6 files changed, 149 insertions, 0 deletions
diff --git a/src/data/composite/things/artwork/index.js b/src/data/composite/things/artwork/index.js
new file mode 100644
index 00000000..b92bff72
--- /dev/null
+++ b/src/data/composite/things/artwork/index.js
@@ -0,0 +1 @@
+export {default as withDate} from './withDate.js';
diff --git a/src/data/composite/things/artwork/withDate.js b/src/data/composite/things/artwork/withDate.js
new file mode 100644
index 00000000..08f1427c
--- /dev/null
+++ b/src/data/composite/things/artwork/withDate.js
@@ -0,0 +1,35 @@
+import {input, templateCompositeFrom} from '#composite';
+
+import {withPropertyFromObject} from '#composite/data';
+
+export default templateCompositeFrom({
+  annotation: `withDate`,
+
+  inputs: {
+    from: input({
+      defaultDependency: 'date',
+      acceptsNull: true,
+    }),
+  },
+
+  outputs: ['#date'],
+
+  steps: () => [
+    {
+      dependencies: [input('from')],
+      compute: (continuation, {
+        [input('from')]: date,
+      }) =>
+        (date
+          ? continuation.raiseOutput({'#date': date})
+          : continuation()),
+    },
+
+    withPropertyFromObject({
+      object: 'thing',
+      property: 'dateFromThingProperty',
+    }).outputs({
+      ['#value']: '#date',
+    }),
+  ],
+})
diff --git a/src/data/composite/wiki-data/index.js b/src/data/composite/wiki-data/index.js
index be83e4c9..ee7411f2 100644
--- a/src/data/composite/wiki-data/index.js
+++ b/src/data/composite/wiki-data/index.js
@@ -12,6 +12,7 @@ export {default as inputSoupyFind} from './inputSoupyFind.js';
 export {default as inputSoupyReverse} from './inputSoupyReverse.js';
 export {default as inputWikiData} from './inputWikiData.js';
 export {default as withClonedThings} from './withClonedThings.js';
+export {default as withConstitutedArtwork} from './withConstitutedArtwork.js';
 export {default as withContributionListSums} from './withContributionListSums.js';
 export {default as withCoverArtDate} from './withCoverArtDate.js';
 export {default as withDirectory} from './withDirectory.js';
diff --git a/src/data/composite/wiki-data/withConstitutedArtwork.js b/src/data/composite/wiki-data/withConstitutedArtwork.js
new file mode 100644
index 00000000..9843588a
--- /dev/null
+++ b/src/data/composite/wiki-data/withConstitutedArtwork.js
@@ -0,0 +1,44 @@
+import {input, templateCompositeFrom} from '#composite';
+import thingConstructors from '#things';
+import {isContributionList} from '#validators';
+
+export default templateCompositeFrom({
+  annotation: `withConstitutedArtwork`,
+
+  inputs: {
+    contribsProperty: input({type: 'string'}),
+    artistProperty: input({type: 'string'}),
+    dateProperty: input({type: 'string'}),
+  },
+
+  outputs: ['#constitutedArtwork'],
+
+  steps: () => [
+    {
+      dependencies: [
+        input.myself(),
+        'find',
+
+        input('contribsProperty'),
+        input('dateProperty'),
+      ],
+
+      compute: (continuation, {
+        [input.myself()]: myself,
+        ['find']: find,
+
+        [input('contribsProperty')]: contribsProperty,
+        [input('dateProperty')]: dateProperty,
+      }) => continuation({
+        ['#constitutedArtwork']:
+          Object.assign(new thingConstructors.Artwork, {
+            thing: myself,
+            find: find,
+
+            artistContribsFromThingProperty: contribsProperty,
+            dateFromThingProperty: dateProperty,
+          }),
+      }),
+    },
+  ],
+});
diff --git a/src/data/composite/wiki-properties/constitutibleArtwork.js b/src/data/composite/wiki-properties/constitutibleArtwork.js
new file mode 100644
index 00000000..e0f0f521
--- /dev/null
+++ b/src/data/composite/wiki-properties/constitutibleArtwork.js
@@ -0,0 +1,67 @@
+import {input, templateCompositeFrom} from '#composite';
+import {isContributionList, isDate, validateThing} from '#validators';
+
+import {exitWithoutDependency, exposeDependency, exposeUpdateValueOrContinue}
+  from '#composite/control-flow';
+import {withConstitutedArtwork} from '#composite/wiki-data';
+
+export default templateCompositeFrom({
+  annotation: `constitutibleArtwork`,
+
+  compose: false,
+
+  inputs: {
+    contribs: input.staticDependency({
+      validate: isContributionList,
+      acceptsNull: true,
+    }),
+
+    date: input.staticDependency({
+      validate: isDate,
+      acceptsNull: true,
+    }),
+
+    artistProperty: input.staticValue({
+      type: 'string',
+    }),
+  },
+
+  steps: () => [
+    exposeUpdateValueOrContinue({
+      validate: input.value(
+        validateThing({
+          referenceType: 'artwork',
+        })),
+    }),
+
+    exitWithoutDependency({
+      dependency: input('contribs'),
+      value: input.value(null),
+    }),
+
+    {
+      dependencies: [
+        input.staticDependency('contribs'),
+        input.staticDependency('date'),
+      ],
+
+      compute: (continuation, {
+        [input.staticDependency('contribs')]: contribsProperty,
+        [input.staticDependency('date')]: dateProperty,
+      }) => continuation({
+        ['#contribsProperty']: contribsProperty,
+        ['#dateProperty']: dateProperty,
+      })
+    },
+
+    withConstitutedArtwork({
+      contribsProperty: '#contribsProperty',
+      artistProperty: input('artistProperty'),
+      dateProperty: '#dateProperty',
+    }),
+
+    exposeDependency({
+      dependency: '#constitutedArtwork',
+    }),
+  ],
+});
diff --git a/src/data/composite/wiki-properties/index.js b/src/data/composite/wiki-properties/index.js
index 4aaaeb72..7583630d 100644
--- a/src/data/composite/wiki-properties/index.js
+++ b/src/data/composite/wiki-properties/index.js
@@ -9,6 +9,7 @@ export {default as annotatedReferenceList} from './annotatedReferenceList.js';
 export {default as color} from './color.js';
 export {default as commentary} from './commentary.js';
 export {default as commentatorArtists} from './commentatorArtists.js';
+export {default as constitutibleArtwork} from './constitutibleArtwork.js';
 export {default as contentString} from './contentString.js';
 export {default as contribsPresent} from './contribsPresent.js';
 export {default as contributionList} from './contributionList.js';