upstream telegram-bot-api {
    server api:8081;
}

server {
    listen 80;
    server_name _;

    chunked_transfer_encoding on;
    proxy_connect_timeout 600;
    proxy_send_timeout 600;
    proxy_read_timeout 600;
    send_timeout 600;
    client_max_body_size 2G;
    client_body_buffer_size 30M;
    keepalive_timeout 0;

    location ~* \/file\/bot\d+:(.*) {
        rewrite ^/file\/bot(.*) /$1 break;
        try_files $uri @files;
    }

    location / {
        try_files $uri @api;
    }

    location @files {
        root /var/lib/telegram-bot-api;
        gzip on;
        gzip_vary on;
        gzip_proxied any;
        gzip_comp_level 6;
        gzip_buffers 64 8k;
        gzip_http_version 1.1;
        gzip_min_length 1100;
    }

    location @api {
        proxy_pass  http://telegram-bot-api;
        proxy_redirect off;
        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-Host $server_name;
    }
}