Refactor database initialization: streamline the process by removing the old init_database function, implementing a new structure for database setup, and ensuring the creation of a comprehensive mindmap hierarchy with an admin user. Update app.py to run on port 5000 instead of 6000.

Dockerfile

@@ -1,10 +1,27 @@
-FROM python:3.9-slim-buster
+FROM python:3.11-slim
 
 WORKDIR /app
 
-COPY requirements.txt requirements.txt
-RUN pip install -r requirements.txt
+# System dependencies
+RUN apt-get update && apt-get install -y \
+    gcc \
+    python3-dev \
+    libffi-dev \
+    && rm -rf /var/lib/apt/lists/*
 
-COPY website .
+# Clean up and install requirements
+RUN rm -rf /app/*
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt \
+    && pip install --no-cache-dir wheel setuptools
 
-CMD ["python", "app.py"]
+# Copy application files
+COPY website/ ./website/
+COPY requirements.txt .
+
+EXPOSE 6000
+
+# Verify installations
+RUN pip list
+
+CMD ["python", "website/app.py"]

docker-compose.yml

@@ -1,7 +1,16 @@
-version: "3.9"
+version: '3.8'
+
 services:
   web:
-    build: .
+    build:
+      context: .
+      dockerfile: Dockerfile
     ports:
-      - "5000:5000"
+      - "6000:6000"
+    volumes:
+      - ./website:/app/website
+    environment:
+      - FLASK_ENV=development
+      - FLASK_DEBUG=1
+    command: python website/app.py
     restart: always

requirements.txt

@@ -1,6 +1,6 @@
-flask
-flask-login
-flask-wtf
-email-validator
-python-dotenv
-flask-sqlalchemy
+Flask
+Flask-Login
+Flask-SQLAlchemy
+Werkzeug
+SQLAlchemy
+email_validator

start.sh

@@ -0,0 +1,72 @@
+#!/bin/bash
+
+# Farben für die Ausgabe
+GREEN='\033[0;32m'
+RED='\033[0;31m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+# Funktion zum Anzeigen des Hilfetexts
+show_help() {
+    echo -e "${YELLOW}Verwendung: ./start.sh [Option]${NC}"
+    echo "Optionen:"
+    echo "  start     - Startet die Container"
+    echo "  stop      - Stoppt die Container"
+    echo "  restart   - Neustart der Container"
+    echo "  rebuild   - Baut die Container neu"
+    echo "  clean     - Entfernt alle Container und Images"
+    echo "  logs      - Zeigt die Container-Logs"
+    echo "  help      - Zeigt diese Hilfe"
+}
+
+# Prüfen ob Docker läuft
+check_docker() {
+    if ! docker info > /dev/null 2>&1; then
+        echo -e "${RED}Error: Docker ist nicht gestartet${NC}"
+        exit 1
+    fi
+}
+
+case "$1" in
+    start)
+        check_docker
+        echo -e "${GREEN}Starte Container...${NC}"
+        docker-compose up -d
+        echo -e "${GREEN}Container erfolgreich gestartet!${NC}"
+        ;;
+    stop)
+        check_docker
+        echo -e "${YELLOW}Stoppe Container...${NC}"
+        docker-compose down
+        echo -e "${GREEN}Container erfolgreich gestoppt!${NC}"
+        ;;
+    restart)
+        check_docker
+        echo -e "${YELLOW}Neustart der Container...${NC}"
+        docker-compose down
+        docker-compose up -d
+        echo -e "${GREEN}Container erfolgreich neugestartet!${NC}"
+        ;;
+    rebuild)
+        check_docker
+        echo -e "${YELLOW}Baue Container neu...${NC}"
+        docker-compose down --rmi all
+        docker-compose build --no-cache
+        docker-compose up -d
+        echo -e "${GREEN}Container erfolgreich neu gebaut!${NC}"
+        ;;
+    clean)
+        check_docker
+        echo -e "${RED}Entferne alle Container und Images...${NC}"
+        docker-compose down --rmi all -v
+        echo -e "${GREEN}Aufräumen abgeschlossen!${NC}"
+        ;;
+    logs)
+        check_docker
+        echo -e "${YELLOW}Container-Logs:${NC}"
+        docker-compose logs -f
+        ;;
+    help|*)
+        show_help
+        ;;
+esac 

website/app.py

@@ -6,64 +6,36 @@ from flask_sqlalchemy import SQLAlchemy
 from werkzeug.security import generate_password_hash, check_password_hash
 import json
 
