Merge branch 'master'

Merging changes from the master branch into the main branch

Incorporating updates and new features from the master branch into the main branch to unify the project history.

.gitignore

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+# Ignore node_modules directory
+node_modules/
+
+# Ignore .env files containing sensitive information
+.env
+
+# Ignore npm's debug log file
+npm-debug.log*
+
+# Ignore yarn's debug log file
+yarn-debug.log*
+
+# Ignore yarn error log file
+yarn-error.log*
+
+# Ignore IDE and editor-specific files
+.vscode/
+.idea/
+*.sublime-workspace
+*.sublime-project
+.DS_Store
+
+# Ignore compiled binary files
+*.pyc
+*.class
+*.jar
+
+# Ignore dependencies installed via pip
+pip-wheel-metadata/

backend/config.js

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+const JWT_SECRET = "someSecret";
+module.exports = JWT_SECRET;

backend/db.js

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+const mongoose = require("mongoose");
+const { string } = require("zod");
+
+mongoose.connect("Your_Connection_String");
+
+const userSchema = new mongoose.Schema({
+	username: {
+		type: String,
+		required: true,
+		unique: true,
+		trim: true,
+		lowercase: true,
+		minLength: 3,
+		maxLength: 30,
+	},
+	password: {
+		type: String,
+		required: true,
+		minLength: 6,
+	},
+	firstName: {
+		type: String,
+		required: true,
+		trim: true,
+		maxLength: 50,
+	},
+	lastName: {
+		type: String,
+		required: true,
+		trim: true,
+		maxLength: 50,
+	},
+});
+
+const User = mongoose.model("User", userSchema);
+
+const accountSchema = new mongoose.Schema({
+	userId: {
+		type: mongoose.Schema.Types.ObjectId,
+		ref: "User",
+		required: true,
+	},
+	balance: {
+		type: Number,
+		required: true,
+	},
+});
+
+const Account = mongoose.model("Account", accountSchema);
+
+module.exports = {
+	User,
+	Account,
+};

backend/index.js

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+const express = require("express");
+const rootRouter = require("./routes/index");
+const app = express();
+const cors = require("cors");
+app.use(express.json());
+app.use(cors());
+app.use("/api/v1", rootRouter);
+app.listen(3000, () => {
+	console.log("Listening on Port 3000");
+});

backend/middleware.js

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+const jwt = require("jsonwebtoken");
+const JWT_SECRET = require("./config");
+const authMiddleware = (req, res, next) => {
+	const authHeader = req.headers.authorization;
+	if (!authHeader || !authHeader.startsWith("Bearer ")) {
+		return res.status(403).json({
+			message: "Authorization Token Error",
+		});
+	} else {
+		const token = authHeader.split(" ")[1];
+		try {
+			const userId = jwt.verify(token, JWT_SECRET).userId;
+			req.userId = userId;
+		} catch (error) {
+			res.status(403).json({
+				message: "Unauthorized User",
+			});
+		}
+	}
+	next();
+};
+module.exports = { authMiddleware };