V 1.0.0 (front/backend) Erste lauffähige Version

.gitignore

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+# Dependencies
+node_modules/
+package-lock.json
+
+# Environment variables
+.env
+.env.local
+.env.*.local
+
+# Build output
+dist/
+build/
+
+# Logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# Testing
+coverage/
+
+# Misc
+.cache/

backend/docker-compose.yml

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+
+services:
+  mongodb:
+    image: mongo:latest
+    container_name: mongodb
+    restart: unless-stopped
+    ports:
+      - "27017:27017"
+    environment:
+      MONGO_INITDB_ROOT_USERNAME: ${MONGO_ROOT_USER}
+      MONGO_INITDB_ROOT_PASSWORD: ${MONGO_ROOT_PASSWD}
+    volumes:
+      - mongodb_data:/data/db
+      - mongodb_config:/data/configdb
+
+volumes:
+  mongodb_data:
+  mongodb_config:

backend/package.json

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+{
+  "name": "backend",
+  "type": "module",
+  "version": "1.0.0",
+  "vdate": "2025-11-23 11:00 UTC",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "start": "node src/server.js",
+    "dev": "nodemon src/server.js" 
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "cors": "^2.8.5",
+    "dotenv": "^17.2.3",
+    "express": "^5.1.0",
+    "mongodb": "^7.0.0"
+  },
+  "devDependencies": {
+    "nodemon": "^3.1.11"
+  }
+}

backend/src/db/db.js

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+// src/db/db.js
+import 'dotenv/config'; // Importiert und lädt Umgebungsvariablen
+import { MongoClient } from 'mongodb';
+
+// MongoDB Verbindungs-URI aus der .env-Datei
+const uri = process.env.MONGO_URI;
+
+let db; 
+
+/**
+ * Stellt die Verbindung zur MongoDB her.
+ * @returns {db} Die verbundene Datenbankinstanz.
+ */
+export async function connectToDb() {
+  try {
+    const client = new MongoClient(uri, { 
+    });
+    
+    await client.connect();
+    
+    // Die Datenbankinstanz speichern
+    db = client.db(); 
+    
+    console.log(`✅ Erfolgreich mit MongoDB verbunden.`);
+    
+    return db;
+    
+  } catch (error) {
+    console.error("❌ Fehler bei der Verbindung zur MongoDB:", error);
+    process.exit(1); 
+  }
+}
+
+/**
+ * Gibt die gespeicherte Datenbankinstanz zurück.
+ * @returns {db} Die Datenbankinstanz.
+ */
+export function getDb() {
+  return db;
+}

