completed route, get employee by id

.gitignore

@@ -1 +1,2 @@
-node_modules
+node_modules
+.env

controller/employees.js

@@ -0,0 +1,32 @@
+const mysql = require('mysql')
+const pool = require('../mysql/connection') //update this folder location when its made
+
+
+
+const getEmployees = (req, res) => {
+  pool.query("SELECT * FROM employees LIMIT 50", (err, rows) => {
+    // if (err) return handleSQLError(res, err)
+    return res.json(rows);
+  })
+}
+
+const getEmployeeById = (req, res) => { 
+  let sql = "SELECT * FROM employees WHERE emp_no = ?"
+  let id = req.params.id
+  sql = mysql.format(sql, [id])
+
+  pool.query(sql, (err, rows) => {
+    // if (err) return handleSQLError(res, err)
+    return res.json(rows);
+  })
+}
+
+const getEmployeeById2 = (req, res) => { 
+  res.send("getting employees")
+}
+
+
+
+
+
+module.exports = { getEmployees, getEmployeeById, getEmployeeById2 }

index.js

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+const express = require("express");
+const bodyParser = require("body-parser");
+
+const pool = require('./mysql/connection')
+
+const employeesRouter = require('./routes/employees')
+
+
+const app = express();
+const port = process.env.PORT || 4001;
+
+app.use(bodyParser.json())
+app.use('/employees', employeesRouter)
+
+
+app.get('/', (req, res) => {
+  res.send('Welcome to our server!')
+})
+
+app.listen(port, () => {
+ console.log(`Web server is listening on port ${port}!`);
+});

mysql/connection.js

@@ -0,0 +1,31 @@
+const mysql = require('mysql')
+require('dotenv').config()
+
+const host = process.env.HOST
+const username = process.env.USERNAME
+const password = process.env.PASSWORD
+const database = process.env.DATABASE
+
+class Connection {
+  constructor() {
+    if (!this.pool) {
+      console.log('creating connection...')
+      console.log(host, username, password, database)
+      this.pool = mysql.createPool({
+        connectionLimit: 100,
+        host: host,
+        user: username,
+        password: password,
+        database: database
+      })
+      console.log("success")
+      return this.pool
+    }
+
+    return this.pool
+  }
+}
+
+const instance = new Connection()
+
+module.exports = instance;