events {
    worker_connections 1024;
}

http {
    upstream app {
        server ux-analyst-ai:3000;
    }

    server {
        listen 80;
        server_name localhost;

        # Security headers
        add_header X-Frame-Options DENY;
        add_header X-Content-Type-Options nosniff;
        add_header X-XSS-Protection "1; mode=block";
        add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;

        # Gzip compression
        gzip on;
        gzip_vary on;
        gzip_min_length 1024;
        gzip_types text/plain text/css text/xml text/javascript application/javascript application/xml+rss application/json;

        # Rate limiting
        limit_req_zone $binary_remote_addr zone=api:10m rate=10r/m;
        limit_req_zone $binary_remote_addr zone=general:10m rate=100r/m;

        # API routes with rate limiting
        location /api/ {
            limit_req zone=api burst=5 nodelay;
            proxy_pass http://app;
            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_connect_timeout 60s;
            proxy_send_timeout 60s;
            proxy_read_timeout 300s;
        }

        # Screenshot routes
        location /screenshots/ {
            limit_req zone=general burst=20 nodelay;
            proxy_pass http://app;
            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;

            # Cache images
            expires 1d;
            add_header Cache-Control "public, immutable";
        }

        # All other routes
        location / {
            limit_req zone=general burst=20 nodelay;
            proxy_pass http://app;
            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
        location /health {
            access_log off;
            proxy_pass http://app/api/health;
        }
    }
}