
+}
+
+export interface IExpenseEventEditPayload {
+  // tenantId: number;
+  expenseId: number;
+  expense: Expense;
+  expenseDTO: IExpenseEditDTO;
+  authorizedUser: SystemUser;
+  oldExpense: Expense;
+  trx: Knex.Transaction;
+}
+
+export interface IExpenseEventDeletePayload {
+  // tenantId: number;
+  expenseId: number;
+  authorizedUser: SystemUser;
+  oldExpense: Expense;
+  trx: Knex.Transaction;
+}
+
+export interface IExpenseDeletingPayload {
+  trx: Knex.Transaction;
+  // tenantId: number;
+  oldExpense: Expense;
+}
+export interface IExpenseEventPublishedPayload {
+  // tenantId: number;
+  expenseId: number;
+  oldExpense: Expense;
+  expense: Expense;
+  authorizedUser: SystemUser;
+  trx: Knex.Transaction;
+}
+
+export interface IExpensePublishingPayload {
+  trx: Knex.Transaction;
+  oldExpense: Expense;
+  // tenantId: number;
+}
+export enum ExpenseAction {
+  Create = 'Create',
+  Edit = 'Edit',
+  Delete = 'Delete',
+  View = 'View',
+}

packages/server-nest/src/modules/Expenses/subscribers/ExpenseGL.ts

@@ -1,113 +1,113 @@
-import * as R from 'ramda';
-import {
-  AccountNormal,
-  IExpenseCategory,
-  ILedger,
-  ILedgerEntry,
-} from '@/interfaces';
-import Ledger from '../Accounting/Ledger';
+// import * as R from 'ramda';
+// import {
+//   AccountNormal,
+//   IExpenseCategory,
+//   ILedger,
+//   ILedgerEntry,
+// } from '@/interfaces';
+// import Ledger from '../Accounting/Ledger';
 
-export class ExpenseGL {
-  private expense: any;
+// export class ExpenseGL {
+//   private expense: any;
 
-  /**
-   * Constructor method.
-   */
-  constructor(expense: any) {
-    this.expense = expense;
-  }
+//   /**
+//    * Constructor method.
+//    */
+//   constructor(expense: any) {
+//     this.expense = expense;
+//   }
 
-  /**
-   * Retrieves the expense GL common entry.
-   * @param {IExpense} expense
-   * @returns {Partial<ILedgerEntry>}
-   */
-  private getExpenseGLCommonEntry = (): Partial<ILedgerEntry> => {
-    return {
-      currencyCode: this.expense.currencyCode,
-      exchangeRate: this.expense.exchangeRate,
+//   /**
+//    * Retrieves the expense GL common entry.
+//    * @param {IExpense} expense
+//    * @returns {Partial<ILedgerEntry>}
+//    */
+//   private getExpenseGLCommonEntry = (): Partial<ILedgerEntry> => {
+//     return {
+//       currencyCode: this.expense.currencyCode,
+//       exchangeRate: this.expense.exchangeRate,
 
-      transactionType: 'Expense',
-      transactionId: this.expense.id,
+//       transactionType: 'Expense',
+//       transactionId: this.expense.id,
 
-      date: this.expense.paymentDate,
-      userId: this.expense.userId,
+//       date: this.expense.paymentDate,
+//       userId: this.expense.userId,
 
-      debit: 0,
-      credit: 0,
+//       debit: 0,
+//       credit: 0,
 
-      branchId: this.expense.branchId,
-    };
-  };
+//       branchId: this.expense.branchId,
+//     };
+//   };
 
-  /**
-   * Retrieves the expense GL payment entry.
-   * @param {IExpense} expense
-   * @returns {ILedgerEntry}
-   */
-  private getExpenseGLPaymentEntry = (): ILedgerEntry => {
-    const commonEntry = this.getExpenseGLCommonEntry();
+//   /**
+//    * Retrieves the expense GL payment entry.
+//    * @param {IExpense} expense
+//    * @returns {ILedgerEntry}
+//    */
+//   private getExpenseGLPaymentEntry = (): ILedgerEntry => {
+//     const commonEntry = this.getExpenseGLCommonEntry();
 
-    return {
-      ...commonEntry,
-      credit: this.expense.localAmount,
-      accountId: this.expense.paymentAccountId,
-      accountNormal:
-        this.expense?.paymentAccount?.accountNormal === 'debit'
-          ? AccountNormal.DEBIT
-          : AccountNormal.CREDIT,
-      index: 1,
-    };
-  };
+//     return {
+//       ...commonEntry,
+//       credit: this.expense.localAmount,
+//       accountId: this.expense.paymentAccountId,
+//       accountNormal:
+//         this.expense?.paymentAccount?.accountNormal === 'debit'
+//           ? AccountNormal.DEBIT
+//           : AccountNormal.CREDIT,
+//       index: 1,
+//     };
+//   };
 
-  /**
-   * Retrieves the expense GL category entry.
-   * @param {IExpense} expense -
-   * @param {IExpenseCategory} expenseCategory -
-   * @param {number} index
-   * @returns {ILedgerEntry}
-   */
-  private getExpenseGLCategoryEntry = R.curry(
-    (category: IExpenseCategory, index: number): ILedgerEntry => {
-      const commonEntry = this.getExpenseGLCommonEntry();
-      const localAmount = category.amount * this.expense.exchangeRate;
+//   /**
+//    * Retrieves the expense GL category entry.
+//    * @param {IExpense} expense -
+//    * @param {IExpenseCategory} expenseCategory -
+//    * @param {number} index
+//    * @returns {ILedgerEntry}
+//    */
+//   private getExpenseGLCategoryEntry = R.curry(
+//     (category: IExpenseCategory, index: number): ILedgerEntry => {
+//       const commonEntry = this.getExpenseGLCommonEntry();
+//       const localAmount = category.amount * this.expense.exchangeRate;
 
-      return {
-        ...commonEntry,
-        accountId: category.expenseAccountId,
-        accountNormal: AccountNormal.DEBIT,
-        debit: localAmount,
-        note: category.description,
-        index: index + 2,
-        projectId: category.projectId,
-      };
-    }
-  );
+//       return {
+//         ...commonEntry,
+//         accountId: category.expenseAccountId,
+//         accountNormal: AccountNormal.DEBIT,
+//         debit: localAmount,
+//         note: category.description,
+//         index: index + 2,
+//         projectId: category.projectId,
+//       };
+//     }
+//   );
 
-  /**
-   * Retrieves the expense GL entries.
-   * @param {IExpense} expense
-   * @returns {ILedgerEntry[]}
-   */
-  public getExpenseGLEntries = (): ILedgerEntry[] => {
-    const getCategoryEntry = this.getExpenseGLCategoryEntry();
+//   /**
+//    * Retrieves the expense GL entries.
+//    * @param {IExpense} expense
+//    * @returns {ILedgerEntry[]}
+//    */
+//   public getExpenseGLEntries = (): ILedgerEntry[] => {
+//     const getCategoryEntry = this.getExpenseGLCategoryEntry();
 
-    const paymentEntry = this.getExpenseGLPaymentEntry();
-    const categoryEntries = this.expense.categories.map(getCategoryEntry);
+//     const paymentEntry = this.getExpenseGLPaymentEntry();
+//     const categoryEntries = this.expense.categories.map(getCategoryEntry);
 
-    return [paymentEntry, ...categoryEntries];
-  };
+//     return [paymentEntry, ...categoryEntries];
+//   };
 
-  /**
-   * Retrieves the given expense ledger.
-   * @param {IExpense} expense
-   * @returns {ILedger}
-   */
-  public getExpenseLedger = (): ILedger => {
-    const entries = this.getExpenseGLEntries();
+//   /**
+//    * Retrieves the given expense ledger.
+//    * @param {IExpense} expense
+//    * @returns {ILedger}
+//    */
+//   public getExpenseLedger = (): ILedger => {
+//     const entries = this.getExpenseGLEntries();
 
-    console.log(entries, 'entries');
+//     console.log(entries, 'entries');
 
-    return new Ledger(entries);
-  };
-}
+//     return new Ledger(entries);
+//   };
+// }

packages/server-nest/src/modules/Expenses/subscribers/ExpenseGLEntries.service.ts

@@ -0,0 +1,42 @@
+// import { Knex } from 'knex';
+// import { ExpenseGL } from './ExpenseGL';
+// import { Inject, Injectable } from '@nestjs/common';
+// import { Expense } from '../models/Expense.model';
+
+// @Injectable()
+// export class ExpenseGLEntries {
+//   constructor(
+//     @Inject(Expense.name)
+//     private readonly expense: typeof Expense,
+//   ) {}
+//   /**
+//    * Retrieves the expense G/L of the given id.
+//    * @param {number} expenseId
+//    * @param {Knex.Transaction} trx
+//    * @returns {Promise<ILedger>}
+//    */
+//   public getExpenseLedgerById = async (
+//     expenseId: number,
+//     trx?: Knex.Transaction,
+//   ): Promise<ILedger> => {
+//     const expense = await this.expense
+//       .query(trx)
+//       .findById(expenseId)
+//       .withGraphFetched('categories')
+//       .withGraphFetched('paymentAccount')
+//       .throwIfNotFound();
+
+//     return this.getExpenseLedger(expense);
+//   };
+
+//   /**
+//    * Retrieves the given expense ledger.
+//    * @param {IExpense} expense
+//    * @returns {ILedger}
+//    */
+//   public getExpenseLedger = (expense: Expense): ILedger => {
+//     const expenseGL = new ExpenseGL(expense);
+
+//     return expenseGL.getExpenseLedger();
+//   };
+// }

packages/server-nest/src/modules/Expenses/subscribers/ExpenseGLEntries.subscriber.ts

@@ -0,0 +1,77 @@
+// import {
+//   IExpenseCreatedPayload,
+//   IExpenseEventDeletePayload,
+//   IExpenseEventEditPayload,
+//   IExpenseEventPublishedPayload,
+// } from '../Expenses.types';
+// import { ExpenseGLEntriesStorage } from './ExpenseGLEntriesStorage';
+// import { Injectable } from '@nestjs/common';
+// import { OnEvent } from '@nestjs/event-emitter';
+// import { events } from '@/common/events/events';
+
+// @Injectable()
+// export class ExpensesWriteGLSubscriber {
+//   /**
+//    * @param {ExpenseGLEntriesStorage} expenseGLEntries -
+//    */
+//   constructor(private readonly expenseGLEntries: ExpenseGLEntriesStorage) {}
+
+//   /**
+//    * Handles the writing journal entries once the expense created.
+//    * @param {IExpenseCreatedPayload} payload -
+//    */
+//   @OnEvent(events.expenses.onCreated)
+//   public async handleWriteGLEntriesOnceCreated({
+//     expense,
+//     trx,
+//   }: IExpenseCreatedPayload) {
+//     // In case expense published, write journal entries.
+//     if (!expense.publishedAt) return;
+
+//     await this.expenseGLEntries.writeExpenseGLEntries(expense.id, trx);
+//   }
+
+//   /**
+//    * Handle writing expense journal entries once the expense edited.
+//    * @param {IExpenseEventEditPayload} payload -
+//    */
+//   @OnEvent(events.expenses.onEdited)
+//   public async handleRewriteGLEntriesOnceEdited({
+//     expenseId,
+//     expense,
+//     authorizedUser,
+//     trx,
+//   }: IExpenseEventEditPayload) {
+//     // Cannot continue if the expense is not published.
+//     if (!expense.publishedAt) return;
+
+//     await this.expenseGLEntries.rewriteExpenseGLEntries(expense.id, trx);
+//   }
+
+//   /**
+//    * Reverts expense journal entries once the expense deleted.
+//    * @param {IExpenseEventDeletePayload} payload -
+//    */
+//   @OnEvent(events.expenses.onDeleted)
+//   public async handleRevertGLEntriesOnceDeleted({
+//     expenseId,
+//     trx,
+//   }: IExpenseEventDeletePayload) {
+//     await this.expenseGLEntries.revertExpenseGLEntries(expenseId, trx);
+//   }
+
+//   /**
+//    * Handles writing expense journal once the expense publish.
+//    * @param {IExpenseEventPublishedPayload} payload -
+//    */
+//   @OnEvent(events.expenses.onPublished)
+//   public async handleWriteGLEntriesOncePublished({
+//     expense,
+//     trx,
+//   }: IExpenseEventPublishedPayload) {
+//     // In case expense published, write journal entries.
+//     if (!expense.publishedAt) return;
+
+//     await this.expenseGLEntries.rewriteExpenseGLEntries(expense.id, trx);
+//   }
+// }

packages/server-nest/src/modules/Expenses/subscribers/ExpenseGLEntriesService.ts

@@ -1,45 +0,0 @@
-import { Knex } from 'knex';
-import { Inject, Service } from 'typedi';
-import { IExpense, ILedger } from '@/interfaces';
-import { ExpenseGL } from './ExpenseGL';
-import HasTenancyService from '../Tenancy/TenancyService';
-
-@Service()
-export class ExpenseGLEntries {
-  @Inject()
-  private tenancy: HasTenancyService;
-
-  /**
-   * Retrieves the expense G/L of the given id.
-   * @param {number} tenantId
-   * @param {number} expenseId
-   * @param {Knex.Transaction} trx
-   * @returns {Promise<ILedger>}
-   */
-  public getExpenseLedgerById = async (
-    tenantId: number,
-    expenseId: number,
-    trx?: Knex.Transaction
-  ): Promise<ILedger> => {
-    const { Expense } = await this.tenancy.models(tenantId);
-
-    const expense = await Expense.query(trx)
-      .findById(expenseId)
-      .withGraphFetched('categories')
-      .withGraphFetched('paymentAccount')
-      .throwIfNotFound();
-
-    return this.getExpenseLedger(expense);
-  };
-
-  /**
-   * Retrieves the given expense ledger.
-   * @param {IExpense} expense
-   * @returns {ILedger}
-   */
-  public getExpenseLedger = (expense: IExpense): ILedger => {
-    const expenseGL = new ExpenseGL(expense);
-
-    return expenseGL.getExpenseLedger();
-  };
-}

packages/server-nest/src/modules/Expenses/subscribers/ExpenseGLEntriesStorage.ts

@@ -1,72 +1,67 @@
-import { Knex } from 'knex';
-import { Service, Inject } from 'typedi';
-import LedgerStorageService from '@/services/Accounting/LedgerStorageService';
-import HasTenancyService from '@/services/Tenancy/TenancyService';
-import { ExpenseGLEntries } from './ExpenseGLEntriesService';
+// import { Knex } from 'knex';
+// import { ExpenseGLEntries } from './ExpenseGLEntries.service';
+// import { Injectable } from '@nestjs/common';
 
-@Service()
-export class ExpenseGLEntriesStorage {
-  @Inject()
-  private expenseGLEntries: ExpenseGLEntries;
+// @Injectable()
+// export class ExpenseGLEntriesStorage {
+//   /**
+//    * @param {ExpenseGLEntries} expenseGLEntries 
+//    * @param {LedgerStorageService} ledgerStorage 
+//    */
+//   constructor(
+//     private readonly expenseGLEntries: ExpenseGLEntries,
+//     private readonly ledgerStorage: LedgerStorageService,
+//   ) {}
 
-  @Inject()
-  private ledgerStorage: LedgerStorageService;
+//   /**
+//    * Writes the expense GL entries.
+//    * @param {number} tenantId
+//    * @param {number} expenseId
+//    * @param {Knex.Transaction} trx
+//    */
+//   public writeExpenseGLEntries = async (
+//     expenseId: number,
+//     trx?: Knex.Transaction,
+//   ) => {
+//     // Retrieves the given expense ledger.
+//     const expenseLedger = await this.expenseGLEntries.getExpenseLedgerById(
+//       expenseId,
+//       trx,
+//     );
+//     // Commits the expense ledger entries.
+//     await this.ledgerStorage.commit(expenseLedger, trx);
+//   };
 
-  /**
-   * Writes the expense GL entries.
-   * @param {number} tenantId
-   * @param {number} expenseId
-   * @param {Knex.Transaction} trx
-   */
-  public writeExpenseGLEntries = async (
-    tenantId: number,
-    expenseId: number,
-    trx?: Knex.Transaction
-  ) => {
-    // Retrieves the given expense ledger.
-    const expenseLedger = await this.expenseGLEntries.getExpenseLedgerById(
-      tenantId,
-      expenseId,
-      trx
-    );
-    // Commits the expense ledger entries.
-    await this.ledgerStorage.commit(tenantId, expenseLedger, trx);
-  };
+//   /**
+//    * Reverts the given expense GL entries.
+//    * @param {number} tenantId
+//    * @param {number} expenseId
+//    * @param {Knex.Transaction} trx
+//    */
+//   public revertExpenseGLEntries = async (
+//     expenseId: number,
+//     trx?: Knex.Transaction,
+//   ) => {
+//     await this.ledgerStorage.deleteByReference(
+//       expenseId,
+//       'Expense',
+//       trx,
+//     );
+//   };
 
-  /**
-   * Reverts the given expense GL entries.
-   * @param {number} tenantId
-   * @param {number} expenseId
-   * @param {Knex.Transaction} trx
-   */
-  public revertExpenseGLEntries = async (
-    tenantId: number,
-    expenseId: number,
-    trx?: Knex.Transaction
-  ) => {
-    await this.ledgerStorage.deleteByReference(
-      tenantId,
-      expenseId,
-      'Expense',
-      trx
-    );
-  };
+//   /**
+//    * Rewrites the expense GL entries.
+//    * @param {number} expenseId
+//    * @param {Knex.Transaction} trx
+//    */
+//   public rewriteExpenseGLEntries = async (
+//     expenseId: number,
+//     trx?: Knex.Transaction,
+//   ) => {
+//     // Reverts the expense GL entries.
+//     await this.revertExpenseGLEntries(expenseId, trx);
 
-  /**
-   * Rewrites the expense GL entries.
-   * @param {number} tenantId
-   * @param {number} expenseId
-   * @param {Knex.Transaction} trx
-   */
-  public rewriteExpenseGLEntries = async (
-    tenantId: number,
-    expenseId: number,
-    trx?: Knex.Transaction
-  ) => {
-    // Reverts the expense GL entries.
-    await this.revertExpenseGLEntries(tenantId, expenseId, trx);
-
-    // Writes the expense GL entries.
-    await this.writeExpenseGLEntries(tenantId, expenseId, trx);
-  };
-}
+//     // Writes the expense GL entries.
+//     await this.writeExpenseGLEntries(expenseId, trx);
+//   };
+// }

packages/server-nest/src/modules/Expenses/subscribers/ExpenseGLEntriesSubscriber.ts

