server {
    listen 5173;
    server_name localhost;
    
    # Serve static files
    root /usr/share/nginx/html;
    index index.html;
    
    # Enable gzip compression
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
    
    # Proxy API requests to backend
    # API always listens on port 8000 inside container, regardless of host port
    location /api/ {
        proxy_pass http://api:8000/api/;
        proxy_http_version 1.1;
        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;
        
        # CORS headers (if needed)
        add_header Access-Control-Allow-Origin *;
        add_header Access-Control-Allow-Methods "GET, POST, PUT, DELETE, OPTIONS";
        add_header Access-Control-Allow-Headers "Authorization, Content-Type";
        
        # Handle preflight requests
        if ($request_method = OPTIONS) {
            return 204;
        }
    }
    
    # Proxy WebSocket connections
    # API always listens on port 8000 inside container, regardless of host port
    location /ws/ {
        proxy_pass http://api:8000/ws/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        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;
        
        # WebSocket timeout settings
        proxy_read_timeout 3600s;
        proxy_send_timeout 3600s;
    }
    
    # React Router - serve index.html for all routes
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Simple health endpoint for container health checks
    location = /health {
        add_header Content-Type text/plain;
        return 200 'ok';
    }
    
    # Cache static assets
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }
}