first commit

.gitignore

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+.env
+.DS_STORE
+.DS_Store
+server/node_modules/*
+app/node_modules/*
+package-lock.json
+package.json

server/.env_default

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+PORT=3000
+DB_HOST=localhost
+DB_USER=postgres
+DB_PASSWORD=your_db_password
+DB_NAME=your_database_name
+JWT_SECRET=your_jwt_secret

server/app.js

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+require("dotenv").config();
+const express = require("express");
+const app = express();
+const authRoutes = require("./routes/auth");
+const bodyParser = require("body-parser");
+
+// Middleware
+app.use(bodyParser.json());
+
+// Routes
+app.use("/auth", authRoutes);
+
+// Server starten
+const PORT = process.env.PORT || 3000;
+app.listen(PORT, () => {
+  console.log(`Server läuft auf Port ${PORT}`);
+});

server/controllers/userController.js

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+const bcrypt = require("bcryptjs");
+const jwt = require("jsonwebtoken");
+const { Pool } = require("pg");
+
+// Datenbankverbindung
+const pool = new Pool({
+  user: process.env.DB_USER,
+  host: process.env.DB_HOST,
+  database: process.env.DB_NAME,
+  password: process.env.DB_PASSWORD,
+  port: 5432,
+});
+
+// Registrierungsfunktion
+const registerUser = async (req, res) => {
+  const { username, password, email, role } = req.body;
+
+  try {
+    // Überprüfen, ob der Benutzer bereits existiert
+    const userExists = await pool.query(
+      "SELECT * FROM Users WHERE email = $1",
+      [email]
+    );
+    if (userExists.rows.length > 0) {
+      return res.status(400).json({ message: "Benutzer existiert bereits" });
+    }
+
+    // Passwort hashen
+    const hashedPassword = await bcrypt.hash(password, 10);
+
+    // Neuen Benutzer einfügen
+    const newUser = await pool.query(
+      "INSERT INTO Users (username, password, email, role, is_active) VALUES ($1, $2, $3, $4, $5) RETURNING *",
+      [username, hashedPassword, email, role, true]
+    );
+
+    res
+      .status(201)
+      .json({ message: "Benutzer registriert", user: newUser.rows[0] });
+  } catch (err) {
+    res
+      .status(500)
+      .json({ message: "Fehler beim Registrieren", error: err.message });
+  }
+};
+
+// Loginfunktion
+const loginUser = async (req, res) => {
+  const { email, password } = req.body;
+
+  try {
+    // Überprüfen, ob der Benutzer existiert
+    const user = await pool.query("SELECT * FROM Users WHERE email = $1", [
+      email,
+    ]);
+    if (user.rows.length === 0) {
+      return res.status(400).json({ message: "Benutzer nicht gefunden" });
+    }
+
+    // Passwort vergleichen
+    const validPassword = await bcrypt.compare(password, user.rows[0].password);
+    if (!validPassword) {
+      return res.status(400).json({ message: "Ungültiges Passwort" });
+    }
+
+    // JWT Token erstellen
+    const token = jwt.sign(
+      { id: user.rows[0].id, role: user.rows[0].role },
+      process.env.JWT_SECRET,
+      {
+        expiresIn: "1h",
+      }
+    );
+
+    res.status(200).json({ message: "Login erfolgreich", token });
+  } catch (err) {
+    res.status(500).json({ message: "Fehler beim Login", error: err.message });
+  }
+};
+
+module.exports = { registerUser, loginUser };

server/routes/auth.js

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+const express = require("express");
+const { loginUser, registerUser } = require("../controllers/userController");
+const router = express.Router();
+
+// Registrierungsroute
+router.post("/register", registerUser);
+
+// Loginroute
+router.post("/login", loginUser);
+
+module.exports = router;