[scrolller] support album posts (#7339)

gallery_dl/extractor/scrolller.py

@@ -20,8 +20,8 @@ class ScrolllerExtractor(Extractor):
     category = "scrolller"
     root = "https://scrolller.com"
     directory_fmt = ("{category}", "{subredditTitle}")
-    filename_fmt = "{id}{title:? //}.{extension}"
-    archive_fmt = "{id}"
+    filename_fmt = "{id}{num:?_//>03}{title:? //}.{extension}"
+    archive_fmt = "{id}_{num}"
     request_interval = (0.5, 1.5)
 
     def _init(self):
@@ -31,23 +31,36 @@ class ScrolllerExtractor(Extractor):
         self.login()
 
         for post in self.posts():
-
-            media_sources = post.get("mediaSources")
-            if not media_sources:
-                self.log.warning("%s: No media files", post.get("id"))
-                continue
-
-            src = max(media_sources, key=self._sort_key)
-            post.update(src)
-            url = src["url"]
-            text.nameext_from_url(url, post)
+            files = self._extract_files(post)
+            post["count"] = len(files)
 
             yield Message.Directory, post
-            yield Message.Url, url, post
+            for file in files:
+                url = file["url"]
+                post.update(file)
+                yield Message.Url, url, text.nameext_from_url(url, post)
 
     def posts(self):
         return ()
 
+    def _extract_files(self, post):
+        album = post.pop("albumContent", None)
+        if not album:
+            sources = post.get("mediaSources")
+            if not sources:
+                self.log.warning("%s: No media files", post.get("id"))
+                return ()
+            src = max(sources, key=self._sort_key)
+            src["num"] = 0
+            return (src,)
+
+        files = []
+        for num, media in enumerate(album, 1):
+            src = max(media["mediaSources"], key=self._sort_key)
+            src["num"] = num
+            files.append(src)
+        return files
+
     def login(self):
         username, password = self._get_auth_info()
         if username:

test/results/scrolller.py

@@ -43,34 +43,45 @@ __tests__ = (
 {
     "#url"  : "https://scrolller.com/cabin-in-northern-finland-7nagf1929p",
     "#class": scrolller.ScrolllerPostExtractor,
-    "#urls" : "https://yocto.scrolller.com/cabin-in-northern-finland-93vjsuxmcz.jpg",
+    "#urls" : "https://static.scrolller.com/yocto/cabin-in-northern-finland-93vjsuxmcz.jpg",
 
-    "albumUrl"        : None,
+    "count"           : 1,
     "displayName"     : None,
     "extension"       : "jpg",
     "filename"        : "cabin-in-northern-finland-93vjsuxmcz",
     "fullLengthSource": None,
     "gfycatSource"    : None,
-    "hasAudio"        : None,
+    "hasAudio"        : False,
     "height"          : 1350,
     "id"              : 10478722,
     "isNsfw"          : False,
     "isOptimized"     : False,
-    "isPaid"          : None,
+    "isPaid"          : False,
     "mediaSources"    : list,
+    "num"             : 0,
     "ownerAvatar"     : None,
     "redditPath"      : "/r/AmateurPhotography/comments/jj048q/cabin_in_northern_finland/",
     "redgifsSource"   : None,
-    "subredditId"     : 0,
+    "subredditId"     : 413,
     "subredditTitle"  : "AmateurPhotography",
     "subredditUrl"    : "/r/AmateurPhotography",
     "tags"            : None,
     "title"           : "Cabin in northern Finland",
-    "url"             : "https://yocto.scrolller.com/cabin-in-northern-finland-93vjsuxmcz.jpg",
-    "username"        : None,
+    "url"             : "https://static.scrolller.com/yocto/cabin-in-northern-finland-93vjsuxmcz.jpg",
+    "username"        : "",
     "width"           : 1080,
 },
 
+{
+    "#url"    : "https://scrolller.com/long-comic-the-twelve-tasks-of-eve-12ch1ve8ko",
+    "#class"  : scrolller.ScrolllerPostExtractor,
+    "#pattern": r"https://static\.scrolller\.com/\w+/long-comic-the-twelve-tasks-of-eve-\d+-\w+\.png",
+    "#count"  : 177,
+
+    "count": 177,
+    "num"  : range(1, 177),
+},
+
 {
     "#url"    : "https://scrolller.com/following",
     "#class"  : scrolller.ScrolllerFollowingExtractor,