add url previewer in post content

lib/fetcher.ts

@@ -132,3 +132,25 @@ export const getSignalGist = cache(async (id: string) => {
 
   return data;
 });
+
+export interface LinkResult {
+  meta: Meta;
+  links: Link[];
+  rel: [];
+}
+export interface Link {
+  href: string;
+  rel: string[];
+  type: string;
+}
+export interface Meta {
+  description: string;
+  title: string;
+  author: string;
+  canonical: string;
+}
+export const urlMeta = cache(async (url: string) => {
+  return (await (
+    await fetch(`http://iframely.server.crestify.com/iframely?url=${url}`)
+  ).json()) as LinkResult;
+});

lib/utils/index.ts

@@ -152,3 +152,10 @@ export const frameArea = (
   // point the camera to look at the center of the box
   camera.lookAt(boxCenter.x, boxCenter.y, boxCenter.z);
 };
+
+export const isUrl = (url: string) => {
+  const urlRegex = new RegExp(
+    '^(http:\\/\\/www\\.|https:\\/\\/www\\.|http:\\/\\/|https:\\/\\/)?[a-z0-9]+([\\-.]{1}[a-z0-9]+)*\\.[a-z]{2,5}(:[0-9]{1,5})?(\\/.*)?$',
+  );
+  return urlRegex.test(url);
+};