feat: retrieve all due invoices and bills or for specific customer/vendor.

server/src/api/controllers/Purchases/Bills.ts

@@ -47,6 +47,14 @@ export default class BillsController extends BaseController {
       asyncMiddleware(this.editBill.bind(this)),
       this.handleServiceError,
     );
+    router.get(
+      '/due', [
+        ...this.dueBillsListingValidationSchema
+      ],
+      this.validationResult,
+      asyncMiddleware(this.getDueBills.bind(this)),
+      this.handleServiceError,
+    )
     router.get(
       '/:id', [
         ...this.specificBillValidationSchema,
@@ -140,6 +148,12 @@ export default class BillsController extends BaseController {
     ];
   }
 
+  get dueBillsListingValidationSchema() {
+    return [
+      query('vendor_id').optional().trim().escape(),
+    ]
+  }
+ 
   /**
    * Creates a new bill and records journal transactions.
    * @param {Request} req
@@ -255,6 +269,24 @@ export default class BillsController extends BaseController {
     }
   }
 
+  /**
+   * Listing all due bills of the given vendor.
+   * @param {Request} req 
+   * @param {Response} res 
+   * @param {NextFunction} next 
+   */
+  public async getDueBills(req: Request, res: Response, next: NextFunction) {
+    const { tenantId } = req;
+    const { vendorId } = this.matchedQueryData(req);
+
+    try {
+      const bills = await this.billsService.getDueBills(tenantId, vendorId);
+      return res.status(200).send({ bills });
+    } catch (error) {
+      next(error);
+    }
+  }
+
   /**
    * Handles service errors.
    * @param {Error} error 

server/src/api/controllers/Sales/SalesInvoices.ts

@@ -52,9 +52,11 @@ export default class SaleInvoicesController extends BaseController{
       this.handleServiceErrors,
     );
     router.get(
-      '/due_invoices',
+      '/due', [
-      this.dueSalesInvoicesListValidationSchema,
+        ...this.dueSalesInvoicesListValidationSchema,
-      asyncMiddleware(this.getDueSalesInvoice.bind(this)),
+      ],
+      this.validationResult,
+      asyncMiddleware(this.getDueInvoices.bind(this)),
       this.handleServiceErrors,
     );
     router.get(
@@ -210,40 +212,6 @@ export default class SaleInvoicesController extends BaseController{
       next(error);
     }
   }
-
-  /**
-   * Retrieve the due sales invoices for the given customer.
-   * @param {Request} req 
-   * @param {Response} res 
-   */
-  async getDueSalesInvoice(req: Request, res: Response) {
-    const { Customer, SaleInvoice } = req.models;
-    const { tenantId } = req;
-
-    const filter = {
-      customer_id: null,
-      ...req.query,
-    };
-    if (filter.customer_id) {
-      const foundCustomer = await Customer.query().findById(filter.customer_id);
-
-      if (!foundCustomer) {
-        return res.status(200).send({
-          errors: [{ type: 'CUSTOMER.NOT.FOUND', code: 200 }],
-        });
-      }
-    }    
-    const dueSalesInvoices = await SaleInvoice.query().onBuild((query) => {
-      query.where(raw('BALANCE - PAYMENT_AMOUNT > 0'));
-      if (filter.customer_id) {
-        query.where('customer_id', filter.customer_id);
-      }
-    });
-    return res.status(200).send({
-      due_sales_invoices: dueSalesInvoices, 
-    });
-  }
-
   /**
    * Retrieve paginated sales invoices with custom view metadata.
    * @param {Request} req
@@ -276,6 +244,28 @@ export default class SaleInvoicesController extends BaseController{
     }
   }
 