@@ -1,117 +0,0 @@
-import { Inject, Service } from 'typedi';
-import events from '@/subscribers/events';
-import TenancyService from '@/services/Tenancy/TenancyService';
-import {
-  IExpenseCreatedPayload,
-  IExpenseEventDeletePayload,
-  IExpenseEventEditPayload,
-  IExpenseEventPublishedPayload,
-} from '@/interfaces';
-import { ExpenseGLEntriesStorage } from './ExpenseGLEntriesStorage';
-
-@Service()
-export class ExpensesWriteGLSubscriber {
-  @Inject()
-  private tenancy: TenancyService;
-
-  @Inject()
-  private expenseGLEntries: ExpenseGLEntriesStorage;
-
-  /**
-   * Attaches events with handlers.
-   * @param bus
-   */
-  public attach(bus) {
-    bus.subscribe(
-      events.expenses.onCreated,
-      this.handleWriteGLEntriesOnceCreated
-    );
-    bus.subscribe(
-      events.expenses.onEdited,
-      this.handleRewriteGLEntriesOnceEdited
-    );
-    bus.subscribe(
-      events.expenses.onDeleted,
-      this.handleRevertGLEntriesOnceDeleted
-    );
-    bus.subscribe(
-      events.expenses.onPublished,
-      this.handleWriteGLEntriesOncePublished
-    );
-  }
-
-  /**
-   * Handles the writing journal entries once the expense created.
-   * @param {IExpenseCreatedPayload} payload -
-   */
-  public handleWriteGLEntriesOnceCreated = async ({
-    expense,
-    tenantId,
-    trx,
-  }: IExpenseCreatedPayload) => {
-    // In case expense published, write journal entries.
-    if (!expense.publishedAt) return;
-
-    await this.expenseGLEntries.writeExpenseGLEntries(
-      tenantId,
-      expense.id,
-      trx
-    );
-  };
-
-  /**
-   * Handle writing expense journal entries once the expense edited.
-   * @param {IExpenseEventEditPayload} payload -
-   */
-  public handleRewriteGLEntriesOnceEdited = async ({
-    expenseId,
-    tenantId,
-    expense,
-    authorizedUser,
-    trx,
-  }: IExpenseEventEditPayload) => {
-    // Cannot continue if the expense is not published.
-    if (!expense.publishedAt) return;
-
-    await this.expenseGLEntries.rewriteExpenseGLEntries(
-      tenantId,
-      expense.id,
-      trx
-    );
-  };
-
-  /**
-   * Reverts expense journal entries once the expense deleted.
-   * @param {IExpenseEventDeletePayload} payload -
-   */
-  public handleRevertGLEntriesOnceDeleted = async ({
-    expenseId,
-    tenantId,
-    trx,
-  }: IExpenseEventDeletePayload) => {
-    await this.expenseGLEntries.revertExpenseGLEntries(
-      tenantId,
-      expenseId,
-      trx
-    );
-  };
-
-  /**
-   * Handles writing expense journal once the expense publish.
-   * @param {IExpenseEventPublishedPayload} payload -
-   */
-  public handleWriteGLEntriesOncePublished = async ({
-    tenantId,
-    expense,
-    trx,
-  }: IExpenseEventPublishedPayload) => {
-    // In case expense published, write journal entries.
-    if (!expense.publishedAt) return;
-
-    await this.expenseGLEntries.rewriteExpenseGLEntries(
-      tenantId,
-      expense.id,
-      trx
-    );
-  };
-}

packages/server-nest/src/modules/Items/ItemsEntries.service.ts

@@ -0,0 +1,252 @@
+import { Knex } from 'knex';
+import { sumBy, difference, map } from 'lodash';
+import { Inject, Injectable } from '@nestjs/common';
+import { Item } from './models/Item';
+import { ItemEntry } from '../TransactionItemEntry/models/ItemEntry';
+import { ServiceError } from './ServiceError';
+import { IItemEntryDTO } from '../TransactionItemEntry/ItemEntry.types';
+
+const ERRORS = {
+  ITEMS_NOT_FOUND: 'ITEMS_NOT_FOUND',
+  ENTRIES_IDS_NOT_FOUND: 'ENTRIES_IDS_NOT_FOUND',
+  NOT_PURCHASE_ABLE_ITEMS: 'NOT_PURCHASE_ABLE_ITEMS',
+  NOT_SELL_ABLE_ITEMS: 'NOT_SELL_ABLE_ITEMS',
+};
+
+@Injectable()
+export class ItemsEntriesService {
+  /**
+   * @param {typeof Item} itemModel - Item model.
+   * @param {typeof ItemEntry} itemEntryModel - Item entry model.
+   */
+  constructor(
+    @Inject(Item.name) private readonly itemModel: typeof Item,
+    @Inject(ItemEntry.name) private readonly itemEntryModel: typeof ItemEntry,
+  ) {}
+
+  /**
+   * Retrieve the inventory items entries of the reference id and type.
+   * @param {string} referenceType - Reference type.
+   * @param {number} referenceId - Reference id.
+   * @return {Promise<IItemEntry[]>}
+   */
+  public async getInventoryEntries(
+    referenceType: string,
+    referenceId: number,
+  ): Promise<ItemEntry[]> {
+    const itemsEntries = await this.itemEntryModel
+      .query()
+      .where('reference_type', referenceType)
+      .where('reference_id', referenceId);
+
+    const inventoryItems = await this.itemModel
+      .query()
+      .whereIn('id', map(itemsEntries, 'itemId'))
+      .where('type', 'inventory');
+
+    const inventoryItemsIds = map(inventoryItems, 'id');
+
+    return itemsEntries.filter(
+      (itemEntry) => inventoryItemsIds.indexOf(itemEntry.itemId) !== -1,
+    );
+  }
+
+  /**
+   * Filter the given entries to inventory entries.
+   * @param {IItemEntry[]} entries - Items entries.
+   * @param {Knex.Transaction} trx - Knex transaction.
+   * @returns {Promise<IItemEntry[]>}
+   */
+  public async filterInventoryEntries(
+    entries: ItemEntry[],
+    trx?: Knex.Transaction,
+  ): Promise<ItemEntry[]> {
+    const entriesItemsIds = entries.map((e) => e.itemId);
+
+    const inventoryItems = await this.itemModel
+      .query(trx)
+      .whereIn('id', entriesItemsIds)
+      .where('type', 'inventory');
+
+    return entries.filter((entry) =>
+      inventoryItems.some((item) => item.id === entry.itemId),
+    );
+  }
+
+  /**
+   * Validates the entries items ids.
+   * @param {IItemEntryDTO[]} itemEntries - Items entries.
+   * @returns {Promise<Item[]>}
+   */
+  public async validateItemsIdsExistance(itemEntries: IItemEntryDTO[]) {
+    const itemsIds = itemEntries.map((e) => e.itemId);
+
+    const foundItems = await this.itemModel.query().whereIn('id', itemsIds);
+
+    const foundItemsIds = foundItems.map((item: Item) => item.id);
+    const notFoundItemsIds = difference(itemsIds, foundItemsIds);
+
+    if (notFoundItemsIds.length > 0) {
+      throw new ServiceError(ERRORS.ITEMS_NOT_FOUND);
+    }
+    return foundItems;
+  }
+
+  /**
+   * Validates the entries ids existance on the storage.
+   * @param {number} referenceId -
+   * @param {string} referenceType -
+   * @param {IItemEntryDTO[]} entries -
+   */
+  public async validateEntriesIdsExistance(
+    referenceId: number,
+    referenceType: string,
+    billEntries: IItemEntryDTO[],
+  ) {
+    const entriesIds = billEntries
+      .filter((e: ItemEntry) => e.id)
+      .map((e: ItemEntry) => e.id);
+
+    const storedEntries = await this.itemEntryModel
+      .query()
+      .whereIn('reference_id', [referenceId])
+      .whereIn('reference_type', [referenceType]);
+
+    const storedEntriesIds = storedEntries.map((entry) => entry.id);
+    const notFoundEntriesIds = difference(entriesIds, storedEntriesIds);
+
+    if (notFoundEntriesIds.length > 0) {
+      throw new ServiceError(ERRORS.ENTRIES_IDS_NOT_FOUND);
+    }
+  }
+
+  /**
+   * Validate the entries items that not purchase-able.
+   * @param {IItemEntryDTO[]} itemEntries -
+   */
+  public async validateNonPurchasableEntriesItems(
+    itemEntries: IItemEntryDTO[],
+  ) {
+    const itemsIds = itemEntries.map((e: IItemEntryDTO) => e.itemId);
+    const purchasbleItems = await this.itemModel
+      .query()
+      .where('purchasable', true)
+      .whereIn('id', itemsIds);
+
+    const purchasbleItemsIds = purchasbleItems.map((item: Item) => item.id);
+    const notPurchasableItems = difference(itemsIds, purchasbleItemsIds);
+
+    if (notPurchasableItems.length > 0) {
+      throw new ServiceError(ERRORS.NOT_PURCHASE_ABLE_ITEMS);
+    }
+  }
+
+  /**
+   * Validate the entries items that not sell-able.
+   * @param {IItemEntryDTO[]} itemEntries -
+   */
+  public async validateNonSellableEntriesItems(itemEntries: IItemEntryDTO[]) {
+    const itemsIds = itemEntries.map((e: IItemEntryDTO) => e.itemId);
+
+    const sellableItems = await this.itemModel
+      .query()
+      .where('sellable', true)
+      .whereIn('id', itemsIds);
+
+    const sellableItemsIds = sellableItems.map((item: Item) => item.id);
+    const nonSellableItems = difference(itemsIds, sellableItemsIds);
+
+    if (nonSellableItems.length > 0) {
+      throw new ServiceError(ERRORS.NOT_SELL_ABLE_ITEMS);
+    }
+  }
+
+  /**
+   * Changes items quantity from the given items entries the new and old onces.
+   * @param {IItemEntry[]} entries - Items entries.
+   * @param {IItemEntry[]} oldEntries - Old items entries.
+   */
+  public async changeItemsQuantity(
+    entries: ItemEntry[],
+    oldEntries?: ItemEntry[],
+  ): Promise<void> {
+    const opers = [];
+
+    // const diffEntries = entriesAmountDiff(
+    //   entries,
+    //   oldEntries,
+    //   'quantity',
+    //   'itemId',
+    // );
+    // diffEntries.forEach((entry: ItemEntry) => {
+    //   const changeQuantityOper = this.itemRepository.changeNumber(
+    //     { id: entry.itemId, type: 'inventory' },
+    //     'quantityOnHand',
+    //     entry.quantity,
+    //   );
+    //   opers.push(changeQuantityOper);
+    // });
+    // await Promise.all(opers);
+  }
+
+  /**
+   * Increment items quantity from the given items entries.
+   * @param {IItemEntry[]} entries - Items entries.
+   */
+  public async incrementItemsEntries(entries: ItemEntry[]): Promise<void> {
+    return this.changeItemsQuantity(entries);
+  }
+
+  /**
+   * Decrement items quantity from the given items entries.
+   * @param {IItemEntry[]} entries - Items entries.
+   */
+  public async decrementItemsQuantity(entries: ItemEntry[]): Promise<void> {
+    // return this.changeItemsQuantity(
+    //   entries.map((entry) => ({
+    //     ...entry,
+    //     quantity: entry.quantity * -1,
+    //   })),
+    // );
+  }
+
+  /**
+   * Sets the cost/sell accounts to the invoice entries.
+   */
+  public setItemsEntriesDefaultAccounts() {
+    return async (entries: ItemEntry[]) => {
+      const entriesItemsIds = entries.map((e) => e.itemId);
+      const items = await this.itemModel.query().whereIn('id', entriesItemsIds);
+
+      return entries.map((entry) => {
+        const item = items.find((i) => i.id === entry.itemId);
+
+        return {
+          ...entry,
+          sellAccountId: entry.sellAccountId || item.sellAccountId,
+          ...(item.type === 'inventory' && {
+            costAccountId: entry.costAccountId || item.costAccountId,
+          }),
+        };
+      });
+    };
+  }
+
+  /**
+   * Retrieve the total items entries.
+   * @param {ItemEntry[]} entries - Items entries.
+   * @returns {number}
+   */
+  public getTotalItemsEntries(entries: ItemEntry[]): number {
+    return sumBy(entries, (e) => ItemEntry.calcAmount(e));
+  }
+
+  /**
+   * Retrieve the non-zero tax items entries.
+   * @param {ItemEntry[]} entries -
+   * @returns {ItemEntry[]}
+   */
+  public getNonZeroEntries(entries: ItemEntry[]): ItemEntry[] {
+    return entries.filter((e) => e.taxRate > 0);
+  }
+}

packages/server-nest/src/modules/Items/ServiceError.ts

@@ -1,13 +1,19 @@
+import { HttpStatus } from '@nestjs/common';
 
-export class ServiceError {
-    errorType: string;
-    message: string;
-    payload: any;
-  
-    constructor(errorType: string, message?: string, payload?: any) {
-      this.errorType = errorType;
-      this.message = message || null;
-  
-      this.payload = payload;
-    }
-  }
+export class ServiceError extends Error {
+  errorType: string;
+  message: string;
+  payload: any;
+
+  constructor(errorType: string, message?: string, payload?: any) {
+    super(message);
+
+    this.errorType = errorType;
+    this.message = message || null;
+    this.payload = payload;
+  }
+
+  getStatus(): HttpStatus {
+    return HttpStatus.INTERNAL_SERVER_ERROR;
+  }
+}

packages/server-nest/src/modules/Items/models/Item.ts

@@ -21,6 +21,13 @@ export class Item extends BaseModel {
   public readonly costAccountId: number;
   public readonly inventoryAccountId: number;
   public readonly categoryId: number;
+  public readonly pictureUri: string;
+  public readonly sellAccountId: number;
+  public readonly sellDescription: string;
+  public readonly purchaseDescription: string;
+  public readonly landedCost: boolean;
+  public readonly note: string;
+  public readonly userId: number;
 
   public readonly warehouse!: Warehouse;
 

packages/server-nest/src/modules/PdfTemplate/BrandingTemplateDTOTransformer.ts

@@ -1,37 +1,40 @@
-// import { Inject, Service } from 'typedi';
-// import { isNil } from 'lodash';
-// import HasTenancyService from '../Tenancy/TenancyService';
+import { Inject, Injectable } from '@nestjs/common';
+import { isNil } from 'lodash';
+import { PdfTemplateModel } from './models/PdfTemplate';
 
-// @Service()
-// export class BrandingTemplateDTOTransformer {
-//   @Inject()
-//   private tenancy: HasTenancyService;
+@Injectable()
+export class BrandingTemplateDTOTransformer {
+  /**
+   * @param {PdfTemplateModel} - Pdf template model.
+   */
+  constructor(
+    @Inject(PdfTemplateModel.name)
+    private readonly pdfTemplate: typeof PdfTemplateModel,
+  ) {}
 
-//   /**
-//    * Associates the default branding template id.
-//    * @param {number} tenantId
-//    * @param {string} resource
-//    * @param {Record<string, any>} object
-//    * @param {string} attributeName
-//    * @returns
-//    */
-//   public assocDefaultBrandingTemplate =
-//     (tenantId: number, resource: string) =>
-//     async (object: Record<string, any>) => {
-//       const { PdfTemplate } = this.tenancy.models(tenantId);
-//       const attributeName = 'pdfTemplateId';
+  /**
+   * Associates the default branding template id.
+   * @param {string} resource - Resource name.
+   * @param {Record<string, any>} object - 
+   * @param {string} attributeName
+   * @returns
+   */
+  public assocDefaultBrandingTemplate =
+    (resource: string) => async (object: Record<string, any>) => {
+      const attributeName = 'pdfTemplateId';
 
-//       const defaultTemplate = await PdfTemplate.query()
-//         .modify('default')
-//         .findOne({ resource });
+      const defaultTemplate = await this.pdfTemplate
+        .query()
+        .modify('default')
+        .findOne({ resource });
 
-//       // If the default template is not found OR the given object has no defined template id.
-//       if (!defaultTemplate || !isNil(object[attributeName])) {
-//         return object;
-//       }
-//       return {
-//         ...object,
-//         [attributeName]: defaultTemplate.id,
-//       };
-//     };
-// }
+      // If the default template is not found OR the given object has no defined template id.
+      if (!defaultTemplate || !isNil(object[attributeName])) {
+        return object;
+      }
+      return {
+        ...object,
+        [attributeName]: defaultTemplate.id,
+      };
+    };
+}

packages/server-nest/src/modules/SaleEstimates/SaleEstimates.application.ts

@@ -0,0 +1,178 @@
+import { CreateSaleEstimate } from './commands/CreateSaleEstimate.service';
+import {
+  // IFilterMeta,
+  // IPaginationMeta,
+  // IPaymentReceivedSmsDetails,
+  ISaleEstimateDTO,
+  // ISalesEstimatesFilter,
+  // SaleEstimateMailOptions,
+  // SaleEstimateMailOptionsDTO,
+} from './types/SaleEstimates.types';
+import { EditSaleEstimate } from './commands/EditSaleEstimate.service';
+import { DeleteSaleEstimate } from './commands/DeleteSaleEstimate.service';
+import { GetSaleEstimate } from './queries/GetSaleEstimate.service';
+// import { GetSaleEstimates } from './queries/GetSaleEstimates';
+import { DeliverSaleEstimateService } from './commands/DeliverSaleEstimate.service';
+import { ApproveSaleEstimateService } from './commands/ApproveSaleEstimate.service';
+import { RejectSaleEstimateService } from './commands/RejectSaleEstimate.service';
+// import { SaleEstimateNotifyBySms } from './commands/SaleEstimateSmsNotify';
+// import { SaleEstimatesPdf } from './queries/SaleEstimatesPdf';
+// import { SendSaleEstimateMail } from './commands/SendSaleEstimateMail';
+import { GetSaleEstimateState } from './queries/GetSaleEstimateState.service';
+import { Injectable } from '@nestjs/common';
+import { IFilterMeta, IPaginationMeta } from '@/interfaces/Model';
+
+@Injectable()
+export class SaleEstimatesApplication {
+  constructor(
+    private readonly createSaleEstimateService: CreateSaleEstimate,
+    private readonly editSaleEstimateService: EditSaleEstimate,
+    private readonly deleteSaleEstimateService: DeleteSaleEstimate,
+    private readonly getSaleEstimateService: GetSaleEstimate,
+    // private readonly getSaleEstimatesService: GetSaleEstimates,
+    private readonly deliverSaleEstimateService: DeliverSaleEstimateService,
+    private readonly approveSaleEstimateService: ApproveSaleEstimateService,
+    private readonly rejectSaleEstimateService: RejectSaleEstimateService,
+    // private readonly saleEstimateNotifyBySmsService: SaleEstimateNotifyBySms,
+    // private readonly saleEstimatesPdfService: SaleEstimatesPdf,
+    // private readonly sendEstimateMailService: SendSaleEstimateMail,
+    private readonly getSaleEstimateStateService: GetSaleEstimateState,
+  ) {}
+
+  /**
+   * Create a sale estimate.
+   * @param {EstimateDTO} estimate - Estimate DTO.
+   * @return {Promise<ISaleEstimate>}
+   */
+  public createSaleEstimate(estimateDTO: ISaleEstimateDTO) {
+    return this.createSaleEstimateService.createEstimate(estimateDTO);
+  }
+
+  /**
+   * Edit the given sale estimate.
+   * @param {number} estimateId - Sale estimate ID.
+   * @param {EstimateDTO} estimate - Estimate DTO.
+   * @return {Promise<ISaleEstimate>}
+   */
+  public editSaleEstimate(estimateId: number, estimateDTO: ISaleEstimateDTO) {
+    return this.editSaleEstimateService.editEstimate(estimateId, estimateDTO);
+  }
+
+  /**
+   * Deletes the given sale estimate.
+   * @param {number} estimateId -
+   * @return {Promise<void>}
+   */
+  public deleteSaleEstimate(estimateId: number) {
+    return this.deleteSaleEstimateService.deleteEstimate(estimateId);
+  }
+
+  /**
+   * Retrieves the given sale estimate.
+   * @param {number} estimateId - Sale estimate ID.
+   */
+  public getSaleEstimate(estimateId: number) {
+    return this.getSaleEstimateService.getEstimate(estimateId);
+  }
+
+  /**
+   * Retrieves the sale estimate.
+   * @param {ISalesEstimatesFilter} filterDTO - Sales estimates filter DTO.
+   * @returns
+   */
+  // public getSaleEstimates(filterDTO: ISalesEstimatesFilter) {
+  // return this.getSaleEstimatesService.getEstimates(filterDTO);
+  // }
+
+  /**
+   * Deliver the given sale estimate.
+   * @param {number} saleEstimateId
+   * @returns {Promise<void>}
+   */
+  public deliverSaleEstimate(saleEstimateId: number) {
+    return this.deliverSaleEstimateService.deliverSaleEstimate(saleEstimateId);
+  }
+
+  /**
+   * Approve the given sale estimate.
+   * @param {number} saleEstimateId - Sale estimate ID.
+   * @returns {Promise<void>}
+   */
+  public approveSaleEstimate(saleEstimateId: number) {
+    return this.approveSaleEstimateService.approveSaleEstimate(saleEstimateId);
+  }
+
+  /**
+   * Mark the sale estimate as rejected from the customer.
+   * @param {number} saleEstimateId
+   */
+  public async rejectSaleEstimate(saleEstimateId: number) {
+    return this.rejectSaleEstimateService.rejectSaleEstimate(saleEstimateId);
+  }
+
+  /**
+   * Notify the customer of the given sale estimate by SMS.
+   * @param {number} saleEstimateId - Sale estimate ID.
+   * @returns {Promise<ISaleEstimate>}
+   */
+  public notifySaleEstimateBySms = async (saleEstimateId: number) => {
+    // return this.saleEstimateNotifyBySmsService.notifyBySms(
+    //   saleEstimateId,
+    // );
+  };
+
+  /**
+   * Retrieve the SMS details of the given payment receive transaction.
+   * @param {number} saleEstimateId - Sale estimate ID.
+   * @returns {Promise<IPaymentReceivedSmsDetails>}
+   */
+  public getSaleEstimateSmsDetails = (saleEstimateId: number) => {
+    // return this.saleEstimateNotifyBySmsService.smsDetails(
+    //   saleEstimateId,
+    // );
+  };
+
+  /**
+   * Retrieve the PDF content of the given sale estimate.
+   * @param {number} saleEstimateId - Sale estimate ID.
+   * @returns
+   */
+  public getSaleEstimatePdf(saleEstimateId: number) {
+    // return this.saleEstimatesPdfService.getSaleEstimatePdf(
+    //   saleEstimateId,
+    // );
+  }
+
+  /**
+   * Send the reminder mail of the given sale estimate.
+   * @param {number} saleEstimateId - Sale estimate ID.
+   * @returns {Promise<void>}
+   */
+  public sendSaleEstimateMail() // saleEstimateId: number,
+  // saleEstimateMailOpts: SaleEstimateMailOptionsDTO,
+  {
+    // return this.sendEstimateMailService.triggerMail(
+    //   saleEstimateId,
+    //   saleEstimateMailOpts,
+    // );
+  }
+
+  /**
+   * Retrieves the default mail options of the given sale estimate.
+   * @param {number} saleEstimateId
+   * @returns {Promise<SaleEstimateMailOptions>}
+   */
+  public getSaleEstimateMail(saleEstimateId: number) {
+    // return this.sendEstimateMailService.getMailOptions(
+    //   saleEstimateId,
+    // );
+  }
+
+  /**
+   * Retrieves the current state of the sale estimate.
+   * @returns {Promise<ISaleEstimateState>} - A promise resolving to the sale estimate state.
+   */
+  public getSaleEstimateState() {
+    return this.getSaleEstimateStateService.getSaleEstimateState();
+  }
+}

