Four-cut cluster pulling action bodies out of PlaylistDetail.tsx. 741
→ 635 LOC (−106). Each handler on the page becomes a thin wrapper
around a parameterized utility; pure code move, no behaviour change.
runPlaylistZipDownload — the buildDownloadUrl → invoke('download_zip')
flow with start/complete/fail dispatches to useZipDownloadStore and
the setZipDownloadId hand-off. Takes playlist + id + downloadFolder
+ requestDownloadFolder + the id-setter as deps. PlaylistDetail
loses the invoke / join / buildDownloadUrl / sanitizeFilename imports
that only this handler used.
playlistBulkPlayActions — three exports (playPlaylistAll,
shufflePlaylistAll, enqueuePlaylistAll) with a shared BulkPlayDeps
shape (songsLength + id + tracks + touchPlaylist + playTrack +
enqueue). Same length-guard, same touchPlaylist call, same
shuffle / play / enqueue branches as before.
startPlaylistRowDrag — the threshold-drag dispatch on row mousedown
(5px deadzone, then bulk-songs / playlist-reorder / single-song
payload depending on selection state + filtered-view flag). Takes
the mouse event + idx + songs + selectedIds + isFiltered + startDrag.
runPlaylistReorderDrop — the psy-drop event handler that lives
inside the tracklist useEffect. Parses the custom-event detail,
computes from→to indexes, and updates songs + savePlaylist + clears
dropTargetIdx. The useEffect itself stays in the page because it
wires up the event listener.
PlaylistDetail's import list also drops `invoke`, `join`,
`buildDownloadUrl`, `sanitizeFilename` — they followed the ZIP
helper to its new file.
Frank Stellmacher