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SoulSync/core/sync/wishlist_readd.py

68 lines
2.5 KiB

"""Rebuild the track data the sync used to auto-wishlist an unmatched track, so the
sync-detail modal can re-add it with the EXACT same context (source_type='playlist'
+ the playlist's name/id). Pure — no I/O; the web route supplies the parsed sync
entry and calls the wishlist service.
"""
from __future__ import annotations
from typing import Any, Dict, List, Optional
def reconstruct_sync_track_data(
track_results: Optional[List[Dict[str, Any]]],
tracks: Optional[List[Dict[str, Any]]],
track_index: int,
) -> Optional[Dict[str, Any]]:
"""Return the ``spotify_track_data`` dict to re-add a synced track to the wishlist.
Prefers the FULL original track from the cached playlist tracks (``tracks``, i.e.
tracks_json) — matched by the track_result's ``source_track_id``, then by index —
because that carries the full album object + images the original auto-add used.
Falls back to a minimal dict rebuilt from the track_result's own fields.
Returns None when the index is out of range, the row isn't a 'wishlist'
(unmatched, auto-added) track, or there's no id to key on — so a caller can't
re-wishlist a matched/downloaded track or an unidentifiable one.
"""
if not track_results or track_index < 0 or track_index >= len(track_results):
return None
tr = track_results[track_index] or {}
# Only rows the sync actually sent to the wishlist are re-addable.
if tr.get('download_status') != 'wishlist':
return None
sid = str(tr.get('source_track_id') or '')
tracks = tracks or []
# Prefer the full original track: same index if its id matches, else search by id.
full = None
if 0 <= track_index < len(tracks):
cand = tracks[track_index]
if isinstance(cand, dict) and (not sid or str(cand.get('id') or '') == sid):
full = cand
if full is None and sid:
full = next(
(t for t in tracks if isinstance(t, dict) and str(t.get('id') or '') == sid),
None,
)
if isinstance(full, dict) and full.get('id'):
return full
# Fallback: rebuild from the track_result fields (id required).
if not sid:
return None
album: Dict[str, Any] = {'name': tr.get('album') or ''}
if tr.get('image_url'):
album['images'] = [{'url': tr['image_url']}]
return {
'id': sid,
'name': tr.get('name') or '',
'artists': [{'name': tr.get('artist') or ''}],
'album': album,
'duration_ms': tr.get('duration_ms') or 0,
}
__all__ = ["reconstruct_sync_track_data"]