# HTTP server block - redirect to HTTPS
server {
    listen 80;
    server_name vhtv-stiftung.de www.vhtv-stiftung.de;
    
    # Redirect all HTTP traffic to HTTPS
    return 301 https://$server_name$request_uri;
}

# HTTPS server block
server {
    listen 443 ssl http2;
    server_name vhtv-stiftung.de www.vhtv-stiftung.de;

    # SSL Certificate Configuration
    ssl_certificate /etc/letsencrypt/live/vhtv-stiftung.de/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/vhtv-stiftung.de/privkey.pem;
    
    # SSL Security Settings
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA384;
    ssl_prefer_server_ciphers off;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 10m;
    
    # HSTS (HTTP Strict Transport Security)
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;

    # Enhanced Security headers
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header Referrer-Policy "no-referrer-when-downgrade" always;
    add_header Content-Security-Policy "default-src 'self' https: data: blob: 'unsafe-inline'" always;

    # Static files
    location /static/ {
        alias /opt/stiftung/app/static/;
        expires 1y;
        add_header Cache-Control "public, immutable";
    }

    location /media/ {
        alias /opt/stiftung/app/media/;
        expires 1y;
        add_header Cache-Control "public";
    }

    # Django application
    location / {
        proxy_pass http://127.0.0.1:8081;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        
        # Timeouts
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
        
        # Buffer settings
        proxy_buffering on;
        proxy_buffer_size 128k;
        proxy_buffers 4 256k;
        proxy_busy_buffers_size 256k;
    }

    # Gramps Web (optional)
    location /gramps/ {
        proxy_pass http://127.0.0.1:5000/;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    # Health check endpoint
    location /health/ {
        access_log off;
        return 200 "healthy\n";
        add_header Content-Type text/plain;
    }

    # Block access to sensitive files
    location ~ /\. {
        deny all;
    }

    location ~ ^/(\.env|docker-compose|Dockerfile) {
        deny all;
    }
}

# Redirect HTTP to HTTPS (add after SSL setup)
# server {
#     listen 80;
#     server_name 217.154.84.225 your-domain.com;
#     return 301 https://$server_name$request_uri;
# }