worker_processes 1;

events {
    worker_connections 1024;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    sendfile on;
    keepalive_timeout 65;

    server {
        listen 80;
        server_name _; # Accept any server name
        root /usr/share/nginx/html;
        index index.html;

        location / {
            try_files $uri $uri/ /index.html =404;
            add_header 'Access-Control-Allow-Origin' '*';
            add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
            add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
        }

        # Enable compression
        gzip on;
        gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

        # Configure caching for static assets
        location ~* \.(jpg|jpeg|png|gif|ico|css|js)$ {
            expires 1y;
            add_header Cache-Control "public, max-age=31536000";
        }

        # Special handling for service worker
        location = /service-worker.js {
            expires -1;
            add_header Cache-Control "no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0";
        }
    }
}