backend/src/server.js

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+// src/server.js
+import 'dotenv/config'; 
+import express from 'express';
+import cors from 'cors';
+import { connectToDb, getDb } from './db/db.js'; 
+import { ObjectId } from 'mongodb'; // Wichtig für die Arbeit mit MongoDB IDs
+
+// Initialisiert Express
+const app = express();
+const PORT = process.env.PORT || 3001;
+
+// Middleware konfigurieren - CORS muss vor allen Routen kommen
+app.use((req, res, next) => {
+    console.log(`📥 ${req.method} ${req.path} from ${req.get('origin') || 'unknown origin'}`);
+    res.header('Access-Control-Allow-Origin', 'http://localhost:5173');
+    res.header('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
+    res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept');
+    res.header('Access-Control-Allow-Credentials', 'true');
+    
+    // Handle preflight requests
+    if (req.method === 'OPTIONS') {
+        console.log('✅ Preflight request handled');
+        return res.sendStatus(200);
+    }
+    next();
+});
+app.use(express.json());         
+
+// -----------------------------------------------------
+// API ROUTEN
+// -----------------------------------------------------
+
+// 1. READ: Alle Termine abrufen (GET /api/appointments)
+app.get('/api/appointments', async (req, res) => {
+    try {
+        const db = getDb();
+        // Finde alle Dokumente in der Collection 'appointments'
+        const appointments = await db.collection('appointments')
+            .find({})
+            // Optional: Nach Termindatum sortieren (aufsteigend)
+            .sort({ termin: 1 }) 
+            .toArray();
+        
+        // Sende die Daten zurück an das Frontend
+        res.json(appointments);
+
+    } catch (error) {
+        console.error("Fehler beim Abrufen der Termine:", error);
+        res.status(500).json({ message: "Interner Serverfehler beim Abrufen der Daten." });
+    }
+});
+
+// 2. CREATE: Neuen Termin erstellen (POST /api/appointments)
+app.post('/api/appointments', async (req, res) => {
+    try {
+        const db = getDb();
+        const appointmentData = req.body; // Die Daten kommen vom React-Formular
+
+        // Validiere, dass der Termin ein gültiges Datum hat (Optional, aber gut)
+        if (!appointmentData.arztName || !appointmentData.termin) {
+            return res.status(400).json({ message: "Arztname und Termin sind erforderlich." });
+        }
+        
+        // Mongo generiert die _id automatisch.
+        const result = await db.collection('appointments').insertOne(appointmentData);
+
+        // Der eingefügte Termin, inklusive der von Mongo erstellten _id
+        const newAppointment = { _id: result.insertedId, ...appointmentData };
+
+        // Sende den neu erstellten Termin zurück an das Frontend (Status 201 Created)
+        res.status(201).json(newAppointment);
