feat: add ability to scrape youtube video

lib/string.ts

@@ -30,3 +30,26 @@ export function extractHashTags(inputString: string) {
 
   return hashtags;
 }
+
+export const isYoutubeLink = (link: string) => {
+  try {
+    const url = new URL(link);
+    return ["youtu.be", "youtube.com","www.youtube.com" ].includes(url.hostname);
+  } catch (err) {
+    console.log(err);
+    return false;
+  }
+};
+
+export function extractYoutubeId(link: string) {
+  const url = new URL(link);
+  if (url.searchParams.has("v")) {
+    const id = url.searchParams.get("v");
+
+    if (id?.length && id.length > 4) {
+      return id;
+    }
+  }
+
+  return url.pathname.replace(/^\//, "");
+}