+db = SQLAlchemy()
+login_manager = LoginManager()
+login_manager.login_view = 'login'
+
+def create_app():
     app = Flask(__name__)
     app.config['SECRET_KEY'] = os.environ.get('SECRET_KEY', 'default-dev-key')
     app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///mindmap.db'
     app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
 
-db = SQLAlchemy(app)
-login_manager = LoginManager(app)
-login_manager.login_view = 'login'
+    db.init_app(app)
+    login_manager.init_app(app)
 
-# Database Models
-class User(UserMixin, db.Model):
-    id = db.Column(db.Integer, primary_key=True)
-    username = db.Column(db.String(80), unique=True, nullable=False)
-    email = db.Column(db.String(120), unique=True, nullable=False)
-    password_hash = db.Column(db.String(128))
-    is_admin = db.Column(db.Boolean, default=False)
-    thoughts = db.relationship('Thought', backref='author', lazy=True)
-    
-    def set_password(self, password):
-        self.password_hash = generate_password_hash(password)
-        
-    def check_password(self, password):
-        return check_password_hash(self.password_hash, password)
-
-class Thought(db.Model):
-    id = db.Column(db.Integer, primary_key=True)
-    content = db.Column(db.Text, nullable=False)
-    timestamp = db.Column(db.DateTime, default=datetime.utcnow)
-    branch = db.Column(db.String(100), nullable=False)
-    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
-    comments = db.relationship('Comment', backref='thought', lazy=True, cascade="all, delete-orphan")
-
-class Comment(db.Model):
-    id = db.Column(db.Integer, primary_key=True)
-    content = db.Column(db.Text, nullable=False)
-    timestamp = db.Column(db.DateTime, default=datetime.utcnow)
-    thought_id = db.Column(db.Integer, db.ForeignKey('thought.id'), nullable=False)
-    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
-    author = db.relationship('User', backref='comments')
-
-class MindMapNode(db.Model):
-    id = db.Column(db.Integer, primary_key=True)
-    name = db.Column(db.String(100), nullable=False)
-    parent_id = db.Column(db.Integer, db.ForeignKey('mind_map_node.id'), nullable=True)
-    children = db.relationship('MindMapNode', backref=db.backref('parent', remote_side=[id]))
-    thoughts = db.relationship('Thought', secondary='node_thought_association', backref='nodes')
-
-# Association table for many-to-many relationship between MindMapNode and Thought
-node_thought_association = db.Table('node_thought_association',
-    db.Column('node_id', db.Integer, db.ForeignKey('mind_map_node.id'), primary_key=True),
-    db.Column('thought_id', db.Integer, db.ForeignKey('thought.id'), primary_key=True)
-)
+    with app.app_context():
+        # Initialize database and create root node
+        db.create_all()
+        try:
+            root = MindMapNode.query.filter_by(parent_id=None).first()
+            if not root:
+                root = MindMapNode(name="Wissenschaft")
+                db.session.add(root)
+                db.session.commit()
+        except Exception as e:
+            print(f"Error initializing database: {str(e)}")
 
+    # Register all routes with the app
     @login_manager.user_loader
     def load_user(id):
         return User.query.get(int(id))
 
-# Routes for authentication
     @app.route('/login', methods=['GET', 'POST'])
     def login():
         if request.method == 'POST':
@@ -108,26 +80,32 @@ def logout():
         logout_user()
         return redirect(url_for('index'))
 
-# Route for the homepage
     @app.route('/')
     def index():
         return render_template('index.html')
 
-# Route for the mindmap page
     @app.route('/mindmap')
     def mindmap():
+        try:
+            root_node = MindMapNode.query.filter_by(parent_id=None).first()
+            if not root_node:
+                root_node = MindMapNode(name="Wissenschaft")
+                db.session.add(root_node)
+                db.session.commit()
             return render_template('mindmap.html')
+        except Exception as e:
+            app.logger.error(f"Error loading mindmap: {str(e)}")
+            return render_template('mindmap.html', error="Fehler beim Laden der Mindmap. Bitte versuchen Sie es erneut.")
 