+
+    } catch (error) {
+        console.error("Fehler beim Erstellen des Termins:", error);
+        res.status(500).json({ message: "Interner Serverfehler beim Speichern der Daten." });
+    }
+});
+
+// 3. UPDATE: Termin aktualisieren (PUT /api/appointments/:id)
+app.put('/api/appointments/:id', async (req, res) => {
+    try {
+        const db = getDb();
+        const { id } = req.params;
+        const updatedFields = req.body; // Enthält alle Felder (oder nur die geänderten)
+
+        // Die _id des Dokuments muss ein gültiges ObjectId-Objekt sein
+        const filter = { _id: new ObjectId(id) };
+        
+        // Entferne das _id Feld aus den aktualisierten Daten, um Fehler zu vermeiden
+        delete updatedFields._id; 
+        
+        // Führe die Aktualisierung durch
+        const result = await db.collection('appointments').updateOne(
+            filter,
+            { $set: updatedFields }
+        );
+
+        if (result.matchedCount === 0) {
+            return res.status(404).json({ message: "Termin nicht gefunden." });
+        }
+        
+        // Hole das aktualisierte Dokument, um es zurückzusenden (optional, aber nützlich)
+        const updatedAppointment = await db.collection('appointments').findOne(filter);
+
+        res.json(updatedAppointment);
+
+    } catch (error) {
+        console.error(`Fehler beim Aktualisieren des Termins ${req.params.id}:`, error);
+        // Gib einen 400 Bad Request zurück, falls die ID ungültig ist (z.B. falsches Format)
+        res.status(400).json({ message: "Ungültige ID oder Serverfehler." });
+    }
+});
+
+// 4. DELETE: Termin löschen (DELETE /api/appointments/:id)
+app.delete('/api/appointments/:id', async (req, res) => {
+    try {
+        const db = getDb();
+        const { id } = req.params;
+
+        const filter = { _id: new ObjectId(id) };
+
+        const result = await db.collection('appointments').deleteOne(filter);
+
+        if (result.deletedCount === 0) {
+            return res.status(404).json({ message: "Termin nicht gefunden." });
+        }
+        
+        // Sende Status 204 (No Content), um den erfolgreichen Löschvorgang zu signalisieren
+        res.status(204).send(); 
+
+    } catch (error) {
+        console.error(`Fehler beim Löschen des Termins ${req.params.id}:`, error);
+        res.status(400).json({ message: "Ungültige ID oder Serverfehler." });
+    }
+});
+
+
+// -----------------------------------------------------
+// Server Start Logik
+// -----------------------------------------------------
+async function startServer() {
+    try {
+        await connectToDb(); 
+        
+        app.listen(PORT, () => {
+            console.log(`🚀 Server läuft auf Port ${PORT}`);
+        });
+        
+    } catch (error) {
+        console.error("Fehler beim Starten des Servers:", error);
+    }
+}
+
+startServer();

