refactoring: balance sheet report.

refactoring: trial balance sheet report.
refactoring: general ledger report.
refactoring: journal report.
refactoring: P&L report.

server/src/services/FinancialStatements/AgingSummary/ARAgingSummaryService.ts

@@ -0,0 +1,93 @@
+import moment from 'moment';
+import { Inject, Service } from 'typedi';
+import { IARAgingSummaryQuery } from 'interfaces';
+import TenancyService from 'services/Tenancy/TenancyService';
+import Journal from 'services/Accounting/JournalPoster';
+import ARAgingSummarySheet from './ARAgingSummarySheet';
+
+@Service()
+export default class ARAgingSummaryService {
+  @Inject()
+  tenancy: TenancyService;
+
+  @Inject('logger')
+  logger: any;
+
+  /**
+   * Default report query.
+   */
+  get defaultQuery() {
+    return {
+      asDate: moment().format('YYYY-MM-DD'),
+      agingDaysBefore: 30,
+      agingPeriods: 3,
+      numberFormat: {
+        no_cents: false,
+        divide_1000: false,
+      },
+      customersIds: [],
+      noneZero: false,
+    };
+  }
+
+  /**
+   * Retreive th accounts receivable aging summary data and columns.
+   * @param {number} tenantId 
+   * @param query 
+   */
+  async ARAgingSummary(tenantId: number, query: IARAgingSummaryQuery) {
+    const {
+      customerRepository,
+      accountRepository,
+      transactionsRepository,
+      accountTypeRepository
+    } = this.tenancy.repositories(tenantId);
+
+    const { Account } = this.tenancy.models(tenantId);
+    const filter = {
+      ...this.defaultQuery,
+      ...query,
+    };
+    this.logger.info('[AR_Aging_Summary] try to calculate the report.', { tenantId, filter });
+
+    // Settings tenant service.
+    const settings = this.tenancy.settings(tenantId);
+    const baseCurrency = settings.get({ group: 'organization', key: 'base_currency' });
+
+    // Retrieve all accounts graph on the storage.
+    const accountsGraph = await accountRepository.getDependencyGraph();
+
+    // Retrieve all customers from the storage.
+    const customers = await customerRepository.all();
+
+    // Retrieve AR account type.
+    const ARType = await accountTypeRepository.getByKey('accounts_receivable');
+
+    // Retreive AR account.
+    const ARAccount = await Account.query().findOne('account_type_id', ARType.id);
+
+    // Retrieve journal transactions based on the given query.
+    const transactions = await transactionsRepository.journal({
+      toDate: filter.asDate,
+      contactType: 'customer',
+      contactsIds: customers.map(customer => customer.id),
+    });
+    // Converts transactions array to journal collection.
+    const journal = Journal.fromTransactions(transactions, tenantId, accountsGraph);
+
+    // AR aging summary report instnace.
+    const ARAgingSummaryReport = new ARAgingSummarySheet(
+      tenantId,
+      filter,
+      customers,
+      journal,
+      ARAccount,
+      baseCurrency
+    );
+    // AR aging summary report data and columns.
+    const data = ARAgingSummaryReport.reportData();
+    const columns = ARAgingSummaryReport.reportColumns();
+
+    return { data, columns };
+  }
+}