app.js

@@ -2,30 +2,23 @@ require("dotenv").config();
 const express = require("express");
 const connectDB= require("./config/db");
 const userRoutes= require("./routes/userRoutes");
+const authRoutes = require("./routes/authRoutes");
+const logger = require('./middleware/logger')
 const app= express();
 const PORT = process.env.PORT || 5000;
 //DB connection:Done
 connectDB();
 
+//use in built-middleware to parse the data form body
+//parse the json data
+app.use(express.json());
+//parse the url-encoded data
+app.use(express.urlencoded({ extended: false }));
+app.use(logger);
 //Routes
 app.use("/api/users",userRoutes);
+
+app.use("/api/user", authRoutes);
 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

@@ -1,4 +1,5 @@
 const mongoose = require("mongoose");
+
 const connectDB = async()=>{
     try{
         await mongoose.connect(process.env.MONGO_URI);
@@ -9,4 +10,7 @@ const connectDB = async()=>{
     }
 }
 
-module.exports = connectDB;
+module.exports = connectDB;
+
+
+

controllers/authController.js

@@ -0,0 +1,58 @@
+const User = require("../models/User");
+const jwt = require("jsonwebtoken");
+
+const generateToken = (id) => {
+  return jwt.sign({ id }, process.env.JWT_SECRET, { expiresIn: "1h" });
+};
+
+//Register
+const registerUser = async (req, res) => {
+  const { username, email, password } = req.body;
+
+  try {
+    const userExists = await User.findOne({ email });
+    if (userExists)
+      return res.status(400).json({ message: "User already exists" });
+
+    const user = await User.create({ username, email, password });
+
+    res.status(201).json({
+      _id: user._id,
+      username: user.username,
+      email: user.email,
+      token: generateToken(user._id),
+    });
+  } catch (error) {
+  console.error("Error in registerUser:", error.message);
+  res.status(500).json({ message: "Server error" });
+}
+
+};
+//Login
+const loginUser = async (req, res) => {
+  const { email, password } = req.body;
+
+  try {
+    const user = await User.findOne({ email });
+    if (!user) return res.status(400).json({ message: "Invalid credentials" });
+
+    const isMatch = await user.matchPassword(password);
+    if (!isMatch)
+      return res.status(400).json({ message: "Invalid credentials" });
+
+    res.status(200).json({
+      _id: user._id,
+      username: user.username,
+      email: user.email,
+      token: generateToken(user._id),
+      message: "success",
+    });
+  } catch (error) {
+    res.status(500).json({ message: "Server error" });
+  }
+};
+const getProfile = async (req, res) => {
+  res.json(req.user);
+};
+
+module.exports = { registerUser, loginUser, getProfile };

controllers/userController.js

@@ -6,17 +6,18 @@ const createUser = async (req, res) => {
     const user = await User.create(req.body);
     res.status(201).json(user);
   } catch (err) {
-    res.status(400).json({ error: err.message });
+    res.status(500).json({ error: err.message });
   }
 };
 
-//GET
+//GET  
+//if i use findOne then it fetching the first match data
 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 });
+    res.status(500).json({ error: err.message });
   }
 };
 
@@ -29,18 +30,19 @@ const getUserById = async (req,res)=>{
         }
         res.status(200).json(user);
     } catch (err) {
-       res.status(400).json({ error: err.message });
+       res.status(500).json({ error: err.message });
     }
 };
-//UPDATE
+//UPDATE 
 const updateUser = async(req,res)=>{
     try {
         const user = await User.findByIdAndUpdate(req.params.id,req.body,{
-            new:true,
+            new:true,//return updated document
         });
+        if(!user) return res.status(404).json({message: "User Not Found."})
         res.status(200).json(user);
     } catch (err) {
-        res.status(400).json({ error: err.message });
+        res.status(500).json({ error: err.message });
     }
 };
 //DELETE 
@@ -50,8 +52,9 @@ const deleteUser= async(req,res)=>{
          if(!user){
             return res.status(404).json({message: "User not found"});
          }
-    } catch (error) {
-         res.status(400).json({ error: err.message });
+         res.status(200).json({message:"success"})
+    } catch (err) {
+         res.status(500).json({ error: err.message });
     }
    
