Fixes youtube embed issues (#50)

* fixes youtube embed

* move extractMetaHtml test to its own file

* tests cleanup

* Add fallback for youtube meta data

* lint

* Check for youtube in the url domain

* use hostname instead of full url to check for link domain

* checks only for domain

1 files changed, 26 insertions, 0 deletions

diff --git a/src/lib/extractYoutubeMeta.ts b/src/lib/extractYoutubeMeta.ts
new file mode 100644
index 000000000..566e3be46
--- /dev/null
+++ b/src/lib/extractYoutubeMeta.ts
@@ -0,0 +1,26 @@
+export const extractYoutubeMeta = (html: string): Record<string, string> => {
+  const res: Record<string, string> = {}
+  const youtubeTitleRegex = /"videoDetails":.*"title":"([^"]*)"/i
+  const youtubeDescriptionRegex =
+    /"videoDetails":.*"shortDescription":"([^"]*)"/i
+  const youtubeThumbnailRegex = /"videoDetails":.*"url":"(.*)(default\.jpg)/i
+
+  const youtubeTitleMatch = youtubeTitleRegex.exec(html)
+  const youtubeDescriptionMatch = youtubeDescriptionRegex.exec(html)
+  const youtubeThumbnailMatch = youtubeThumbnailRegex.exec(html)
+
+  if (youtubeTitleMatch && youtubeTitleMatch.length >= 1) {
+    res.title = decodeURI(youtubeTitleMatch[1])
+  }
+  if (youtubeDescriptionMatch && youtubeDescriptionMatch.length >= 1) {
+    res.description = decodeURI(youtubeDescriptionMatch[1]).replace(
+      /\\n/g,
+      '\n',
+    )
+  }
+  if (youtubeThumbnailMatch && youtubeThumbnailMatch.length >= 2) {
+    res.image = youtubeThumbnailMatch[1] + 'default.jpg'
+  }
+
+  return res
+}