Complete_Project

backend/.env

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+PORT=5000
+MONGO_URI=
+
+JWT_SECRET=Hello_World

backend/middleware/auth.js

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+import jwt from "jsonwebtoken";
+
+const auth = (req, res, next) => {
+  try {
+    const token = req.header("Authorization")?.replace("Bearer ", "");
+    if (!token) {
+      return res.status(401).json({ message: "No token, authorization denied" });
+    }
+
+    const decoded = jwt.verify(token, process.env.JWT_SECRET);
+    req.userId = decoded.userId;
+    next();
+  } catch (err) {
+    res.status(401).json({ message: "Token is not valid" });
+  }
+};
+
+export default auth;

backend/models/User.js

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+import mongoose from "mongoose";
+
+const sessionSchema = new mongoose.Schema({
+  title: { type: String, required: true },
+  text: { type: String, required: true },
+  keystrokes: { type: Number, default: 0 },
+  pauses: { type: Number, default: 0 },
+  pastes: { type: Number, default: 0 },
+  createdAt: { type: Date, default: Date.now },
+});
+
+const userSchema = new mongoose.Schema({
+  email: { type: String, required: true, unique: true },
+  password: { type: String, required: true },
+  sessions: [sessionSchema],
+});
+
+export default mongoose.model("User", userSchema);