server {
    listen 80;
    server_name otp.intaleqapp.com;
    return 301 https://$server_name$request_uri;
}

server {
    listen 443 ssl http2;
    server_name otp.intaleqapp.com;

    # SSL — Let's Encrypt
    ssl_certificate /etc/letsencrypt/live/otp.intaleqapp.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/otp.intaleqapp.com/privkey.pem;

    # SSL Hardening
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384;
    ssl_prefer_server_ciphers off;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 1d;
    ssl_session_tickets off;

    # HSTS
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains" always;

    # Document root
    root /var/www/otp.intaleqapp.com/public;
    index index.php;

    # Logging
    access_log /var/log/nginx/otp.intaleqapp.com.access.log;
    error_log /var/log/nginx/otp.intaleqapp.com.error.log;

    # API endpoints — route to PHP files
    location /api/ {
        try_files $uri $uri/ /api$uri.php?$query_string;

        # PHP handling
        location ~ \.php$ {
            include fastcgi_params;
            fastcgi_pass unix:/var/run/php/php8.1-fpm.sock;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            fastcgi_read_timeout 30;
        }
    }

    # Block direct access to includes/
    location /includes/ {
        deny all;
        return 404;
    }

    # Block access to config
    location /config.php {
        deny all;
        return 404;
    }

    # Block access to hidden files
    location ~ /\. {
        deny all;
        return 404;
    }

    # Block access to SQL files
    location ~ \.sql$ {
        deny all;
        return 404;
    }

    # Block access to log files
    location ~ \.log$ {
        deny all;
        return 404;
    }

    # Health check endpoint
    location /health {
        access_log off;
        return 200 '{"status":"ok"}';
        add_header Content-Type application/json;
    }

    # Default PHP handling
    location ~ \.php$ {
        include fastcgi_params;
        fastcgi_pass unix:/var/run/php/php8.1-fpm.sock;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    }

    # Deny everything else
    location / {
        return 404;
    }
}