[alaa] fix playlist extraction

youtube_dl/extractor/alaa.py

@@ -68,5 +68,14 @@ class AlaaPlaylistIE(InfoExtractor):
         set_id = self._match_id(url)
         set_data = self._download_json('https://alaatv.com/api/v2/set/{0}'.format(set_id), set_id)
         set_title = set_data['data']['title']
-        set_content = list(map(lambda x: x['url']['web'], set_data['data']['contents']))
+
+        def map_formats(v):
+            return {
+                'id': str(v['id']),
+                'title': v['title'],
+                'url': v['url']['web'],
+            }
+
+        set_content = list(map(map_formats, set_data['data']['contents']))
+
         return self.playlist_result(set_content, set_id, set_title)