packages/server-nest/src/modules/SaleEstimates/SaleEstimates.controller.ts

@@ -0,0 +1,132 @@
+import {
+  Body,
+  Controller,
+  Delete,
+  Get,
+  Param,
+  ParseIntPipe,
+  Post,
+  Put,
+  Query,
+} from '@nestjs/common';
+import { SaleEstimatesApplication } from './SaleEstimates.application';
+import {
+  ISaleEstimateDTO,
+  // ISalesEstimatesFilter,
+  // SaleEstimateMailOptionsDTO,
+} from './types/SaleEstimates.types';
+import { SaleEstimate } from './models/SaleEstimate';
+import { PublicRoute } from '../Auth/Jwt.guard';
+
+@Controller('sales/estimates')
+@PublicRoute()
+export class SaleEstimatesController {
+  /**
+   * @param {SaleEstimatesApplication} saleEstimatesApplication - Sale estimates application.
+   */
+  constructor(
+    private readonly saleEstimatesApplication: SaleEstimatesApplication,
+  ) {}
+
+  @Post()
+  public createSaleEstimate(
+    @Body() estimateDTO: ISaleEstimateDTO,
+  ): Promise<SaleEstimate> {
+    return this.saleEstimatesApplication.createSaleEstimate(estimateDTO);
+  }
+
+  @Put(':id')
+  public editSaleEstimate(
+    @Param('id', ParseIntPipe) estimateId: number,
+    @Body() estimateDTO: ISaleEstimateDTO,
+  ): Promise<SaleEstimate> {
+    return this.saleEstimatesApplication.editSaleEstimate(
+      estimateId,
+      estimateDTO,
+    );
+  }
+
+  @Delete(':id')
+  public deleteSaleEstimate(
+    @Param('id', ParseIntPipe) estimateId: number,
+  ): Promise<void> {
+    return this.saleEstimatesApplication.deleteSaleEstimate(estimateId);
+  }
+
+  @Get(':id')
+  public getSaleEstimate(@Param('id', ParseIntPipe) estimateId: number) {
+    return this.saleEstimatesApplication.getSaleEstimate(estimateId);
+  }
+
+  // @Get()
+  // public getSaleEstimates(@Query() filterDTO: ISalesEstimatesFilter) {
+  //   return this.saleEstimatesApplication.getSaleEstimates(filterDTO);
+  // }
+
+  @Post(':id/deliver')
+  public deliverSaleEstimate(
+    @Param('id', ParseIntPipe) saleEstimateId: number,
+  ): Promise<void> {
+    return this.saleEstimatesApplication.deliverSaleEstimate(saleEstimateId);
+  }
+
+  @Post(':id/approve')
+  public approveSaleEstimate(
+    @Param('id', ParseIntPipe) saleEstimateId: number,
+  ): Promise<void> {
+    return this.saleEstimatesApplication.approveSaleEstimate(saleEstimateId);
+  }
+
+  @Post(':id/reject')
+  public rejectSaleEstimate(
+    @Param('id', ParseIntPipe) saleEstimateId: number,
+  ): Promise<void> {
+    return this.saleEstimatesApplication.rejectSaleEstimate(saleEstimateId);
+  }
+
+  @Post(':id/notify-sms')
+  public notifySaleEstimateBySms(
+    @Param('id', ParseIntPipe) saleEstimateId: number,
+  ) {
+    return this.saleEstimatesApplication.notifySaleEstimateBySms(
+      saleEstimateId,
+    );
+  }
+
+  @Get(':id/sms-details')
+  public getSaleEstimateSmsDetails(
+    @Param('id', ParseIntPipe) saleEstimateId: number,
+  ) {
+    return this.saleEstimatesApplication.getSaleEstimateSmsDetails(
+      saleEstimateId,
+    );
+  }
+
+  @Get(':id/pdf')
+  public getSaleEstimatePdf(@Param('id', ParseIntPipe) saleEstimateId: number) {
+    return this.saleEstimatesApplication.getSaleEstimatePdf(saleEstimateId);
+  }
+
+  // @Post(':id/mail')
+  // public sendSaleEstimateMail(
+  //   @Param('id', ParseIntPipe) saleEstimateId: number,
+  //   @Body() mailOptions: SaleEstimateMailOptionsDTO,
+  // ) {
+  //   return this.saleEstimatesApplication.sendSaleEstimateMail(
+  //     saleEstimateId,
+  //     mailOptions,
+  //   );
+  // }
+
+  @Get(':id/mail')
+  public getSaleEstimateMail(
+    @Param('id', ParseIntPipe) saleEstimateId: number,
+  ) {
+    return this.saleEstimatesApplication.getSaleEstimateMail(saleEstimateId);
+  }
+
+  @Get('state')
+  public getSaleEstimateState() {
+    return this.saleEstimatesApplication.getSaleEstimateState();
+  }
+}

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

@@ -0,0 +1,59 @@
+import { Module } from '@nestjs/common';
+import { TenancyContext } from '../Tenancy/TenancyContext.service';
+import { TenancyDatabaseModule } from '../Tenancy/TenancyDB/TenancyDB.module';
+import { TransformerInjectable } from '../Transformer/TransformerInjectable.service';
+import { ApproveSaleEstimateService } from './commands/ApproveSaleEstimate.service';
+import { ConvertSaleEstimate } from './commands/ConvetSaleEstimate.service';
+import { CreateSaleEstimate } from './commands/CreateSaleEstimate.service';
+import { DeliverSaleEstimateService } from './commands/DeliverSaleEstimate.service';
+import { EditSaleEstimate } from './commands/EditSaleEstimate.service';
+import { RejectSaleEstimateService } from './commands/RejectSaleEstimate.service';
+import { SaleEstimateValidators } from './commands/SaleEstimateValidators.service';
+import { SaleEstimatesController } from './SaleEstimates.controller';
+import { ItemsEntriesService } from '../Items/ItemsEntries.service';
+import { SaleEstimateDTOTransformer } from './commands/SaleEstimateDTOTransformer.service';
+import { BranchTransactionDTOTransformer } from '../Branches/integrations/BranchTransactionDTOTransform';
+import { BranchesSettingsService } from '../Branches/BranchesSettings';
+import { WarehouseTransactionDTOTransform } from '../Warehouses/Integrations/WarehouseTransactionDTOTransform';
+import { WarehousesSettings } from '../Warehouses/WarehousesSettings';
+import { SaleEstimateIncrement } from './commands/SaleEstimateIncrement.service';
+import { AutoIncrementOrdersService } from '../AutoIncrementOrders/AutoIncrementOrders.service';
+import { BrandingTemplateDTOTransformer } from '../PdfTemplate/BrandingTemplateDTOTransformer';
+import { SaleEstimatesApplication } from './SaleEstimates.application';
+import { DeleteSaleEstimate } from './commands/DeleteSaleEstimate.service';
+import { GetSaleEstimate } from './queries/GetSaleEstimate.service';
+import { GetSaleEstimateState } from './queries/GetSaleEstimateState.service';
+// import { SaleEstimateNotifyBySms } from './commands/SaleEstimateSmsNotify';
+// import { SendSaleEstimateMail } from './commands/SendSaleEstimateMail';
+//
+@Module({
+  imports: [TenancyDatabaseModule],
+  controllers: [SaleEstimatesController],
+  providers: [
+    AutoIncrementOrdersService,
+    BrandingTemplateDTOTransformer,
+    SaleEstimateIncrement,
+    CreateSaleEstimate,
+    ConvertSaleEstimate,
+    EditSaleEstimate,
+    DeleteSaleEstimate,
+    GetSaleEstimate,
+    GetSaleEstimateState,
+    ApproveSaleEstimateService,
+    DeliverSaleEstimateService,
+    RejectSaleEstimateService,
+    SaleEstimateValidators,
+    ItemsEntriesService,
+    BranchesSettingsService,
+    WarehousesSettings,
+    BranchTransactionDTOTransformer,
+    WarehouseTransactionDTOTransform,
+    SaleEstimateDTOTransformer,
+    TenancyContext,
+    TransformerInjectable,
+    SaleEstimatesApplication
+    // SaleEstimateNotifyBySms,
+    // SendSaleEstimateMail,p
+  ],
+})
+export class SaleEstimatesModule {}

packages/server-nest/src/modules/SaleEstimates/SaleEstimatesExportable.ts

@@ -0,0 +1,35 @@
+// import { Inject, Service } from 'typedi';
+// import { ISalesInvoicesFilter } from '@/interfaces';
+// import { Exportable } from '@/services/Export/Exportable';
+// import { SaleEstimatesApplication } from './SaleEstimates.application';
+// import { EXPORT_SIZE_LIMIT } from '@/services/Export/constants';
+
+// @Service()
+// export class SaleEstimatesExportable extends Exportable {
+//   @Inject()
+//   private saleEstimatesApplication: SaleEstimatesApplication;
+
+//   /**
+//    * Retrieves the accounts data to exportable sheet.
+//    * @param {number} tenantId
+//    * @returns
+//    */
+//   public exportable(tenantId: number, query: ISalesInvoicesFilter) {
+//     const filterQuery = (query) => {
+//       query.withGraphFetched('branch');
+//       query.withGraphFetched('warehouse');
+//     };
+//     const parsedQuery = {
+//       sortOrder: 'desc',
+//       columnSortBy: 'created_at',
+//       ...query,
+//       page: 1,
+//       pageSize: EXPORT_SIZE_LIMIT,
+//       filterQuery,
+//     } as ISalesInvoicesFilter;
+
+//     return this.saleEstimatesApplication
+//       .getSaleEstimates(tenantId, parsedQuery)
+//       .then((output) => output.salesEstimates);
+//   }
+// }

packages/server-nest/src/modules/SaleEstimates/SaleEstimatesImportable.ts

@@ -0,0 +1,45 @@
+// import { Inject, Service } from 'typedi';
+// import { Knex } from 'knex';
+// import { ISaleEstimateDTO } from '@/interfaces';
+// import { CreateSaleEstimate } from './commands/CreateSaleEstimate.service';
+// import { Importable } from '@/services/Import/Importable';
+// import { SaleEstimatesSampleData } from './constants';
+
+// @Service()
+// export class SaleEstimatesImportable extends Importable {
+//   @Inject()
+//   private createEstimateService: CreateSaleEstimate;
+
+//   /**
+//    * Importing to account service.
+//    * @param {number} tenantId
+//    * @param {IAccountCreateDTO} createAccountDTO
+//    * @returns
+//    */
+//   public importable(
+//     tenantId: number,
+//     createEstimateDTO: ISaleEstimateDTO,
+//     trx?: Knex.Transaction
+//   ) {
+//     return this.createEstimateService.createEstimate(
+//       tenantId,
+//       createEstimateDTO,
+//       trx
+//     );
+//   }
+
+//   /**
+//    * Concurrrency controlling of the importing process.
+//    * @returns {number}
+//    */
+//   public get concurrency() {
+//     return 1;
+//   }
+
+//   /**
+//    * Retrieves the sample data that used to download accounts sample sheet.
+//    */
+//   public sampleData(): any[] {
+//     return SaleEstimatesSampleData;
+//   }
+// }

packages/server-nest/src/modules/SaleEstimates/commands/ApproveSaleEstimate.service.ts

@@ -0,0 +1,68 @@
+import { Inject, Injectable } from '@nestjs/common';
+import {
+  ISaleEstimateApprovedEvent,
+  ISaleEstimateApprovingEvent,
+} from '../types/SaleEstimates.types';
+import { ERRORS } from '../constants';
+import { Knex } from 'knex';
+import moment from 'moment';
+import { UnitOfWork } from '@/modules/Tenancy/TenancyDB/UnitOfWork.service';
+import { SaleEstimate } from '../models/SaleEstimate';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { events } from '@/common/events/events';
+import { ServiceError } from '@/modules/Items/ServiceError';
+
+@Injectable()
+export class ApproveSaleEstimateService {
+  constructor(
+    @Inject(SaleEstimate.name)
+    private saleEstimateModel: typeof SaleEstimate,
+    private uow: UnitOfWork,
+    private eventPublisher: EventEmitter2,
+  ) {}
+
+  /**
+   * Mark the sale estimate as approved from the customer.
+   * @param {number} saleEstimateId
+   * @return {Promise<void>}
+   */
+  public async approveSaleEstimate(saleEstimateId: number): Promise<void> {
+    // Retrieve details of the given sale estimate id.
+    const oldSaleEstimate = await this.saleEstimateModel
+      .query()
+      .findById(saleEstimateId)
+      .throwIfNotFound();
+
+    // Throws error in case the sale estimate still not delivered to customer.
+    if (!oldSaleEstimate.isDelivered) {
+      throw new ServiceError(ERRORS.SALE_ESTIMATE_NOT_DELIVERED);
+    }
+    // Throws error in case the sale estimate already approved.
+    if (oldSaleEstimate.isApproved) {
+      throw new ServiceError(ERRORS.SALE_ESTIMATE_ALREADY_APPROVED);
+    }
+    // Triggers `onSaleEstimateApproving` event.
+    return this.uow.withTransaction(async (trx: Knex.Transaction) => {
+      // Triggers `onSaleEstimateApproving` event.
+      await this.eventPublisher.emitAsync(events.saleEstimate.onApproving, {
+        trx,
+        oldSaleEstimate,
+      } as ISaleEstimateApprovingEvent);
+
+      // Update estimate as approved.
+      const saleEstimate = await this.saleEstimateModel
+        .query(trx)
+        .where('id', saleEstimateId)
+        .patchAndFetch({
+          approvedAt: moment().toMySqlDateTime(),
+          rejectedAt: null,
+        });
+      // Triggers `onSaleEstimateApproved` event.
+      await this.eventPublisher.emitAsync(events.saleEstimate.onApproved, {
+        trx,
+        oldSaleEstimate,
+        saleEstimate,
+      } as ISaleEstimateApprovedEvent);
+    });
+  }
+}

packages/server-nest/src/modules/SaleEstimates/commands/ConvetSaleEstimate.service.ts

@@ -0,0 +1,44 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { Knex } from 'knex';
+import moment from 'moment';
+import { SaleEstimate } from '../models/SaleEstimate';
+import { events } from '@/common/events/events';
+
+@Injectable()
+export class ConvertSaleEstimate {
+  constructor(
+    private readonly eventPublisher: EventEmitter2,
+
+    @Inject(SaleEstimate.name)
+    private readonly saleEstimateModel: typeof SaleEstimate,
+  ) {}
+
+  /**
+   * Converts estimate to invoice.
+   * @param {number} estimateId -
+   * @return {Promise<void>}
+   */
+  public async convertEstimateToInvoice(
+    estimateId: number,
+    invoiceId: number,
+    trx?: Knex.Transaction
+  ): Promise<void> {
+    // Retrieve details of the given sale estimate.
+    const saleEstimate = await this.saleEstimateModel.query()
+      .findById(estimateId)
+      .throwIfNotFound();
+
+    // Marks the estimate as converted from the givne invoice.
+    await this.saleEstimateModel.query(trx).where('id', estimateId).patch({
+      convertedToInvoiceId: invoiceId,
+      convertedToInvoiceAt: moment().toMySqlDateTime(),
+    });
+    
+    // Triggers `onSaleEstimateConvertedToInvoice` event.
+    await this.eventPublisher.emitAsync(
+      events.saleEstimate.onConvertedToInvoice,
+      {}
+    );
+  }
+}

packages/server-nest/src/modules/SaleEstimates/commands/CreateSaleEstimate.service.ts

@@ -0,0 +1,86 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { Knex } from 'knex';
+import {
+  ISaleEstimateCreatedPayload,
+  ISaleEstimateCreatingPayload,
+  ISaleEstimateDTO,
+} from '../types/SaleEstimates.types';
+import { SaleEstimateDTOTransformer } from './SaleEstimateDTOTransformer.service';
+import { SaleEstimateValidators } from './SaleEstimateValidators.service';
+import { SaleEstimate } from '../models/SaleEstimate';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { UnitOfWork } from '@/modules/Tenancy/TenancyDB/UnitOfWork.service';
+import { events } from '@/common/events/events';
+import { ItemsEntriesService } from '@/modules/Items/ItemsEntries.service';
+import { Customer } from '@/modules/Customers/models/Customer';
+
+@Injectable()
+export class CreateSaleEstimate {
+  constructor(
+    @Inject(SaleEstimate.name) private saleEstimateModel: typeof SaleEstimate,
+    @Inject(Customer.name) private customerModel: typeof Customer,
+    private itemsEntriesService: ItemsEntriesService,
+    private eventPublisher: EventEmitter2,
+    private uow: UnitOfWork,
+    private transformerDTO: SaleEstimateDTOTransformer,
+    private validators: SaleEstimateValidators,
+  ) {}
+
+  /**
+   * Creates a new estimate with associated entries.
+   * @param {ISaleEstimateDTO} estimateDTO - Sale estimate DTO object.
+   * @return {Promise<ISaleEstimate>}
+   */
+  public async createEstimate(
+    estimateDTO: ISaleEstimateDTO,
+    trx?: Knex.Transaction,
+  ): Promise<SaleEstimate> {
+    // Retrieve the given customer or throw not found service error.
+    const customer = await this.customerModel
+      .query()
+      .findById(estimateDTO.customerId)
+      .throwIfNotFound();
+
+    // Transform DTO object to model object.
+    const estimateObj = await this.transformerDTO.transformDTOToModel(
+      estimateDTO,
+      customer,
+    );
+    // Validate estimate number uniquiness on the storage.
+    await this.validators.validateEstimateNumberExistance(
+      estimateObj.estimateNumber,
+    );
+    // Validate items IDs existance on the storage.
+    await this.itemsEntriesService.validateItemsIdsExistance(
+      estimateDTO.entries,
+    );
+    // Validate non-sellable items.
+    await this.itemsEntriesService.validateNonSellableEntriesItems(
+      estimateDTO.entries,
+    );
+    // Creates a sale estimate transaction with associated transactions as UOW.
+    return this.uow.withTransaction(async (trx: Knex.Transaction) => {
+      // Triggers `onSaleEstimateCreating` event.
+      await this.eventPublisher.emitAsync(events.saleEstimate.onCreating, {
+        estimateDTO,
+        trx,
+      } as ISaleEstimateCreatingPayload);
+
+      // Upsert the sale estimate graph to the storage.
+      const saleEstimate = await this.saleEstimateModel
+        .query(trx)
+        .upsertGraphAndFetch({
+          ...estimateObj,
+        });
+      // Triggers `onSaleEstimateCreated` event.
+      await this.eventPublisher.emitAsync(events.saleEstimate.onCreated, {
+        saleEstimate,
+        saleEstimateId: saleEstimate.id,
+        saleEstimateDTO: estimateDTO,
+        trx,
+      } as ISaleEstimateCreatedPayload);
+
+      return saleEstimate;
+    }, trx);
+  }
+}

packages/server-nest/src/modules/SaleEstimates/commands/DeleteSaleEstimate.service.ts

@@ -0,0 +1,71 @@
+import { Inject, Injectable } from '@nestjs/common';
+import {
+  ISaleEstimateDeletedPayload,
+  ISaleEstimateDeletingPayload,
+} from '../types/SaleEstimates.types';
+import { ERRORS } from '../constants';
+import { Knex } from 'knex';
+import { SaleEstimate } from '../models/SaleEstimate';
+import { UnitOfWork } from '@/modules/Tenancy/TenancyDB/UnitOfWork.service';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { events } from '@/common/events/events';
+import { ServiceError } from '@/modules/Items/ServiceError';
+import { ItemEntry } from '@/modules/TransactionItemEntry/models/ItemEntry';
+
+@Injectable()
+export class DeleteSaleEstimate {
+  constructor(
+    @Inject(SaleEstimate.name)
+    private readonly saleEstimateModel: typeof SaleEstimate,
+
+    @Inject(ItemEntry.name)
+    private readonly itemEntryModel: typeof ItemEntry,
+
+    private readonly eventPublisher: EventEmitter2,
+    private readonly uow: UnitOfWork,
+  ) {}
+
+  /**
+   * Deletes the given estimate id with associated entries.
+   * @async
+   * @param {number} estimateId
+   * @return {Promise<void>}
+   */
+  public async deleteEstimate(estimateId: number): Promise<void> {
+    // Retrieve sale estimate or throw not found service error.
+    const oldSaleEstimate = await this.saleEstimateModel
+      .query()
+      .findById(estimateId)
+      .throwIfNotFound();
+
+    // Throw error if the sale estimate converted to sale invoice.
+    if (oldSaleEstimate.convertedToInvoiceId) {
+      throw new ServiceError(ERRORS.SALE_ESTIMATE_CONVERTED_TO_INVOICE);
+    }
+    // Updates the estimate with associated transactions under UOW enivrement.
+    return this.uow.withTransaction(async (trx: Knex.Transaction) => {
+      // Triggers `onSaleEstimatedDeleting` event.
+      await this.eventPublisher.emitAsync(events.saleEstimate.onDeleting, {
+        trx,
+        oldSaleEstimate,
+      } as ISaleEstimateDeletingPayload);
+
+      // Delete sale estimate entries.
+      await this.itemEntryModel
+        .query(trx)
+        .where('reference_id', estimateId)
+        .where('reference_type', 'SaleEstimate')
+        .delete();
+
+      // Delete sale estimate transaction.
+      await this.saleEstimateModel.query(trx).where('id', estimateId).delete();
+
+      // Triggers `onSaleEstimatedDeleted` event.
+      await this.eventPublisher.emitAsync(events.saleEstimate.onDeleted, {
+        saleEstimateId: estimateId,
+        oldSaleEstimate,
+        trx,
+      } as ISaleEstimateDeletedPayload);
+    });
+  }
+}

packages/server-nest/src/modules/SaleEstimates/commands/DeliverSaleEstimate.service.ts

