fix: database migrations FK relations.

fix: database columns indexing.

server/src/models/Customer.js

@@ -1,81 +0,0 @@
-import { Model } from 'objection';
-import TenantModel from 'models/TenantModel';
-
-export default class Customer extends TenantModel {
-  /**
-   * Table name
-   */
-  static get tableName() {
-    return 'customers';
-  }
-
-  /**
-   * Model timestamps.
-   */
-  get timestamps() {
-    return ['createdAt', 'updatedAt'];
-  }
-
-  /**
-   * Model modifiers.
-   */
-  static get modifiers() {
-    return {
-      filterCustomerIds(query, customerIds) {
-        query.whereIn('id', customerIds);
-      },
-    };
-  }
-
-  /**
-   * Change vendor balance.
-   * @param {Integer} customerId 
-   * @param {Numeric} amount 
-   */
-  static async changeBalance(customerId, amount) {
-    const changeMethod = (amount > 0) ? 'increment' : 'decrement';
-
-    return this.query()
-      .where('id', customerId)
-      [changeMethod]('balance', Math.abs(amount));
-  }
-
-  /**
-   * Increment the given customer balance.
-   * @param {Integer} customerId
-   * @param {Integer} amount
-   */
-  static async incrementBalance(customerId, amount) {
-    return this.query()
-      .where('id', customerId)
-      .increment('balance', amount);
-  }
-
-  /**
-   * Decrement the given customer balance.
-   * @param {integer} customerId -
-   * @param {integer} amount -
-   */
-  static async decrementBalance(customerId, amount) {
-    await this.query()
-      .where('id', customerId)
-      .decrement('balance', amount);
-  }
-
-  static changeDiffBalance(customerId, oldCustomerId, amount, oldAmount) {
-    const diffAmount = amount - oldAmount;
-    const asyncOpers = [];
-
-    if (customerId != oldCustomerId) {
-      const oldCustomerOper = this.changeBalance(oldCustomerId, (oldAmount * -1));
-      const customerOper = this.changeBalance(customerId, amount);
-
-      asyncOpers.push(customerOper);
-      asyncOpers.push(oldCustomerOper);
-    } else {
-      const balanceChangeOper = this.changeBalance(customerId, diffAmount);
-      asyncOpers.push(balanceChangeOper);
-    }
-    return Promise.all(asyncOpers);
-  }
-}