[fansly] add 'previews' option (#8686)

docs/configuration.rst

@@ -3137,6 +3137,16 @@ Description
     List of file formats to consider during format selection.
 
 
+extractor.fansly.previews
+-------------------------
+Type
+    ``bool``
+Default
+    ``true``
+Description
+    Download `previews` if no other format is available.
+
+
 extractor.fansly.token
 ----------------------
 Type

docs/gallery-dl.conf

@@ -354,7 +354,8 @@
         {
             "token": "",
 
-            "formats": null
+            "formats" : null,
+            "previews": true
         },
         "flickr":
         {

gallery_dl/extractor/fansly.py

@@ -25,6 +25,7 @@ class FanslyExtractor(Extractor):
 
     def _init(self):
         self.api = FanslyAPI(self)
+        self.previews = self.config("previews", True)
 
         if fmts := self.config("formats"):
             self.formats = set(fmts)
@@ -88,8 +89,8 @@ class FanslyExtractor(Extractor):
                     exc.__class__.__name__, exc)
         return files
 
-    def _extract_attachment(self, files, post, attachment):
-        media = attachment["media"]
+    def _extract_attachment(self, files, post, attachment, preview=False):
+        media = attachment["preview" if preview else "media"]
 
         variants = media.pop("variants") or []
         if media.get("locations"):
@@ -107,6 +108,10 @@ class FanslyExtractor(Extractor):
         try:
             variant = max(formats)[-1]
         except Exception:
+            if self.previews and "preview" in attachment and not preview:
+                self.log.info("%s/%s: Downloading Preview",
+                              post["id"], attachment["id"])
+                return self._extract_attachment(files, post, attachment, True)
             return self.log.warning("%s/%s: No format available",
                                     post["id"], attachment["id"])
 
@@ -120,6 +125,7 @@ class FanslyExtractor(Extractor):
 
         file = {
             **variant,
+            "preview": preview,
             "format": variant["type"],
             "date": self.parse_timestamp(media["createdAt"]),
             "date_updated": self.parse_timestamp(media["updatedAt"]),

test/results/fansly.py

@@ -89,6 +89,7 @@ __tests__ = (
         "mimetype"      : "video/mp4",
         "originalHeight": 590,
         "originalWidth" : 786,
+        "preview"       : False,
         "resolutionMode": 1,
         "status"        : 1,
         "type"          : "video",
@@ -98,6 +99,40 @@ __tests__ = (
     },
 },
 
+{
+    "#url"     : "https://fansly.com/post/527804734266941440",
+    "#comment" : "preview image (#8686)",
+    "#class"   : fansly.FanslyPostExtractor,
+    "#auth"    : "token",
+    "#pattern" : r"https://cdn3.fansly.com/509388488890658816/527804380229935104.jpeg\?ngsw-bypass=true&Expires=\d+.+",
+
+    "createdAt"      : 1687332814,
+    "date"           : "dt:2023-06-21 07:33:34",
+    "extension"      : "jpeg",
+    "filename"       : "527804380229935104",
+    "fypFlags"       : 2,
+    "id"             : "527804734266941440",
+    "file"           : {
+        "accountId"     : "509388488890658816",
+        "createdAt"     : 1687332730,
+        "date"          : "dt:2023-06-21 07:32:10",
+        "date_updated"  : "dt:2023-06-21 07:32:13",
+        "flags"         : 394,
+        "format"        : 1,
+        "height"        : 1464,
+        "id"            : "527804380229935104",
+        "location"      : "/509388488890658816/527804380229935104.jpeg",
+        "mimetype"      : "image/jpeg",
+        "preview"       : True,
+        "resolutionMode": 2,
+        "status"        : 1,
+        "type"          : "image",
+        "updatedAt"     : 1687332733,
+        "variantHash"   : {},
+        "width"         : 1349,
+    },
+},
+
 {
     "#url"     : "https://fansly.com/Oliviaus/posts",
     "#class"   : fansly.FanslyCreatorPostsExtractor,