# Change YOUR_ACCESS_KEY to your Access Key
# Change example.com (server_name) to your website url

fastcgi_cache_path /var/cache/nginxfastcgi levels=1:2 keys_zone=fastcgicache:10m inactive=10m max_size=64m;
fastcgi_cache_key $scheme$request_method$host$request_uri$http_x_prerender$http_user_agent;
fastcgi_cache_lock on;
fastcgi_cache_use_stale error timeout invalid_header updating http_500;
fastcgi_cache_valid 5m;

map $http_user_agent $spider_ua {
    default 0;
    "~*BotView" 0;
    "~*googlebot|yahoo!\\ slurp|bingbot|yandex|baiduspider|facebookexternalhit|twitterbot|rogerbot|linkedinbot|embedly|quora\\ link\\ preview|showyoubot|outbrain|pinterest\\/0\\.|developers.google.com\\/\\+\\/web\\/snippet|slackbot|vkshare|w3c_validator|redditbot|applebot|whatsapp|flipboard|tumblr|bitlybot|skypeuripreview|nuzzel|discordbot|google\\ page\\ speed|qwantify|pinterestbot|bitrix\\ link\\ preview|xing-contenttabreceiver|chrome-lighthouse|telegrambot|google-inspectiontool|petalbot" 1;
}

map $args $spider_args {
    default $spider_ua;
    "~(^|&)_escaped_fragment_=" 1;
}

map $http_x_spider $x_spider {
    default $spider_args;
    "1" 0;
}

map $uri $spider {
    default $x_spider;
    "~*\\.(js|css|xml|less|png|jpg|jpeg|gif|pdf|txt|ico|rss|zip|mp3|rar|exe|wmv|doc|avi|ppt|mpg|mpeg|tif|wav|mov|psd|ai|xls|mp4|m4a|swf|dat|dmg|iso|flv|m4v|torrent|ttf|woff|woff2|svg|eot)" 0;
}

server {
    listen 443 ssl;
    listen [::]:443 ssl;

    server_name www.example.com;

    root /var/www/html/clrhtml/public;
    index index.html index.htm index.php;

    ssl_certificate /etc/letsencrypt/live/www.example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/www.example.com/privkey.pem;

    access_log /var/log/nginx/nginx.vhost.access.log;
    error_log /var/log/nginx/nginx.vhost.error.log debug;

    location / {
        if ($spider = 1) {
             rewrite (.*) /spider last;
        }
        try_files $uri $uri/ =404;
    }

    location ~ \.php$ {
        if ($spider = 1) {
             rewrite (.*) /spider last;
        }
        include snippets/fastcgi-php.conf;
        fastcgi_pass unix:/var/run/php/php8.1-fpm.sock;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }

    location /spider {
        if ($spider = 0) {
            return 404;
        }

        set $backend "spider.services.utility-server.com";
        proxy_pass https://$backend;
        proxy_set_header Host $server_name;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        resolver 8.8.8.8 8.8.4.4 valid=300s;
        proxy_redirect off;
        proxy_buffering off;
        proxy_buffer_size 16k;
        proxy_busy_buffers_size 24k;
        proxy_buffers 64 4k;

        rewrite .* /$scheme://$host$request_uri? break;
    }

    location ~ /\.ht {
        deny all;
    }
}