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Diffstat (limited to 'src/data/composite/things/track/withAlwaysReferenceByDirectory.js')
-rw-r--r-- | src/data/composite/things/track/withAlwaysReferenceByDirectory.js | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/data/composite/things/track/withAlwaysReferenceByDirectory.js b/src/data/composite/things/track/withAlwaysReferenceByDirectory.js new file mode 100644 index 0000000..fac8e21 --- /dev/null +++ b/src/data/composite/things/track/withAlwaysReferenceByDirectory.js @@ -0,0 +1,78 @@ +// Controls how find.track works - it'll never be matched by a reference +// just to the track's name, which means you don't have to always reference +// some *other* (much more commonly referenced) track by directory instead +// of more naturally by name. + +import {input, templateCompositeFrom} from '#composite'; +import find from '#find'; +import {isBoolean} from '#validators'; + +import {exitWithoutDependency, exposeUpdateValueOrContinue} + from '#composite/control-flow'; +import {withPropertyFromObject} from '#composite/data'; +import {withResolvedReference} from '#composite/wiki-data'; + +export default templateCompositeFrom({ + annotation: `withAlwaysReferenceByDirectory`, + + outputs: ['#alwaysReferenceByDirectory'], + + steps: () => [ + exposeUpdateValueOrContinue({ + validate: input.value(isBoolean), + }), + + // Remaining code is for defaulting to true if this track is a rerelease of + // another with the same name, so everything further depends on access to + // trackData as well as originalReleaseTrack. + + exitWithoutDependency({ + dependency: 'trackData', + mode: input.value('empty'), + value: input.value(false), + }), + + exitWithoutDependency({ + dependency: 'originalReleaseTrack', + value: input.value(false), + }), + + // It's necessary to use the custom trackOriginalReleasesOnly find function + // here, so as to avoid recursion issues - the find.track() function depends + // on accessing each track's alwaysReferenceByDirectory, which means it'll + // hit *this track* - and thus this step - and end up recursing infinitely. + // By definition, find.trackOriginalReleasesOnly excludes tracks which have + // an originalReleaseTrack update value set, which means even though it does + // still access each of tracks' `alwaysReferenceByDirectory` property, it + // won't access that of *this* track - it will never proceed past the + // `exitWithoutDependency` step directly above, so there's no opportunity + // for recursion. + withResolvedReference({ + ref: 'originalReleaseTrack', + data: 'trackData', + find: input.value(find.trackOriginalReleasesOnly), + }).outputs({ + '#resolvedReference': '#originalRelease', + }), + + exitWithoutDependency({ + dependency: '#originalRelease', + value: input.value(false), + }), + + withPropertyFromObject({ + object: '#originalRelease', + property: input.value('name'), + }), + + { + dependencies: ['name', '#originalRelease.name'], + compute: (continuation, { + name, + ['#originalRelease.name']: originalName, + }) => continuation({ + ['#alwaysReferenceByDirectory']: name === originalName, + }), + }, + ], +}); |