@@ -0,0 +1,63 @@
+import { Knex } from 'knex';
+import moment from 'moment';
+import { Inject, Injectable } from '@nestjs/common';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import {
+  ISaleEstimateEventDeliveredPayload,
+  ISaleEstimateEventDeliveringPayload,
+} from '../types/SaleEstimates.types';
+import { ERRORS } from '../constants';
+import { SaleEstimate } from '../models/SaleEstimate';
+import { UnitOfWork } from '@/modules/Tenancy/TenancyDB/UnitOfWork.service';
+import { events } from '@/common/events/events';
+import { ServiceError } from '@/modules/Items/ServiceError';
+
+@Injectable()
+export class DeliverSaleEstimateService {
+  constructor(
+    @Inject(SaleEstimate.name)
+    private readonly saleEstimateModel: typeof SaleEstimate,
+    private readonly eventPublisher: EventEmitter2,
+    private readonly uow: UnitOfWork,
+  ) {}
+
+  /**
+   * Mark the sale estimate as delivered.
+   * @param {number} saleEstimateId - Sale estimate id.
+   */
+  public async deliverSaleEstimate(saleEstimateId: number): Promise<void> {
+    // Retrieve details of the given sale estimate id.
+    const oldSaleEstimate = await this.saleEstimateModel
+      .query()
+      .findById(saleEstimateId)
+      .throwIfNotFound();
+
+    // Throws error in case the sale estimate already published.
+    if (oldSaleEstimate.isDelivered) {
+      throw new ServiceError(ERRORS.SALE_ESTIMATE_ALREADY_DELIVERED);
+    }
+
+    // Updates the sale estimate transaction with assocaited transactions
+    // under UOW envirement.
+    return this.uow.withTransaction(async (trx: Knex.Transaction) => {
+      // Triggers `onSaleEstimateDelivering` event.
+      await this.eventPublisher.emitAsync(events.saleEstimate.onDelivering, {
+        oldSaleEstimate,
+        trx,
+      } as ISaleEstimateEventDeliveringPayload);
+
+      // Record the delivered at on the storage.
+      const saleEstimate = await this.saleEstimateModel
+        .query(trx)
+        .patchAndFetchById(saleEstimateId, {
+          deliveredAt: moment().toMySqlDateTime(),
+        });
+
+      // Triggers `onSaleEstimateDelivered` event.
+      await this.eventPublisher.emitAsync(events.saleEstimate.onDelivered, {
+        saleEstimate,
+        trx,
+      } as ISaleEstimateEventDeliveredPayload);
+    });
+  }
+}

packages/server-nest/src/modules/SaleEstimates/commands/EditSaleEstimate.service.ts

@@ -0,0 +1,115 @@
+import { Knex } from 'knex';
+import { Inject, Injectable } from '@nestjs/common';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import {
+  ISaleEstimateDTO,
+  ISaleEstimateEditedPayload,
+  ISaleEstimateEditingPayload,
+} from '../types/SaleEstimates.types';
+import { SaleEstimateValidators } from './SaleEstimateValidators.service';
+import { SaleEstimateDTOTransformer } from './SaleEstimateDTOTransformer.service';
+import { UnitOfWork } from '@/modules/Tenancy/TenancyDB/UnitOfWork.service';
+import { events } from '@/common/events/events';
+import { SaleEstimate } from '../models/SaleEstimate';
+import { ItemsEntriesService } from '@/modules/Items/ItemsEntries.service';
+import { Customer } from '@/modules/Customers/models/Customer';
+
+@Injectable()
+export class EditSaleEstimate {
+  constructor(
+    private readonly validators: SaleEstimateValidators,
+    private readonly itemsEntriesService: ItemsEntriesService,
+    private readonly eventPublisher: EventEmitter2,
+    private readonly uow: UnitOfWork,
+    private readonly transformerDTO: SaleEstimateDTOTransformer,
+
+    @Inject(SaleEstimate.name)
+    private readonly saleEstimateModel: typeof SaleEstimate,
+
+    @Inject(Customer.name)
+    private readonly customerModel: typeof Customer,
+  ) {}
+
+  /**
+   * Edit details of the given estimate with associated entries.
+   * @async
+   * @param {Integer} estimateId
+   * @param {EstimateDTO} estimate
+   * @return {Promise<ISaleEstimate>}
+   */
+  public async editEstimate(
+    estimateId: number,
+    estimateDTO: ISaleEstimateDTO,
+  ): Promise<SaleEstimate> {
+    // Retrieve details of the given sale estimate id.
+    const oldSaleEstimate = await this.saleEstimateModel
+      .query()
+      .findById(estimateId);
+
+    // Validates the given estimate existance.
+    this.validators.validateEstimateExistance(oldSaleEstimate);
+
+    // Retrieve the given customer or throw not found service error.
+    const customer = await this.customerModel
+      .query()
+      .findById(estimateDTO.customerId)
+      .throwIfNotFound();
+
+    // Transform DTO object to model object.
+    const estimateObj = await this.transformerDTO.transformDTOToModel(
+      estimateDTO,
+      customer,
+      oldSaleEstimate,
+    );
+    // Validate estimate number uniquiness on the storage.
+    if (estimateDTO.estimateNumber) {
+      await this.validators.validateEstimateNumberExistance(
+        estimateDTO.estimateNumber,
+        estimateId,
+      );
+    }
+    // Validate sale estimate entries existance.
+    await this.itemsEntriesService.validateEntriesIdsExistance(
+      estimateId,
+      'SaleEstimate',
+      estimateDTO.entries,
+    );
+    // Validate items IDs existance on the storage.
+    await this.itemsEntriesService.validateItemsIdsExistance(
+      estimateDTO.entries,
+    );
+    // Validate non-sellable items.
+    await this.itemsEntriesService.validateNonSellableEntriesItems(
+      estimateDTO.entries,
+    );
+    // Edits estimate transaction with associated transactions
+    // under unit-of-work envirement.
+    return this.uow.withTransaction(async (trx: Knex.Transaction) => {
+      // Trigger `onSaleEstimateEditing` event.
+      await this.eventPublisher.emitAsync(events.saleEstimate.onEditing, {
+        oldSaleEstimate,
+        estimateDTO,
+        trx,
+      } as ISaleEstimateEditingPayload);
+
+      // Upsert the estimate graph to the storage.
+      const saleEstimate = await this.saleEstimateModel
+        .query(trx)
+        .upsertGraphAndFetch({
+          id: estimateId,
+          ...estimateObj,
+        });
+
+      // Trigger `onSaleEstimateEdited` event.
+      await this.eventPublisher.emitAsync(events.saleEstimate.onEdited, {
+        estimateId,
+        saleEstimate,
+        oldSaleEstimate,
+        estimateDTO,
+        trx,
+      } as ISaleEstimateEditedPayload);
+
+      return saleEstimate;
+    });
+  }
+}

packages/server-nest/src/modules/SaleEstimates/commands/RejectSaleEstimate.service.ts

@@ -0,0 +1,50 @@
+import { Inject, Injectable } from '@nestjs/common';
+import moment from 'moment';
+import { Knex } from 'knex';
+import { SaleEstimate } from '../models/SaleEstimate';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { UnitOfWork } from '@/modules/Tenancy/TenancyDB/UnitOfWork.service';
+import { ServiceError } from '@/modules/Items/ServiceError';
+import { ERRORS } from '../constants';
+import { events } from '@/common/events/events';
+
+
+@Injectable()
+export class RejectSaleEstimateService {
+  constructor(
+    @Inject(SaleEstimate.name)
+    private readonly saleEstimateModel: typeof SaleEstimate,
+    private readonly eventPublisher: EventEmitter2,
+    private readonly uow: UnitOfWork,
+  ) {}
+
+  /**
+   * Mark the sale estimate as rejected from the customer.
+   * @param {number} saleEstimateId
+   */
+  public async rejectSaleEstimate(saleEstimateId: number): Promise<void> {
+    // Retrieve details of the given sale estimate id.
+    const saleEstimate = await this.saleEstimateModel.query()
+      .findById(saleEstimateId)
+      .throwIfNotFound();
+
+    // Throws error in case the sale estimate still not delivered to customer.
+    if (!saleEstimate.isDelivered) {
+      throw new ServiceError(ERRORS.SALE_ESTIMATE_NOT_DELIVERED);
+    }
+    // Throws error in case the sale estimate already rejected.
+    if (saleEstimate.isRejected) {
+      throw new ServiceError(ERRORS.SALE_ESTIMATE_ALREADY_REJECTED);
+    }
+
+    return this.uow.withTransaction(async (trx: Knex.Transaction) => {
+      // Mark the sale estimate as reject on the storage.
+      await this.saleEstimateModel.query(trx).where('id', saleEstimateId).patch({
+        rejectedAt: moment().toMySqlDateTime(),
+        approvedAt: null,
+      });
+      // Triggers `onSaleEstimateRejected` event.
+      await this.eventPublisher.emitAsync(events.saleEstimate.onRejected, {});
+    });
+  }
+}

packages/server-nest/src/modules/SaleEstimates/commands/SaleEstimateDTOTransformer.service.ts

@@ -0,0 +1,115 @@
+import * as R from 'ramda';
+import { Inject, Injectable } from '@nestjs/common';
+import { omit, sumBy } from 'lodash';
+import * as  composeAsync from 'async/compose';
+// import { ICustomer, ISaleEstimate, ISaleEstimateDTO } from '../types/SaleEstimates.types';
+import { SaleEstimateValidators } from './SaleEstimateValidators.service';
+// import { BranchTransactionDTOTransform } from '@/services/Branches/Integrations/BranchTransactionDTOTransform';
+// import { WarehouseTransactionDTOTransform } from '@/services/Warehouses/Integrations/WarehouseTransactionDTOTransform';
+import { formatDateFields } from '@/utils/format-date-fields';
+import * as moment from 'moment';
+import { SaleEstimateIncrement } from './SaleEstimateIncrement.service';
+import { BranchTransactionDTOTransformer } from '@/modules/Branches/integrations/BranchTransactionDTOTransform';
+import { WarehouseTransactionDTOTransform } from '@/modules/Warehouses/Integrations/WarehouseTransactionDTOTransform';
+import { assocItemEntriesDefaultIndex } from '@/utils/associate-item-entries-index';
+import { BrandingTemplateDTOTransformer } from '@/modules/PdfTemplate/BrandingTemplateDTOTransformer';
+import { ItemEntry } from '@/modules/TransactionItemEntry/models/ItemEntry';
+import { SaleEstimate } from '../models/SaleEstimate';
+import { Customer } from '@/modules/Customers/models/Customer';
+import { ISaleEstimateDTO } from '../types/SaleEstimates.types';
+// import { assocItemEntriesDefaultIndex } from '@/services/Items/utils';
+// import { BrandingTemplateDTOTransformer } from '@/services/PdfTemplate/BrandingTemplateDTOTransformer';
+
+@Injectable()
+export class SaleEstimateDTOTransformer {
+  constructor(
+    @Inject(ItemEntry.name)
+    private itemEntryModel: typeof ItemEntry,
+    private readonly validators: SaleEstimateValidators,
+    private readonly branchDTOTransform: BranchTransactionDTOTransformer,
+    private readonly warehouseDTOTransform: WarehouseTransactionDTOTransform,
+    private readonly estimateIncrement: SaleEstimateIncrement,
+    private readonly brandingTemplatesTransformer: BrandingTemplateDTOTransformer,
+  ) {}
+
+  /**
+   * Transform create DTO object ot model object.
+   * @param  {ISaleEstimateDTO} saleEstimateDTO - Sale estimate DTO.
+   * @param {Customer} paymentCustomer - Payment customer.
+   * @param {SaleEstimate} oldSaleEstimate - Old sale estimate.
+   * @return {ISaleEstimate}
+   */
+  async transformDTOToModel(
+    estimateDTO: ISaleEstimateDTO,
+    paymentCustomer: Customer,
+    oldSaleEstimate?: SaleEstimate
+  ): Promise<SaleEstimate> {
+    const amount = sumBy(estimateDTO.entries, (e) => 
+      this.itemEntryModel.calcAmount(e)
+    );
+    // Retrieve the next invoice number.
+    const autoNextNumber = this.estimateIncrement.getNextEstimateNumber();
+
+    // Retrieve the next estimate number.
+    const estimateNumber =
+      estimateDTO.estimateNumber ||
+      oldSaleEstimate?.estimateNumber ||
+      autoNextNumber;
+
+    // Validate the sale estimate number require.
+    this.validators.validateEstimateNoRequire(estimateNumber);
+
+    const entries = R.compose(
+      // Associate the reference type to item entries.
+      R.map((entry) => R.assoc('reference_type', 'SaleEstimate', entry)),
+
+      // Associate default index to item entries.
+      assocItemEntriesDefaultIndex
+    )(estimateDTO.entries);
+
+    const initialDTO = {
+      amount,
+      ...formatDateFields(
+        omit(estimateDTO, ['delivered', 'entries', 'attachments']),
+        ['estimateDate', 'expirationDate']
+      ),
+      currencyCode: paymentCustomer.currencyCode,
+      exchangeRate: estimateDTO.exchangeRate || 1,
+      ...(estimateNumber ? { estimateNumber } : {}),
+      entries,
+      // Avoid rewrite the deliver date in edit mode when already published.
+      ...(estimateDTO.delivered &&
+        !oldSaleEstimate?.deliveredAt && {
+          deliveredAt: moment().toMySqlDateTime(),
+        }),
+    };
+    const initialAsyncDTO = await composeAsync(
+      // Assigns the default branding template id to the invoice DTO.
+      this.brandingTemplatesTransformer.assocDefaultBrandingTemplate(
+        'SaleEstimate'
+      )
+    )(initialDTO);
+
+    return R.compose(
+      this.branchDTOTransform.transformDTO<SaleEstimate>,
+      this.warehouseDTOTransform.transformDTO<SaleEstimate>,
+    )(initialAsyncDTO);
+  }
+
+  /**
+   * Retrieve estimate number to object model.
+   * @param {ISaleEstimateDTO} saleEstimateDTO
+   * @param {ISaleEstimate} oldSaleEstimate
+   */
+  public transformEstimateNumberToModel(
+    saleEstimateDTO: ISaleEstimateDTO,
+    oldSaleEstimate?: SaleEstimate
+  ): string {
+    const autoNextNumber = this.estimateIncrement.getNextEstimateNumber();
+
+    if (saleEstimateDTO.estimateNumber) {
+      return saleEstimateDTO.estimateNumber;
+    }
+    return oldSaleEstimate ? oldSaleEstimate.estimateNumber : autoNextNumber;
+  }
+}

packages/server-nest/src/modules/SaleEstimates/commands/SaleEstimateIncrement.service.ts

@@ -0,0 +1,28 @@
+import { AutoIncrementOrdersService } from '@/modules/AutoIncrementOrders/AutoIncrementOrders.service';
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class SaleEstimateIncrement {
+  constructor(
+    private readonly autoIncrementOrdersService: AutoIncrementOrdersService,
+  ) {}
+
+  /**
+   * Retrieve the next unique estimate number.
+   * @return {string}
+   */
+  public getNextEstimateNumber(): string {
+    return this.autoIncrementOrdersService.getNextTransactionNumber(
+      'sales_estimates',
+    );
+  }
+
+  /**
+   * Increment the estimate next number.
+   */
+  public incrementNextEstimateNumber() {
+    return this.autoIncrementOrdersService.incrementSettingsNextNumber(
+      'sales_estimates',
+    );
+  }
+}

packages/server-nest/src/modules/SaleEstimates/commands/SaleEstimateSmsNotify.ts

@@ -0,0 +1,217 @@
+// import { Service, Inject } from 'typedi';
+// import moment from 'moment';
+// import events from '@/subscribers/events';
+// import HasTenancyService from '@/services/Tenancy/TenancyService';
+// import SaleNotifyBySms from '../SaleNotifyBySms';
+// import SmsNotificationsSettingsService from '@/services/Settings/SmsNotificationsSettings';
+// import {
+//   ICustomer,
+//   IPaymentReceivedSmsDetails,
+//   ISaleEstimate,
+//   SMS_NOTIFICATION_KEY,
+// } from '@/interfaces';
+// import { Tenant, TenantMetadata } from '@/system/models';
+// import { formatNumber, formatSmsMessage } from 'utils';
+// import { ServiceError } from '@/exceptions';
+// import { EventPublisher } from '@/lib/EventPublisher/EventPublisher';
+
+// const ERRORS = {
+//   SALE_ESTIMATE_NOT_FOUND: 'SALE_ESTIMATE_NOT_FOUND',
+// };
+
+// @Service()
+// export class SaleEstimateNotifyBySms {
+//   @Inject()
+//   private tenancy: HasTenancyService;
+
+//   @Inject()
+//   private saleSmsNotification: SaleNotifyBySms;
+
+//   @Inject()
+//   private eventPublisher: EventPublisher;
+
+//   @Inject()
+//   private smsNotificationsSettings: SmsNotificationsSettingsService;
+
+//   /**
+//    *
+//    * @param {number} tenantId
+//    * @param {number} saleEstimateId
+//    * @returns {Promise<ISaleEstimate>}
+//    */
+//   public notifyBySms = async (
+//     tenantId: number,
+//     saleEstimateId: number
+//   ): Promise<ISaleEstimate> => {
+//     const { SaleEstimate } = this.tenancy.models(tenantId);
+
+//     // Retrieve the sale invoice or throw not found service error.
+//     const saleEstimate = await SaleEstimate.query()
+//       .findById(saleEstimateId)
+//       .withGraphFetched('customer');
+
+//     // Validates the estimate transaction existance.
+//     this.validateEstimateExistance(saleEstimate);
+
+//     // Validate the customer phone number existance and number validation.
+//     this.saleSmsNotification.validateCustomerPhoneNumber(
+//       saleEstimate.customer.personalPhone
+//     );
+//     // Triggers `onSaleEstimateNotifySms` event.
+//     await this.eventPublisher.emitAsync(events.saleEstimate.onNotifySms, {
+//       tenantId,
+//       saleEstimate,
+//     });
+//     await this.sendSmsNotification(tenantId, saleEstimate);
+
+//     // Triggers `onSaleEstimateNotifySms` event.
+//     await this.eventPublisher.emitAsync(events.saleEstimate.onNotifiedSms, {
+//       tenantId,
+//       saleEstimate,
+//     });
+//     return saleEstimate;
+//   };
+
+//   /**
+//    *
+//    * @param {number} tenantId
+//    * @param {ISaleEstimate} saleEstimate
+//    * @returns
+//    */
+//   private sendSmsNotification = async (
+//     tenantId: number,
+//     saleEstimate: ISaleEstimate & { customer: ICustomer }
+//   ) => {
+//     const smsClient = this.tenancy.smsClient(tenantId);
+//     const tenantMetadata = await TenantMetadata.query().findOne({ tenantId });
+
+//     // Retrieve the formatted sms notification message for estimate details.
+//     const formattedSmsMessage = this.formattedEstimateDetailsMessage(
+//       tenantId,
+//       saleEstimate,
+//       tenantMetadata
+//     );
+//     const phoneNumber = saleEstimate.customer.personalPhone;
+
+//     // Runs the send message job.
+//     return smsClient.sendMessageJob(phoneNumber, formattedSmsMessage);
+//   };
+
+//   /**
+//    * Notify via SMS message after estimate creation.
+//    * @param {number} tenantId
+//    * @param {number} saleEstimateId
+//    * @returns {Promise<void>}
+//    */
+//   public notifyViaSmsNotificationAfterCreation = async (
+//     tenantId: number,
+//     saleEstimateId: number
+//   ): Promise<void> => {
+//     const notification = this.smsNotificationsSettings.getSmsNotificationMeta(
+//       tenantId,
+//       SMS_NOTIFICATION_KEY.SALE_ESTIMATE_DETAILS
+//     );
+//     // Can't continue if the sms auto-notification is not enabled.
+//     if (!notification.isNotificationEnabled) return;
+
+//     await this.notifyBySms(tenantId, saleEstimateId);
+//   };
+
+//   /**
+//    *
+//    * @param {number} tenantId
+//    * @param {ISaleEstimate} saleEstimate
+//    * @param {TenantMetadata} tenantMetadata
+//    * @returns {string}
+//    */
+//   private formattedEstimateDetailsMessage = (
+//     tenantId: number,
+//     saleEstimate: ISaleEstimate,
+//     tenantMetadata: TenantMetadata
+//   ): string => {
+//     const notification = this.smsNotificationsSettings.getSmsNotificationMeta(
+//       tenantId,
+//       SMS_NOTIFICATION_KEY.SALE_ESTIMATE_DETAILS
+//     );
+//     return this.formateEstimateDetailsMessage(
+//       notification.smsMessage,
+//       saleEstimate,
+//       tenantMetadata
+//     );
+//   };
+
+//   /**
+//    * Formattes the estimate sms notification details message.
+//    * @param {string} smsMessage
+//    * @param {ISaleEstimate} saleEstimate
+//    * @param {TenantMetadata} tenantMetadata
+//    * @returns {string}
+//    */
+//   private formateEstimateDetailsMessage = (
+//     smsMessage: string,
+//     saleEstimate: ISaleEstimate & { customer: ICustomer },
+//     tenantMetadata: TenantMetadata
+//   ) => {
+//     const formattedAmount = formatNumber(saleEstimate.amount, {
+//       currencyCode: saleEstimate.currencyCode,
+//     });
+
+//     return formatSmsMessage(smsMessage, {
+//       EstimateNumber: saleEstimate.estimateNumber,
+//       ReferenceNumber: saleEstimate.reference,
+//       EstimateDate: moment(saleEstimate.estimateDate).format('YYYY/MM/DD'),
+//       ExpirationDate: saleEstimate.expirationDate
+//         ? moment(saleEstimate.expirationDate).format('YYYY/MM/DD')
+//         : '',
+//       CustomerName: saleEstimate.customer.displayName,
+//       Amount: formattedAmount,
+//       CompanyName: tenantMetadata.name,
+//     });
+//   };
+
+//   /**
+//    * Retrieve the SMS details of the given payment receive transaction.
+//    * @param {number} tenantId
+//    * @param {number} saleEstimateId
+//    * @returns {Promise<IPaymentReceivedSmsDetails>}
+//    */
+//   public smsDetails = async (
+//     tenantId: number,
+//     saleEstimateId: number
+//   ): Promise<IPaymentReceivedSmsDetails> => {
+//     const { SaleEstimate } = this.tenancy.models(tenantId);
+
+//     // Retrieve the sale invoice or throw not found service error.
+//     const saleEstimate = await SaleEstimate.query()
+//       .findById(saleEstimateId)
+//       .withGraphFetched('customer');
+
+//     // Validates the estimate existance.
+//     this.validateEstimateExistance(saleEstimate);
+
+//     // Retrieve the current tenant metadata.
+//     const tenantMetadata = await TenantMetadata.query().findOne({ tenantId });
+
+//     // Retrieve the formatted sms message from the given estimate model.
+//     const formattedSmsMessage = this.formattedEstimateDetailsMessage(
+//       tenantId,
+//       saleEstimate,
+//       tenantMetadata
+//     );
+//     return {
+//       customerName: saleEstimate.customer.displayName,
+//       customerPhoneNumber: saleEstimate.customer.personalPhone,
+//       smsMessage: formattedSmsMessage,
+//     };
+//   };
+
+//   /**
+//    * Validates the sale estimate existance.
+//    * @param {ISaleEstimate} saleEstimate -
+//    */
+//   private validateEstimateExistance(saleEstimate: ISaleEstimate) {
+//     if (!saleEstimate) {
+//       throw new ServiceError(ERRORS.SALE_ESTIMATE_NOT_FOUND);
+//     }
+//   }
+// }

packages/server-nest/src/modules/SaleEstimates/commands/SaleEstimateValidators.service.ts

