Added function to fetch links to verify the

src/lib/fetchLink.ts

@@ -0,0 +1,49 @@
+/**
+ * This function will fetch a url to follow all redirects and compare the base url
+ * with the RegEx to validate false and true positives.
+ *
+ * @param message The message that originally triggered the provided RegEx
+ * @param banRegEx RegEx to check against
+ * @returns @type boolean
+ */
+
+const linkChecker = async (message: string, banRegEx: RegExp) => {
+  const detectedLinks = message.split(" ").map(subStr => {
+    if (banRegEx.test(subStr)) {
+      return subStr;
+    }
+  });
+
+  if (!detectedLinks || detectedLinks.length === 0) {
+    return false;
+  }
+
+  const resolvedURLs = detectedLinks.map(async string => {
+    if (string === undefined) {
+      return false;
+    }
+
+    const url =
+      string.startsWith("http://") || string.startsWith("https://")
+        ? string
+        : `https://${string}`;
+
+    const res = await fetch(url, {
+      headers: {
+        "user-agent":
+          "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0"
+      }
+    });
+
+    const resolvedURL = new URL(res.url);
+    const baseURL = resolvedURL.hostname.split(".").slice(-2).join(".");
+
+    if (/^x\.com/i.test(baseURL)) {
+      return true;
+    }
+  });
+
+  return (await Promise.all(resolvedURLs)).includes(true);
+};
+
+export default linkChecker;