feat: rewrite repositories with base entity repository class.

feat: sales and purchases status.
feat: sales and purchases auto-increment number.
fix: settings find query with extra columns.

server/src/repositories/CustomerRepository.ts

@@ -1,75 +1,16 @@
 import TenantRepository from "./TenantRepository";
-
+import { Customer } from 'models'
 export default class CustomerRepository extends TenantRepository {
-  all() {
-    const { Contact } = this.models;
-
-    return this.cache.get('customers', () => {
-      return Contact.query().modify('customer');
-    });
-  }
-
   /**
-   * Retrieve customer details of the given id.
-   * @param {number} customerId - Customer id.
+   * Constructor method.
    */
-  getById(customerId: number) {
-    const { Contact } = this.models;
-
-    return this.cache.get(`customers.id.${customerId}`, () => {
-      return Contact.query().modifier('customer').findById(customerId);
-    });
-  }
-
-  /**
-   * Detarmines the given customer exists.
-   * @param {number} customerId 
-   * @returns {boolean}
-   */
-  isExists(customerId: number) {
-    return !!this.getById(customerId);
-  }
-
-  /**
-   * Retrieve the sales invoices that assocaited to the given customer.
-   * @param {number} customerId 
-   */
-  getSalesInvoices(customerId: number) {
-    const { SaleInvoice } = this.models;
-
-    return this.cache.get(`customers.invoices.${customerId}`, () => {
-      return SaleInvoice.query().where('customer_id', customerId);
-    });
-  }
-
-  /**
-   * Retrieve customers details of the given ids.
-   * @param  {number[]} customersIds - Customers ids.
-   * @return {IContact[]}
-   */
-  customers(customersIds: number[]) {
-    const { Contact } = this.models;
-    return Contact.query().modifier('customer').whereIn('id', customersIds);
-  }
-  
-  /**
-   * Retrieve customers of the given ids with associated sales invoices.
-   * @param {number[]} customersIds - Customers ids.
-   */
-  customersWithSalesInvoices(customersIds: number[]) {
-    const { Contact } = this.models;
-    return Contact.query().modify('customer')
-      .whereIn('id', customersIds)
-      .withGraphFetched('salesInvoices');
+  constructor(knex, cache) {
+    super(knex, cache);
+    this.model = Customer;
   }
 
   changeBalance(vendorId: number, amount: number) {
-    const { Contact } = this.models;
-    const changeMethod = (amount > 0) ? 'increment' : 'decrement';
-
-    return Contact.query()
-      .where('id', vendorId)
-      [changeMethod]('balance', Math.abs(amount));
+    return super.changeNumber({ id: vendorId }, 'balance', amount);
   }
 
   async changeDiffBalance(