@@ -0,0 +1,81 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { ERRORS } from '../constants';
+import { SaleEstimate } from '../models/SaleEstimate';
+import { ServiceError } from '@/modules/Items/ServiceError';
+
+@Injectable()
+export class SaleEstimateValidators {
+  constructor(
+    @Inject(SaleEstimate.name)
+    private readonly saleEstimateModel: typeof SaleEstimate,
+  ) {}
+
+  /**
+   * Validates the given estimate existance.
+   * @param {SaleEstimate | undefined | null} estimate - The sale estimate.
+   */
+  public validateEstimateExistance(estimate: SaleEstimate | undefined | null) {
+    if (!estimate) {
+      throw new ServiceError(ERRORS.SALE_ESTIMATE_NOT_FOUND);
+    }
+  }
+
+  /**
+   * Validate the estimate number unique on the storage.
+   * @param {string} estimateNumber - The estimate number.
+   * @param {number} notEstimateId - The estimate id to exclude from the search.
+   */
+  public async validateEstimateNumberExistance(
+    estimateNumber: string,
+    notEstimateId?: number,
+  ) {
+    const foundSaleEstimate = await this.saleEstimateModel
+      .query()
+      .findOne('estimate_number', estimateNumber)
+      .onBuild((builder) => {
+        if (notEstimateId) {
+          builder.whereNot('id', notEstimateId);
+        }
+      });
+    if (foundSaleEstimate) {
+      throw new ServiceError(
+        ERRORS.SALE_ESTIMATE_NUMBER_EXISTANCE,
+        'The given sale estimate is not unique.',
+      );
+    }
+  }
+
+  /**
+   * Validates the given sale estimate not already converted to invoice.
+   * @param {SaleEstimate} saleEstimate -
+   */
+  public validateEstimateNotConverted(saleEstimate: SaleEstimate) {
+    if (saleEstimate.isConvertedToInvoice) {
+      throw new ServiceError(ERRORS.SALE_ESTIMATE_CONVERTED_TO_INVOICE);
+    }
+  }
+
+  /**
+   * Validate the sale estimate number require.
+   * @param {string} estimateNumber
+   */
+  public validateEstimateNoRequire(estimateNumber: string) {
+    if (!estimateNumber) {
+      throw new ServiceError(ERRORS.SALE_ESTIMATE_NO_IS_REQUIRED);
+    }
+  }
+
+  /**
+   * Validate the given customer has no sales estimates.
+   * @param {number} customerId - The customer id.
+   */
+  public async validateCustomerHasNoEstimates(customerId: number) {
+    const estimates = await this.saleEstimateModel
+      .query()
+      .where('customer_id', customerId);
+
+    if (estimates.length > 0) {
+      throw new ServiceError(ERRORS.CUSTOMER_HAS_SALES_ESTIMATES);
+    }
+  }
+}

packages/server-nest/src/modules/SaleEstimates/commands/SendSaleEstimateMail.ts

@@ -0,0 +1,205 @@
+// import { Inject, Service } from 'typedi';
+// import Mail from '@/lib/Mail';
+// import HasTenancyService from '@/services/Tenancy/TenancyService';
+// import {
+//   DEFAULT_ESTIMATE_REMINDER_MAIL_CONTENT,
+//   DEFAULT_ESTIMATE_REMINDER_MAIL_SUBJECT,
+// } from '../constants';
+// import { SaleEstimatesPdf } from '../queries/SaleEstimatesPdf';
+// import { GetSaleEstimate } from '../queries/GetSaleEstimate.service';
+// import {
+//   ISaleEstimateMailPresendEvent,
+//   SaleEstimateMailOptions,
+//   SaleEstimateMailOptionsDTO,
+// } from '@/interfaces';
+// import { ContactMailNotification } from '@/services/MailNotification/ContactMailNotification';
+// import { mergeAndValidateMailOptions } from '@/services/MailNotification/utils';
+// import { EventPublisher } from '@/lib/EventPublisher/EventPublisher';
+// import events from '@/subscribers/events';
+// import { transformEstimateToMailDataArgs } from '../utils';
+
+// @Service()
+// export class SendSaleEstimateMail {
+//   @Inject()
+//   private tenancy: HasTenancyService;
+
+//   @Inject()
+//   private estimatePdf: SaleEstimatesPdf;
+
+//   @Inject()
+//   private getSaleEstimateService: GetSaleEstimate;
+
+//   @Inject()
+//   private contactMailNotification: ContactMailNotification;
+
+//   @Inject('agenda')
+//   private agenda: any;
+
+//   @Inject()
+//   private eventPublisher: EventPublisher;
+
+//   /**
+//    * Triggers the reminder mail of the given sale estimate.
+//    * @param {number} tenantId -
+//    * @param {number} saleEstimateId -
+//    * @param {SaleEstimateMailOptionsDTO} messageOptions -
+//    * @returns {Promise<void>}
+//    */
+//   public async triggerMail(
+//     tenantId: number,
+//     saleEstimateId: number,
+//     messageOptions: SaleEstimateMailOptionsDTO
+//   ): Promise<void> {
+//     const payload = {
+//       tenantId,
+//       saleEstimateId,
+//       messageOptions,
+//     };
+//     await this.agenda.now('sale-estimate-mail-send', payload);
+
+//     // Triggers `onSaleEstimatePreMailSend` event.
+//     await this.eventPublisher.emitAsync(events.saleEstimate.onPreMailSend, {
+//       tenantId,
+//       saleEstimateId,
+//       messageOptions,
+//     } as ISaleEstimateMailPresendEvent);
+//   }
+
+//   /**
+//    * Formate the text of the mail.
+//    * @param {number} tenantId - Tenant id.
+//    * @param {number} estimateId - Estimate id.
+//    * @returns {Promise<Record<string, any>>}
+//    */
+//   public formatterArgs = async (tenantId: number, estimateId: number) => {
+//     const estimate = await this.getSaleEstimateService.getEstimate(
+//       tenantId,
+//       estimateId
+//     );
+//     return transformEstimateToMailDataArgs(estimate);
+//   };
+
+//   /**
+//    * Retrieves the mail options.
+//    * @param {number} tenantId
+//    * @param {number} saleEstimateId
+//    * @returns {Promise<SaleEstimateMailOptions>}
+//    */
+//   public getMailOptions = async (
+//     tenantId: number,
+//     saleEstimateId: number,
+//     defaultSubject: string = DEFAULT_ESTIMATE_REMINDER_MAIL_SUBJECT,
+//     defaultMessage: string = DEFAULT_ESTIMATE_REMINDER_MAIL_CONTENT
+//   ): Promise<SaleEstimateMailOptions> => {
+//     const { SaleEstimate } = this.tenancy.models(tenantId);
+
+//     const saleEstimate = await SaleEstimate.query()
+//       .findById(saleEstimateId)
+//       .throwIfNotFound();
+
+//     const formatArgs = await this.formatterArgs(tenantId, saleEstimateId);
+
+//     const mailOptions =
+//       await this.contactMailNotification.getDefaultMailOptions(
+//         tenantId,
+//         saleEstimate.customerId
+//       );
+//     return {
+//       ...mailOptions,
+//       message: defaultMessage,
+//       subject: defaultSubject,
+//       attachEstimate: true,
+//       formatArgs,
+//     };
+//   };
+
+//   /**
+//    * Formats the given mail options.
+//    * @param {number} tenantId
+//    * @param {number} saleEstimateId
+//    * @param {SaleEstimateMailOptions} mailOptions
+//    * @returns {Promise<SaleEstimateMailOptions>}
+//    */
+//   public formatMailOptions = async (
+//     tenantId: number,
+//     saleEstimateId: number,
+//     mailOptions: SaleEstimateMailOptions
+//   ): Promise<SaleEstimateMailOptions> => {
+//     const formatterArgs = await this.formatterArgs(tenantId, saleEstimateId);
+//     const formattedOptions =
+//       await this.contactMailNotification.formatMailOptions(
+//         tenantId,
+//         mailOptions,
+//         formatterArgs
+//       );
+//     return { ...formattedOptions };
+//   };
+
+//   /**
+//    * Sends the mail notification of the given sale estimate.
+//    * @param {number} tenantId
+//    * @param {number} saleEstimateId
+//    * @param {SaleEstimateMailOptions} messageOptions
+//    * @returns {Promise<void>}
+//    */
+//   public async sendMail(
+//     tenantId: number,
+//     saleEstimateId: number,
+//     messageOptions: SaleEstimateMailOptionsDTO
+//   ): Promise<void> {
+//     const localMessageOpts = await this.getMailOptions(
+//       tenantId,
+//       saleEstimateId
+//     );
+//     // Overrides and validates the given mail options.
+//     const parsedMessageOptions = mergeAndValidateMailOptions(
+//       localMessageOpts,
+//       messageOptions
+//     ) as SaleEstimateMailOptions;
+
+//     const formattedOptions = await this.formatMailOptions(
+//       tenantId,
+//       saleEstimateId,
+//       parsedMessageOptions
+//     );
+//     const mail = new Mail()
+//       .setSubject(formattedOptions.subject)
+//       .setTo(formattedOptions.to)
+//       .setCC(formattedOptions.cc)
+//       .setBCC(formattedOptions.bcc)
+//       .setContent(formattedOptions.message);
+
+//     // Attaches the estimate pdf to the mail.
+//     if (formattedOptions.attachEstimate) {
+//       // Retrieves the estimate pdf and attaches it to the mail.
+//       const [estimatePdfBuffer, estimateFilename] =
+//         await this.estimatePdf.getSaleEstimatePdf(tenantId, saleEstimateId);
+
+//       mail.setAttachments([
+//         {
+//           filename: `${estimateFilename}.pdf`,
+//           content: estimatePdfBuffer,
+//         },
+//       ]);
+//     }
+
+//     const eventPayload = {
+//       tenantId,
+//       saleEstimateId,
+//       messageOptions,
+//       formattedOptions,
+//     };
+//     // Triggers `onSaleEstimateMailSend` event.
+//     await this.eventPublisher.emitAsync(
+//       events.saleEstimate.onMailSend,
+//       eventPayload as ISaleEstimateMailPresendEvent
+//     );
+//     await mail.send();
+
+//     // Triggers `onSaleEstimateMailSent` event.
+//     await this.eventPublisher.emitAsync(
+//       events.saleEstimate.onMailSent,
+//       eventPayload as ISaleEstimateMailPresendEvent
+//     );
+//   }
+// }

packages/server-nest/src/modules/SaleEstimates/commands/SendSaleEstimateMailJob.ts

@@ -0,0 +1,36 @@
+// import Container, { Service } from 'typedi';
+// import { SendSaleEstimateMail } from './SendSaleEstimateMail';
+
+// @Service()
+// export class SendSaleEstimateMailJob {
+//   /**
+//    * Constructor method.
+//    */
+//   constructor(agenda) {
+//     agenda.define(
+//       'sale-estimate-mail-send',
+//       { priority: 'high', concurrency: 2 },
+//       this.handler
+//     );
+//   }
+
+//   /**
+//    * Triggers sending invoice mail.
+//    */
+//   private handler = async (job, done: Function) => {
+//     const { tenantId, saleEstimateId, messageOptions } = job.attrs.data;
+//     const sendSaleEstimateMail = Container.get(SendSaleEstimateMail);
+
+//     try {
+//       await sendSaleEstimateMail.sendMail(
+//         tenantId,
+//         saleEstimateId,
+//         messageOptions
+//       );
+//       done();
+//     } catch (error) {
+//       console.log(error);
+//       done(error);
+//     }
+//   };
+// }

packages/server-nest/src/modules/SaleEstimates/commands/UnlinkConvertedSaleEstimate.service.ts

@@ -0,0 +1,30 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { Knex } from 'knex';
+import { SaleEstimate } from '../models/SaleEstimate';
+
+@Injectable()
+export class UnlinkConvertedSaleEstimate {
+  constructor(
+    @Inject(SaleEstimate.name)
+    private readonly saleEstimateModel: typeof SaleEstimate,
+  ) {}
+
+  /**
+   * Unlink the converted sale estimates from the given sale invoice.
+   * @param {number} invoiceId -
+   * @return {Promise<void>}
+   */
+  public async unlinkConvertedEstimateFromInvoice(
+    invoiceId: number,
+    trx?: Knex.Transaction
+  ): Promise<void> {
+    await this.saleEstimateModel.query(trx)
+      .where({
+        convertedToInvoiceId: invoiceId,
+      })
+      .patch({
+        convertedToInvoiceId: null,
+        convertedToInvoiceAt: null,
+      });
+  }
+}

packages/server-nest/src/modules/SaleEstimates/constants.ts

@@ -0,0 +1,287 @@
+export const DEFAULT_ESTIMATE_REMINDER_MAIL_SUBJECT =
+  'Estimate {Estimate Number} is awaiting your approval';
+export const DEFAULT_ESTIMATE_REMINDER_MAIL_CONTENT = `<p>Dear {Customer Name}</p>
+<p>Thank you for your business, You can view or print your estimate from attachements.</p>
+<p>
+Estimate <strong>#{Estimate Number}</strong><br />
+Expiration Date : <strong>{Estimate Expiration Date}</strong><br />
+Amount   : <strong>{Estimate Amount}</strong></br />
+</p>
+
+<p>
+<i>Regards</i><br />
+<i>{Company Name}</i>
+</p>
+`;
+
+export const ERRORS = {
+  SALE_ESTIMATE_NOT_FOUND: 'SALE_ESTIMATE_NOT_FOUND',
+  SALE_ESTIMATE_NUMBER_EXISTANCE: 'SALE_ESTIMATE_NUMBER_EXISTANCE',
+  SALE_ESTIMATE_CONVERTED_TO_INVOICE: 'SALE_ESTIMATE_CONVERTED_TO_INVOICE',
+  SALE_ESTIMATE_NOT_DELIVERED: 'SALE_ESTIMATE_NOT_DELIVERED',
+  SALE_ESTIMATE_ALREADY_REJECTED: 'SALE_ESTIMATE_ALREADY_REJECTED',
+  CUSTOMER_HAS_SALES_ESTIMATES: 'CUSTOMER_HAS_SALES_ESTIMATES',
+  SALE_ESTIMATE_NO_IS_REQUIRED: 'SALE_ESTIMATE_NO_IS_REQUIRED',
+  SALE_ESTIMATE_ALREADY_DELIVERED: 'SALE_ESTIMATE_ALREADY_DELIVERED',
+  SALE_ESTIMATE_ALREADY_APPROVED: 'SALE_ESTIMATE_ALREADY_APPROVED',
+};
+
+export const DEFAULT_VIEW_COLUMNS = [];
+export const DEFAULT_VIEWS = [
+  {
+    name: 'Draft',
+    slug: 'draft',
+    rolesLogicExpression: '1',
+    roles: [
+      { index: 1, fieldKey: 'status', comparator: 'equals', value: 'draft' },
+    ],
+    columns: DEFAULT_VIEW_COLUMNS,
+  },
+  {
+    name: 'Delivered',
+    slug: 'delivered',
+    rolesLogicExpression: '1',
+    roles: [
+      {
+        index: 1,
+        fieldKey: 'status',
+        comparator: 'equals',
+        value: 'delivered',
+      },
+    ],
+    columns: DEFAULT_VIEW_COLUMNS,
+  },
+  {
+    name: 'Approved',
+    slug: 'approved',
+    rolesLogicExpression: '1',
+    roles: [
+      {
+        index: 1,
+        fieldKey: 'status',
+        comparator: 'equals',
+        value: 'approved',
+      },
+    ],
+    columns: DEFAULT_VIEW_COLUMNS,
+  },
+  {
+    name: 'Rejected',
+    slug: 'rejected',
+    rolesLogicExpression: '1',
+    roles: [
+      {
+        index: 1,
+        fieldKey: 'status',
+        comparator: 'equals',
+        value: 'rejected',
+      },
+    ],
+    columns: DEFAULT_VIEW_COLUMNS,
+  },
+  {
+    name: 'Invoiced',
+    slug: 'invoiced',
+    rolesLogicExpression: '1',
+    roles: [
+      {
+        index: 1,
+        fieldKey: 'status',
+        comparator: 'equals',
+        value: 'invoiced',
+      },
+    ],
+    columns: DEFAULT_VIEW_COLUMNS,
+  },
+  {
+    name: 'Expired',
+    slug: 'expired',
+    rolesLogicExpression: '1',
+    roles: [
+      {
+        index: 1,
+        fieldKey: 'status',
+        comparator: 'equals',
+        value: 'expired',
+      },
+    ],
+    columns: DEFAULT_VIEW_COLUMNS,
+  },
+  {
+    name: 'Closed',
+    slug: 'closed',
+    rolesLogicExpression: '1',
+    roles: [
+      {
+        index: 1,
+        fieldKey: 'status',
+        comparator: 'equals',
+        value: 'closed',
+      },
+    ],
+    columns: DEFAULT_VIEW_COLUMNS,
+  },
+];
+
+export const SaleEstimatesSampleData = [
+  {
+    Customer: 'Ambrose Olson',
+    'Estimate Date': '2024-01-01',
+    'Expiration Date': '2025-01-01',
+    'Estimate No.': 'EST-0001',
+    'Reference No.': 'REF-0001',
+    Currency: '',
+    'Exchange Rate': '',
+    Note: 'Vel autem quis aut ab.',
+    'Terms & Conditions': 'Provident illo architecto sit iste in.',
+    Delivered: 'T',
+    'Item Name': 'Hettinger, Schumm and Bartoletti',
+    Quantity: 1000,
+    Rate: 20,
+    'Line Description': 'Rem esse doloremque praesentium harum maiores.',
+  },
+  {
+    Customer: 'Ambrose Olson',
+    'Estimate Date': '2024-01-02',
+    'Expiration Date': '2025-01-02',
+    'Estimate No.': 'EST-0002',
+    'Reference No.': 'REF-0002',
+    Currency: '',
+    'Exchange Rate': '',
+    Note: 'Tempora voluptas odio deleniti rerum vitae consequatur nihil quis sunt.',
+    'Terms & Conditions': 'Ut eum incidunt quibusdam rerum vero.',
+    Delivered: 'T',
+    'Item Name': 'Hettinger, Schumm and Bartoletti',
+    Quantity: 1000,
+    Rate: 20,
+    'Line Description': 'Qui voluptate aliquam maxime aliquam.',
+  },
+  {
+    Customer: 'Ambrose Olson',
+    'Estimate Date': '2024-01-03',
+    'Expiration Date': '2025-01-03',
+    'Estimate No.': 'EST-0003',
+    'Reference No.': 'REF-0003',
+    Currency: '',
+    'Exchange Rate': '',
+    Note: 'Quia voluptatem delectus doloremque.',
+    'Terms & Conditions': 'Facilis porro vitae ratione.',
+    Delivered: 'T',
+    'Item Name': 'Hettinger, Schumm and Bartoletti',
+    Quantity: 1000,
+    Rate: 20,
+    'Line Description': 'Qui suscipit ducimus qui qui.',
+  },
+];
+
+export const defaultEstimatePdfBrandingAttributes = {
+  primaryColor: '#000',
+  secondaryColor: '#000',
+
+  // # Company logo
+  showCompanyLogo: true,
+  companyLogoUri: '',
+  companyLogoKey: '',
+
+  companyName: '',
+
+  customerAddress: '',
+  companyAddress: '',
+  showCustomerAddress: true,
+  showCompanyAddress: true,
+  billedToLabel: 'Billed To',
+
+  total: '$1000.00',
+  totalLabel: 'Total',
+  showTotal: true,
+
+  subtotal: '1000/00',
+  subtotalLabel: 'Subtotal',
+  showSubtotal: true,
+
+  showCustomerNote: true,
+  customerNote:
+    'It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout.',
+  customerNoteLabel: 'Customer Note',
+
+  showTermsConditions: true,
+  termsConditions:
+    'It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout.',
+  termsConditionsLabel: 'Terms & Conditions',
+
+  lines: [
+    {
+      item: 'Simply dummy text',
+      description: 'Simply dummy text of the printing and typesetting',
+      rate: '1',
+      quantity: '1000',
+      total: '$1000.00',
+    },
+  ],
+  showEstimateNumber: true,
+  estimateNumberLabel: 'Estimate Number',
+  estimateNumebr: '346D3D40-0001',
+
+  estimateDate: 'September 3, 2024',
+  showEstimateDate: true,
+  estimateDateLabel: 'Estimate Date',
+
+  expirationDateLabel: 'Expiration Date',
+  showExpirationDate: true,
+  expirationDate: 'September 3, 2024',
+};
+
+interface EstimatePdfBrandingLineItem {
+  item: string;
+  description: string;
+  rate: string;
+  quantity: string;
+  total: string;
+}
+
+export interface EstimatePdfBrandingAttributes {
+  primaryColor: string;
+  secondaryColor: string;
+  showCompanyLogo: boolean;
+  companyLogo: string;
+  companyName: string;
+
+  // Customer Address
+  showCustomerAddress: boolean;
+  customerAddress: string;
+
+  // Company Address
+  showCompanyAddress: boolean;
+  companyAddress: string;
+  billedToLabel: string;
+
+  total: string;
+  totalLabel: string;
+  showTotal: boolean;
+
+  subtotal: string;
+  subtotalLabel: string;
+  showSubtotal: boolean;
+
+  showCustomerNote: boolean;
+  customerNote: string;
+  customerNoteLabel: string;
+
+  showTermsConditions: boolean;
+  termsConditions: string;
+  termsConditionsLabel: string;
+
+  lines: EstimatePdfBrandingLineItem[];
+
+  showEstimateNumber: boolean;
+  estimateNumberLabel: string;
+  estimateNumebr: string;
+
+  estimateDate: string;
+  showEstimateDate: boolean;
+  estimateDateLabel: string;
+
+  expirationDateLabel: string;
+  showExpirationDate: boolean;
+  expirationDate: string;
+}

