Fix tags not starting with og:

server.py

@@ -34,75 +34,75 @@ INVALID_TOKEN = JSONResponse(
     401
 )
 VALID_OG_TAGS = [
-    "title",
-    "type",
-    "image",
-    "url",
-    "audio",
-    "description",
-    "determiner",
-    "locale",
-    "locale:alternative",
-    "site_name",
-    "image:url",
-    "image:secure_url",
-    "image:type",
-    "image:width",
-    "image:height",
-    "image:alt",
-    "video",
-    "video:url",
-    "video:secure_url",
-    "video:type",
-    "video:width",
-    "video:height",
-    "video:alt",
-    "video:actor",
-    "video:actor:role",
-    "video:director",
-    "video:writer",
-    "video:duration",
-    "video:release_date",
-    "video:tag",
-    "video:series"
-    "audio:url",
-    "audio:secure_url",
-    "audio:type",
-    "music:duration",
-    "music:album",
-    "music:album:disc",
-    "music:album:track",
-    "music:musician",
-    "music:song",
-    "music:song:disc",
-    "music:song:track",
-    "music:release_date",
-    "music:creator",
-    "article:published_time",
-    "article:modified_time",
-    "article:expiration_time",
-    "article:author",
-    "article:section",
-    "article:tag",
-    "book:author",
-    "book:tag",
-    "book:isbn",
-    "book:release_date",
-    "profile:first_name",
-    "profile:last_name",
-    "profile:username",
-    "profile:gender"
+    "og:title",
+    "og:type",
+    "og:image",
+    "og:url",
+    "og:audio",
+    "og:description",
+    "og:determiner",
+    "og:locale",
+    "og:locale:alternative",
+    "og:site_name",
+    "og:image:url",
+    "og:image:secure_url",
+    "og:image:type",
+    "og:image:width",
+    "og:image:height",
+    "og:image:alt",
+    "og:video",
+    "og:video:url",
+    "og:video:secure_url",
+    "og:video:type",
+    "og:video:width",
+    "og:video:height",
+    "og:video:alt",
+    "og:video:actor",
+    "og:video:actor:role",
+    "og:video:director",
+    "og:video:writer",
+    "og:video:duration",
+    "og:video:release_date",
+    "og:video:tag",
+    "og:video:series"
+    "og:audio:url",
+    "og:audio:secure_url",
+    "og:audio:type",
+    "og:music:duration",
+    "og:music:album",
+    "og:music:album:disc",
+    "og:music:album:track",
+    "og:music:musician",
+    "og:music:song",
+    "og:music:song:disc",
+    "og:music:song:track",
+    "og:music:release_date",
+    "og:music:creator",
+    "og:article:published_time",
+    "og:article:modified_time",
+    "og:article:expiration_time",
+    "og:article:author",
+    "og:article:section",
+    "og:article:tag",
+    "og:book:author",
+    "og:book:tag",
+    "og:book:isbn",
+    "og:book:release_date",
+    "og:profile:first_name",
+    "og:profile:last_name",
+    "og:profile:username",
+    "og:profile:gender"
 ]
 URL_OG_TAGS = [
-    "video",
-    "video:url",
-    "video:secure_url",
-    "image",
-    "image:url",
-    "image:secure_url",
-    "audio",
-    "audio:url",
-    "audio:secure_url"
+    "og:video",
+    "og:video:url",
+    "og:video:secure_url",
+    "og:image",
+    "og:image:url",
+    "og:image:secure_url",
+    "og:audio",
+    "og:audio:url",
+    "og:audio:secure_url"
 ]
 
 
@@ -176,7 +176,7 @@ def preview_url(
         if tag.get("property", "").startswith("og:"):
             tag_name = tag.get("property")[3:]
             if tag_name in VALID_OG_TAGS:
-                og_tags[tag_name] = tag.get("content")
+                og_tags["og:" + tag_name] = tag.get("content", tag.get("value"))
 
     for tag_name in URL_OG_TAGS:
         if tag_name in og_tags: