first commit

.gitignore

@@ -0,0 +1,2 @@
+node_modules
+.env

app.js

@@ -0,0 +1,31 @@
+require("dotenv").config();
+const express = require("express");
+const connectDB= require("./config/db");
+const userRoutes= require("./routes/userRoutes");
+const app= express();
+const PORT = process.env.PORT || 5000;
+//DB connection:Done
+connectDB();
+
+//Routes
+app.use("/api/users",userRoutes);
+app.listen(PORT,()=>{
+    console.log(`Server is running on port ${PORT}`);
+})
+
+
+// const logger = require("./middleware/logger");
+// const userRoutes = require("./routes/userRoutes");
+
+// const app = express();
+// const PORT = process.env.PORT || 5000;
+
+// connectDB();
+
+// app.use(express.json());
+// app.use(logger); // custom middleware
+// app.use("/api/users", userRoutes);
+
+// app.listen(PORT, () => {
+//   console.log(`Server is running on port ${PORT}`);
+// });

config/db.js

@@ -0,0 +1,12 @@
+const mongoose = require("mongoose");
+const connectDB = async()=>{
+    try{
+        await mongoose.connect(process.env.MONGO_URI);
+        console.log("MongoDB connected!");
+    }catch(err){
+        console.error("DB connection failed:",err.message);
+        process.exit(1);
+    }
+}
+
+module.exports = connectDB;

controllers/userController.js

@@ -0,0 +1,66 @@
+const User = require("../models/User");
+
+//POST
+const createUser = async (req, res) => {
+  try {
+    const user = await User.create(req.body);
+    res.status(201).json(user);
+  } catch (err) {
+    res.status(400).json({ error: err.message });
+  }
+};
+
+//GET
+const getUsers = async (req, res) => {
+  try {
+    const users = await User.find();
+    res.status(200).json(users);
+  } catch (err) {
+    res.status(400).json({ error: err.message });
+  }
+};
+
+//GET by id
+const getUserById = async (req,res)=>{
+    try {
+        const user = await User.findById(req.params.id);
+        if(!user){
+            return res.status(404).json({error: "User not found"})
+        }
+        res.status(200).json(user);
+    } catch (err) {
+       res.status(400).json({ error: err.message });
+    }
+};
+//UPDATE
+const updateUser = async(req,res)=>{
+    try {
+        const user = await User.findByIdAndUpdate(req.params.id,req.body,{
+            new:true,
+        });
+        res.status(200).json(user);
+    } catch (err) {
+        res.status(400).json({ error: err.message });
+    }
+};
+//DELETE 
+const deleteUser= async(req,res)=>{
+    try {
+         const user = await User.findByIdAndDelete(req.params.id);
+         if(!user){
+            return res.status(404).json({message: "User not found"});
+         }
+    } catch (error) {
+         res.status(400).json({ error: err.message });
+    }
+   
+
+}
+module.exports = {
+  createUser,
+  getUsers,
+  getUserById,
+  updateUser,
+  deleteUser
+};
+

models/User.js

@@ -0,0 +1,19 @@
+const mongoose = require("mongoose");
+const userSchema = new mongoose.Schema({
+    first_name:{
+        type:String,
+        required:true
+    },
+    last_name:{
+        type:String,
+    },
+    email:{
+        type:String,
+        required:true,
+        unique:true
+    },
+    age:{
+        type:Number
+    }
+})
+module.exports = mongoose.model("User",userSchema);

package.json

@@ -0,0 +1,20 @@
+{
+  "name": "mini-crud",
+  "version": "1.0.0",
+  "main": "app.js",
+  "scripts": {
+    "start":"nodemon app.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "dotenv": "^16.5.0",
+    "express": "^5.1.0",
+    "mongodb": "^6.16.0",
+    "mongoose": "^8.15.1",
+    "nodemon": "^3.1.10"
+  }
+}

routes/userRoutes.js

@@ -0,0 +1,9 @@
+const express = require("express");
+const { createUser, getUsers, getUserById, updateUser, deleteUser } = require("../controllers/userController");
+const router =express.Router();
+
+router.post("/", createUser);
+router.get('/',getUsers);
+router.get('/:id',getUserById);
+router.put('/:id',updateUser);
+router.delete(':/id',deleteUser)