-# Route for user profile
     @app.route('/profile')
     @login_required
     def profile():
         thoughts = Thought.query.filter_by(user_id=current_user.id).order_by(Thought.timestamp.desc()).all()
         return render_template('profile.html', thoughts=thoughts)
 
-# API routes for mindmap and thoughts
     @app.route('/api/mindmap')
     def get_mindmap():
+        try:
             root_nodes = MindMapNode.query.filter_by(parent_id=None).all()
             
             def build_tree(node):
@@ -138,7 +116,16 @@ def get_mindmap():
                 }
             
             result = [build_tree(node) for node in root_nodes]
+            if not result:
+                root = MindMapNode(name="Wissenschaft")
+                db.session.add(root)
+                db.session.commit()
+                result = [build_tree(root)]
+                
             return jsonify(result)
+        except Exception as e:
+            app.logger.error(f"Error in get_mindmap: {str(e)}")
+            return jsonify({'error': 'Fehler beim Laden der Mindmap'}), 500
 
     @app.route('/api/thoughts/<int:node_id>', methods=['GET'])
     def get_thoughts(node_id):
@@ -157,19 +144,6 @@ def get_thoughts(node_id):
         
         return jsonify(thoughts)
 
-@app.route('/api/thought/<int:thought_id>', methods=['GET'])
-def get_thought(thought_id):
-    thought = Thought.query.get_or_404(thought_id)
-    
-    return jsonify({
-        'id': thought.id,
-        'content': thought.content,
-        'author': thought.author.username,
-        'timestamp': thought.timestamp.strftime('%d.%m.%Y, %H:%M'),
-        'branch': thought.branch,
-        'comments_count': len(thought.comments)
-    })
-
     @app.route('/api/thoughts', methods=['POST'])
     @login_required
     def add_thought():
@@ -242,7 +216,6 @@ def add_comment():
             'timestamp': comment.timestamp.strftime('%d.%m.%Y, %H:%M')
         })
 
-# Admin routes
     @app.route('/admin')
     @login_required
     def admin():
@@ -256,9 +229,52 @@ def admin():
         
         return render_template('admin.html', users=users, nodes=nodes, thoughts=thoughts)
 
-# Flask starten
+    return app
+
+# Database Models
+class User(UserMixin, db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    username = db.Column(db.String(80), unique=True, nullable=False)
+    email = db.Column(db.String(120), unique=True, nullable=False)
+    password_hash = db.Column(db.String(128))
+    is_admin = db.Column(db.Boolean, default=False)
+    thoughts = db.relationship('Thought', backref='author', lazy=True)
+    
+    def set_password(self, password):
+        self.password_hash = generate_password_hash(password)
+        
+    def check_password(self, password):
+        return check_password_hash(self.password_hash, password)
+
+class Thought(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    content = db.Column(db.Text, nullable=False)
+    timestamp = db.Column(db.DateTime, default=datetime.utcnow)
+    branch = db.Column(db.String(100), nullable=False)
+    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
+    comments = db.relationship('Comment', backref='thought', lazy=True, cascade="all, delete-orphan")
+
+class Comment(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    content = db.Column(db.Text, nullable=False)
+    timestamp = db.Column(db.DateTime, default=datetime.utcnow)
+    thought_id = db.Column(db.Integer, db.ForeignKey('thought.id'), nullable=False)
+    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
+    author = db.relationship('User', backref='comments')
+
+class MindMapNode(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String(100), nullable=False)
+    parent_id = db.Column(db.Integer, db.ForeignKey('mind_map_node.id'), nullable=True)
+    children = db.relationship('MindMapNode', backref=db.backref('parent', remote_side=[id]))
+    thoughts = db.relationship('Thought', secondary='node_thought_association', backref='nodes')
+
+# Association table for many-to-many relationship between MindMapNode and Thought
+node_thought_association = db.Table('node_thought_association',
+    db.Column('node_id', db.Integer, db.ForeignKey('mind_map_node.id'), primary_key=True),
+    db.Column('thought_id', db.Integer, db.ForeignKey('thought.id'), primary_key=True)
+)
+
 if __name__ == '__main__':
-    with app.app_context():
-        # Make sure tables exist
-        db.create_all()
-    app.run(host="0.0.0.0", debug=True)
+    app = create_app()
+    app.run(host="0.0.0.0", port=5000, debug=True)

