refactor: split the services to multiple service classes (#202)

packages/server/src/services/Purchases/BillPayments/BillPaymentBillSync.ts

@@ -0,0 +1,48 @@
+import { Inject, Service } from 'typedi';
+import { Knex } from 'knex';
+import { IBillPaymentEntryDTO } from '@/interfaces';
+import HasTenancyService from '@/services/Tenancy/TenancyService';
+import { entriesAmountDiff } from '@/utils';
+
+@Service()
+export class BillPaymentBillSync {
+  @Inject()
+  private tenancy: HasTenancyService;
+
+  /**
+   * Saves bills payment amount changes different.
+   * @param {number} tenantId -
+   * @param {IBillPaymentEntryDTO[]} paymentMadeEntries -
+   * @param {IBillPaymentEntryDTO[]} oldPaymentMadeEntries -
+   */
+  public async saveChangeBillsPaymentAmount(
+    tenantId: number,
+    paymentMadeEntries: IBillPaymentEntryDTO[],
+    oldPaymentMadeEntries?: IBillPaymentEntryDTO[],
+    trx?: Knex.Transaction
+  ): Promise<void> {
+    const { Bill } = this.tenancy.models(tenantId);
+    const opers: Promise<void>[] = [];
+
+    const diffEntries = entriesAmountDiff(
+      paymentMadeEntries,
+      oldPaymentMadeEntries,
+      'paymentAmount',
+      'billId'
+    );
+    diffEntries.forEach(
+      (diffEntry: { paymentAmount: number; billId: number }) => {
+        if (diffEntry.paymentAmount === 0) {
+          return;
+        }
+        const oper = Bill.changePaymentAmount(
+          diffEntry.billId,
+          diffEntry.paymentAmount,
+          trx
+        );
+        opers.push(oper);
+      }
+    );
+    await Promise.all(opers);
+  }
+}