feat: Inventory item details report.

feat: Cash flow statement report.

server/src/services/FinancialStatements/VendorBalanceSummary/VendorBalanceSummaryRepository.ts

@@ -0,0 +1,69 @@
+import { Inject, Service } from 'typedi';
+import { isEmpty, map } from 'lodash';
+import { IVendor, IAccount } from 'interfaces';
+import HasTenancyService from 'services/Tenancy/TenancyService';
+import { ACCOUNT_TYPE } from 'data/AccountTypes';
+
+@Service()
+export default class VendorBalanceSummaryRepository {
+  @Inject()
+  tenancy: HasTenancyService;
+
+  /**
+   * Retrieve the report vendors.
+   * @param {number} tenantId
+   * @param {number[]} vendorsIds - Vendors ids.
+   * @returns {IVendor[]}
+   */
+  public getVendors(
+    tenantId: number,
+    vendorsIds?: number[]
+  ): Promise<IVendor[]> {
+    const { Vendor } = this.tenancy.models(tenantId);
+
+    const vendorQuery = Vendor.query().orderBy('displayName');
+
+    if (!isEmpty(vendorsIds)) {
+      vendorQuery.whereIn('id', vendorsIds);
+    }
+    return vendorQuery;
+  }
+
+  /**
+   * Retrieve the payable accounts.
+   * @param {number} tenantId
+   * @returns {Promise<IAccount[]>}
+   */
+  public getPayableAccounts(tenantId: number): Promise<IAccount[]> {
+    const { Account } = this.tenancy.models(tenantId);
+
+    return Account.query().where('accountType', ACCOUNT_TYPE.ACCOUNTS_PAYABLE);
+  }
+
+  /**
+   * Retrieve the vendors transactions.
+   * @param {number} tenantId
+   * @param {Date} asDate
+   * @returns
+   */
+  public async getVendorsTransactions(tenantId: number, asDate: Date | string) {
+    const { AccountTransaction } = this.tenancy.models(tenantId);
+
+    // Retrieve payable accounts .
+    const payableAccounts = await this.getPayableAccounts(tenantId);
+    const payableAccountsIds = map(payableAccounts, 'id');
+
+    // Retrieve the customers transactions of A/R accounts.
+    const customersTranasctions = await AccountTransaction.query().onBuild(
+      (query) => {
+        query.whereIn('accountId', payableAccountsIds);
+        query.modify('filterDateRange', null, asDate);
+        query.groupBy('contactId');
+        query.sum('credit as credit');
+        query.sum('debit as debit');
+        query.select('contactId');
+      }
+    );
+    return customersTranasctions;
+  }
+}