frontend/README.md

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+# React + Vite
+
+This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
+
+Currently, two official plugins are available:
+
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Babel](https://babeljs.io/) (or [oxc](https://oxc.rs) when used in [rolldown-vite](https://vite.dev/guide/rolldown)) for Fast Refresh
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
+
+## React Compiler
+
+The React Compiler is not enabled on this template because of its impact on dev & build performances. To add it, see [this documentation](https://react.dev/learn/react-compiler/installation).
+
+## Expanding the ESLint configuration
+
+If you are developing a production application, we recommend using TypeScript with type-aware lint rules enabled. Check out the [TS template](https://github.com/vitejs/vite/tree/main/packages/create-vite/template-react-ts) for information on how to integrate TypeScript and [`typescript-eslint`](https://typescript-eslint.io) in your project.

frontend/eslint.config.js

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+import js from '@eslint/js'
+import globals from 'globals'
+import reactHooks from 'eslint-plugin-react-hooks'
+import reactRefresh from 'eslint-plugin-react-refresh'
+import { defineConfig, globalIgnores } from 'eslint/config'
+
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{js,jsx}'],
+    extends: [
+      js.configs.recommended,
+      reactHooks.configs.flat.recommended,
+      reactRefresh.configs.vite,
+    ],
+    languageOptions: {
+      ecmaVersion: 2020,
+      globals: globals.browser,
+      parserOptions: {
+        ecmaVersion: 'latest',
+        ecmaFeatures: { jsx: true },
+        sourceType: 'module',
+      },
+    },
+    rules: {
+      'no-unused-vars': ['error', { varsIgnorePattern: '^[A-Z_]' }],
+    },
+  },
+])

frontend/index.html

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+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>aerzte</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.jsx"></script>
+  </body>
+</html>

frontend/package.json

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+{
+  "name": "aerzte",
+  "type": "module", 
+  "private": true,
+  "version": "0.0.0",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "lint": "eslint .",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^19.2.0",
+    "react-dom": "^19.2.0"
+  },
+  "devDependencies": {
+    "@eslint/js": "^9.39.1",
+    "@types/react": "^19.2.5",
+    "@types/react-dom": "^19.2.3",
+    "@vitejs/plugin-react": "^5.1.1",
+    "eslint": "^9.39.1",
+    "eslint-plugin-react-hooks": "^7.0.1",
+    "eslint-plugin-react-refresh": "^0.4.24",
+    "globals": "^16.5.0",
+    "vite": "^7.2.4"
+  }
+}

frontend/public/vite.svg

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+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>

frontend/src/App.css_org

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+#root {
+  max-width: 1280px;
+  margin: 0 auto;
+  padding: 2rem;
+  text-align: center;
+}
+
+.logo {
+  height: 6em;
+  padding: 1.5em;
+  will-change: filter;
+  transition: filter 300ms;
+}
+.logo:hover {
+  filter: drop-shadow(0 0 2em #646cffaa);
+}
+.logo.react:hover {
+  filter: drop-shadow(0 0 2em #61dafbaa);
+}
+
+@keyframes logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  a:nth-of-type(2) .logo {
+    animation: logo-spin infinite 20s linear;
+  }
+}
+
+.card {
+  padding: 2em;
+}
+
+.read-the-docs {
+  color: #888;
+}

