add server to monorepo.

packages/server/src/services/FinancialStatements/SalesByItems/SalesByItemsService.ts

@@ -0,0 +1,132 @@
+import { Service, Inject } from 'typedi';
+import moment from 'moment';
+import {
+  ISalesByItemsReportQuery,
+  ISalesByItemsSheetStatement,
+  ISalesByItemsSheetMeta
+} from '@/interfaces';
+import TenancyService from '@/services/Tenancy/TenancyService';
+import SalesByItems from './SalesByItems';
+import { Tenant } from '@/system/models';
+
+@Service()
+export default class SalesByItemsReportService {
+  @Inject()
+  tenancy: TenancyService;
+
+  @Inject('logger')
+  logger: any;
+
+  /**
+   * Defaults balance sheet filter query.
+   * @return {IBalanceSheetQuery}
+   */
+  get defaultQuery(): ISalesByItemsReportQuery {
+    return {
+      fromDate: moment().startOf('year').format('YYYY-MM-DD'),
+      toDate: moment().endOf('year').format('YYYY-MM-DD'),
+      itemsIds: [],
+      numberFormat: {
+        precision: 2,
+        divideOn1000: false,
+        showZero: false,
+        formatMoney: 'always',
+        negativeFormat: 'mines',
+      },
+      noneTransactions: true,
+      onlyActive: false,
+    };
+  }
+
+  /**
+   * Retrieve the balance sheet meta.
+   * @param {number} tenantId -
+   * @returns {IBalanceSheetMeta}
+   */
+  reportMetadata(tenantId: number): ISalesByItemsSheetMeta {
+    const settings = this.tenancy.settings(tenantId);
+
+    const organizationName = settings.get({
+      group: 'organization',
+      key: 'name',
+    });
+    const baseCurrency = settings.get({
+      group: 'organization',
+      key: 'base_currency',
+    });
+
+    return {
+      organizationName,
+      baseCurrency,
+    };
+  }
+
+  /**
+   * Retrieve balance sheet statement.
+   * -------------
+   * @param {number} tenantId
+   * @param {IBalanceSheetQuery} query
+   *
+   * @return {IBalanceSheetStatement}
+   */
+  public async salesByItems(
+    tenantId: number,
+    query: ISalesByItemsReportQuery
+  ): Promise<{
+    data: ISalesByItemsSheetStatement,
+    query: ISalesByItemsReportQuery,
+    meta: ISalesByItemsSheetMeta,
+  }> {
+    const { Item, InventoryTransaction } = this.tenancy.models(tenantId);
+
+    const tenant = await Tenant.query()
+      .findById(tenantId)
+      .withGraphFetched('metadata');
+
+    const filter = {
+      ...this.defaultQuery,
+      ...query,
+    };
+    this.logger.info('[sales_by_items] trying to calculate the report.', {
+      filter,
+      tenantId,
+    });
+    // Inventory items for sales report.
+    const inventoryItems = await Item.query().onBuild((q) => {
+      q.where('type', 'inventory');
+
+      if (filter.itemsIds.length > 0) {
+        q.whereIn('id', filter.itemsIds);
+      }
+    });
+    const inventoryItemsIds = inventoryItems.map((item) => item.id);
+
+    // Calculates the total inventory total quantity and rate `IN` transactions.
+    const inventoryTransactions = await InventoryTransaction.query().onBuild(
+      (builder: any) => {
+        builder.modify('itemsTotals');
+        builder.modify('OUTDirection');
+
+        // Filter the inventory items only.
+        builder.whereIn('itemId', inventoryItemsIds);
+
+        // Filter the date range of the sheet.
+        builder.modify('filterDateRange', filter.fromDate, filter.toDate)
+      }
+    );
+
+    const purchasesByItemsInstance = new SalesByItems(
+      filter,
+      inventoryItems,
+      inventoryTransactions,
+      tenant.metadata.baseCurrency,
+    );
+    const purchasesByItemsData = purchasesByItemsInstance.reportData();
+
+    return {
+      data: purchasesByItemsData,
+      query: filter,
+      meta: this.reportMetadata(tenantId),
+    };
+  }
+}