website/init_db.py

@@ -1,88 +1,144 @@
-from app import app, db, User, MindMapNode
+import os
+import sys
+from pathlib import Path
+import shutil
+
+# Pfade zu möglichen Datenbankdateien
+db_paths = [
+    Path("instance/mindmap.db"),
+    Path("mindmap.db"),
+    Path("website/instance/mindmap.db"),
+    Path("website/mindmap.db")
+]
+
+# Lösche bestehende Datenbankdateien
+for db_path in db_paths:
+    if db_path.exists():
+        try:
+            print(f"Lösche Datenbank: {db_path}")
+            os.remove(db_path)
+        except Exception as e:
+            print(f"Fehler beim Löschen von {db_path}: {e}")
+
+# Stelle sicher, dass das instance-Verzeichnis existiert
+instance_dir = Path("instance")
+if not instance_dir.exists():
+    os.makedirs(instance_dir)
+
+# Importiere Datenbankmodelle und erstelle die Datenbank
+from app import db, create_app, User, MindMapNode, Thought, Comment
+
+app = create_app()
 
-def init_database():
-    """Initialize the database with admin user and mindmap structure."""
 with app.app_context():
-        # Create all tables
-        db.create_all()
+    print("Erstelle neue Datenbank...")
+    db.drop_all()  # Stelle sicher, dass alle Tabellen gelöscht sind
+    db.create_all() # Erstelle Tabellen basierend auf den Modellen
     
-        # Check if we already have users
-        if User.query.first() is None:
-            print("Creating admin user...")
-            # Create admin user
-            admin = User(username='admin', email='admin@example.com', is_admin=True)
-            admin.set_password('admin123')
+    # Erstelle einen Admin-Benutzer
+    admin = User(username="admin", email="admin@example.com", is_admin=True)
+    admin.set_password("admin123")
     db.session.add(admin)
     
-            # Create regular test user
-            test_user = User(username='test', email='test@example.com', is_admin=False)
-            test_user.set_password('test123')
-            db.session.add(test_user)
-            
-            db.session.commit()
-            print("Admin user created successfully!")
-        
-        # Check if we already have mindmap nodes
-        if MindMapNode.query.first() is None:
-            print("Creating initial mindmap structure...")
-            # Create initial mindmap structure
-            root = MindMapNode(name="Wissenschaftliche Mindmap")
+    # Erstelle Root-Node
+    root = MindMapNode(name="Wissenschaft")
     db.session.add(root)
     
-            # Level 1 nodes
-            node1 = MindMapNode(name="Naturwissenschaften", parent=root)
-            node2 = MindMapNode(name="Geisteswissenschaften", parent=root)
-            node3 = MindMapNode(name="Technologie", parent=root)
-            node4 = MindMapNode(name="Künste", parent=root)
-            db.session.add_all([node1, node2, node3, node4])
+    # Hauptkategorien erstellen
+    naturwissenschaften = MindMapNode(name="Naturwissenschaften", parent=root)
+    geisteswissenschaften = MindMapNode(name="Geisteswissenschaften", parent=root)
+    sozialwissenschaften = MindMapNode(name="Sozialwissenschaften", parent=root)
+    ingenieurwissenschaften = MindMapNode(name="Ingenieurwissenschaften", parent=root)
+    medizin = MindMapNode(name="Medizin", parent=root)
+    informatik = MindMapNode(name="Informatik", parent=root)
     
-            # Level 2 nodes - Naturwissenschaften
-            node1_1 = MindMapNode(name="Physik", parent=node1)
-            node1_2 = MindMapNode(name="Biologie", parent=node1)
-            node1_3 = MindMapNode(name="Chemie", parent=node1)
-            node1_4 = MindMapNode(name="Astronomie", parent=node1)
-            db.session.add_all([node1_1, node1_2, node1_3, node1_4])
+    db.session.add_all([naturwissenschaften, geisteswissenschaften, sozialwissenschaften, 
+                        ingenieurwissenschaften, medizin, informatik])
     
-            # Level 2 nodes - Geisteswissenschaften
-            node2_1 = MindMapNode(name="Philosophie", parent=node2)
-            node2_2 = MindMapNode(name="Geschichte", parent=node2)
-            node2_3 = MindMapNode(name="Psychologie", parent=node2)
-            node2_4 = MindMapNode(name="Soziologie", parent=node2)
-            db.session.add_all([node2_1, node2_2, node2_3, node2_4])
+    # Unterkategorien für Naturwissenschaften
+    physik = MindMapNode(name="Physik", parent=naturwissenschaften)
+    chemie = MindMapNode(name="Chemie", parent=naturwissenschaften)
+    biologie = MindMapNode(name="Biologie", parent=naturwissenschaften)
+    astronomie = MindMapNode(name="Astronomie", parent=naturwissenschaften)
+    geologie = MindMapNode(name="Geologie", parent=naturwissenschaften)
     