frontend/src/App.jsx

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+import React, { useState, useEffect } from 'react';
+import AppointmentForm from './components/AppointmentForm';
+import AppointmentList from './components/AppointmentList';
+import './AppStyles.css';
+
+// Die Basis-URL der Express-API
+const API_URL = 'http://localhost:3001/api/appointments';
+
+// Funktion zur Umwandlung von MongoDBs _id in die interne id des Frontends
+const normalizeAppointment = (appointment) => ({
+    // Wichtig: _id von Mongo in id umbenennen
+    id: appointment._id, 
+    arztName: appointment.arztName,
+    arztArt: appointment.arztArt,
+    // Termine kommen als String vom Backend, muss in Date-Objekt umgewandelt werden
+    termin: new Date(appointment.termin),
+    erledigt: appointment.erledigt,
+    bemerkungen: appointment.bemerkungen,
+});
+
+function App() {
+  const [appointments, setAppointments] = useState([]);
+  const [editingAppointment, setEditingAppointment] = useState(null); 
+
+  // NEU: Lädt Termine vom Backend beim Start
+  useEffect(() => {
+    fetchAppointments();
+  }, []); // [] sorgt dafür, dass es nur einmal beim Mounten ausgeführt wird
+
+  const fetchAppointments = async () => {
+    try {
+      const response = await fetch(API_URL);
+      if (!response.ok) throw new Error('Netzwerkantwort war nicht ok.');
+      
+      const data = await response.json();
+      
+      // Daten aus dem Backend aufbereiten (konvertiere _id und termin)
+      const normalizedData = data.map(normalizeAppointment); 
+      setAppointments(normalizedData);
+      
+    } catch (error) {
+      console.error("Fehler beim Laden der Termine:", error);
+      // Optional: Fehlermeldung anzeigen
+    }
+  };
+
+  // 1. CREATE: Neuen Termin erstellen
+  const addAppointment = async (newApp) => {
+    // Vor dem Senden die temporäre ID und das Date-Objekt entfernen/umwandeln
+    const appToSend = {
+      ...newApp,
+      // Date-Objekt in ISO-String umwandeln (von Mongo erwartet)
+      termin: newApp.termin.toISOString(), 
+      id: undefined // Lokale ID entfernen
+    };
+    
+    try {
+        const response = await fetch(API_URL, {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify(appToSend),
+        });
+
+        if (!response.ok) throw new Error('Fehler beim Hinzufügen des Termins.');
+
+        const addedApp = await response.json();
+        
+        // Fügt den normalisierten Termin (mit Mongo _id) zum State hinzu
+        setAppointments(prev => [...prev, normalizeAppointment(addedApp)]);
+        setEditingAppointment(null);
+        
+    } catch (error) {
+        console.error("Fehler beim Speichern des Termins:", error);
+    }
+  };
+
+
+  // 2. UPDATE: Bestehenden Termin aktualisieren (vom Formular)
+  const updateAppointment = async (updatedApp) => {
+    const mongoId = updatedApp.id; // Die ID ist jetzt die MongoDB _id
+
+    const appToSend = {
+        ...updatedApp,
+        termin: updatedApp.termin.toISOString(),
+        id: undefined, // Lokale ID entfernen
+    };
+    
+    try {
+        const response = await fetch(`${API_URL}/${mongoId}`, {
+            method: 'PUT',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify(appToSend),
+        });
+
+        if (!response.ok) throw new Error('Fehler beim Aktualisieren des Termins.');
+
+        // Nach erfolgreichem Update den State lokal aktualisieren
+        setAppointments(prev =>
+            prev.map(app => 
+                app.id === mongoId ? normalizeAppointment(updatedApp) : app
+            )
+        );
+        setEditingAppointment(null);
+        
+    } catch (error) {
+        console.error("Fehler beim Aktualisieren des Termins:", error);
+    }
+  };
+  
+  // 3. UPDATE: Statuswechsel (Toggle Done)
+  const toggleDone = async (id) => {
+    const currentApp = appointments.find(app => app.id === id);
+    if (!currentApp) return;
+
+    const newStatus = !currentApp.erledigt;
+    
+    try {
+      // Nur das erledigt-Feld senden
+      const response = await fetch(`${API_URL}/${id}`, {
+          method: 'PUT',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ erledigt: newStatus }),
+      });
+
+      if (!response.ok) throw new Error('Fehler beim Statuswechsel.');
+      
+      // Lokalen State synchronisieren, wenn Backend erfolgreich war
+      setAppointments(prev =>
+          prev.map(app => 
+              app.id === id ? { ...app, erledigt: newStatus } : app
+          )
+      );
+
+    } catch (error) {
+      console.error("Fehler beim Statuswechsel:", error);
+    }
+  };
+  
+  // ... (startEdit und cancelEdit bleiben unverändert, sie manipulieren nur den lokalen State)
+
+  return (
+    <div className="app-container">
+      {/* ... (Header und Formular-Einbindung) ... */}
+      <AppointmentForm 
+        onAddAppointment={addAppointment} 
+        editingAppointment={editingAppointment}
+        onUpdateAppointment={updateAppointment}
+        onCancelEdit={() => setEditingAppointment(null)}
+      />
+      {/* ... */}
+      <AppointmentList 
+        appointments={appointments} 
+        onToggleDone={toggleDone} 
+        onEdit={(app) => setEditingAppointment(app)}
+      />
+      {/* Debug Output kann nun entfernt werden */}
+    </div>
+  );
+}
+
+export default App;

