fix issues in sales and purchases API module.

server/src/http/controllers/Purchases/BillsPayments.ts

@@ -157,10 +157,18 @@ export default class BillsPayments extends BaseController {
    * @param {Function} res 
    */
   static async validatePaymentNumber(req: Request, res: Response, next: any) {
-    const { BillPayment } = req.models;
     const billPayment = { ...req.body };
+    const { id: billPaymentId } = req.params;
+    const { BillPayment } = req.models;
+  
     const foundBillPayment = await BillPayment.query()
-      .where('payment_number', billPayment.payment_number)
+      .onBuild((builder: any) => {
+        builder.where('payment_number', billPayment.payment_number)
+
+        if (billPaymentId) {
+          builder.whereNot('id', billPaymentId);
+        }
+      })
       .first();
  
     if (foundBillPayment) {
@@ -283,7 +291,20 @@ export default class BillsPayments extends BaseController {
    */
   static async editBillPayment(req: Request, res: Response) {
     const billPayment = { ...req.body };
+    const { id: billPaymentId } = req.params;
 
+    const { BillPayment } = req.models;
+
+    const oldBillPayment = await BillPayment.query()
+      .where('id', billPaymentId)
+      .withGraphFetched('entries')
+      .first();
+
+    await BillPaymentsService.editBillPayment(
+      billPaymentId,
+      billPayment,
+      oldBillPayment,
+    );
     return res.status(200).send({ id: 1 });
   }
 

server/src/models/Vendor.js

@@ -31,18 +31,25 @@ export default class Vendor extends TenantModel {
       [changeMethod]('balance', Math.abs(amount));
   }  
 
+  /**
+   * 
+   * @param {number} vendorId - Specific vendor id.
+   * @param {number} oldVendorId - The given old vendor id.
+   * @param {number} amount - The new change amount.
+   * @param {number} oldAmount - The old stored amount.
+   */
   static changeDiffBalance(vendorId, oldVendorId, amount, oldAmount) {
-    const diffAmount = (amount - oldAmount) * -1;
+    const diffAmount = (amount - oldAmount);
     const asyncOpers = [];
 
     if (vendorId != oldVendorId) {
       const oldVendorOper = Vendor.changeBalance(
         oldVendorId,
-        oldAmount
+        (oldAmount * -1)
       );
       const vendorOper = Vendor.changeBalance(
         vendorId,
-        (amount + diffAmount) * -1
+        amount,
       );
       asyncOpers.push(vendorOper);
       asyncOpers.push(oldVendorOper);

server/src/services/Purchases/BillPayments.js

@@ -145,9 +145,9 @@ export default class BillPaymentsService {
     // Change the different vendor balance between the new and old one.
     const changeDiffBalance = Vendor.changeDiffBalance(
       billPayment.vendor_id,
-      oldBillPayment.vendor_id,
-      billPayment.amount,
-      oldBillPayment.amount
+      oldBillPayment.vendorId,
+      billPayment.amount * -1,
+      oldBillPayment.amount * -1,
     );
     await Promise.all([
       ...opers,

server/src/services/Purchases/Bills.js

@@ -79,10 +79,11 @@ export default class BillsService {
    * - Re-write the inventory transactions.
    * - Re-write the bill journal transactions.
    *
-   * @param {Integer} billId
-   * @param {IBill} bill
+   * @param {Integer} billId - The given bill id.
+   * @param {IBill} bill - The given new bill details.
    */
   static async editBill(billId, bill) {
+    const oldBill = await Bill.tenant().query().findById(billId);
     const amount = sumBy(bill.entries, 'amount');
 
     // Update the bill transaction.
@@ -104,12 +105,20 @@ export default class BillsService {
     const patchEntriesOper = HasItemsEntries.patchItemsEntries(
       bill.entries, storedEntries, 'Bill', billId,
     );
+    // Changes the diff vendor balance between old and new amount.
+    const changeVendorBalanceOper = Vendor.changeDiffBalance(
+      bill.vendor_id,
+      oldBill.vendorId,
+      amount,
+      oldBill.amount,
+    );
     // Record bill journal transactions.
     const recordTransactionsOper = this.recordJournalTransactions(bill, billId);
 
     await Promise.all([
       patchEntriesOper,
       recordTransactionsOper,
+      changeVendorBalanceOper,
     ]);
   }
 
@@ -249,7 +258,7 @@ export default class BillsService {
       'Bill'
     );
     // Revert vendor balance.
-    const revertVendorBalance = Vendor.changeBalance(billId, bill.amount * -1);
+    const revertVendorBalance = Vendor.changeBalance(bill.vendorId, bill.amount * -1);
   
     await Promise.all([
       deleteBillOper,

server/src/services/Sales/PaymentsReceives.ts

@@ -100,8 +100,8 @@ export default class PaymentReceiveService {
         ...omit(paymentReceive, ['entries']),
       });
     const opers = [];
-    const entriesIds = paymentReceive.entries.filter((i) => i.id);
-    const entriesShouldInsert = paymentReceive.entries.filter((i) => !i.id);
+    const entriesIds = paymentReceive.entries.filter((i: any) => i.id);
+    const entriesShouldInsert = paymentReceive.entries.filter((i: any) => !i.id);
 
     // Detarmines which entries ids should be deleted.
     const entriesIdsShouldDelete = ServiceItemsEntries.entriesShouldDeleted(
@@ -142,7 +142,7 @@ export default class PaymentReceiveService {
       paymentReceive.customer_id,
       oldPaymentReceive.customerId,
       paymentAmount * -1,
-      oldPaymentReceive.amount,
+      oldPaymentReceive.amount * -1,
     );
     // Change the difference between the old and new invoice payment amount.
     const diffInvoicePaymentAmount = this.saveChangeInvoicePaymentAmount(

server/src/services/Sales/SalesInvoices.ts

@@ -43,6 +43,7 @@ export default class SaleInvoicesService {
         });
       opers.push(oper);
     });
+    // Increment the customer balance after deliver the sale invoice.
     const incrementOper = Customer.incrementBalance(
       saleInvoice.customer_id,
       balance,