4 files changed, 155 insertions, 35 deletions

diff --git a/src/data/composite/things/artwork/index.js b/src/data/composite/things/artwork/index.js
index 3693c10f..b5e5e167 100644
--- a/src/data/composite/things/artwork/index.js
+++ b/src/data/composite/things/artwork/index.js
@@ -1,5 +1,7 @@
+export {default as withArtTags} from './withArtTags.js';
 export {default as withAttachedArtwork} from './withAttachedArtwork.js';
 export {default as withContainingArtworkList} from './withContainingArtworkList.js';
+export {default as withContentWarningArtTags} from './withContentWarningArtTags.js';
 export {default as withContribsFromAttachedArtwork} from './withContribsFromAttachedArtwork.js';
 export {default as withDate} from './withDate.js';
 export {default as withPropertyFromAttachedArtwork} from './withPropertyFromAttachedArtwork.js';
diff --git a/src/data/composite/things/artwork/withArtTags.js b/src/data/composite/things/artwork/withArtTags.js
new file mode 100644
index 00000000..1fed3c31
--- /dev/null
+++ b/src/data/composite/things/artwork/withArtTags.js
@@ -0,0 +1,99 @@
+import {input, templateCompositeFrom} from '#composite';
+
+import {raiseOutputWithoutDependency, withResultOfAvailabilityCheck}
+  from '#composite/control-flow';
+import {withPropertyFromObject} from '#composite/data';
+import {withResolvedReferenceList} from '#composite/wiki-data';
+import {soupyFind} from '#composite/wiki-properties';
+
+import withPropertyFromAttachedArtwork
+  from './withPropertyFromAttachedArtwork.js';
+
+export default templateCompositeFrom({
+  annotation: `withArtTags`,
+
+  inputs: {
+    from: input({
+      type: 'array',
+      acceptsNull: true,
+      defaultDependency: 'artTags',
+    }),
+  },
+
+  outputs: ['#artTags'],
+
+  steps: () => [
+    withResolvedReferenceList({
+      list: input('from'),
+      find: soupyFind.input('artTag'),
+    }),
+
+    withResultOfAvailabilityCheck({
+      from: '#resolvedReferenceList',
+      mode: input.value('empty'),
+    }),
+
+    {
+      dependencies: ['#availability', '#resolvedReferenceList'],
+      compute: (continuation, {
+        ['#availability']: availability,
+        ['#resolvedReferenceList']: resolvedReferenceList,
+      }) =>
+        (availability
+          ? continuation.raiseOutput({
+              '#artTags': resolvedReferenceList,
+            })
+          : continuation()),
+    },
+
+    withPropertyFromAttachedArtwork({
+      property: input.value('artTags'),
+    }),
+
+    withResultOfAvailabilityCheck({
+      from: '#attachedArtwork.artTags',
+      mode: input.value('empty'),
+    }),
+
+    {
+      dependencies: ['#availability', '#attachedArtwork.artTags'],
+      compute: (continuation, {
+        ['#availability']: availability,
+        ['#attachedArtwork.artTags']: attachedArtworkArtTags,
+      }) =>
+        (availability
+          ? continuation.raiseOutput({
+              '#artTags': attachedArtworkArtTags,
+            })
+          : continuation()),
+    },
+
+    raiseOutputWithoutDependency({
+      dependency: 'artTagsFromThingProperty',
+      output: input.value({'#artTags': []}),
+    }),
+
+    withPropertyFromObject({
+      object: 'thing',
+      property: 'artTagsFromThingProperty',
+    }).outputs({
+      ['#value']: '#thing.artTags',
+    }),
+
+    withResultOfAvailabilityCheck({
+      from: '#thing.artTags',
+      mode: input.value('empty'),
+    }),
+
+    {
+      dependencies: ['#availability', '#thing.artTags'],
+      compute: (continuation, {
+        ['#availability']: availability,
+        ['#thing.artTags']: thingArtTags,
+      }) =>
+        (availability
+          ? continuation({'#artTags': thingArtTags})
+          : continuation({'#artTags': []})),
+    },
+  ],
+});
diff --git a/src/data/composite/things/artwork/withContentWarningArtTags.js b/src/data/composite/things/artwork/withContentWarningArtTags.js
new file mode 100644
index 00000000..4c07e837
--- /dev/null
+++ b/src/data/composite/things/artwork/withContentWarningArtTags.js
@@ -0,0 +1,27 @@
+import {input, templateCompositeFrom} from '#composite';
+
+import {withFilteredList, withPropertyFromList} from '#composite/data';
+
+import withArtTags from './withArtTags.js';
+
+export default templateCompositeFrom({
+  annotation: `withContentWarningArtTags`,
+
+  outputs: ['#contentWarningArtTags'],
+
+  steps: () => [
+    withArtTags(),
+
+    withPropertyFromList({
+      list: '#artTags',
+      property: input.value('isContentWarning'),
+    }),
+
+    withFilteredList({
+      list: '#artTags',
+      filter: '#artTags.isContentWarning',
+    }).outputs({
+      '#filteredList': '#contentWarningArtTags',
+    }),
+  ],
+});
diff --git a/src/data/things/artwork.js b/src/data/things/artwork.js
index 4aced874..c54bcced 100644
--- a/src/data/things/artwork.js
+++ b/src/data/things/artwork.js
@@ -25,7 +25,7 @@ import {
   parseDimensions,
 } from '#yaml';
 
