diff options
author | (quasar) nebula <qznebula@protonmail.com> | 2023-08-26 18:28:19 -0300 |
---|---|---|
committer | (quasar) nebula <qznebula@protonmail.com> | 2023-09-05 21:02:52 -0300 |
commit | 809ae313afdb6c7bb859a94170f6fd2c6c888591 (patch) | |
tree | 1933d5f4123335fc111630ecefdf48c178040437 /src/data | |
parent | f562896d4d67558a32726f7086beebf29019a44d (diff) |
data: Track.composite.withAlbum
Diffstat (limited to 'src/data')
-rw-r--r-- | src/data/things/track.js | 83 |
1 files changed, 67 insertions, 16 deletions
diff --git a/src/data/things/track.js b/src/data/things/track.js index 016f5199..6c08aa01 100644 --- a/src/data/things/track.js +++ b/src/data/things/track.js @@ -474,34 +474,85 @@ export class Track extends Thing { } ]), - // Gets the listed properties from this track's album, providing them as - // dependencies (by default) with '#album.' prefixed before each property - // name. If the track's album isn't available, the same dependency names - // will each be provided as null. - withAlbumProperties: ({properties, prefix = '#album'}) => ({ - annotation: `Track.composite.withAlbumProperties`, + // Gets the track's album. Unless earlyExitIfNotFound is overridden false, + // this will early-exit with null in two cases - albumData being missing, + // or not including an album whose .tracks array includes this track. + withAlbum: ({to = '#album', earlyExitIfNotFound = true} = {}) => ({ + annotation: `Track.composite.withAlbum`, flags: {expose: true, compose: true}, expose: { dependencies: ['this', 'albumData'], - options: {properties, prefix}, + mapContinuation: {to}, + options: {earlyExitIfNotFound}, + + compute({ + this: track, + albumData, + '#options': {earlyExitIfNotFound}, + }, continuation) { + if (empty(albumData)) { + return ( + (earlyExitIfNotFound + ? continuation.exit(null) + : continuation({to: null}))); + } - compute({this: track, albumData, '#options': {properties, prefix}}, continuation) { - const album = albumData?.find((album) => album.tracks.includes(track)); - const newDependencies = {}; + const album = + albumData?.find(album => album.tracks.includes(track)); - for (const property of properties) { - newDependencies[prefix + '.' + property] = - (album - ? album[property] - : null); + if (!album) { + return ( + (earlyExitIfNotFound + ? continuation.exit(null) + : continuation({to: null}))); } - return continuation(newDependencies); + return continuation({to: album}); }, }, }), + // Gets the listed properties from this track's album, providing them as + // dependencies (by default) with '#album.' prefixed before each property + // name. If the track's album isn't available, and earlyExitIfNotFound + // hasn't been set, the same dependency names will be provided as null. + withAlbumProperties: ({ + properties, + prefix = '#album', + earlyExitIfNotFound = false, + }) => + Thing.composite.from(`Track.composite.withAlbumProperties`, [ + Track.composite.withAlbum({earlyExitIfNotFound}), + + { + flags: {expose: true, compose: true}, + expose: { + dependencies: ['#album'], + options: {properties, prefix}, + + compute({ + '#album': album, + '#options': {properties, prefix}, + }, continuation) { + const raise = {}; + + if (album) { + for (const property of properties) { + raise[prefix + '.' + property] = album[property]; + } + } else { + for (const property of properties) { + raise[prefix + '.' + property] = null; + } + } + + return continuation.raise(raise); + }, + }, + }, + ]), + // Just includes the original release of this track as a dependency, or // null, if it's not a rerelease. Note that this will early exit if the // original release is specified by reference and that reference doesn't |