frontend/src/AppStyles.css

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+/* Globale Styles für App.js */
+body {
+    margin: 0;
+    background-color: #f9f9f9;
+    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
+    color: #333;
+    /* NEU: Flexbox für die Zentrierung */
+    display: flex; 
+    justify-content: center; /* Zentriert horizontal */
+    align-items: flex-start; /* Hält den Inhalt oben, falls er kürzer als der Bildschirm ist */
+    min-height: 100vh; /* Stellt sicher, dass die Seite mindestens die volle Höhe des Viewports hat */
+}
+
+.app-container {
+    /* Die maximale Breite beibehalten, aber Padding anpassen */
+    padding: 40px 20px;
+    max-width: 900px;
+    width: 100%; /* Wichtig, damit max-width funktioniert */
+    /* min-height-Einstellung ist nun im Body */
+}
+
+.app-header {
+    text-align: center;
+    margin-bottom: 40px;
+    border-bottom: 2px solid #007bff;
+    padding-bottom: 10px;
+}
+
+.app-header h1 {
+    color: #007bff;
+    margin-top: 0;
+}
+
+.separator {
+    border: 0;
+    border-top: 1px solid #ddd;
+    margin: 40px 0;
+}
+
+.debug-output {
+    background-color: #fff;
+    padding: 15px;
+    border-radius: 8px;
+    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
+}
+
+.debug-output pre {
+    font-size: 12px;
+    white-space: pre-wrap;
+    word-break: break-all;
+}
+
+/* Styles für AppointmentForm.jsx */
+.form-container {
+    background-color: #fff;
+    padding: 30px;
+    border-radius: 10px;
+    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
+}
+
+.form-container h3 {
+    border-bottom: 2px solid #f0f0f0;
+    padding-bottom: 10px;
+    margin-bottom: 20px;
+    color: #333;
+}
+
+.input-group {
+    margin-bottom: 15px;
+}
+
+.input-group label {
+    display: block;
+    margin-bottom: 5px;
+    font-weight: bold;
+    color: #555;
+}
+
+.input-group input,
+.input-group textarea {
+    width: 100%;
+    padding: 10px;
+    border-radius: 5px;
+    border: 1px solid #ccc;
+    box-sizing: border-box; /* Stellt sicher, dass Padding und Border zur Gesamtbreite gehören */
+}
+
+.input-group textarea {
+    resize: vertical;
+}
+
+.date-time-control {
+    display: flex;
+    gap: 15px;
+}
+
+.date-time-control > div {
+    flex: 1;
+}
+
+.submit-button {
+    background-color: #28a745;
+    color: white;
+    padding: 12px 20px;
+    border: none;
+    border-radius: 5px;
+    cursor: pointer;
+    font-size: 16px;
+    margin-top: 20px;
+    transition: background-color 0.3s;
+}
+
+.submit-button:hover {
+    background-color: #218838;
+}
+
+/* Styles für AppointmentList und AppointmentItem */
+.appointment-list {
+    list-style: none;
+    padding: 0;
+}
+
+.appointment-item {
+    background-color: #fff;
+    padding: 15px;
+    margin-bottom: 10px;
+    border-radius: 8px;
+    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
+    border-left: 5px solid #007bff; /* Offene Termine */
+    transition: all 0.3s;
+}
+
+.appointment-item.done {
+    opacity: 0.6;
+    border-left: 5px solid #28a745; /* Erledigte Termine */
+    background-color: #e9f5ee;
+}
+
+.appointment-header {
+    display: flex;
+    align-items: center;
+    margin-bottom: 10px;
+}
+
+.appointment-header input[type="checkbox"] {
+    width: 20px;
+    height: 20px;
+    margin-right: 15px;
+    cursor: pointer;
+}
+
+.doctor-info {
+    font-size: 1.1em;
+    color: #007bff;
+    font-weight: 600;
+}
+
+.appointment-item.done .doctor-info,
+.appointment-item.done .appointment-date,
+.appointment-item.done .appointment-notes {
+    text-decoration: line-through;
+}
+
+.arzt-art {
+    font-weight: normal;
+    font-size: 0.9em;
+    color: #6c757d;
+    margin-left: 5px;
+}
+
+.appointment-date {
+    margin: 5px 0;
+    margin-left: 35px; /* Alignment mit der Checkbox */
+    font-size: 0.9em;
+    color: #495057;
+}
+
+.appointment-notes {
+    margin: 5px 0 0 35px;
+    padding-top: 5px;
+    border-top: 1px dashed #eee;
+    font-size: 0.85em;
+    color: #6c757d;
+}
+
+.no-appointments-message {
+    text-align: center;
+    padding: 20px;
+    background-color: #fffae6;
+    border: 1px solid #ffeeba;
+    border-radius: 5px;
+    color: #856404;
+}
+
+.cancel-button {
+    background-color: #dc3545;
+    color: white;
+    padding: 12px 20px;
+    border: none;
+    border-radius: 5px;
+    cursor: pointer;
+    font-size: 16px;
+    margin-top: 20px;
+    margin-left: 10px;
+    transition: background-color 0.3s;
+}
+
+.cancel-button:hover {
+    background-color: #c82333;
+}