-            # Level 2 nodes - Technologie
-            node3_1 = MindMapNode(name="Informatik", parent=node3)
-            node3_2 = MindMapNode(name="Biotechnologie", parent=node3)
-            node3_3 = MindMapNode(name="Künstliche Intelligenz", parent=node3)
-            node3_4 = MindMapNode(name="Energietechnik", parent=node3)
-            db.session.add_all([node3_1, node3_2, node3_3, node3_4])
+    # Unterkategorien für Physik
+    quantenphysik = MindMapNode(name="Quantenphysik", parent=physik)
+    relativitätstheorie = MindMapNode(name="Relativitätstheorie", parent=physik)
+    thermodynamik = MindMapNode(name="Thermodynamik", parent=physik)
     
-            # Level 2 nodes - Künste
-            node4_1 = MindMapNode(name="Bildende Kunst", parent=node4)
-            node4_2 = MindMapNode(name="Musik", parent=node4)
-            node4_3 = MindMapNode(name="Literatur", parent=node4)
-            node4_4 = MindMapNode(name="Film", parent=node4)
-            db.session.add_all([node4_1, node4_2, node4_3, node4_4])
+    # Unterkategorien für Geisteswissenschaften
+    philosophie = MindMapNode(name="Philosophie", parent=geisteswissenschaften)
+    geschichte = MindMapNode(name="Geschichte", parent=geisteswissenschaften)
+    linguistik = MindMapNode(name="Linguistik", parent=geisteswissenschaften)
+    literaturwissenschaft = MindMapNode(name="Literaturwissenschaft", parent=geisteswissenschaften)
+    religionswissenschaft = MindMapNode(name="Religionswissenschaft", parent=geisteswissenschaften)
     
-            # Level 3 nodes - a few examples
-            # Physik
-            MindMapNode(name="Quantenphysik", parent=node1_1)
-            MindMapNode(name="Relativitätstheorie", parent=node1_1)
+    # Unterkategorien für Sozialwissenschaften
+    soziologie = MindMapNode(name="Soziologie", parent=sozialwissenschaften)
+    psychologie = MindMapNode(name="Psychologie", parent=sozialwissenschaften)
+    politikwissenschaft = MindMapNode(name="Politikwissenschaft", parent=sozialwissenschaften)
+    wirtschaftswissenschaften = MindMapNode(name="Wirtschaftswissenschaften", parent=sozialwissenschaften)
     
