[issuu] fix 'user' extractor

gallery_dl/extractor/issuu.py

@@ -54,26 +54,30 @@ class IssuuPublicationExtractor(IssuuBase, GalleryExtractor):
 class IssuuUserExtractor(IssuuBase, Extractor):
     """Extractor for all publications of a user/publisher"""
     subcategory = "user"
-    pattern = r"(?:https?://)?issuu\.com/([^/?#]+)/?$"
+    pattern = r"(?:https?://)?issuu\.com/([^/?#]+)(?:/(\d*))?$"
     example = "https://issuu.com/USER"
 
-    def __init__(self, match):
-        Extractor.__init__(self, match)
-        self.user = match.group(1)
-
     def items(self):
-        url = "{}/call/profile/v1/documents/{}".format(self.root, self.user)
-        params = {"offset": 0, "limit": "25"}
+        user, pnum = self.groups
+        base = self.root + "/" + user
+        pnum = text.parse_int(pnum, 1)
 
         while True:
-            data = self.request(url, params=params).json()
-
-            for publication in data["items"]:
-                publication["url"] = "{}/{}/docs/{}".format(
-                    self.root, self.user, publication["uri"])
-                publication["_extractor"] = IssuuPublicationExtractor
-                yield Message.Queue, publication["url"], publication
-
-            if not data["hasMore"]:
+            url = base + "/" + str(pnum) if pnum > 1 else base
+            try:
+                html = self.request(url).text
+                data = util.json_loads(text.unescape(text.extr(
+                    html, '</main></div><script data-json="', '" id="')))
+                docs = data["docs"]
+            except Exception as exc:
+                self.log.debug("", exc_info=exc)
                 return
-            params["offset"] += data["limit"]
+
+            for publication in docs:
+                url = self.root + "/" + publication["uri"]
+                publication["_extractor"] = IssuuPublicationExtractor
+                yield Message.Queue, url, publication
+
+            if len(docs) < 48:
+                return
+            pnum += 1