+  /**
+   * Retrieve due sales invoices.
+   * @param {Request} req - 
+   * @param {Response} res - 
+   * @param {NextFunction} next - 
+   * @return {Response|void}
+   */
+  public async getDueInvoices(req: Request, res: Response, next: NextFunction) {
+    const { tenantId } = req;
+    const { customerId } = this.matchedQueryData(req);
+
+    try {
+      const salesInvoices = await this.saleInvoiceService.getDueInvoices(tenantId, customerId);
+
+      return res.status(200).send({
+        sales_invoices: this.transfromToResponse(salesInvoices),
+      });
+    } catch (error) {
+      next(error);
+    }
+  }
+
   /**
    * Handles service errors.
    * @param {Error} error 

server/src/models/Bill.js

@@ -1,4 +1,4 @@
-import { Model } from 'objection';
+import { Model, raw } from 'objection';
 import { difference } from 'lodash';
 import TenantModel from 'models/TenantModel';
 
@@ -21,6 +21,14 @@ export default class Bill extends TenantModel {
     return true;
   }
 
+  static get modifiers() {
+    return {
+      dueBills(query) {
+        query.where(raw('AMOUNT - PAYMENT_AMOUNT > 0'));
+      }
+    }
+  }
+
   /**
    * Timestamps columns.
    */

server/src/models/SaleInvoice.js

@@ -1,4 +1,4 @@
-import { Model, mixin } from 'objection';
+import { Model, raw } from 'objection';
 import moment from 'moment';
 import TenantModel from 'models/TenantModel';
 
@@ -33,6 +33,10 @@ export default class SaleInvoice extends TenantModel {
    */
   static get modifiers() {
     return {
+      dueInvoices(query) {
+        query.where(raw('BALANCE - PAYMENT_AMOUNT > 0'));
+      },
+
       filterDateRange(query, startDate, endDate, type = 'day') {
         const dateFormat = 'YYYY-MM-DD HH:mm:ss';
         const fromDate = moment(startDate).startOf(type).format(dateFormat);

server/src/services/Purchases/Bills.ts

@@ -27,6 +27,7 @@ import {
 import { ServiceError } from 'exceptions';
 import ItemsService from 'services/Items/ItemsService';
 import ItemsEntriesService from 'services/Items/ItemsEntriesService';
+import { Bill } from 'models';
 
 const ERRORS = {
   BILL_NOT_FOUND: 'BILL_NOT_FOUND',
@@ -135,7 +136,7 @@ export default class BillsService extends SalesInvoicesCost {
    * 
    * @returns {IBill}
    */
-  private async billDTOToModel(tenantId: number, billDTO: IBillDTO|IBillEditDTO, oldBill?: IBill) {
+  private async billDTOToModel(tenantId: number, billDTO: IBillDTO | IBillEditDTO, oldBill?: IBill) {
     const { ItemEntry } = this.tenancy.models(tenantId);
     let invLotNumber = oldBill?.invLotNumber;
 
@@ -415,6 +416,27 @@ export default class BillsService extends SalesInvoicesCost {
     };
   }
 
+  /**
+   * Retrieve all due bills or for specific given vendor id.
+   * @param {number} tenantId - 
+   * @param {number} vendorId - 
+   */
+  public async getDueBills(
+    tenantId: number,
+    vendorId?: number
+  ): Promise<IBill[]> {
+    const { Bill } = this.tenancy.models(tenantId);
+
+    const dueBills = await Bill.query().onBuild((query) => {
+      query.modify('dueBills');
+
+      if (vendorId) {
+        query.where('vendor_id', vendorId);
+      }
+    });
+    return dueBills;
+  }
+
   /**
    * Retrieve the given bill details with associated items entries.
    * @param {Integer} billId - Specific bill.

server/src/services/Sales/SalesInvoices.ts

@@ -407,4 +407,25 @@ export default class SaleInvoicesService extends SalesInvoicesCost {
       filterMeta: dynamicFilter.getResponseMeta(),
     };
   }
+
+  /**
+   * Retrieve due sales invoices.
+   * @param {number} tenantId 
+   * @param {number} customerId 
+   */
+  public async getDueInvoices(
+    tenantId: number,
+    customerId?: number,
+  ): Promise<ISaleInvoice> {
+    const { SaleInvoice } = this.tenancy.models(tenantId);
+
+    const salesInvoices = await SaleInvoice.query().onBuild((query) => {
+      query.modify('dueInvoices');
+
+      if (customerId) {
+        query.where('customer_id', customerId);
+      }
+    });
+    return salesInvoices;
+  }
 }