added backend implementation

backend/controller/customers.js

@@ -0,0 +1,114 @@
+//import functions from customers model
+import {
+    getCustomers,
+    getSelectedCustomers,
+    getCustomerByProductionOrderId,
+    getCustomerByMaintenanceVisitId,
+    insertCustomer,
+    getCustomerByCustomerId,
+    getCustomerByName,
+    updateCustomerById,
+    deleteCustomerById,
+} from "../models/customerModel.js";
+
+//get all customers
+export const showCustomers = (req, res) => {
+    getCustomers((err, results) => {
+        if (err) {
+            res.send(err);
+        } else {
+            res.json(results);
+        }
+    });
+};
+
+//create new customer
+export const createCustomer = (req, res) => {
+    const data = req.body;
+    insertCustomer(data, (err, results) => {
+        if (err) {
+            res.send(err);
+        } else {
+            res.json(results);
+        }
+    });
+};
+
+//get all selected customers
+export const showSelectedCustomers = (req, res) => {
+    getSelectedCustomers(req.params.id, (err, results) => {
+        if (err) {
+            res.send(err);
+        } else {
+            res.json(results);
+        }
+    });
+};
+
+//get single customer by production order id
+export const showCustomerByProductionOrderId = (req, res) => {
+    getCustomerByProductionOrderId(req.params.id, (err, results) => {
+        if (err) {
+            res.send(err);
+        } else {
+            res.json(results);
+        }
+    });
+};
+
+//get single customer by maintenance visit id
+export const showCustomerByMaintenanceVisitId = (req, res) => {
+    getCustomerByMaintenanceVisitId(req.params.id, (err, results) => {
+        if (err) {
+            res.send(err);
+        } else {
+            res.json(results);
+        }
+    });
+};
+
+//get single customer by customer id
+export const showCustomerByCustomerId = (req, res) => {
+    getCustomerByCustomerId(req.params.id, (err, results) => {
+        if (err) {
+            res.send(err);
+        } else {
+            res.json(results);
+        }
+    });
+};
+
+//get single customer by name
+export const showCustomerByName = (req, res) => {
+    getCustomerByName(req.params.id, (err, results) => {
+        if (err) {
+            res.send(err);
+        } else {
+            res.json(results);
+        }
+    });
+};
+
+// Update customer
+export const updateCustomer = (req, res) => {
+    const data = req.body;
+    updateCustomerById(data, (err, results) => {
+        if (err) {
+            res.send(err);
+        } else {
+            res.json(results);
+        }
+    });
+};
+
+// Delete customer
+export const deleteCustomer = (req, res) => {
+    const id = req.params.id;
+    deleteCustomerById(id, (err, results) => {
+        if (err) {
+            res.send(err);
+        } else {
+            res.json(results);
+        }
+    });
+};