server {
    listen 80;
    server_name localhost;

    # Security headers
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;

    # CORS for API endpoints
    location /api/ {
        # Forward tenant ID from client
        proxy_set_header X-Mandant-ID $http_x_mandant_id;
        
        # Proxy headers
        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_set_header X-Forwarded-Port $server_port;
        
        # Disable buffering for streaming responses (Mercure)
        proxy_buffering off;
        
        # Pass to Symfony FPM
        location ~ ^/api/(.+)\.php(/|$) {
            fastcgi_pass symfony-fpm:9000;
            fastcgi_split_path_info ^(.+.php)(/.*)$;
            include fastcgi_params;
            fastcgi_param SCRIPT_FILENAME /app/$fastcgi_script_name;
            fastcgi_param DOCUMENT_ROOT /app;
        }

        # API catch-all - rewrite to index.php for Symfony routing
        try_files $uri /api/index.php$is_args$args;
    }

    # Mercure Hub
    location /.well-known/mercure {
        proxy_pass https://mercure-hub/.well-known/mercure;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        
        # Mercure needs WebSocket support
        upgrade_http 2;
    }

    # Static assets (frontend build output)
    location /assets/ {
        alias /app/public/assets/;
        expires 7d;
        add_header Cache-Control "public, immutable";
    }

    # Health check endpoint
    location /api/health {
        access_log off;
        proxy_pass http://symfony-fpm:8000/api/health;
        proxy_set_header Host localhost:8000;
    }

    # Frontend SPA fallback (static files served from public/)
    location / {
        root /app/public;
        try_files $uri $uri/ /index.html;
    }
}