-import {withPropertyFromObject} from '#composite/data';
+import {withPropertyFromList, withPropertyFromObject} from '#composite/data';
 
 import {
   exitWithoutDependency,
@@ -55,8 +55,10 @@ import {
 } from '#composite/wiki-properties';
 
 import {
+  withArtTags,
   withAttachedArtwork,
   withContainingArtworkList,
+  withContentWarningArtTags,
   withContribsFromAttachedArtwork,
   withPropertyFromAttachedArtwork,
   withDate,
@@ -209,47 +211,16 @@ export class Artwork extends Thing {
     artTagsFromThingProperty: simpleString(),
 
     artTags: [
-      withResolvedReferenceList({
-        list: input.updateValue({
+      withArtTags({
+        from: input.updateValue({
           validate:
             validateReferenceList(ArtTag[Thing.referenceType]),
         }),
-
-        find: soupyFind.input('artTag'),
-      }),
-
-      exposeDependencyOrContinue({
-        dependency: '#resolvedReferenceList',
-        mode: input.value('empty'),
-      }),
-
-      withPropertyFromAttachedArtwork({
-        property: input.value('artTags'),
-      }),
-
-      exposeDependencyOrContinue({
-        dependency: '#attachedArtwork.artTags',
-      }),
-
-      exitWithoutDependency({
-        dependency: 'artTagsFromThingProperty',
-        value: input.value([]),
-      }),
-
-      withPropertyFromObject({
-        object: 'thing',
-        property: 'artTagsFromThingProperty',
-      }).outputs({
-        ['#value']: '#artTags',
       }),
 
-      exposeDependencyOrContinue({
+      exposeDependency({
         dependency: '#artTags',
       }),
-
-      exposeConstant({
-        value: input.value([]),
-      }),
     ],
 
     referencedArtworksFromThingProperty: simpleString(),
@@ -392,6 +363,27 @@ export class Artwork extends Thing {
         value: input.value([]),
       }),
     ],
+
+    contentWarningArtTags: [
+      withContentWarningArtTags(),
+
+      exposeDependency({
+        dependency: '#contentWarningArtTags',
+      }),
+    ],
+
+    contentWarnings: [
+      withContentWarningArtTags(),
+
+      withPropertyFromList({
+        list: '#contentWarningArtTags',
+        property: input.value('name'),
+      }),
+
+      exposeDependency({
+        dependency: '#contentWarningArtTags.name',
+      }),
+    ],
   });
 
   static [Thing.yamlDocumentSpec] = {