diff options
Diffstat (limited to 'src/data/composite/things/track-section')
4 files changed, 95 insertions, 6 deletions
diff --git a/src/data/composite/things/track-section/index.js b/src/data/composite/things/track-section/index.js index 3202ed49..f11a2ab5 100644 --- a/src/data/composite/things/track-section/index.js +++ b/src/data/composite/things/track-section/index.js @@ -1 +1,3 @@ export {default as withAlbum} from './withAlbum.js'; +export {default as withContinueCountingFrom} from './withContinueCountingFrom.js'; +export {default as withStartCountingFrom} from './withStartCountingFrom.js'; diff --git a/src/data/composite/things/track-section/withAlbum.js b/src/data/composite/things/track-section/withAlbum.js index 608cc0cd..e257062e 100644 --- a/src/data/composite/things/track-section/withAlbum.js +++ b/src/data/composite/things/track-section/withAlbum.js @@ -1,10 +1,9 @@ -// Gets the track section's album. This will early exit if ownAlbumData is -// missing. If there's no album whose list of track sections includes this one, -// the output dependency will be null. +// Gets the track section's album. -import {input, templateCompositeFrom} from '#composite'; +import {templateCompositeFrom} from '#composite'; import {withUniqueReferencingThing} from '#composite/wiki-data'; +import {soupyReverse} from '#composite/wiki-properties'; export default templateCompositeFrom({ annotation: `withAlbum`, @@ -13,8 +12,7 @@ export default templateCompositeFrom({ steps: () => [ withUniqueReferencingThing({ - data: 'ownAlbumData', - list: input.value('trackSections'), + reverse: soupyReverse.input('albumsWhoseTrackSectionsInclude'), }).outputs({ ['#uniqueReferencingThing']: '#album', }), diff --git a/src/data/composite/things/track-section/withContinueCountingFrom.js b/src/data/composite/things/track-section/withContinueCountingFrom.js new file mode 100644 index 00000000..0ca52b6c --- /dev/null +++ b/src/data/composite/things/track-section/withContinueCountingFrom.js @@ -0,0 +1,25 @@ +import {templateCompositeFrom} from '#composite'; + +import withStartCountingFrom from './withStartCountingFrom.js'; + +export default templateCompositeFrom({ + annotation: `withContinueCountingFrom`, + + outputs: ['#continueCountingFrom'], + + steps: () => [ + withStartCountingFrom(), + + { + dependencies: ['#startCountingFrom', 'tracks'], + compute: (continuation, { + ['#startCountingFrom']: startCountingFrom, + ['tracks']: tracks, + }) => continuation({ + ['#continueCountingFrom']: + startCountingFrom + + tracks.length, + }), + }, + ], +}); diff --git a/src/data/composite/things/track-section/withStartCountingFrom.js b/src/data/composite/things/track-section/withStartCountingFrom.js new file mode 100644 index 00000000..ef345327 --- /dev/null +++ b/src/data/composite/things/track-section/withStartCountingFrom.js @@ -0,0 +1,64 @@ +import {input, templateCompositeFrom} from '#composite'; + +import {raiseOutputWithoutDependency} from '#composite/control-flow'; +import {withNearbyItemFromList, withPropertyFromObject} from '#composite/data'; + +import withAlbum from './withAlbum.js'; + +export default templateCompositeFrom({ + annotation: `withStartCountingFrom`, + + inputs: { + from: input({ + type: 'number', + defaultDependency: 'startCountingFrom', + acceptsNull: true, + }), + }, + + outputs: ['#startCountingFrom'], + + steps: () => [ + { + dependencies: [input('from')], + compute: (continuation, { + [input('from')]: from, + }) => + (from === null + ? continuation() + : continuation.raiseOutput({'#startCountingFrom': from})), + }, + + withAlbum(), + + raiseOutputWithoutDependency({ + dependency: '#album', + output: input.value({'#startCountingFrom': 1}), + }), + + withPropertyFromObject({ + object: '#album', + property: input.value('trackSections'), + }), + + withNearbyItemFromList({ + list: '#album.trackSections', + item: input.myself(), + offset: input.value(-1), + }).outputs({ + '#nearbyItem': '#previousTrackSection', + }), + + raiseOutputWithoutDependency({ + dependency: '#previousTrackSection', + output: input.value({'#startCountingFrom': 1}), + }), + + withPropertyFromObject({ + object: '#previousTrackSection', + property: input.value('continueCountingFrom'), + }).outputs({ + '#previousTrackSection.continueCountingFrom': '#startCountingFrom', + }), + ], +}); |