added the install of libbrotli-dev

for some reason it refuses to install without it

app.js

@@ -1,5 +1,8 @@
 document.getElementById("submit").addEventListener("click", generateQuickCmd, false);
 
+const debug = false; // DISABLE FOR PRODUCTION
+const baseURL = debug ? "http://localhost:8081/ngx" : "https://api.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" +
@@ -28,30 +31,41 @@ const service = "[Unit]\n" +
 // }
 // const sleep = ms => new Promise(r => setTimeout(r, ms));
 
-async function getHTML() {
-    return fetch("corsurl" + encodeURIComponent("https://nginx.org/download/"))
-        .then((response)=>response.body.toString())
-        .then((responseJson)=>{return responseJson});
-}
 
 async function generateQuickCmd() {
     let nginxStr = document.getElementById("link").value;
-    // if (!st.toString().includes(extractNginxVersion(nginxStr))) {
+
-    //     document.getElementById("script").innerHTML = "ERROR!? Do you have a valid verison of NGINX?" + "\n<span class=\"tooltiptext\" id=\"myTooltip\">Copy to clipboard</span>";
-    //     return;
-    // }
     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;
     }
-    let reqData = "{" +
+    if (extractNginxVersion(nginxStr)===null || extractNginxVersion(nginxStr).includes("null")) {
-        "\"content\":\"" + encodeURI(buildCmd()) + "\"" +
+        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;
+    }
 
-    fetch("https://api.nevets.tech/ngx/create", {
+
+    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,
-        mode: "cors"
     }).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>";
     }));
@@ -77,7 +91,7 @@ function buildCmd() {
         "  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" +
+        "apt-get install -y libbrotli-dev 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) {