-            # Informatik
-            MindMapNode(name="Maschinelles Lernen", parent=node3_1)
-            MindMapNode(name="Softwareentwicklung", parent=node3_1)
-            MindMapNode(name="Datenbanken", parent=node3_1)
+    # Unterkategorien für Ingenieurwissenschaften
+    maschinenbau = MindMapNode(name="Maschinenbau", parent=ingenieurwissenschaften)
+    elektrotechnik = MindMapNode(name="Elektrotechnik", parent=ingenieurwissenschaften)
+    bauingenieurwesen = MindMapNode(name="Bauingenieurwesen", parent=ingenieurwissenschaften)
+    verfahrenstechnik = MindMapNode(name="Verfahrenstechnik", parent=ingenieurwissenschaften)
+    
+    # Unterkategorien für Medizin
+    humanmedizin = MindMapNode(name="Humanmedizin", parent=medizin)
+    zahnmedizin = MindMapNode(name="Zahnmedizin", parent=medizin)
+    pharmazie = MindMapNode(name="Pharmazie", parent=medizin)
+    neurologie = MindMapNode(name="Neurologie", parent=medizin)
+    onkologie = MindMapNode(name="Onkologie", parent=medizin)
+    
+    # Unterkategorien für Informatik
+    künstliche_intelligenz = MindMapNode(name="Künstliche Intelligenz", parent=informatik)
+    datenbanken = MindMapNode(name="Datenbanken", parent=informatik)
+    softwareentwicklung = MindMapNode(name="Softwareentwicklung", parent=informatik)
+    computergrafik = MindMapNode(name="Computergrafik", parent=informatik)
+    cybersicherheit = MindMapNode(name="Cybersicherheit", parent=informatik)
+    
+    # Alle Nodes zur Session hinzufügen
+    all_nodes = [physik, chemie, biologie, astronomie, geologie,
+                quantenphysik, relativitätstheorie, thermodynamik,
+                philosophie, geschichte, linguistik, literaturwissenschaft, religionswissenschaft,
+                soziologie, psychologie, politikwissenschaft, wirtschaftswissenschaften,
+                maschinenbau, elektrotechnik, bauingenieurwesen, verfahrenstechnik,
+                humanmedizin, zahnmedizin, pharmazie, neurologie, onkologie,
+                künstliche_intelligenz, datenbanken, softwareentwicklung, computergrafik, cybersicherheit]
+    
+    db.session.add_all(all_nodes)
+    
+    # Füge einen Beispiel-Gedanken hinzu
+    thought = Thought(
+        content="Dies ist ein Beispiel-Gedanke zur Wissenschaft allgemein.",
+        branch="Wissenschaft",
+        user_id=1  # Admin-Benutzer
+    )
+    db.session.add(thought)
+    root.thoughts.append(thought)
+    
+    # Füge weitere Beispiel-Gedanken hinzu
+    thought_ai = Thought(
+        content="Künstliche Intelligenz transformiert viele Bereiche der Wissenschaft und Gesellschaft.",
+        branch="Künstliche Intelligenz",
+        user_id=1
+    )
+    db.session.add(thought_ai)
+    künstliche_intelligenz.thoughts.append(thought_ai)
+    
+    thought_physik = Thought(
+        content="Die Quantenphysik stellt unser Verständnis der Realität grundlegend in Frage.",
+        branch="Quantenphysik",
+        user_id=1
+    )
+    db.session.add(thought_physik)
+    quantenphysik.thoughts.append(thought_physik)
     
-            # Commit changes
     db.session.commit()
-            print("Mindmap structure created successfully!")
     
-        print("Database initialization complete.")
-
-if __name__ == "__main__":
-    init_database()
-    print("You can now run the application with 'python app.py'")
-    print("Login with:")
-    print("  Admin: username=admin, password=admin123")
-    print("  User:  username=test, password=test123") 
+    print("Datenbank wurde erfolgreich initialisiert!")
+    print(f"Admin-Benutzer erstellt: admin/admin123")
+    print(f"Root-Node 'Wissenschaft' erstellt mit mehreren Hauptkategorien und Unterkategorien") 

website/run.py

@@ -1,11 +1,10 @@
 #!/usr/bin/env python3
 import os
-from init_db import init_database
-from app import app
+import sys
+from app import create_app
+
+app = create_app()
 
 if __name__ == "__main__":
-    # Initialize the database first
-    init_database()
-    
-    # Run the Flask application
+    # Run the app directly - no need to call init_database as it doesn't exist
     app.run(host="0.0.0.0", debug=True) 

website/templates/index.html

@@ -8,7 +8,7 @@
         
         <div class="flex flex-col space-y-4 sm:flex-row sm:space-y-0 sm:space-x-4 justify-center">
             <a href="{{ url_for('mindmap') }}" class="bg-gradient-to-r from-indigo-500 to-purple-600 hover:from-indigo-600 hover:to-purple-700 text-white font-semibold px-6 py-3 rounded-lg transition-all duration-300 transform hover:scale-105">
-                Starte die Mindmap
+                Zum Netzwerk
             </a>
             {% if not current_user.is_authenticated %}
             <a href="{{ url_for('register') }}" class="glass hover:bg-white/20 text-white font-semibold px-6 py-3 rounded-lg transition-all duration-300 transform hover:scale-105">
@@ -20,19 +20,16 @@
     
     <div class="mt-12 grid grid-cols-1 md:grid-cols-3 gap-6 w-full max-w-4xl">
         <div class="glass p-6 text-white">
-            <div class="text-3xl mb-2">🧠</div>
             <h3 class="text-xl font-semibold mb-2">Visualisiere Wissen</h3>
             <p class="text-white/80">Erkenne Zusammenhänge zwischen verschiedenen Wissensgebieten durch intuitive Mindmaps.</p>
         </div>
         
