fix get_playlist continuations

ytmusicapi/continuations.py

@@ -1,5 +1,32 @@
+from typing import Any, Optional
+
 from ytmusicapi.navigation import nav
 
+CONTINUATION_TOKEN = ["continuationItemRenderer", "continuationEndpoint", "continuationCommand", "token"]
+CONTINUATION_ITEMS = ["onResponseReceivedActions", 0, "appendContinuationItemsAction", "continuationItems"]
+
+
+def get_continuation_token(results: list[dict[str, Any]]) -> Optional[str]:
+    return nav(results[-1], CONTINUATION_TOKEN, True)
+
+
+def get_continuations_2025(results, limit, request_func, parse_func):
+    items = []
+    continuation_token = get_continuation_token(results["contents"])
+    while continuation_token and (limit is None or len(items) < limit):
+        response = request_func({"continuation": continuation_token})
+        continuation_items = nav(response, CONTINUATION_ITEMS, True)
+        if not continuation_items:
+            break
+
+        contents = get_continuation_contents(results, parse_func)
+        if len(contents) == 0:
+            break
+        items.extend(contents)
+        continuation_token = get_continuation_token(continuation_items)
+
+    return items
+
 
 def get_continuations(
     results, continuation_type, limit, request_func, parse_func, ctoken_path="", reloadable=False

ytmusicapi/mixins/playlists.py

@@ -182,12 +182,8 @@ def get_playlist(
             playlist["tracks"] = parse_playlist_items(content_data["contents"])
 
             parse_func = lambda contents: parse_playlist_items(contents)
-            if "continuations" in content_data:
-                playlist["tracks"].extend(
-                    get_continuations(
-                        content_data, "musicPlaylistShelfContinuation", limit, request_func, parse_func
-                    )
-                )
+            request_func = lambda body: self._send_request(endpoint, body)
+            playlist["tracks"].extend(get_continuations_2025(content_data, limit, request_func, parse_func))
 
         playlist["duration_seconds"] = sum_total_duration(playlist)
         return playlist