Backend (express)

express.assign10/app/server2.js

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+//import express from "express";
+var express = require("express");
+var router = express.Router();
+var Pool = require('pg').Pool;
+var pool = new Pool({
+    user: 'postgres',
+    host: 'localhost',
+    database: 'postgres',
+    password: '123456',
+    port: 5432
+});
+//SENDS ALL MEMBERS OF JSON DATA
+router.get("/", function (req, res) {
+    var query = "SELECT U.id, U.\"first__name\", U.\"middle__name\", U.\"last__name\", U.email, U.\"phone_number\", \n    U.address,U.datetime, U.name as \"customer_Name\", role.name as role FROM (\n    SELECT users.*, customer.name  FROM users INNER JOIN customer ON users.\"customer_id\"=customer.id)\n     as U INNER JOIN role on U.role=role.name ORDER BY U.id;";
+    pool.query(query, function (error, result) {
+        if (error) {
+            throw error;
+        }
+        console.log(result.rows);
+        res.status(200).json(result.rows);
+    });
+});
+//SEND A SPECIFIC MEMEBER FROM JSON DATA
+router.get("/:id", function (req, res) {
+    var id = req.params.id;
+    var query = "SELECT U.id, U.\"first__name\", U.\"middle__name\", U.\"last__name\", U.email, U.\"phone_number\", \n    U.address,U.datetime, U.name as \"customer_Name\", role.name as role FROM (\n    SELECT users.*, customer.name  FROM users INNER JOIN customer ON users.\"customer_id\"=customer.id) \n     as U INNER JOIN role on U.role=role.name where U.id=" + id + ";";
+    pool.query(query, function (error, result) {
+        if (error) {
+            throw error;
+        }
+        console.log(result.rows);
+        res.status(200).json(result.rows);
+    });
+});
+//ADD MEMBER TO THE EXISTING JSON
+router.post("/", function (req, res) {
+    var newValue = {
+        ID: req.body.id,
+        First__Name: req.body.first__name,
+        Middle__Name: req.body.middle__name,
+        Last__Name: req.body.last__name,
+        Email: req.body.email,
+        Phone_Number: req.body.phone_number,
+        Role: req.body.role,
+        Address: req.body.address,
+        DateTime: req.body.datetime,
+        CustomerName: req.body.customer_Name
+    };
+    console.log(newValue);
+    if (!newValue.First__Name || !newValue.Last__Name || !newValue.Email || !newValue.Phone_Number || !newValue.Role || !newValue.Address || !newValue.CustomerName) {
+        res.status(400).json({ message: "Give Correct Input" });
+    }
+    // else if (data.some(data => newValue.Phone_Number === data.Phone_Number)) {
+    //     res.status(400).json({ message: `User Already Exists` })
+    // }
+    else {
+        pool.query("SELECT id FROM users where \"phone_number\" ='" + newValue.Phone_Number + "'", function (error, result) {
+            if (error) {
+                throw error;
+            }
+            if (result.rows.length !== 0) {
+                console.log(result);
+                res.status(400).json({ message: "User Already Exists" });
+            }
+            else {
+                var Sid = "select id from customer where name='" + newValue.CustomerName + "';";
+                pool.query(Sid, function (error, results) {
+                    if (error) {
+                        throw error;
+                    }
+                    var query = "INSERT into users (\"first__name\", \"middle__name\", \"last__name\", \"email\", \"phone_number\", \"role\", \"address\",\"datetime\",\"customer_id\") VALUES ('" + newValue.First__Name + "','" + newValue.Middle__Name + "','" + newValue.Last__Name + "','" + newValue.Email + "','" + newValue.Phone_Number + "','" + newValue.Role + "','" + newValue.Address + "','" + newValue.DateTime + "','" + results.rows[0].id + "');";
+                    pool.query(query, function (error, results) {
+                        if (error) {
+                            throw error;
+                        }
+                        res.status(200).json({ message: "Added User Successfully !", addedRecord: newValue });
+                    });
+                });
+            }
+        });
+    }
+});
+//EDIT MEMBER
+router.put('/:id', function (req, res) {
+    var id = req.params.id;
+    pool.query("SELECT * FROM users where id =" + id, function (error, result) {
+        if (error) {
+            throw error;
+        }
+        if (result.rows.length === 0) {
+            res.status(400).json({ message: "User Not Exists" });
+        }
+        else {
+            var firstName_1 = req.body.first__name;
+            var middleName_1 = req.body.middle__name;
+            var lastName_1 = req.body.last__name;
+            var email_1 = req.body.email;
+            var phoneNumber_1 = req.body.phone_number;
+            var address_1 = req.body.address;
+            var dateTime_1 = req.body.datetime;
+            var customerN = req.body.customer_Name;
+            var role_1 = req.body.role;
+            // if (phoneNumber.length !== 10) {
+            //     res.status(400).json({ message: `Give Correct Input` })
+            //     return
+            // }
+            var Sid = "select id from customer where name='" + customerN + "';";
+            pool.query(Sid, function (error, result) {
+                if (error) {
+                    throw error;
+                }
+                else {
+                    var query = "UPDATE users SET \"first__name\"='" + firstName_1 + "', \"middle__name\"='" + middleName_1 + "', \"last__name\"='" + lastName_1 + "', \"email\"='" + email_1 + "', \"phone_number\"=" + phoneNumber_1 + ",\"role\"='" + role_1 + "', \"address\"='" + address_1 + "', \"datetime\"='"+dateTime_1+"',\"customer_id\"='" + result.rows[0].id + "' where id=" + id + ";";
+                    console.log(query);
+                    pool.query(query, function (error, result) {
+                        if (error) {
+                            throw error;
+                        }
+                        res.status(200).json({
+                            message: "Updated Row with id = " + id + " Successfully",
+                            updatedRecord: {
+                                id: id,
+                                first__name: firstName_1,
+                                middle__name: middleName_1,
+                                last__name: lastName_1,
+                                email: email_1,
+                                phone__number: phoneNumber_1,
+                                role: role_1,
+                                address: address_1,
+                                datetime: dateTime_1
+                            }
+                        });
+                    });
+                }
+            });
+        }
+    });
+});
+//DELETE MEMBER
+router["delete"]('/:id', function (req, res) {
+    var id = req.params.id;
+    pool.query("SELECT * FROM users where id =" + id, function (error, result) {
+        if (error) {
+            throw error;
+        }
+        if (result.rows.length === 0) {
+            res.status(400).json({ message: "User Not Exists" });
+        }
+        else {
+            var query = "DELETE from users where id=" + id + ";";
+            console.log(query);
+            pool.query(query, function (error, result) {
+                if (error) {
+                    throw error;
+                }
+                res.status(200).json({ message: "Deleted Row with id = " + id + " Successfully !" });
+            });
+        }
+    });
+});
+module.exports = router;