refactor: migrate item categories module to nestjs

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

@@ -0,0 +1,45 @@
+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();
+  };
+}