 

middleware/authMiddleware.js

@@ -0,0 +1,24 @@
+const jwt = require("jsonwebtoken");
+const User = require("../models/User");
+
+const authToken = async (req, res, next) => {
+  let token;
+  if (
+    req.headers.authorization &&
+    req.headers.authorization.startsWith("Bearer")
+  ) {
+    try {
+      token = req.headers.authorization.split(" ")[1]; // Correct split by space
+      const decoded = jwt.verify(token, process.env.JWT_SECRET);
+      req.user = await User.findById(decoded.id).select("-password");
+      next();
+    } catch (error) {
+      console.error(error);
+      res.status(401).json({ message: "Not authorized, token failed" });
+    }
+  } else {
+    res.status(401).json({ message: "Not authorized, no token" });
+  }
+};
+
+module.exports = authToken;

middleware/logger.js

@@ -0,0 +1,6 @@
+// logger.js
+function logger(req, res, next) {
+  console.log(`${req.method} ${req.url} at ${new Date().toISOString()}`);
+  next(); 
+}
+module.exports = logger;

models/User.js

@@ -1,19 +1,41 @@
 const mongoose = require("mongoose");
+const bcrypt = require("bcrypt");
 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);
+  first_name: {
+    type: String,
+    required: false,
+  },
+  last_name: {
+    type: String,
+  },
+  email: {
+    type: String,
+    required: true,
+    unique: true,
+  },
+  age: {
+    type: Number,
+  },
+  username: {
+    type: String,
+    required: true,
+    unique: true,
+  },
+  password: {
+    type: String,
+    required: true,
+  },
+});
+
+userSchema.pre("save", async function (next) {
+  if (!this.isModified("password")) return next();
+
+  const salt = await bcrypt.genSalt(10);
+  this.password = await bcrypt.hash(this.password, salt);
+  next();
+});
+
+userSchema.methods.matchPassword = async function (enteredPassword) {
+  return await bcrypt.compare(enteredPassword, this.password);
+};
+module.exports = mongoose.model("User", userSchema);