frontend/src/assets/react.svg

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frontend/src/components/AppointmentForm.jsx

@@ -0,0 +1,158 @@
+import React, { useState, useEffect } from 'react';
+
+// Hilfsfunktion: Format-Konvertierung vom Date-Objekt zurück ins Formular-Format
+const formatTimeToInput = (date) => date.toTimeString().slice(0, 5); // HH:MM
+const formatDateToInput = (date) => date.toISOString().split('T')[0]; // YYYY-MM-DD
+
+const AppointmentForm = ({ onAddAppointment, editingAppointment, onUpdateAppointment, onCancelEdit }) => {
+  
+  const initialFormData = {
+    arztName: '',
+    arztArt: '',
+    terminDatum: '',
+    terminUhrzeit: '',
+    bemerkungen: '',
+  };
+  const [formData, setFormData] = useState(initialFormData);
+
+  // Füllt das Formular, wenn editingAppointment gesetzt wird
+  useEffect(() => {
+    if (editingAppointment) {
+      setFormData({
+        arztName: editingAppointment.arztName,
+        arztArt: editingAppointment.arztArt,
+        terminDatum: formatDateToInput(editingAppointment.termin),
+        terminUhrzeit: formatTimeToInput(editingAppointment.termin),
+        bemerkungen: editingAppointment.bemerkungen,
+      });
+    } else {
+      // Leert das Formular, wenn Bearbeitung abgeschlossen/abgebrochen
+      setFormData(initialFormData);
+    }
+  }, [editingAppointment]);
+  
+  const handleChange = (e) => {
+    const { name, value } = e.target;
+    setFormData(prevData => ({
+      ...prevData,
+      [name]: value
+    }));
+  };
+
+ const handleSubmit = (e) => {
+    e.preventDefault();
+
+    if (!formData.arztName || !formData.terminDatum || !formData.terminUhrzeit) {
+      alert("Bitte füllen Sie Name, Datum und Uhrzeit aus.");
+      return;
+    }
+
+    const baseAppointment = {
+      ...formData,
+      // Datum und Uhrzeit zusammenführen
+      termin: new Date(`${formData.terminDatum}T${formData.terminUhrzeit}`),
+      erledigt: editingAppointment ? editingAppointment.erledigt : false 
+    };
+
+    if (editingAppointment) {
+      // UPDATE: Füge die Mongo-ID hinzu und rufe die Update-Funktion auf
+      onUpdateAppointment({ 
+        ...baseAppointment,
+        id: editingAppointment.id 
+      });
+    } else {
+      // ADD: Ruft die Add-Funktion auf (keine temporäre ID mehr erforderlich)
+      onAddAppointment(baseAppointment); 
+    }
+};
+
+  return (
+    <form onSubmit={handleSubmit} className="form-container">
+      <h3 className="form-title">
+        {editingAppointment ? '✍️ Termin bearbeiten' : '🗓️ Neuen Termin hinzufügen'}
+      </h3>
+      
+      {/* Name des Arztes */}
+      <div className="input-group">
+        <label htmlFor="arztName">Name des Arztes:</label>
+        <input
+          type="text"
+          id="arztName"
+          name="arztName"
+          value={formData.arztName}
+          onChange={handleChange}
+          required
+        />
+      </div>
+
+      {/* Art des Arztes */}
+      <div className="input-group">
+        <label htmlFor="arztArt">Art des Arztes:</label>
+        <input
+          type="text"
+          id="arztArt"
+          name="arztArt"
+          value={formData.arztArt}
+          onChange={handleChange}
+          placeholder="z.B. Zahnarzt, Kardiologe"
+        />
+      </div>
+
+      {/* Datum und Uhrzeit */}
+      <div className="input-group">
+        <label>Termin:</label>
+        <div className="date-time-control">
+            <div>
+                <input
+                    type="date"
+                    id="terminDatum"
+                    name="terminDatum"
+                    value={formData.terminDatum}
+                    onChange={handleChange}
+                    required
+                />
+            </div>
+            <div>
+                <input
+                    type="time"
+                    id="terminUhrzeit"
+                    name="terminUhrzeit"
+                    value={formData.terminUhrzeit}
+                    onChange={handleChange}
+                    required
+                />
+            </div>
+        </div>
+      </div>
+      
+      {/* Bemerkungen */}
+      <div className="input-group">
+        <label htmlFor="bemerkungen">Bemerkungen:</label>
+        <textarea
+          id="bemerkungen"
+          name="bemerkungen"
+          value={formData.bemerkungen}
+          onChange={handleChange}
+          rows="3"
+        />
+      </div>
+
+      <button type="submit" className="submit-button">
+        {editingAppointment ? 'Änderungen speichern' : 'Termin speichern'}
+      </button>
+
+      {/* Abbrechen-Button nur im Bearbeitungsmodus anzeigen */}
+      {editingAppointment && (
+        <button 
+          type="button" 
+          onClick={onCancelEdit}
+          className="cancel-button"
+        >
+          Bearbeitung abbrechen
+        </button>
+      )}
+    </form>
+  );
+};
+
+export default AppointmentForm;

