diff options
Diffstat (limited to 'src/data/composite/things/track/withPropertyFromAlbum.js')
-rw-r--r-- | src/data/composite/things/track/withPropertyFromAlbum.js | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/data/composite/things/track/withPropertyFromAlbum.js b/src/data/composite/things/track/withPropertyFromAlbum.js new file mode 100644 index 00000000..b236a6e8 --- /dev/null +++ b/src/data/composite/things/track/withPropertyFromAlbum.js @@ -0,0 +1,49 @@ +// Gets a single property from this track's album, providing it as the same +// property name prefixed with '#album.' (by default). If the track's album +// isn't available, then by default, the property will be provided as null; +// set {notFoundMode: 'exit'} to early exit instead. + +import {input, templateCompositeFrom} from '#composite'; +import {is} from '#validators'; + +import {withPropertyFromObject} from '#composite/data'; + +import withAlbum from './withAlbum.js'; + +export default templateCompositeFrom({ + annotation: `withPropertyFromAlbum`, + + inputs: { + property: input.staticValue({type: 'string'}), + + notFoundMode: input({ + validate: is('exit', 'null'), + defaultValue: 'null', + }), + }, + + outputs: ({ + [input.staticValue('property')]: property, + }) => ['#album.' + property], + + steps: () => [ + withAlbum({ + notFoundMode: input('notFoundMode'), + }), + + withPropertyFromObject({ + object: '#album', + property: input('property'), + }), + + { + dependencies: ['#value', input.staticValue('property')], + compute: (continuation, { + ['#value']: value, + [input.staticValue('property')]: property, + }) => continuation({ + ['#album.' + property]: value, + }), + }, + ], +}); |