nodemon.json

@@ -0,0 +1,4 @@
+{
+  "watch": ["."],
+  "legacyWatch": true
+}

package-lock.json

@@ -9,8 +9,10 @@
       "version": "1.0.0",
       "license": "ISC",
       "dependencies": {
+        "bcrypt": "^6.0.0",
         "dotenv": "^16.5.0",
         "express": "^5.1.0",
+        "jsonwebtoken": "^9.0.2",
         "mongodb": "^6.16.0",
         "mongoose": "^8.15.1",
         "nodemon": "^3.1.10"
@@ -72,6 +74,20 @@
       "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
       "license": "MIT"
     },
+    "node_modules/bcrypt": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/bcrypt/-/bcrypt-6.0.0.tgz",
+      "integrity": "sha512-cU8v/EGSrnH+HnxV2z0J7/blxH8gq7Xh2JFT6Aroax7UohdmiJJlxApMxtKfuI7z68NvvVcmR78k2LbT6efhRg==",
+      "hasInstallScript": true,
+      "license": "MIT",
+      "dependencies": {
+        "node-addon-api": "^8.3.0",
+        "node-gyp-build": "^4.8.4"
+      },
+      "engines": {
+        "node": ">= 18"
+      }
+    },
     "node_modules/binary-extensions": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.3.0.tgz",
@@ -135,6 +151,12 @@
         "node": ">=16.20.1"
       }
     },
+    "node_modules/buffer-equal-constant-time": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/buffer-equal-constant-time/-/buffer-equal-constant-time-1.0.1.tgz",
+      "integrity": "sha512-zRpUiDwd/xk6ADqPMATG8vc9VPrkck7T07OIx0gnjmJAnHnTVXNQG3vfvWNuiZIkwu9KrKdA1iJKfsfTVxE6NA==",
+      "license": "BSD-3-Clause"
+    },
     "node_modules/bytes": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
@@ -272,7 +294,6 @@
       "version": "16.5.0",
       "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.5.0.tgz",
       "integrity": "sha512-m/C+AwOAr9/W1UOIZUo232ejMNnJAJtYQjUbHoNTBNTJSvqzzDh7vnrei3o3r3m9blf6ZoDkvcw0VmozNRFJxg==",
-      "license": "BSD-2-Clause",
       "engines": {
         "node": ">=12"
       },
@@ -294,6 +315,15 @@
         "node": ">= 0.4"
       }
     },
+    "node_modules/ecdsa-sig-formatter": {
+      "version": "1.0.11",
+      "resolved": "https://registry.npmjs.org/ecdsa-sig-formatter/-/ecdsa-sig-formatter-1.0.11.tgz",
+      "integrity": "sha512-nagl3RYrbNv6kQkeJIpt6NJZy8twLB/2vtz6yN9Z4vRKHN4/QZJIEbqohALSgwKdnksuY3k5Addp5lg8sVoVcQ==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "safe-buffer": "^5.0.1"
+      }
+    },
     "node_modules/ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
@@ -358,7 +388,6 @@
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/express/-/express-5.1.0.tgz",
       "integrity": "sha512-DT9ck5YIRU+8GYzzU5kT3eHGA5iL+1Zd0EutOmTE9Dtk+Tvuzd23VBU+ec7HPNSTxXYO55gPV/hq4pSBJDjFpA==",
-      "license": "MIT",
       "dependencies": {
         "accepts": "^2.0.0",
         "body-parser": "^2.2.0",
@@ -657,6 +686,49 @@
       "integrity": "sha512-hvpoI6korhJMnej285dSg6nu1+e6uxs7zG3BYAm5byqDsgJNWwxzM6z6iZiAgQR4TJ30JmBTOwqZUw3WlyH3AQ==",
       "license": "MIT"
     },
+    "node_modules/jsonwebtoken": {
+      "version": "9.0.2",
+      "resolved": "https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-9.0.2.tgz",
+      "integrity": "sha512-PRp66vJ865SSqOlgqS8hujT5U4AOgMfhrwYIuIhfKaoSCZcirrmASQr8CX7cUg+RMih+hgznrjp99o+W4pJLHQ==",
+      "license": "MIT",
+      "dependencies": {
+        "jws": "^3.2.2",
+        "lodash.includes": "^4.3.0",
+        "lodash.isboolean": "^3.0.3",
+        "lodash.isinteger": "^4.0.4",
+        "lodash.isnumber": "^3.0.3",
+        "lodash.isplainobject": "^4.0.6",
+        "lodash.isstring": "^4.0.1",
+        "lodash.once": "^4.0.0",
+        "ms": "^2.1.1",
+        "semver": "^7.5.4"
+      },
+      "engines": {
+        "node": ">=12",
+        "npm": ">=6"
+      }
+    },
+    "node_modules/jwa": {
+      "version": "1.4.2",
+      "resolved": "https://registry.npmjs.org/jwa/-/jwa-1.4.2.tgz",
+      "integrity": "sha512-eeH5JO+21J78qMvTIDdBXidBd6nG2kZjg5Ohz/1fpa28Z4CcsWUzJ1ZZyFq/3z3N17aZy+ZuBoHljASbL1WfOw==",
+      "license": "MIT",
+      "dependencies": {
+        "buffer-equal-constant-time": "^1.0.1",
+        "ecdsa-sig-formatter": "1.0.11",
+        "safe-buffer": "^5.0.1"
+      }
+    },
+    "node_modules/jws": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/jws/-/jws-3.2.2.tgz",
+      "integrity": "sha512-YHlZCB6lMTllWDtSPHz/ZXTsi8S00usEV6v1tjq8tOUZzw7DpSDWVXjXDre6ed1w/pd495ODpHZYSdkRTsa0HA==",
+      "license": "MIT",
+      "dependencies": {
+        "jwa": "^1.4.1",
+        "safe-buffer": "^5.0.1"
+      }
+    },
     "node_modules/kareem": {
       "version": "2.6.3",
       "resolved": "https://registry.npmjs.org/kareem/-/kareem-2.6.3.tgz",
@@ -666,6 +738,48 @@
         "node": ">=12.0.0"
       }
     },
+    "node_modules/lodash.includes": {
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/lodash.includes/-/lodash.includes-4.3.0.tgz",
+      "integrity": "sha512-W3Bx6mdkRTGtlJISOvVD/lbqjTlPPUDTMnlXZFnVwi9NKJ6tiAk6LVdlhZMm17VZisqhKcgzpO5Wz91PCt5b0w==",
+      "license": "MIT"
+    },
+    "node_modules/lodash.isboolean": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/lodash.isboolean/-/lodash.isboolean-3.0.3.tgz",
+      "integrity": "sha512-Bz5mupy2SVbPHURB98VAcw+aHh4vRV5IPNhILUCsOzRmsTmSQ17jIuqopAentWoehktxGd9e/hbIXq980/1QJg==",
+      "license": "MIT"
+    },
+    "node_modules/lodash.isinteger": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/lodash.isinteger/-/lodash.isinteger-4.0.4.tgz",
+      "integrity": "sha512-DBwtEWN2caHQ9/imiNeEA5ys1JoRtRfY3d7V9wkqtbycnAmTvRRmbHKDV4a0EYc678/dia0jrte4tjYwVBaZUA==",
+      "license": "MIT"
+    },
+    "node_modules/lodash.isnumber": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/lodash.isnumber/-/lodash.isnumber-3.0.3.tgz",
+      "integrity": "sha512-QYqzpfwO3/CWf3XP+Z+tkQsfaLL/EnUlXWVkIk5FUPc4sBdTehEqZONuyRt2P67PXAk+NXmTBcc97zw9t1FQrw==",
+      "license": "MIT"
+    },
+    "node_modules/lodash.isplainobject": {
+      "version": "4.0.6",
+      "resolved": "https://registry.npmjs.org/lodash.isplainobject/-/lodash.isplainobject-4.0.6.tgz",
+      "integrity": "sha512-oSXzaWypCMHkPC3NvBEaPHf0KsA5mvPrOPgQWDsbg8n7orZ290M0BmC/jgRZ4vcJ6DTAhjrsSYgdsW/F+MFOBA==",
+      "license": "MIT"
+    },
+    "node_modules/lodash.isstring": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/lodash.isstring/-/lodash.isstring-4.0.1.tgz",
+      "integrity": "sha512-0wJxfxH1wgO3GrbuP+dTTk7op+6L41QCXbGINEmD+ny/G/eCqGzxyCsh7159S+mgDDcoarnBw6PC1PS5+wUGgw==",
+      "license": "MIT"
+    },
+    "node_modules/lodash.once": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/lodash.once/-/lodash.once-4.1.1.tgz",
+      "integrity": "sha512-Sb487aTOCr9drQVL8pIxOzVhafOjZN9UU54hiN8PU3uAiSV7lx1yYNpbNmex2PK6dSJoNTSJUUswT651yww3Mg==",
+      "license": "MIT"
+    },
     "node_modules/math-intrinsics": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/math-intrinsics/-/math-intrinsics-1.1.0.tgz",
@@ -739,7 +853,6 @@
       "version": "6.16.0",
       "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-6.16.0.tgz",
       "integrity": "sha512-D1PNcdT0y4Grhou5Zi/qgipZOYeWrhLEpk33n3nm6LGtz61jvO88WlrWCK/bigMjpnOdAUKKQwsGIl0NtWMyYw==",
-      "license": "Apache-2.0",
       "dependencies": {
         "@mongodb-js/saslprep": "^1.1.9",
         "bson": "^6.10.3",
@@ -795,7 +908,6 @@
       "version": "8.15.1",
       "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-8.15.1.tgz",
       "integrity": "sha512-RhQ4DzmBi5BNGcS0w4u1vdMRIKcteXTCNzDt1j7XRcdWYBz1MjMjulBhPaeC5jBCHOD1yinuOFTTSOWLLGexWw==",
-      "license": "MIT",
       "dependencies": {
         "bson": "^6.10.3",
         "kareem": "2.6.3",
@@ -849,6 +961,26 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/node-addon-api": {
+      "version": "8.3.1",
+      "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-8.3.1.tgz",
+      "integrity": "sha512-lytcDEdxKjGJPTLEfW4mYMigRezMlyJY8W4wxJK8zE533Jlb8L8dRuObJFWg2P+AuOIxoCgKF+2Oq4d4Zd0OUA==",
+      "license": "MIT",
+      "engines": {
+        "node": "^18 || ^20 || >= 21"
+      }
+    },
+    "node_modules/node-gyp-build": {
+      "version": "4.8.4",
+      "resolved": "https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-4.8.4.tgz",
+      "integrity": "sha512-LA4ZjwlnUblHVgq0oBF3Jl/6h/Nvs5fzBLwdEF4nuxnFdsfajde4WfxtJr3CaiH+F6ewcIB/q4jQ4UzPyid+CQ==",
+      "license": "MIT",
+      "bin": {
+        "node-gyp-build": "bin.js",
+        "node-gyp-build-optional": "optional.js",
+        "node-gyp-build-test": "build-test.js"
+      }
+    },
     "node_modules/nodemon": {
       "version": "3.1.10",
       "resolved": "https://registry.npmjs.org/nodemon/-/nodemon-3.1.10.tgz",