frontend/src/components/AppointmentItem.jsx

@@ -0,0 +1,46 @@
+import React from 'react';
+
+const formatDate = (date) => {
+  const options = { year: 'numeric', month: 'long', day: 'numeric', hour: '2-digit', minute: '2-digit' };
+  return date.toLocaleDateString('de-DE', options);
+};
+
+// NEUE PROP: onEdit
+const AppointmentItem = ({ appointment, onToggleDone, onEdit }) => {
+  const { id, arztName, arztArt, termin, erledigt, bemerkungen } = appointment;
+
+  const itemClass = erledigt ? 'appointment-item done' : 'appointment-item';
+
+  return (
+    // Klick auf das Item startet den Bearbeitungsmodus
+    <li className={itemClass} onClick={() => onEdit(appointment)}> 
+      <div className="appointment-header" 
+      onClick={(e) => e.stopPropagation()} >
+        <input 
+          type="checkbox" 
+          checked={erledigt} 
+          onChange={(e) => { 
+            e.stopPropagation(); // Verhindert, dass der Klick das Bearbeitungs-Event auslöst
+            onToggleDone(id); // Führt nur den Statuswechsel aus
+          }} 
+          id={`check-${id}`}
+        />
+        <label htmlFor={`check-${id}`} className="doctor-info">
+          <strong>{arztName}</strong> {arztArt && <span className="arzt-art">({arztArt})</span>}
+        </label>
+      </div>
+
+      <p className="appointment-date">
+        <strong>Termin:</strong> {formatDate(termin)}
+      </p>
+
+      {bemerkungen && (
+        <p className="appointment-notes">
+          <strong>Bemerkungen:</strong> {bemerkungen}
+        </p>
+      )}
+    </li>
+  );
+};
+
+export default AppointmentItem;

frontend/src/components/AppointmentList.jsx

@@ -0,0 +1,28 @@
+import React from 'react';
+import AppointmentItem from './AppointmentItem';
+
+// NEUE PROP: onEdit
+const AppointmentList = ({ appointments, onToggleDone, onEdit }) => {
+  
+  if (appointments.length === 0) {
+    return <p className="no-appointments-message">Keine Termine vorhanden. Fügen Sie oben einen neuen Termin hinzu!</p>;
+  }
+
+  return (
+    <ul className="appointment-list">
+      {appointments
+        // Termine nach Datum sortieren
+        .sort((a, b) => a.termin - b.termin)
+        .map(appointment => (
+          <AppointmentItem 
+            key={appointment.id} 
+            appointment={appointment} 
+            onToggleDone={onToggleDone} 
+            onEdit={onEdit} // Funktion an das Item weitergeben
+          />
+        ))}
+    </ul>
+  );
+};
+
+export default AppointmentList;

frontend/src/index.css

@@ -0,0 +1,68 @@
+:root {
+  font-family: system-ui, Avenir, Helvetica, Arial, sans-serif;
+  line-height: 1.5;
+  font-weight: 400;
+
+  color-scheme: light dark;
+  color: rgba(255, 255, 255, 0.87);
+  background-color: #242424;
+
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+a {
+  font-weight: 500;
+  color: #646cff;
+  text-decoration: inherit;
+}
+a:hover {
+  color: #535bf2;
+}
+
+body {
+  margin: 0;
+  display: flex;
+  place-items: center;
+  min-width: 320px;
+  min-height: 100vh;
+}
+
+h1 {
+  font-size: 3.2em;
+  line-height: 1.1;
+}
+
+button {
+  border-radius: 8px;
+  border: 1px solid transparent;
+  padding: 0.6em 1.2em;
+  font-size: 1em;
+  font-weight: 500;
+  font-family: inherit;
+  background-color: #1a1a1a;
+  cursor: pointer;
+  transition: border-color 0.25s;
+}
+button:hover {
+  border-color: #646cff;
+}
+button:focus,
+button:focus-visible {
+  outline: 4px auto -webkit-focus-ring-color;
+}
+
+@media (prefers-color-scheme: light) {
+  :root {
+    color: #213547;
+    background-color: #ffffff;
+  }
+  a:hover {
+    color: #747bff;
+  }
+  button {
+    background-color: #f9f9f9;
+  }
+}

frontend/src/main.jsx

@@ -0,0 +1,10 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import './index.css'
+import App from './App.jsx'
+
+createRoot(document.getElementById('root')).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+)

frontend/vite.config.js

@@ -0,0 +1,7 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [react()],
+})