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"""Playlist API helper - Centralized API calls for playlist operations.
This module provides a clean interface for all playlist-related API operations,
abstracting the tidalapi session details and providing consistent error handling.
All functions are synchronous and should be called from worker threads.
"""
from requests.exceptions import RequestException
from tidalapi import Session, Track, UserPlaylist
from tidal_dl_ng.logger import logger_gui
def get_user_playlists(session: Session) -> list[UserPlaylist]:
"""Fetch all user playlists from Tidal API.
Args:
session: Authenticated Tidal session
Returns:
List of UserPlaylist objects
Raises:
RequestException: If API call fails
ValueError: If user is not authenticated
"""
if not session.user:
raise ValueError("User not authenticated") # noqa: TRY003
try:
playlists = session.user.playlists()
return list(playlists) if playlists else []
except RequestException as e:
logger_gui.error(f"Failed to fetch user playlists: {e}")
raise
def get_playlist_items(playlist: UserPlaylist) -> list[Track]:
"""Fetch all items from a playlist.
Args:
playlist: UserPlaylist object
Returns:
List of Track objects in the playlist (excludes videos and other media types)
Raises:
RequestException: If API call fails
"""
try:
# Force refresh to get latest items
playlist._items = None
# Replace single-call fetching by robust pagination to retrieve ALL items
# Some tidalapi backends return only the first N items (e.g., 100) by default.
# We iterate with an offset/limit until exhaustion.
all_items: list[Track] = []
offset: int = 0
limit: int = 100 # Use API-supported page size to avoid 400 errors
while True:
try:
batch = playlist.items(offset=offset, limit=limit)
except TypeError:
batch = playlist.items(offset, limit)
if not batch:
break
# Filter to only include Track objects
tracks_batch = [item for item in batch if isinstance(item, Track)]
all_items.extend(tracks_batch)
# Progress
offset += len(batch)
# Safety: stop if no progress to avoid infinite loop
if len(batch) < limit:
break
except RequestException as e:
logger_gui.error(f"Failed to fetch playlist items for {playlist.id}: {e}")
raise
else:
# Silenced diagnostics: previously logged first few tracks for ID normalization
return all_items
def add_track_to_playlist(session: Session, playlist_id: str, track_id: str) -> None:
"""Add a track to a playlist.
Args:
session: Authenticated Tidal session
playlist_id: UUID of the playlist
track_id: UUID of the track to add
Raises:
RequestException: If API call fails
ValueError: If playlist not found
"""
try:
playlist = session.playlist(playlist_id)
if not playlist:
raise ValueError(f"Playlist {playlist_id} not found") # noqa: TRY003
# Normalize ID as int where supported
try:
norm_id = int(track_id)
except (TypeError, ValueError):
norm_id = track_id
playlist.add([norm_id])
# Silenced info log
except RequestException as e:
logger_gui.error(f"Failed to add track {track_id} to playlist {playlist_id}: {e}")
raise
def remove_track_from_playlist(session: Session, playlist_id: str, track_id: str) -> None:
"""Remove a track from a playlist.
Args:
session: Authenticated Tidal session
playlist_id: UUID of the playlist
track_id: UUID of the track to remove
Raises:
RequestException: If API call fails
ValueError: If playlist or track not found
"""
try:
playlist = session.playlist(playlist_id)
if not playlist:
raise ValueError(f"Playlist {playlist_id} not found") # noqa: TRY003
# Always use index-based removal with robust pagination
# Force refresh and paginate to get all items
playlist._items = None
items_all = []
offset = 0
limit = 100
while True:
try:
batch = playlist.items(offset=offset, limit=limit)
except TypeError:
batch = playlist.items(offset, limit)
if not batch:
break
items_all.extend(batch)
offset += len(batch)
if len(batch) < limit:
break
# Find the track index
track_index = None
for i, item in enumerate(items_all):
item_id = getattr(item, "id", None)
if str(item_id) == str(track_id):
track_index = i
break
if track_index is None:
# Silenced warning: skip quietly if not found
return
# Remove by index
playlist.remove_by_index(track_index)
# Silenced info log
except RequestException as e:
logger_gui.error(f"Failed to remove track {track_id} from playlist {playlist_id}: {e}")
raise
def get_playlist_metadata(playlist: UserPlaylist) -> dict[str, str | int]:
"""Extract metadata from a playlist object.
Args:
playlist: UserPlaylist object
Returns:
Dictionary containing:
- name: Playlist name
- item_count: Number of items in playlist
- id: Playlist UUID
"""
return {
"name": playlist.name if hasattr(playlist, "name") else f"Playlist {playlist.id}",
"item_count": playlist.num_tracks if hasattr(playlist, "num_tracks") else 0,
"id": str(playlist.id),
}
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