document.getElementById("submit").addEventListener("click", generateQuickCmd, false);

const debug = false; // DISABLE FOR PRODUCTION
const baseURL = debug ? "http://localhost:8081/ngx" : "https://dev.nevets.tech/ngx";

const service = "[Unit]\n" +
    "Description=The NGINX HTTP and reverse proxy server\n" +
    "After=syslog.target network-online.target remote-fs.target nss-lookup.target\n" +
    "Wants=network-online.target\n" +
    "\n" +
    "[Service]\n" +
    "Type=forking\n" +
    "PIDFile=/var/run/nginx.pid\n" +
    "ExecStartPre=/usr/sbin/nginx -t\n" +
    "ExecStart=/usr/sbin/nginx\n" +
    "ExecReload=/usr/sbin/nginx -s reload\n" +
    "ExecStop=/bin/kill -s QUIT $MAINPID\n" +
    "PrivateTmp=true\n" +
    "\n" +
    "[Install]\n" +
    "WantedBy=multi-user.target";


// async function fetch1() {
//     let url = "https://thingproxy.freeboard.io/fetch/ " + encodeURIComponent("https://nginx.org/download/");
//     await $.get(url, (data, status) => {
//         console.log(data);
//         return data.body;
//     });
//     return "ERROR?";
// }
// const sleep = ms => new Promise(r => setTimeout(r, ms));


async function generateQuickCmd() {
    let nginxStr = document.getElementById("link").value;

    if (nginxStr === "") {
        document.getElementById("script").innerHTML = "ERROR!? Did you leave the NGINX Verison field blank?" + "\n<span class=\"tooltiptext\" id=\"myTooltip\">Copy to clipboard</span>";
        return;
    }
    if (extractNginxVersion(nginxStr)===null || extractNginxVersion(nginxStr).includes("null")) {
        document.getElementById("script").innerHTML = "ERROR!? Regex could not find the version in the input field!" + "\n<span class=\"tooltiptext\" id=\"myTooltip\">Copy to clipboard</span>";
        return;
    }


    let reqData = "{" +
        "\"version\":\"" + encodeURIComponent(extractNginxVersion(nginxStr)) + "\"" + "}";
    let continueCycle = true;
    await fetch(baseURL + "/dhv", {
        method: "POST",
        body: reqData,
    }).then(res => res.json().then(json => {
        if (json.url.includes("false")) {
            document.getElementById("script").innerHTML = "ERROR!? Do you have a valid verison of NGINX?" + "\n<span class=\"tooltiptext\" id=\"myTooltip\">Copy to clipboard</span>";
            continueCycle = false;
        }
    }));
    if (!continueCycle) {
        return;
    }
    reqData = "{" +
        "\"content\":\"" + encodeURI(buildCmd()) + "\"" +
        "}";
    fetch(baseURL + "/create", {
        method: "POST",
        body: reqData,
    }).then(res => res.json().then(json => {
        document.getElementById("script").innerHTML = "curl -s " + json.url + " | bash" + "\n<span class=\"tooltiptext\" id=\"myTooltip\">Copy to clipboard</span>";
    }));
}

function outFunc() {
    var tooltip = document.getElementById("myTooltip");
    tooltip.innerHTML = "Copy to clipboard";
}

function copy() {
    var copyText = document.getElementById("script").innerHTML.split("<span")[0];
    var tooltip = document.getElementById("myTooltip");
    navigator.clipboard.writeText(copyText).then(r => tooltip.innerHTML = "Copied!");
}

function buildCmd() {
    let nginxStr = document.getElementById("link").value; //user input

    let script = "#!/bin/bash\n" +
        "if [ \"$EUID\" -ne 0 ]\n" +
        "then echo \"Please run as root (or with sudo)\"\n" +
        "  exit\n" +
        "fi\n\n" +
        "apt-get update\n" +
        "apt-get install -y build-essential libpcre3 libpcre3-dev zlib1g zlib1g-dev libssl-dev wget git\n" +
        "wget https://nginx.org/download/nginx-" + extractNginxVersion(nginxStr) + ".tar.gz\n" +
        "tar -xzvf " + "nginx-" + extractNginxVersion(nginxStr) + ".tar.gz\n";
        if (document.getElementById("extMod").checked === true) {
            script += "git clone https://github.com/google/ngx_brotli.git\n" +
            "git clone https://github.com/openresty/headers-more-nginx-module.git\n" +
            "cd ngx_brotli/\n" +
            "git submodule update --init\n" +
            "cd ../nginx-" + extractNginxVersion(nginxStr) + "/\n";
        } else {
            script += "cd nginx-" + extractNginxVersion(nginxStr) + "\n";
        }
        script += "cp -r conf /etc/nginx\n" +
        "mkdir /var/cache/nginx\n" +
        "chown www-data:www-data /var/cache/nginx\n" +
        getConfigureStr() + "\n" +
        "make\n" +
        "make install\n" +
        "echo \"" + service + "\" >> /lib/systemd/system/nginx.service\n" +
        "systemctl enable nginx.service\n" +
        "systemctl start nginx.service";

        return script;
}

function getConfigureStr() {
    let str = "./configure --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/etc/nginx/logs/error.log --http-log-path=/etc/nginx/logs/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=www-data --group=www-data ";
    if (document.getElementById("extMod").checked === true) {
        str += "--add-module=../headers-more-nginx-module --add-module=../ngx_brotli ";
    }
    if (document.getElementById("http3").checked === true) {
        str += "--with-http_v3_module ";
    }
    str += "--with-file-aio --with-http_ssl_module --with-http_v2_module --with-http_realip_module --with-http_addition_module --with-http_auth_request_module --with-http_gunzip_module --with-http_gzip_static_module ";

    return str;
}

function extractNginxVersion(url) {
    // This regex matches 'nginx' followed by a hyphen and a version number, followed by '.tar.gz'
    const regex = /\d+\.\d+\.\d+/;

    // Use the regex to search the string
    const match = url.match(regex);

    // If a match is found, return it. Otherwise, return null or an appropriate message
    return match ? match[0] : null;
}