events {
    worker_connections 1024;
}

http {
    upstream frontend {
        server frontend:3000;
    }
    
    upstream api {
        server api-gateway:8000;
    }

    server {
        listen 80;
        server_name localhost;

        # Frontend routes
        location / {
            proxy_pass http://frontend;
            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 support for React dev server
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
        }

        # API routes
        location /api/ {
            proxy_pass http://api;
            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;
            
            # Remove /api prefix before forwarding
            rewrite ^/api/(.*)$ /$1 break;
        }

        # Health check endpoint
        location /health {
            proxy_pass http://api/health;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
        }

        # Static assets
        location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg)$ {
            proxy_pass http://frontend;
            expires 1y;
            add_header Cache-Control "public, immutable";
        }
    }
}