1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
// 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 {withPropertyFromObject} from '#composite/data';
import {withResolvedReference} from '#composite/wiki-data';
import {
exitWithoutDependency,
exposeDependencyOrContinue,
exposeUpdateValueOrContinue,
} from '#composite/control-flow';
export default templateCompositeFrom({
annotation: `withAlwaysReferenceByDirectory`,
outputs: ['#alwaysReferenceByDirectory'],
steps: () => [
exposeUpdateValueOrContinue({
validate: input.value(isBoolean),
}),
// withAlwaysReferenceByDirectory is sort of a fragile area - we can't
// find the track's album the normal way because albums' track lists
// recurse back into alwaysReferenceByDirectory!
withResolvedReference({
ref: 'dataSourceAlbum',
data: 'albumData',
find: input.value(find.album),
}).outputs({
'#resolvedReference': '#album',
}),
withPropertyFromObject({
object: '#album',
property: input.value('alwaysReferenceTracksByDirectory'),
}),
// Falsy mode means this exposes true if the album's property is true,
// but continues if the property is false (which is also the default).
exposeDependencyOrContinue({
dependency: '#album.alwaysReferenceTracksByDirectory',
mode: input.value('falsy'),
}),
// 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,
}),
},
],
});
|