packages/server-nest/src/modules/SaleEstimates/models/SaleEstimate.ts

@@ -0,0 +1,318 @@
+import { BaseModel } from '@/models/Model';
+import moment from 'moment';
+import { Model } from 'objection';
+// import TenantModel from 'models/TenantModel';
+// import { defaultToTransform } from 'utils';
+// import SaleEstimateSettings from './SaleEstimate.Settings';
+// import ModelSetting from './ModelSetting';
+// import CustomViewBaseModel from './CustomViewBaseModel';
+// import { DEFAULT_VIEWS } from '@/services/Sales/Estimates/constants';
+// import ModelSearchable from './ModelSearchable';
+
+export class SaleEstimate extends BaseModel {
+  exchangeRate!: number;
+  amount!: number;
+
+  currencyCode!: string;
+
+  customerId!: number;
+  estimateDate!: Date | string;
+  expirationDate!: Date | string;
+  reference!: string;
+  estimateNumber!: string;
+  note!: string;
+  termsConditions!: string;
+  sendToEmail!: string;
+
+  deliveredAt!: Date | string;
+  approvedAt!: Date | string;
+  rejectedAt!: Date | string;
+
+  userId!: number;
+
+  convertedToInvoiceId!: number;
+  convertedToInvoiceAt!: Date | string;
+
+  createdAt?: Date;
+  updatedAt?: Date | null;
+
+  branchId?: number;
+  warehouseId?: number;
+
+  /**
+   * Table name
+   */
+  static get tableName() {
+    return 'sales_estimates';
+  }
+
+  /**
+   * Timestamps columns.
+   */
+  get timestamps() {
+    return ['createdAt', 'updatedAt'];
+  }
+
+  /**
+   * Virtual attributes.
+   */
+  static get virtualAttributes() {
+    return [
+      'localAmount',
+      'isDelivered',
+      'isExpired',
+      'isConvertedToInvoice',
+      'isApproved',
+      'isRejected',
+    ];
+  }
+
+  /**
+   * Estimate amount in local currency.
+   * @returns {number}
+   */
+  get localAmount() {
+    return this.amount * this.exchangeRate;
+  }
+
+  /**
+   * Detarmines whether the sale estimate converted to sale invoice.
+   * @return {boolean}
+   */
+  get isConvertedToInvoice() {
+    return !!(this.convertedToInvoiceId && this.convertedToInvoiceAt);
+  }
+
+  /**
+   * Detarmines whether the estimate is delivered.
+   * @return {boolean}
+   */
+  get isDelivered() {
+    return !!this.deliveredAt;
+  }
+
+  /**
+   * Detarmines whether the estimate is expired.
+   * @return {boolean}
+   */
+  get isExpired() {
+    // return defaultToTransform(
+    //   this.expirationDate,
+    //   moment().isAfter(this.expirationDate, 'day'),
+    //   false
+    // );i
+
+    return false;
+  }
+
+  /**
+   * Detarmines whether the estimate is approved.
+   * @return {boolean}
+   */
+  get isApproved() {
+    return !!this.approvedAt;
+  }
+
+  /**
+   * Detarmines whether the estimate is reject.
+   * @return {boolean}
+   */
+  get isRejected() {
+    return !!this.rejectedAt;
+  }
+
+  /**
+   * Allows to mark model as resourceable to viewable and filterable.
+   */
+  static get resourceable() {
+    return true;
+  }
+
+  /**
+   * Model modifiers.
+   */
+  static get modifiers() {
+    return {
+      /**
+       * Filters the drafted estimates transactions.
+       */
+      draft(query) {
+        query.where('delivered_at', null);
+      },
+      /**
+       * Filters the delivered estimates transactions.
+       */
+      delivered(query) {
+        query.whereNot('delivered_at', null);
+      },
+      /**
+       * Filters the expired estimates transactions.
+       */
+      expired(query) {
+        query.where('expiration_date', '<', moment().format('YYYY-MM-DD'));
+      },
+      /**
+       * Filters the rejected estimates transactions.
+       */
+      rejected(query) {
+        query.whereNot('rejected_at', null);
+      },
+      /**
+       * Filters the invoiced estimates transactions.
+       */
+      invoiced(query) {
+        query.whereNot('converted_to_invoice_at', null);
+      },
+      /**
+       * Filters the approved estimates transactions.
+       */
+      approved(query) {
+        query.whereNot('approved_at', null);
+      },
+      /**
+       * Sorting the estimates orders by delivery status.
+       */
+      orderByStatus(query, order) {
+        query.orderByRaw(`delivered_at is null ${order}`);
+      },
+      /**
+       * Filtering the estimates oreders by status field.
+       */
+      filterByStatus(query, filterType) {
+        switch (filterType) {
+          case 'draft':
+            query.modify('draft');
+            break;
+          case 'delivered':
+            query.modify('delivered');
+            break;
+          case 'approved':
+            query.modify('approved');
+            break;
+          case 'rejected':
+            query.modify('rejected');
+            break;
+          case 'invoiced':
+            query.modify('invoiced');
+            break;
+          case 'expired':
+            query.modify('expired');
+            break;
+        }
+      },
+    };
+  }
+
+  /**
+   * Relationship mapping.
+   */
+  static get relationMappings() {
+    const { ItemEntry } = require('../../Items/models/ItemEntry');
+    // const Customer = require('models/Customer');
+    // const Branch = require('models/Branch');
+    // const Warehouse = require('models/Warehouse');
+    // const Document = require('models/Document');
+
+    return {
+      //   customer: {
+      //     relation: Model.BelongsToOneRelation,
+      //     modelClass: Customer.default,
+      //     join: {
+      //       from: 'sales_estimates.customerId',
+      //       to: 'contacts.id',
+      //     },
+      //     filter(query) {
+      //       query.where('contact_service', 'customer');
+      //     },
+      //   },
+      entries: {
+        relation: Model.HasManyRelation,
+        modelClass: ItemEntry,
+
+        join: {
+          from: 'sales_estimates.id',
+          to: 'items_entries.referenceId',
+        },
+        filter(builder) {
+          builder.where('reference_type', 'SaleEstimate');
+          builder.orderBy('index', 'ASC');
+        },
+      },
+
+      //   /**
+      //    * Sale estimate may belongs to branch.
+      //    */
+      //   branch: {
+      //     relation: Model.BelongsToOneRelation,
+      //     modelClass: Branch.default,
+      //     join: {
+      //       from: 'sales_estimates.branchId',
+      //       to: 'branches.id',
+      //     },
+      //   },
+
+      //   /**
+      //    * Sale estimate may has associated warehouse.
+      //    */
+      //   warehouse: {
+      //     relation: Model.BelongsToOneRelation,
+      //     modelClass: Warehouse.default,
+      //     join: {
+      //       from: 'sales_estimates.warehouseId',
+      //       to: 'warehouses.id',
+      //     },
+      //   },
+
+      //   /**
+      //    * Sale estimate transaction may has many attached attachments.
+      //    */
+      //   attachments: {
+      //     relation: Model.ManyToManyRelation,
+      //     modelClass: Document.default,
+      //     join: {
+      //       from: 'sales_estimates.id',
+      //       through: {
+      //         from: 'document_links.modelId',
+      //         to: 'document_links.documentId',
+      //       },
+      //       to: 'documents.id',
+      //     },
+      //     filter(query) {
+      //       query.where('model_ref', 'SaleEstimate');
+      //     },
+      // },
+    };
+  }
+
+  /**
+   * Model settings.
+   */
+  // static get meta() {
+  // return SaleEstimateSettings;
+  // }
+
+  /**
+   * Retrieve the default custom views, roles and columns.
+   */
+  // static get defaultViews() {
+  // return DEFAULT_VIEWS;
+  // }
+
+  /**
+   * Model search roles.
+   */
+  static get searchRoles() {
+    return [
+      { fieldKey: 'amount', comparator: 'equals' },
+      { condition: 'or', fieldKey: 'estimate_number', comparator: 'contains' },
+      { condition: 'or', fieldKey: 'reference_no', comparator: 'contains' },
+    ];
+  }
+
+  /**
+   * Prevents mutate base currency since the model is not empty.
+   */
+  static get preventMutateBaseCurrency() {
+    return true;
+  }
+}

packages/server-nest/src/modules/SaleEstimates/queries/GetSaleEstimate.service.ts

@@ -0,0 +1,49 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { SaleEstimateTransfromer } from './SaleEstimate.transformer';
+import { SaleEstimateValidators } from '../commands/SaleEstimateValidators.service';
+import { TransformerInjectable } from '@/modules/Transformer/TransformerInjectable.service';
+import { SaleEstimate } from '../models/SaleEstimate';
+import { EventEmitter2 } from '@nestjs/event-emitter';
+import { events } from '@/common/events/events';
+
+@Injectable()
+export class GetSaleEstimate {
+  constructor(
+    @Inject(SaleEstimate.name)
+    private readonly saleEstimateModel: typeof SaleEstimate,
+    private readonly transformer: TransformerInjectable,
+    private readonly validators: SaleEstimateValidators,
+    private readonly eventPublisher: EventEmitter2,
+  ) {}
+
+  /**
+   * Retrieve the estimate details with associated entries.
+   * @async
+   * @param {Integer} estimateId
+   */
+  public async getEstimate(estimateId: number) {
+    const estimate = await this.saleEstimateModel.query()
+      .findById(estimateId)
+      .withGraphFetched('entries.item')
+      .withGraphFetched('customer')
+      .withGraphFetched('branch')
+      .withGraphFetched('attachments');
+
+    // Validates the estimate existance.
+    this.validators.validateEstimateExistance(estimate);
+
+    // Transformes sale estimate model to POJO.
+    const transformed = await this.transformer.transform(
+      estimate,
+      new SaleEstimateTransfromer()
+    );
+    const eventPayload = { saleEstimateId: estimateId };
+
+    // Triggers `onSaleEstimateViewed` event.
+    await this.eventPublisher.emitAsync(
+      events.saleEstimate.onViewed,
+      eventPayload
+    );
+    return transformed;
+  }
+}

packages/server-nest/src/modules/SaleEstimates/queries/GetSaleEstimateState.service.ts

@@ -0,0 +1,26 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { PdfTemplateModel } from '@/modules/PdfTemplate/models/PdfTemplate';
+import { ISaleEstimateState } from '../types/SaleEstimates.types';
+
+@Injectable()
+export class GetSaleEstimateState {
+  constructor(
+    @Inject(PdfTemplateModel.name)
+    private pdfTemplateModel: typeof PdfTemplateModel,
+  ) {}
+
+  /**
+   * Retrieves the create/edit sale estimate state.
+   * @return {Promise<ISaleEstimateState>}
+   */
+  public async getSaleEstimateState(): Promise<ISaleEstimateState> {
+    const defaultPdfTemplate = await this.pdfTemplateModel
+      .query()
+      .findOne({ resource: 'SaleEstimate' })
+      .modify('default');
+
+    return {
+      defaultTemplateId: defaultPdfTemplate?.id,
+    };
+  }
+}

packages/server-nest/src/modules/SaleEstimates/queries/GetSaleEstimates.ts

@@ -0,0 +1,79 @@
+// import * as R from 'ramda';
+// import { Inject, Service } from 'typedi';
+// import {
+//   IFilterMeta,
+//   IPaginationMeta,
+//   ISaleEstimate,
+//   ISalesEstimatesFilter,
+// } from '@/interfaces';
+// import HasTenancyService from '@/services/Tenancy/TenancyService';
+// import DynamicListingService from '@/services/DynamicListing/DynamicListService';
+// import { TransformerInjectable } from '@/lib/Transformer/TransformerInjectable';
+// import { SaleEstimateDTOTransformer } from '../commands/SaleEstimateDTOTransformer';
+// import { SaleEstimateTransfromer } from './SaleEstimate.transformer';
+
+// @Service()
+// export class GetSaleEstimates {
+//   @Inject()
+//   private tenancy: HasTenancyService;
+
+//   @Inject()
+//   private dynamicListService: DynamicListingService;
+
+//   @Inject()
+//   private transformer: TransformerInjectable;
+
+//   /**
+//    * Retrieves estimates filterable and paginated list.
+//    * @param {number} tenantId -
+//    * @param {IEstimatesFilter} estimatesFilter -
+//    */
+//   public async getEstimates(
+//     tenantId: number,
+//     filterDTO: ISalesEstimatesFilter
+//   ): Promise<{
+//     salesEstimates: ISaleEstimate[];
+//     pagination: IPaginationMeta;
+//     filterMeta: IFilterMeta;
+//   }> {
+//     const { SaleEstimate } = this.tenancy.models(tenantId);
+
+//     // Parses filter DTO.
+//     const filter = this.parseListFilterDTO(filterDTO);
+
+//     // Dynamic list service.
+//     const dynamicFilter = await this.dynamicListService.dynamicList(
+//       tenantId,
+//       SaleEstimate,
+//       filter
+//     );
+//     const { results, pagination } = await SaleEstimate.query()
+//       .onBuild((builder) => {
+//         builder.withGraphFetched('customer');
+//         builder.withGraphFetched('entries');
+//         builder.withGraphFetched('entries.item'); 
+//         dynamicFilter.buildQuery()(builder);
+//         filterDTO?.filterQuery && filterDTO?.filterQuery(builder);
+//       })
+//       .pagination(filter.page - 1, filter.pageSize);
+
+//     const transformedEstimates = await this.transformer.transform(
+//       tenantId,
+//       results,
+//       new SaleEstimateTransfromer()
+//     );
+//     return {
+//       salesEstimates: transformedEstimates,
+//       pagination,
+//       filterMeta: dynamicFilter.getResponseMeta(),
+//     };
+//   }
+
+//   /**
+//    * Parses the sale receipts list filter DTO.
+//    * @param filterDTO
+//    */
+//   private parseListFilterDTO(filterDTO) {
+//     return R.compose(this.dynamicListService.parseStringifiedFilter)(filterDTO);
+//   }
+// }

packages/server-nest/src/modules/SaleEstimates/queries/SaleEstimate.transformer.ts

@@ -0,0 +1,122 @@
+// import { Transformer } from '@/lib/Transformer/Transformer';
+// import { ItemEntryTransformer } from '../Invoices/ItemEntryTransformer';
+// import { AttachmentTransformer } from '@/services/Attachments/AttachmentTransformer';
+
+import { Transformer } from '@/modules/Transformer/Transformer';
+import { SaleEstimate } from '../models/SaleEstimate';
+import { ItemEntryTransformer } from '@/modules/TransactionItemEntry/ItemEntry.transformer';
+
+export class SaleEstimateTransfromer extends Transformer {
+  /**
+   * Include these attributes to sale invoice object.
+   * @returns {Array}
+   */
+  public includeAttributes = (): string[] => {
+    return [
+      'formattedSubtotal',
+      'formattedAmount',
+      'formattedEstimateDate',
+      'formattedExpirationDate',
+      'formattedDeliveredAtDate',
+      'formattedApprovedAtDate',
+      'formattedRejectedAtDate',
+      'formattedCreatedAt',
+      'entries',
+      'attachments',
+    ];
+  };
+
+  /**
+   * Retrieve formatted estimate date.
+   * @param {ISaleEstimate} invoice
+   * @returns {String}
+   */
+  protected formattedEstimateDate = (estimate: SaleEstimate): string => {
+    return this.formatDate(estimate.estimateDate);
+  };
+
+  /**
+   * Retrieve formatted estimate date.
+   * @param {ISaleEstimate} invoice
+   * @returns {String}
+   */
+  protected formattedExpirationDate = (estimate: SaleEstimate): string => {
+    return this.formatDate(estimate.expirationDate);
+  };
+
+  /**
+   * Retrieves the formatted estimate created at.
+   * @param {ISaleEstimate} estimate -
+   * @returns {string}
+   */
+  protected formattedCreatedAt = (estimate: SaleEstimate): string => {
+    return this.formatDate(estimate.createdAt);
+  };
+
+  /**
+   * Retrieve formatted estimate date.
+   * @param {ISaleEstimate} invoice
+   * @returns {String}
+   */
+  protected formattedDeliveredAtDate = (estimate: SaleEstimate): string => {
+    return this.formatDate(estimate.deliveredAt);
+  };
+
+  /**
+   * Retrieve formatted estimate date.
+   * @param {ISaleEstimate} invoice
+   * @returns {String}
+   */
+  protected formattedApprovedAtDate = (estimate: SaleEstimate): string => {
+    return this.formatDate(estimate.approvedAt);
+  };
+
+  /**
+   * Retrieve formatted estimate date.
+   * @param {ISaleEstimate} invoice
+   * @returns {String}
+   */
+  protected formattedRejectedAtDate = (estimate: SaleEstimate): string => {
+    return this.formatDate(estimate.rejectedAt);
+  };
+
+  /**
+   * Retrieve formatted invoice amount.
+   * @param {ISaleEstimate} estimate
+   * @returns {string}
+   */
+  protected formattedAmount = (estimate: SaleEstimate): string => {
+    return this.formatNumber(estimate.amount, {
+      currencyCode: estimate.currencyCode,
+    });
+  };
+
+  /**
+   * Retrieves the formatted invoice subtotal.
+   * @param {ISaleEstimate} estimate
+   * @returns {string}
+   */
+  protected formattedSubtotal = (estimate: SaleEstimate): string => {
+    return this.formatNumber(estimate.amount, { money: false });
+  };
+
+  /**
+   * Retrieves the entries of the sale estimate.
+   * @param {ISaleEstimate} estimate
+   * @returns {}
+   */
+  protected entries = (estimate: SaleEstimate) => {
+    // return this.item(estimate.entries, new ItemEntryTransformer(), {
+    //   currencyCode: estimate.currencyCode,
+    // });
+  };
+
+  /**
+   * Retrieves the sale estimate attachments.
+   * @param {ISaleInvoice} invoice
+   * @returns
+   */
+  protected attachments = (estimate: SaleEstimate) => {
+    // return this.item(estimate.attachments, new AttachmentTransformer());
+  };
+}