package.json

@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "main": "app.js",
   "scripts": {
-    "start":"nodemon app.js",
+    "start": "nodemon app.js",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "keywords": [],
@@ -11,10 +11,14 @@
   "license": "ISC",
   "description": "",
   "dependencies": {
+    "bcrypt": "^6.0.0",
     "dotenv": "^16.5.0",
     "express": "^5.1.0",
+    "jsonwebtoken": "^9.0.2",
     "mongodb": "^6.16.0",
     "mongoose": "^8.15.1",
     "nodemon": "^3.1.10"
   }
+ 
+
 }

routes/authRoutes.js

@@ -0,0 +1,21 @@
+const express = require("express");
+const {
+  registerUser,
+  loginUser,
+  getProfile,
+} = require("../controllers/authController");
+const authToken = require("../middleware/authMiddleware");
+
+const router = express.Router();
+
+// Register user
+router.post("/register",registerUser );
+
+// Login user
+router.post("/login", loginUser);
+
+//protectRoute
+router.get("/profile", authToken, getProfile);
+
+
+module.exports = router;

routes/userRoutes.js

@@ -6,4 +6,6 @@ router.post("/", createUser);
 router.get('/',getUsers);
 router.get('/:id',getUserById);
 router.put('/:id',updateUser);
-router.delete(':/id',deleteUser)
+router.delete('/:id',deleteUser)
+
+module.exports = router;