# Redirect HTTP → HTTPS
server {
    listen 80;
    server_name _;
    return 301 https://$host$request_uri;
}

# HTTPS
server {
    listen 443 ssl;
    http2 on;
    server_name _;

    ssl_certificate     /etc/nginx/certs/cert.pem;
    ssl_certificate_key /etc/nginx/certs/key.pem;

    # Moderne TLS-Konfiguration (Mozilla "intermediate")
    ssl_protocols       TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers off;
    ssl_ciphers         ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305;
    ssl_session_timeout 1d;
    ssl_session_cache   shared:SSL:10m;
    ssl_session_tickets off;

    # HSTS (1 Jahr)
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;

    # Frontend (statische Dateien)
    root /usr/share/nginx/html;
    index index.html;

    # API zum Backend
    location /api/ {
        proxy_pass http://backend:8000;
        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;
        proxy_read_timeout 120s;
    }

    location /auth/ {
        proxy_pass http://backend:8000;
        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;
    }

    location /health {
        proxy_pass http://backend:8000;
    }

    # Frontend-Dateien
    location / {
        try_files $uri $uri/ /index.html;
    }
}