         <div class="glass p-6 text-white">
-            <div class="text-3xl mb-2">💡</div>
             <h3 class="text-xl font-semibold mb-2">Teile Gedanken</h3>
             <p class="text-white/80">Füge deine eigenen Gedanken zu bestehenden Themen hinzu und bereichere die Community.</p>
         </div>
         
         <div class="glass p-6 text-white">
-            <div class="text-3xl mb-2">🔄</div>
             <h3 class="text-xl font-semibold mb-2">Interaktive Vernetzung</h3>
             <p class="text-white/80">Beteilige dich an Diskussionen und sieh wie sich Ideen gemeinsam entwickeln.</p>
         </div>

website/templates/mindmap.html

@@ -99,6 +99,13 @@
     .node:hover circle {
         filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.8));
     }
+
+    /* Fix for "keine Auswahl" text */
+    #selected-node-title {
+        width: 100%;
+        overflow: visible;
+        word-wrap: break-word;
+    }
 </style>
 {% endblock %}
 
@@ -346,12 +353,21 @@
         // Create hierarchical layout
         const root = d3.hierarchy(data);
         
-        // Create tree layout
-        const treeLayout = d3.tree()
-            .size([height - 100, width - 200])
-            .nodeSize([80, 200]);
+        // Create radial layout instead of tree for all-direction branches
+        const radius = Math.min(width, height) / 2 - 100;
         
-        treeLayout(root);
+        const radialLayout = d3.cluster()
+            .size([360, radius]);
+        
+        radialLayout(root);
+        
+        // Convert to Cartesian coordinates
+        root.descendants().forEach(d => {
+            // Convert from polar to Cartesian coordinates
+            const angle = (d.x - 90) / 180 * Math.PI;
+            d.x = d.y * Math.cos(angle);
+            d.y = d.y * Math.sin(angle);
+        });
         
         // Create links
         const links = g.selectAll('.link')
@@ -360,10 +376,10 @@
             .append('path')
             .attr('class', 'link')
             .attr('d', d => {
-                return `M${d.source.y},${d.source.x}
-                        C${(d.source.y + d.target.y) / 2},${d.source.x}
-                         ${(d.source.y + d.target.y) / 2},${d.target.x}
-                         ${d.target.y},${d.target.x}`;
+                return `M${d.source.x},${d.source.y}
+                        C${(d.source.x + d.target.x) / 2},${(d.source.y + d.target.y) / 2}
+                         ${(d.source.x + d.target.x) / 2},${(d.source.y + d.target.y) / 2}
+                         ${d.target.x},${d.target.y}`;
             });
         
         // Create nodes
@@ -375,7 +391,7 @@
                 const categoryClass = getNodeCategory(d.data.name, rootCategories);
                 return `node ${categoryClass} ${d.data.id === selectedNode ? 'node--selected' : ''}`;
             })
-            .attr('transform', d => `translate(${d.y},${d.x})`)
+            .attr('transform', d => `translate(${d.x},${d.y})`)
             .on('click', (event, d) => selectNode(d.data.id, d.data.name))
             .on('mouseover', function(event, d) {
                 tooltip.transition()

website/test_app.py

@@ -0,0 +1,35 @@
+from flask import Flask
+
+app = Flask(__name__)
+
+@app.route('/')
+def hello():
+    return """
+    <!DOCTYPE html>
+    <html>
+    <head>
+        <title>Test Seite</title>
+        <style>
+            body { font-family: Arial, sans-serif; margin: 40px; line-height: 1.6; }
+            .container { max-width: 800px; margin: 0 auto; padding: 20px; border: 1px solid #ddd; border-radius: 5px; }
+            h1 { color: #333; }
+        </style>
+    </head>
+    <body>
+        <div class="container">
+            <h1>Test Seite funktioniert!</h1>
+            <p>Wenn Sie diese Seite sehen können, funktioniert der grundlegende Flask-Server korrekt.</p>
+            <p>Server-Status:</p>
+            <ul>
+                <li>Flask läuft auf Port 5000</li>
+                <li>Keine Datenbankverbindung erforderlich</li>
+                <li>Keine Templates erforderlich</li>
+            </ul>
+            <p>Versuchen Sie, diese URL in verschiedenen Browsern zu öffnen.</p>
+        </div>
+    </body>
+    </html>
+    """
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=5000, debug=True)