refactor: items services to Nestjs

packages/server-nest/src/modules/Items/ItemTransactions.service.ts

@@ -0,0 +1,108 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { ItemInvoicesTransactionsTransformer } from './ItemInvoicesTransactions.transformer';
+import { ItemEstimateTransactionTransformer } from './ItemEstimatesTransaction.transformer';
+import { ItemBillTransactionTransformer } from './ItemBillsTransactions.transformer';
+import { ItemReceiptTransactionTransformer } from './ItemReceiptsTransactions.transformer';
+import { TransformerInjectable } from '../Transformer/TransformerInjectable.service';
+import { ItemEntry } from './models/ItemEntry';
+
+@Injectable()
+export class ItemTransactionsService {
+  constructor(
+    private transformer: TransformerInjectable,
+
+    @Inject(ItemEntry.name)
+    private readonly itemEntry: typeof ItemEntry,
+  ) {}
+
+  /**
+   * Retrieves the item associated invoices transactions.
+   * @param {number} itemId -
+   */
+  public async getItemInvoicesTransactions(itemId: number) {
+    const invoiceEntries = await this.itemEntry.query()
+      .where('itemId', itemId)
+      .where('referenceType', 'SaleInvoice')
+      .withGraphJoined('invoice.customer(selectCustomerColumns)')
+      .orderBy('invoice:invoiceDate', 'ASC')
+      .modifiers({
+        selectCustomerColumns: (builder) => {
+          builder.select('displayName', 'currencyCode', 'id');
+        },
+      });
+    // Retrieves the transformed invoice entries.
+    return this.transformer.transform(
+      invoiceEntries,
+      new ItemInvoicesTransactionsTransformer(),
+    );
+  }
+
+  /**
+   * Retrieve the item associated invoices transactions.
+   * @param {number} itemId
+   * @returns
+   */
+  public async getItemBillTransactions(itemId: number) {
+    const billEntries = await this.itemEntry.query()
+      .where('itemId', itemId)
+      .where('referenceType', 'Bill')
+      .withGraphJoined('bill.vendor(selectVendorColumns)')
+      .orderBy('bill:billDate', 'ASC')
+      .modifiers({
+        selectVendorColumns: (builder) => {
+          builder.select('displayName', 'currencyCode', 'id');
+        },
+      });
+    // Retrieves the transformed bill entries.
+    return this.transformer.transform(
+      billEntries,
+      new ItemBillTransactionTransformer(),
+    );
+  }
+
+  /**
+   * Retrieves the item associated estimates transactions.
+   * @param {number} itemId
+   * @returns
+   */
+  public async getItemEstimateTransactions(itemId: number) {
+    const estimatesEntries = await this.itemEntry.query()
+      .where('itemId', itemId)
+      .where('referenceType', 'SaleEstimate')
+      .withGraphJoined('estimate.customer(selectCustomerColumns)')
+      .orderBy('estimate:estimateDate', 'ASC')
+      .modifiers({
+        selectCustomerColumns: (builder) => {
+          builder.select('displayName', 'currencyCode', 'id');
+        },
+      });
+    // Retrieves the transformed estimates entries.
+    return this.transformer.transform(
+      estimatesEntries,
+      new ItemEstimateTransactionTransformer(),
+    );
+  }
+
+  /**
+   * Retrieves the item associated receipts transactions.
+   * @param {number} itemId
+   * @returns
+   */
+  public async getItemReceiptTransactions(itemId: number) {
+    const receiptsEntries = await this.itemEntry.query()
+      .where('itemId', itemId)
+      .where('referenceType', 'SaleReceipt')
+      .withGraphJoined('receipt.customer(selectCustomerColumns)')
+      .orderBy('receipt:receiptDate', 'ASC')
+      .modifiers({
+        selectCustomerColumns: (builder) => {
+          builder.select('displayName', 'currencyCode', 'id');
+        },
+      });
+    // Retrieves the transformed receipts entries.
+    return this.transformer.transform(
+      receiptsEntries,
+      new ItemReceiptTransactionTransformer(),
+    );
+  }
+}