packages/server-nest/src/modules/SaleEstimates/queries/SaleEstimatesPdf.ts

@@ -0,0 +1,116 @@
+// import { Inject, Service } from 'typedi';
+// import { ChromiumlyTenancy } from '@/services/ChromiumlyTenancy/ChromiumlyTenancy';
+// import { TemplateInjectable } from '@/services/TemplateInjectable/TemplateInjectable';
+// import { GetSaleEstimate } from './GetSaleEstimate.service';
+// import HasTenancyService from '@/services/Tenancy/TenancyService';
+// import { SaleEstimatePdfTemplate } from '../Invoices/SaleEstimatePdfTemplate';
+// import { transformEstimateToPdfTemplate } from '../utils';
+// import { EstimatePdfBrandingAttributes } from '../constants';
+// import events from '@/subscribers/events';
+// import { EventPublisher } from '@/lib/EventPublisher/EventPublisher';
+
+// @Service()
+// export class SaleEstimatesPdf {
+//   @Inject()
+//   private tenancy: HasTenancyService;
+
+//   @Inject()
+//   private chromiumlyTenancy: ChromiumlyTenancy;
+
+//   @Inject()
+//   private templateInjectable: TemplateInjectable;
+
+//   @Inject()
+//   private getSaleEstimate: GetSaleEstimate;
+
+//   @Inject()
+//   private estimatePdfTemplate: SaleEstimatePdfTemplate;
+
+//   @Inject()
+//   private eventPublisher: EventPublisher;
+
+//   /**
+//    * Retrieve sale invoice pdf content.
+//    * @param {number} tenantId -
+//    * @param {ISaleInvoice} saleInvoice -
+//    */
+//   public async getSaleEstimatePdf(
+//     tenantId: number,
+//     saleEstimateId: number
+//   ): Promise<[Buffer, string]> {
+//     const filename = await this.getSaleEstimateFilename(
+//       tenantId,
+//       saleEstimateId
+//     );
+//     const brandingAttributes = await this.getEstimateBrandingAttributes(
+//       tenantId,
+//       saleEstimateId
+//     );
+//     const htmlContent = await this.templateInjectable.render(
+//       tenantId,
+//       'modules/estimate-regular',
+//       brandingAttributes
+//     );
+//     const content = await this.chromiumlyTenancy.convertHtmlContent(
+//       tenantId,
+//       htmlContent
+//     );
+//     const eventPayload = { tenantId, saleEstimateId };
+
+//     // Triggers the `onSaleEstimatePdfViewed` event.
+//     await this.eventPublisher.emitAsync(
+//       events.saleEstimate.onPdfViewed,
+//       eventPayload
+//     );
+//     return [content, filename];
+//   }
+
+//   /**
+//    * Retrieves the filename file document of the given estimate.
+//    * @param {number} tenantId
+//    * @param {number} estimateId
+//    * @returns {Promise<string>}
+//    */
+//   private async getSaleEstimateFilename(tenantId: number, estimateId: number) {
+//     const { SaleEstimate } = this.tenancy.models(tenantId);
+
+//     const estimate = await SaleEstimate.query().findById(estimateId);
+
+//     return `Estimate-${estimate.estimateNumber}`;
+//   }
+
+//   /**
+//    * Retrieves the given estimate branding attributes.
+//    * @param {number} tenantId - Tenant id.
+//    * @param {number} estimateId - Estimate id.
+//    * @returns {Promise<EstimatePdfBrandingAttributes>}
+//    */
+//   async getEstimateBrandingAttributes(
+//     tenantId: number,
+//     estimateId: number
+//   ): Promise<EstimatePdfBrandingAttributes> {
+//     const { PdfTemplate } = this.tenancy.models(tenantId);
+//     const saleEstimate = await this.getSaleEstimate.getEstimate(
+//       tenantId,
+//       estimateId
+//     );
+//     // Retrieve the invoice template id of not found get the default template id.
+//     const templateId =
+//       saleEstimate.pdfTemplateId ??
+//       (
+//         await PdfTemplate.query().findOne({
+//           resource: 'SaleEstimate',
+//           default: true,
+//         })
+//       )?.id;
+//     const brandingTemplate =
+//       await this.estimatePdfTemplate.getEstimatePdfTemplate(
+//         tenantId,
+//         templateId
+//       );
+//     return {
+//       ...brandingTemplate.attributes,
+//       ...transformEstimateToPdfTemplate(saleEstimate),
+//     };
+//   }
+// }

packages/server-nest/src/modules/SaleEstimates/subscribers/SaleEstimateMarkApprovedOnMailSent.ts

@@ -0,0 +1,35 @@
+// import { ERRORS } from '../constants';
+// import { OnEvent } from '@nestjs/event-emitter';
+// import { Injectable } from '@nestjs/common';
+// import { DeliverSaleEstimateService } from '../commands/DeliverSaleEstimate.service';
+// import { events } from '@/common/events/events';
+// import { ISaleEstimateMailPresendEvent } from '../types/SaleEstimates.types';
+// import { ServiceError } from '@/modules/Items/ServiceError';
+
+// @Injectable()
+// export class SaleEstimateMarkApprovedOnMailSentSubscriber {
+//   constructor(
+//     private readonly deliverEstimateService: DeliverSaleEstimateService,
+//   ) {}
+
+//   /**
+//    * Marks the given estimate approved on submitting mail.
+//    * @param {ISaleEstimateMailPresendEvent}
+//    */
+//   @OnEvent(events.saleEstimate.onPreMailSend)
+//   public async markEstimateApproved({
+//     saleEstimateId,
+//   }: ISaleEstimateMailPresendEvent) {
+//     try {
+//       await this.deliverEstimateService.deliverSaleEstimate(saleEstimateId);
+//     } catch (error) {
+//       if (
+//         error instanceof ServiceError &&
+//         error.errorType === ERRORS.SALE_ESTIMATE_ALREADY_DELIVERED
+//       ) {
+//       } else {
+//         throw error;
+//       }
+//     }
+//   }
+// }

packages/server-nest/src/modules/SaleEstimates/types/SaleEstimates.types.ts

@@ -0,0 +1,122 @@
+import { Knex } from 'knex';
+// import { CommonMailOptions, CommonMailOptionsDTO } from './Mailable';
+// import { AttachmentLinkDTO } from './Attachments';
+import { SaleEstimate } from '../models/SaleEstimate';
+import { IItemEntryDTO } from '@/modules/TransactionItemEntry/ItemEntry.types';
+import { AttachmentLinkDTO } from '@/modules/Attachments/Attachments.types';
+
+export interface ISaleEstimateDTO {
+  customerId: number;
+  exchangeRate?: number;
+  estimateDate?: Date;
+  reference?: string;
+  estimateNumber?: string;
+  entries: IItemEntryDTO[];
+  note: string;
+  termsConditions: string;
+  sendToEmail: string;
+  delivered: boolean;
+
+  branchId?: number;
+  warehouseId?: number;
+  attachments?: AttachmentLinkDTO[];
+}
+
+// export interface ISalesEstimatesFilter extends IDynamicListFilterDTO {
+//   stringifiedFilterRoles?: string;
+//   filterQuery?: (q: any) => void;
+// }
+
+export interface ISaleEstimateCreatedPayload {
+  // tenantId: number;
+  saleEstimate: SaleEstimate;
+  saleEstimateId: number;
+  saleEstimateDTO: ISaleEstimateDTO;
+  trx?: Knex.Transaction;
+}
+
+export interface ISaleEstimateCreatingPayload {
+  estimateDTO: ISaleEstimateDTO;
+  tenantId: number;
+  trx: Knex.Transaction;
+}
+
+export interface ISaleEstimateEditedPayload {
+  // tenantId: number;
+  estimateId: number;
+  saleEstimate: SaleEstimate;
+  oldSaleEstimate: SaleEstimate;
+  estimateDTO: ISaleEstimateDTO;
+  trx?: Knex.Transaction;
+}
+
+export interface ISaleEstimateEditingPayload {
+  // tenantId: number;
+  oldSaleEstimate: SaleEstimate;
+  estimateDTO: ISaleEstimateDTO;
+  trx: Knex.Transaction;
+}
+
+export interface ISaleEstimateDeletedPayload {
+  // tenantId: number;
+  saleEstimateId: number;
+  oldSaleEstimate: SaleEstimate;
+  trx: Knex.Transaction;
+}
+
+export interface ISaleEstimateDeletingPayload {
+  // tenantId: number;
+  oldSaleEstimate: SaleEstimate;
+  trx: Knex.Transaction;
+}
+
+export interface ISaleEstimateEventDeliveredPayload {
+  // tenantId: number;
+  saleEstimate: SaleEstimate;
+  trx: Knex.Transaction;
+}
+
+export interface ISaleEstimateEventDeliveringPayload {
+  // tenantId: number;
+  oldSaleEstimate: SaleEstimate;
+  trx: Knex.Transaction;
+}
+
+export enum SaleEstimateAction {
+  Create = 'Create',
+  Edit = 'Edit',
+  Delete = 'Delete',
+  View = 'View',
+  NotifyBySms = 'NotifyBySms',
+}
+
+export interface ISaleEstimateApprovingEvent {
+  // tenantId: number;
+  oldSaleEstimate: SaleEstimate;
+  trx: Knex.Transaction;
+}
+
+export interface ISaleEstimateApprovedEvent {
+  // tenantId: number;
+  oldSaleEstimate: SaleEstimate;
+  saleEstimate: SaleEstimate;
+  trx: Knex.Transaction;
+}
+
+// export interface SaleEstimateMailOptions extends CommonMailOptions {
+//   attachEstimate?: boolean;
+// }
+
+// export interface SaleEstimateMailOptionsDTO extends CommonMailOptionsDTO {
+//   attachEstimate?: boolean;
+// }
+
+// export interface ISaleEstimateMailPresendEvent {
+//   // tenantId: number;
+//   saleEstimateId: number;
+//   messageOptions: SaleEstimateMailOptionsDTO;
+// }
+
+export interface ISaleEstimateState {
+  defaultTemplateId: number;
+}

packages/server-nest/src/modules/SaleEstimates/utils.ts

@@ -0,0 +1,34 @@
+import { contactAddressTextFormat } from '@/utils/address-text-format';
+import { EstimatePdfBrandingAttributes } from './constants';
+
+export const transformEstimateToPdfTemplate = (
+  estimate
+): Partial<EstimatePdfBrandingAttributes> => {
+  return {
+    expirationDate: estimate.formattedExpirationDate,
+    estimateNumebr: estimate.estimateNumber,
+    estimateDate: estimate.formattedEstimateDate,
+    lines: estimate.entries.map((entry) => ({
+      item: entry.item.name,
+      description: entry.description,
+      rate: entry.rateFormatted,
+      quantity: entry.quantityFormatted,
+      total: entry.totalFormatted,
+    })),
+    total: estimate.formattedSubtotal,
+    subtotal: estimate.formattedSubtotal,
+    customerNote: estimate.note,
+    termsConditions: estimate.termsConditions,
+    customerAddress: contactAddressTextFormat(estimate.customer),
+  };
+};
+
+export const transformEstimateToMailDataArgs = (estimate: any) => {
+  return {
+    'Customer Name': estimate.customer.displayName,
+    'Estimate Number': estimate.estimateNumber,
+    'Estimate Date': estimate.formattedEstimateDate,
+    'Estimate Amount': estimate.formattedAmount,
+    'Estimate Expiration Date': estimate.formattedExpirationDate,
+  };
+};

packages/server-nest/src/modules/System/SystemModels/SystemModels.module.ts

@@ -11,7 +11,6 @@ import { TenantMetadata } from '../models/TenantMetadataModel';
 const models = [SystemUser, PlanSubscription, TenantModel, TenantMetadata];
 
 const modelProviders = models.map((model) => {
-  console.log(model.name, model, 'model.name');
   return {
     provide: model.name,
     useValue: model,

packages/server-nest/src/modules/TaxRates/utils.ts

@@ -0,0 +1,19 @@
+/**
+ * Get inclusive tax amount.
+ * @param {number} amount
+ * @param {number} taxRate
+ * @returns {number}
+ */
+export const getInclusiveTaxAmount = (amount: number, taxRate: number) => {
+  return (amount * taxRate) / (100 + taxRate);
+};
+
+/**
+ * Get exclusive tax amount.
+ * @param {number} amount
+ * @param {number} taxRate
+ * @returns {number}
+ */
+export const getExlusiveTaxAmount = (amount: number, taxRate: number) => {
+  return (amount * taxRate) / 100;
+};

packages/server-nest/src/modules/Tenancy/TenancyModels/Tenancy.module.ts

@@ -14,6 +14,9 @@ import { PdfTemplateModel } from '@/modules/PdfTemplate/models/PdfTemplate';
 import { Warehouse } from '@/modules/Warehouses/models/Warehouse.model';
 import { ItemWarehouseQuantity } from '@/modules/Warehouses/models/ItemWarehouseQuantity';
 import { Branch } from '@/modules/Branches/models/Branch.model';
+import { SaleEstimate } from '@/modules/SaleEstimates/models/SaleEstimate';
+import { Customer } from '@/modules/Customers/models/Customer';
+import { Contact } from '@/modules/Contacts/models/Contact';
 
 const models = [
   Item,
@@ -28,6 +31,9 @@ const models = [
   Warehouse,
   ItemWarehouseQuantity,
   Branch,
+  SaleEstimate,
+  Customer,
+  Contact
 ];
 
 const modelProviders = models.map((model) => {

packages/server-nest/src/modules/TransactionItemEntry/ItemEntry.transformer.ts

@@ -0,0 +1,49 @@
+import { Transformer } from '../Transformer/Transformer';
+import { ItemEntry } from './models/ItemEntry';
+
+interface ItemEntryTransformerContext{
+  currencyCode: string;
+}
+
+export class ItemEntryTransformer extends Transformer<{}, ItemEntryTransformerContext> {
+  /**
+   * Include these attributes to item entry object.
+   * @returns {Array}
+   */
+  public includeAttributes = (): string[] => {
+    return ['quantityFormatted', 'rateFormatted', 'totalFormatted'];
+  };
+
+  /**
+   * Retrieves the formatted quantitty of item entry.
+   * @param {IItemEntry} entry
+   * @returns {string}
+   */
+  protected quantityFormatted = (entry: ItemEntry): string => {
+    return this.formatNumber(entry.quantity, { money: false });
+  };
+
+  /**
+   * Retrieves the formatted rate of item entry.
+   * @param {IItemEntry} itemEntry -
+   * @returns {string}
+   */
+  protected rateFormatted = (entry: ItemEntry): string => {
+    return this.formatNumber(entry.rate, {
+      currencyCode: this.context.currencyCode,
+      money: false,
+    });
+  };
+
+  /**
+   * Retrieves the formatted total of item entry.
+   * @param {IItemEntry} entry
+   * @returns {string}
+   */
+  protected totalFormatted = (entry: ItemEntry): string => {
+    return this.formatNumber(entry.total, {
+      currencyCode: this.context.currencyCode,
+      money: false,
+    });
+  };
+}

packages/server-nest/src/modules/TransactionItemEntry/ItemEntry.types.ts

@@ -0,0 +1,22 @@
+export type IItemEntryTransactionType = 'SaleInvoice' | 'Bill' | 'SaleReceipt';
+
+export interface IItemEntryDTO {
+  id?: number;
+  index?: number;
+  itemId: number;
+  landedCost?: boolean;
+  warehouseId?: number;
+
+  projectRefId?: number;
+  projectRefType?: ProjectLinkRefType;
+  projectRefInvoicedAmount?: number;
+
+  taxRateId?: number;
+  taxCode?: string;
+}
+
+export enum ProjectLinkRefType {
+  Task = 'TASK',
+  Bill = 'BILL',
+  Expense = 'EXPENSE',
+}

packages/server-nest/src/modules/TransactionItemEntry/models/ItemEntry.ts

@@ -0,0 +1,244 @@
+import { Model } from 'objection';
+import { BaseModel } from '@/models/Model';
+import {
+  getExlusiveTaxAmount,
+  getInclusiveTaxAmount,
+} from '@/modules/TaxRates/utils';
+
+export class ItemEntry extends BaseModel {
+  public referenceType: string;
+  public referenceId: string;
+
+  public index: number;
+  public itemId: number;
+  public description: string;
+
+  public sellAccountId: number;
+  public costAccountId: number;
+
+  public landedCost: boolean;
+  public allocatedCostAmount: number;
+  public taxRate: number;
+  public discount: number;
+  public quantity: number;
+  public rate: number;
+  public isInclusiveTax: number;
+
+  /**
+   * Table name.
+   * @returns {string}
+   */
+  static get tableName() {
+    return 'items_entries';
+  }
+
+  /**
+   * Timestamps columns.
+   * @returns {string[]}
+   */
+  get timestamps() {
+    return ['created_at', 'updated_at'];
+  }
+
+  /**
+   * Virtual attributes.
+   * @returns {string[]}
+   */
+  static get virtualAttributes() {
+    return [
+      'amount',
+      'taxAmount',
+      'amountExludingTax',
+      'amountInclusingTax',
+      'total',
+    ];
+  }
+
+  /**
+   * Item entry total.
+   * Amount of item entry includes tax and subtracted discount amount.
+   * @returns {number}
+   */
+  get total() {
+    return this.amountInclusingTax;
+  }
+
+  /**
+   * Item entry amount.
+   * Amount of item entry that may include or exclude tax.
+   * @returns {number}
+   */
+  get amount() {
+    return this.quantity * this.rate;
+  }
+
+  /**
+   * Item entry amount including tax.
+   * @returns {number}
+   */
+  get amountInclusingTax() {
+    return this.isInclusiveTax ? this.amount : this.amount + this.taxAmount;
+  }
+
+  /**
+   * Item entry amount excluding tax.
+   * @returns {number}
+   */
+  get amountExludingTax() {
+    return this.isInclusiveTax ? this.amount - this.taxAmount : this.amount;
+  }
+
+  /**
+   * Discount amount.
+   * @returns {number}
+   */
+  get discountAmount() {
+    return this.amount * (this.discount / 100);
+  }
+
+  /**
+   * Tag rate fraction.
+   * @returns {number}
+   */
+  get tagRateFraction() {
+    return this.taxRate / 100;
+  }
+
+  /**
+   * Tax amount withheld.
+   * @returns {number}
+   */
+  get taxAmount() {
+    return this.isInclusiveTax
+      ? getInclusiveTaxAmount(this.amount, this.taxRate)
+      : getExlusiveTaxAmount(this.amount, this.taxRate);
+  }
+
+  static calcAmount(itemEntry) {
+    const { discount, quantity, rate } = itemEntry;
+    const total = quantity * rate;
+
+    return discount ? total - total * discount * 0.01 : total;
+  }
+
+  /**
+   * Item entry relations.
+   */
+  static get relationMappings() {
+    const Item = require('models/Item');
+    const BillLandedCostEntry = require('models/BillLandedCostEntry');
+    const SaleInvoice = require('models/SaleInvoice');
+    const Bill = require('models/Bill');
+    const SaleReceipt = require('models/SaleReceipt');
+    const SaleEstimate = require('models/SaleEstimate');
+    const ProjectTask = require('models/Task');
+    const Expense = require('models/Expense');
+    const TaxRate = require('models/TaxRate');
+
+    return {
+      item: {
+        relation: Model.BelongsToOneRelation,
+        modelClass: Item.default,
+        join: {
+          from: 'items_entries.itemId',
+          to: 'items.id',
+        },
+      },
+      allocatedCostEntries: {
+        relation: Model.HasManyRelation,
+        modelClass: BillLandedCostEntry.default,
+        join: {
+          from: 'items_entries.referenceId',
+          to: 'bill_located_cost_entries.entryId',
+        },
+      },
+
+      invoice: {
+        relation: Model.BelongsToOneRelation,
+        modelClass: SaleInvoice.default,
+        join: {
+          from: 'items_entries.referenceId',
+          to: 'sales_invoices.id',
+        },
+      },
+
+      bill: {
+        relation: Model.BelongsToOneRelation,
+        modelClass: Bill.default,
+        join: {
+          from: 'items_entries.referenceId',
+          to: 'bills.id',
+        },
+      },
+
+      estimate: {
+        relation: Model.BelongsToOneRelation,
+        modelClass: SaleEstimate.default,
+        join: {
+          from: 'items_entries.referenceId',
+          to: 'sales_estimates.id',
+        },
+      },
+
+      /**
+       * Sale receipt reference.
+       */
+      receipt: {
+        relation: Model.BelongsToOneRelation,
+        modelClass: SaleReceipt.default,
+        join: {
+          from: 'items_entries.referenceId',
+          to: 'sales_receipts.id',
+        },
+      },
+
+      /**
+       * Project task reference.
+       */
+      projectTaskRef: {
+        relation: Model.HasManyRelation,
+        modelClass: ProjectTask.default,
+        join: {
+          from: 'items_entries.projectRefId',
+          to: 'tasks.id',
+        },
+      },
+
+      /**
+       * Project expense reference.
+       */
+      projectExpenseRef: {
+        relation: Model.HasManyRelation,
+        modelClass: Expense.default,
+        join: {
+          from: 'items_entries.projectRefId',
+          to: 'expenses_transactions.id',
+        },
+      },
+
+      /**
+       * Project bill reference.
+       */
+      projectBillRef: {
+        relation: Model.HasManyRelation,
+        modelClass: Bill.default,
+        join: {
+          from: 'items_entries.projectRefId',
+          to: 'bills.id',
+        },
+      },
+
+      /**
+       * Tax rate reference.
+       */
+      tax: {
+        relation: Model.HasOneRelation,
+        modelClass: TaxRate.default,
+        join: {
+          from: 'items_entries.taxRateId',
+          to: 'tax_rates.id',
+        },
+      },
+    };
+  }
+}

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

@@ -7,8 +7,8 @@ import { TransformerContext } from './Transformer.types';
 
 const EXPORT_DTE_FORMAT = 'YYYY-MM-DD';
 
-export class Transformer {
-  public context: TransformerContext;
+export class Transformer<T = {}, ExtraContext = {}> {
+  public context: ExtraContext & TransformerContext;
   public options: Record<string, any>;
 
   /**
@@ -88,7 +88,7 @@ export class Transformer {
       // sortObjectKeysAlphabetically,
       this.transform,
       R.when(this.hasExcludeAttributes, this.excludeAttributesTransformed),
-      this.includeAttributesTransformed
+      this.includeAttributesTransformed,
     )(normlizedItem);
   };
 
@@ -119,7 +119,7 @@ export class Transformer {
     return attributes
       .filter(
         (attribute) =>
-          isFunction(this[attribute]) || !isUndefined(item[attribute])
+          isFunction(this[attribute]) || !isUndefined(item[attribute]),
       )
       .reduce((acc, attribute: string) => {
         acc[attribute] = isFunction(this[attribute])
@@ -216,7 +216,7 @@ export class Transformer {
   public item(
     obj: Record<string, any>,
     transformer: Transformer,
-    options?: any
+    options?: any,
   ) {
     transformer.setOptions(options);
     transformer.setContext(this.context);

packages/server-nest/src/modules/Warehouses/Integrations/WarehouseTransactionDTOTransform.ts

@@ -1,38 +1,37 @@
-// import { Service, Inject } from 'typedi';
-// import { omit } from 'lodash';
-// import * as R from 'ramda';
-// import { WarehousesSettings } from '../WarehousesSettings';
+import { omit } from 'lodash';
+import { Injectable } from '@nestjs/common';
+import { WarehousesSettings } from '../WarehousesSettings';
 
-// @Service()
-// export class WarehouseTransactionDTOTransform {
-//   @Inject()
-//   private warehousesSettings: WarehousesSettings;
+@Injectable()
+export class WarehouseTransactionDTOTransform {
+  constructor(
+    private readonly warehousesSettings: WarehousesSettings,
+  ) {}
 
-//   /**
-//    * Excludes DTO warehouse id when mutli-warehouses feature is inactive.
-//    * @param   {number} tenantId
-//    * @returns {Promise<Omit<T, 'warehouseId'> | T>}
-//    */
-//   private excludeDTOWarehouseIdWhenInactive = <
-//     T extends { warehouseId?: number }
-//   >(
-//     tenantId: number,
-//     DTO: T
-//   ): Omit<T, 'warehouseId'> | T => {
-//     const isActive = this.warehousesSettings.isMultiWarehousesActive(tenantId);
+  /**
+   * Excludes DTO warehouse id when mutli-warehouses feature is inactive.
+   * @param   {number} tenantId
+   * @returns {Promise<Omit<T, 'warehouseId'> | T>}
+   */
+  private excludeDTOWarehouseIdWhenInactive = <
+    T extends { warehouseId?: number }
+  >(
+    DTO: T
+  ): Omit<T, 'warehouseId'> | T => {
+    const isActive = this.warehousesSettings.isMultiWarehousesActive();
 
-//     return !isActive ? omit(DTO, ['warehouseId']) : DTO;
-//   };
+    return !isActive ? omit(DTO, ['warehouseId']) : DTO;
+  };
 
-//   /**
-//    *
-//    * @param   {number} tenantId
-//    * @param   {T} DTO -
-//    * @returns {Omit<T, 'warehouseId'> | T}
-//    */
-//   public transformDTO =
-//     <T extends { warehouseId?: number }>(tenantId: number) =>
-//     (DTO: T): Omit<T, 'warehouseId'> | T => {
-//       return this.excludeDTOWarehouseIdWhenInactive<T>(tenantId, DTO);
-//     };
-// }
+  /**
+   * 
+   * @param   {number} tenantId
+   * @param   {T} DTO -
+   * @returns {Omit<T, 'warehouseId'> | T}
+   */
+  public transformDTO =
+    <T extends { warehouseId?: number }>(DTO: T): Omit<T, 'warehouseId'> | T => {
+      return this.excludeDTOWarehouseIdWhenInactive<T>(DTO);
+    };
+}
+ 

packages/server-nest/src/utils/address-text-format.ts

@@ -0,0 +1,113 @@
+import { Contact } from "@/modules/Contacts/models/Contact";
+
+interface OrganizationAddressFormatArgs {
+  organizationName?: string;
+  address1?: string;
+  address2?: string;
+  state?: string;
+  city?: string;
+  country?: string;
+  postalCode?: string;
+  phone?: string;
+}
+
+export const defaultOrganizationAddressFormat = `
+<strong>{ORGANIZATION_NAME}</strong>
+{ADDRESS_1}
+{ADDRESS_2}
+{CITY} {STATE} {POSTAL_CODE}
+{COUNTRY}
+{PHONE}
+`;
+/**
+ * Formats the address text based on the provided message and arguments.
+ * This function replaces placeholders in the message with actual values
+ * from the OrganizationAddressFormatArgs. It ensures that the final
+ * formatted message is clean and free of excessive newlines.
+ *
+ * @param {string} message - The message template containing placeholders.
+ * @param {Record<string, string>} args - The arguments containing the values to replace in the message.
+ * @returns {string} - The formatted address text.
+ */
+const formatText = (message: string, replacements: Record<string, string>) => {
+  let formattedMessage = Object.entries(replacements).reduce(
+    (msg, [key, value]) => {
+      return msg.split(`{${key}}`).join(value || '');
+    },
+    message
+  );
+  // Removes any empty lines.
+  formattedMessage = formattedMessage.replace(/^\s*[\r\n]/gm, '');
+  formattedMessage = formattedMessage.replace(/\n{2,}/g, '\n');
+  formattedMessage = formattedMessage.replace(/\n/g, '<br />');
+  formattedMessage = formattedMessage.trim();
+
+  return formattedMessage;
+};
+
+export const organizationAddressTextFormat = (
+  message: string,
+  args: OrganizationAddressFormatArgs
+) => {
+  const replacements: Record<string, string> = {
+    ORGANIZATION_NAME: args.organizationName || '',
+    ADDRESS_1: args.address1 || '',
+    ADDRESS_2: args.address2 || '',
+    CITY: args.city || '',
+    STATE: args.state || '',
+    POSTAL_CODE: args.postalCode || '',
+    COUNTRY: args.country || '',
+    PHONE: args.phone || '',
+  };
+  return formatText(message, replacements);
+};
+
+interface ContactAddressTextFormatArgs {
+  displayName?: string;
+  state?: string;
+  postalCode?: string;
+  email?: string;
+  country?: string;
+  city?: string;
+  address2?: string;
+  address1?: string;
+  phone?: string;
+}
+
+export const defaultContactAddressFormat = `{CONTACT_NAME}
+{ADDRESS_1}
+{ADDRESS_2}
+{CITY} {STATE} {POSTAL_CODE}
+{COUNTRY}
+{PHONE}
+`;
+
+export const contactAddressTextFormat = (
+  contact: Contact,
+  message: string = defaultContactAddressFormat
+) => {
+  const args = {
+    displayName: contact.displayName,
+    address1: contact.billingAddress1,
+    address2: contact.billingAddress2,
+    state: contact.billingAddressState,
+    country: contact.billingAddressCountry,
+    postalCode: contact?.billingAddressPostcode,
+    city: contact?.billingAddressCity,
+    email: contact?.email,
+    phone: contact?.billingAddressPhone,
+  } as ContactAddressTextFormatArgs;
+
+  const replacements: Record<string, string> = {
+    CONTACT_NAME: args.displayName || '',
+    ADDRESS_1: args.address1 || '',
+    ADDRESS_2: args.address2 || '',
+    CITY: args.city || '',
+    STATE: args.state || '',
+    POSTAL_CODE: args.postalCode || '',
+    COUNTRY: args.country || '',
+    EMAIL: args?.email || '',
+    PHONE: args?.phone || '',
+  };
+  return formatText(message, replacements);
+};

packages/server-nest/src/utils/format-date-fields.ts

@@ -0,0 +1,23 @@
+import * as moment from 'moment';
+
+/**
+ * Formats the given date fields.
+ * @param {any} inputDTO - Input data.
+ * @param {Array<string>} fields - Fields to format.
+ * @param {string} format - Format string.
+ * @returns {any}
+ */
+export const formatDateFields = (
+  inputDTO: any,
+  fields: Array<string>,
+  format = 'YYYY-MM-DD',
+) => {
+  const _inputDTO = { ...inputDTO };
+
+  fields.forEach((field) => {
+    if (_inputDTO[field]) {
+      _inputDTO[field] = moment(_inputDTO[field]).format(format);
+    }
+  });
+  return _inputDTO;
+};

packages/server-nest/test/sale-estimates.e2e-spec.ts

@@ -0,0 +1,61 @@
+import * as request from 'supertest';
+import { faker } from '@faker-js/faker';
+import { app } from './init-app-test';
+
+describe('Sale Estimates (e2e)', () => {
+  it('/sales/estimates (POST)', async () => {
+    return request(app.getHttpServer())
+      .post('/sales/estimates')
+      .set('organization-id', '4064541lv40nhca')
+      .send({
+        customerId: 2,
+        estimateDate: '2022-02-02',
+        expirationDate: '2020-03-02',
+        delivered: false,
+        estimateNumber: faker.string.uuid(),
+        discount: 100,
+        discountType: 'amount',
+        entries: [
+          {
+            index: 1,
+            itemId: 1001,
+            quantity: 3,
+            rate: 1000,
+            description: "It's description here.",
+          },
+        ],
+      })
+      .expect(201);
+  });
+
+  it('/sales/estimates (DELETE)', async () => {
+    const response = await request(app.getHttpServer())
+      .post('/sales/estimates')
+      .set('organization-id', '4064541lv40nhca')
+      .send({
+        customerId: 2,
+        estimateDate: '2022-02-02',
+        expirationDate: '2020-03-02',
+        delivered: false,
+        estimateNumber: faker.string.uuid(),
+        discount: 100,
+        discountType: 'amount',
+        entries: [
+          {
+            index: 1,
+            itemId: 1001,
+            quantity: 3,
+            rate: 1000,
+            description: "It's description here.",
+          },
+        ],
+      });
+
+    const estimateId = response.body.id;
+
+    return request(app.getHttpServer())
+      .delete(`/sales/estimates/${estimateId}`)
+      .set('organization-id', '4064541lv40nhca')
+      .expect(200);
+  });
+});

packages/server/src/services/Items/ItemsEntriesService.ts

@@ -1,11 +1,10 @@
+import { Injectable, Inject } from '@nestjs/common';
+import { Knex } from 'knex';
 import { sumBy, difference, map } from 'lodash';
-import { Inject, Service } from 'typedi';
 import { IItemEntry, IItemEntryDTO, IItem } from '@/interfaces';
 import { ServiceError } from '@/exceptions';
-import TenancyService from '@/services/Tenancy/TenancyService';
-import { ItemEntry } from '@/models';
+import { Item, ItemEntry } from '@/models';
 import { entriesAmountDiff } from 'utils';
-import { Knex } from 'knex';
 
 const ERRORS = {
   ITEMS_NOT_FOUND: 'ITEMS_NOT_FOUND',
@@ -14,38 +13,36 @@ const ERRORS = {
   NOT_SELL_ABLE_ITEMS: 'NOT_SELL_ABLE_ITEMS',
 };
 
-@Service()
+@Injectable()
 export default class ItemsEntriesService {
-  @Inject()
-  private tenancy: TenancyService;
+  constructor(
+    @Inject(Item.name)
+    private readonly itemModel: typeof Item,
+    @Inject(ItemEntry.name)
+    private readonly itemEntryModel: typeof ItemEntry,
+    private readonly itemRepository: any, // Replace 'any' with proper repository type
+  ) {}
 
   /**
    * Retrieve the inventory items entries of the reference id and type.
-   * @param {number} tenantId
    * @param {string} referenceType
    * @param {string} referenceId
    * @return {Promise<IItemEntry[]>}
    */
   public async getInventoryEntries(
-    tenantId: number,
     referenceType: string,
     referenceId: number
   ): Promise<IItemEntry[]> {
-    const { Item, ItemEntry } = this.tenancy.models(tenantId);
-
-    const itemsEntries = await ItemEntry.query()
+    const itemsEntries = await this.itemEntryModel.query()
       .where('reference_type', referenceType)
       .where('reference_id', referenceId);
 
-    // Inventory items.
-    const inventoryItems = await Item.query()
+    const inventoryItems = await this.itemModel.query()
       .whereIn('id', map(itemsEntries, 'itemId'))
       .where('type', 'inventory');
 
-    // Inventory items ids.
     const inventoryItemsIds = map(inventoryItems, 'id');
 
-    // Filtering the inventory items entries.
     const inventoryItemsEntries = itemsEntries.filter(
       (itemEntry) => inventoryItemsIds.indexOf(itemEntry.itemId) !== -1
     );
@@ -58,15 +55,12 @@ export default class ItemsEntriesService {
    * @returns {IItemEntry[]}
    */
   public async filterInventoryEntries(
-    tenantId: number,
     entries: IItemEntry[],
     trx?: Knex.Transaction
   ): Promise<IItemEntry[]> {
-    const { Item } = this.tenancy.models(tenantId);
     const entriesItemsIds = entries.map((e) => e.itemId);
 
-    // Retrieve entries inventory items.
-    const inventoryItems = await Item.query(trx)
+    const inventoryItems = await this.itemModel.query(trx)
       .whereIn('id', entriesItemsIds)
       .where('type', 'inventory');
 
@@ -79,17 +73,14 @@ export default class ItemsEntriesService {
   /**
    * Validates the entries items ids.
    * @async
-   * @param {number} tenantId -
-   * @param {IItemEntryDTO} itemEntries -
+   * @param {IItemEntryDTO[]} itemEntries -
    */
   public async validateItemsIdsExistance(
-    tenantId: number,
     itemEntries: IItemEntryDTO[]
   ) {
-    const { Item } = this.tenancy.models(tenantId);
     const itemsIds = itemEntries.map((e) => e.itemId);
 
-    const foundItems = await Item.query().whereIn('id', itemsIds);
+    const foundItems = await this.itemModel.query().whereIn('id', itemsIds);
 
     const foundItemsIds = foundItems.map((item: IItem) => item.id);
     const notFoundItemsIds = difference(itemsIds, foundItemsIds);
@@ -102,22 +93,19 @@ export default class ItemsEntriesService {
 
   /**
    * Validates the entries ids existance on the storage.
-   * @param {number} tenantId -
    * @param {number} billId -
    * @param {IItemEntry[]} billEntries -
    */
   public async validateEntriesIdsExistance(
-    tenantId: number,
     referenceId: number,
     referenceType: string,
     billEntries: IItemEntryDTO[]
   ) {
-    const { ItemEntry } = this.tenancy.models(tenantId);
     const entriesIds = billEntries
       .filter((e: IItemEntry) => e.id)
       .map((e: IItemEntry) => e.id);
 
-    const storedEntries = await ItemEntry.query()
+    const storedEntries = await this.itemEntryModel.query()
       .whereIn('reference_id', [referenceId])
       .whereIn('reference_type', [referenceType]);
 
@@ -133,13 +121,11 @@ export default class ItemsEntriesService {
    * Validate the entries items that not purchase-able.
    */
   public async validateNonPurchasableEntriesItems(
-    tenantId: number,
     itemEntries: IItemEntryDTO[]
   ) {
-    const { Item } = this.tenancy.models(tenantId);
     const itemsIds = itemEntries.map((e: IItemEntryDTO) => e.itemId);
 
-    const purchasbleItems = await Item.query()
+    const purchasbleItems = await this.itemModel.query()
       .where('purchasable', true)
       .whereIn('id', itemsIds);
 
@@ -155,13 +141,11 @@ export default class ItemsEntriesService {
    * Validate the entries items that not sell-able.
    */
   public async validateNonSellableEntriesItems(
-    tenantId: number,
     itemEntries: IItemEntryDTO[]
   ) {
-    const { Item } = this.tenancy.models(tenantId);
     const itemsIds = itemEntries.map((e: IItemEntryDTO) => e.itemId);
 
-    const sellableItems = await Item.query()
+    const sellableItems = await this.itemModel.query()
       .where('sellable', true)
       .whereIn('id', itemsIds);
 
@@ -175,16 +159,13 @@ export default class ItemsEntriesService {
 
   /**
    * Changes items quantity from the given items entries the new and old onces.
-   * @param {number} tenantId
-   * @param {IItemEntry} entries - Items entries.
-   * @param {IItemEntry} oldEntries - Old items entries.
+   * @param {IItemEntry[]} entries - Items entries.
+   * @param {IItemEntry[]} oldEntries - Old items entries.
    */
   public async changeItemsQuantity(
-    tenantId: number,
     entries: IItemEntry[],
     oldEntries?: IItemEntry[]
   ): Promise<void> {
-    const { itemRepository } = this.tenancy.repositories(tenantId);
     const opers = [];
 
     const diffEntries = entriesAmountDiff(
@@ -194,7 +175,7 @@ export default class ItemsEntriesService {
       'itemId'
     );
     diffEntries.forEach((entry: IItemEntry) => {
-      const changeQuantityOper = itemRepository.changeNumber(
+      const changeQuantityOper = this.itemRepository.changeNumber(
         { id: entry.itemId, type: 'inventory' },
         'quantityOnHand',
         entry.quantity
@@ -206,27 +187,22 @@ export default class ItemsEntriesService {
 
   /**
    * Increment items quantity from the given items entries.
-   * @param {number} tenantId - Tenant id.
-   * @param {IItemEntry} entries - Items entries.
+   * @param {IItemEntry[]} entries - Items entries.
    */
   public async incrementItemsEntries(
-    tenantId: number,
     entries: IItemEntry[]
   ): Promise<void> {
-    return this.changeItemsQuantity(tenantId, entries);
+    return this.changeItemsQuantity(entries);
   }
 
   /**
    * Decrement items quantity from the given items entries.
-   * @param {number} tenantId - Tenant id.
-   * @param {IItemEntry} entries - Items entries.
+   * @param {IItemEntry[]} entries - Items entries.
    */
   public async decrementItemsQuantity(
-    tenantId: number,
     entries: IItemEntry[]
   ): Promise<void> {
     return this.changeItemsQuantity(
-      tenantId,
       entries.map((entry) => ({
         ...entry,
         quantity: entry.quantity * -1,
@@ -237,12 +213,10 @@ export default class ItemsEntriesService {
   /**
    * Sets the cost/sell accounts to the invoice entries.
    */
-  public setItemsEntriesDefaultAccounts(tenantId: number) {
-    return async (entries: IItemEntry[]) =>   {
-      const { Item } = this.tenancy.models(tenantId);
-
+  public setItemsEntriesDefaultAccounts() {
+    return async (entries: IItemEntry[]) => {
       const entriesItemsIds = entries.map((e) => e.itemId);
-      const items = await Item.query().whereIn('id', entriesItemsIds);
+      const items = await this.itemModel.query().whereIn('id', entriesItemsIds);
 
       return entries.map((entry) => {
         const item = items.find((i) => i.id === entry.itemId);

src/errors/service-error.ts

@@ -0,0 +1,14 @@
+import { HttpStatus } from '@nestjs/common';
+
+export class ServiceError extends Error {
+  constructor(
+    public message: string,
+    private status: HttpStatus = HttpStatus.INTERNAL_SERVER_ERROR,
+  ) {
+    super(message);
+  }
+
+  getStatus(): HttpStatus {
+    return this.status;
+  }
+} 

src/filters/service-error.filter.ts

@@ -0,0 +1,19 @@
+import { ExceptionFilter, Catch, ArgumentsHost, HttpStatus } from '@nestjs/common';
+import { Response } from 'express';
+import { ServiceError } from '../errors/service-error';
+
+@Catch(ServiceError)
+export class ServiceErrorFilter implements ExceptionFilter {
+  catch(exception: ServiceError, host: ArgumentsHost) {
+    const ctx = host.switchToHttp();
+    const response = ctx.getResponse<Response>();
+    const status = exception.getStatus();
+
+    response
+      .status(status)
+      .json({
+        statusCode: status,
+        message: exception.message,
+      });
+  }
+} 

src/main.ts

@@ -0,0 +1,13 @@
+import { NestFactory } from '@nestjs/core';
+import { AppModule } from './app.module';
+import { ServiceErrorFilter } from './filters/service-error.filter';
+
+async function bootstrap() {
+  const app = await NestFactory.create(AppModule);
+
+  // Register the ServiceErrorFilter globally
+  app.useGlobalFilters(new ServiceErrorFilter());
+
+  await app.listen(3000);
+}
+bootstrap();