Store album title as 'dc:relation.isPartOf'

CHANGELOG.md

@@ -38,8 +38,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
     _MediaPreviews_ type in the
     [app/support/media-files/types.ts](app/support/media-files/types.ts) file.
   - `meta`: JSON object with temporary or not essential media metadata. It can
-    contain the audio/video title and author name (in 'dc:title' and
-    'dc:creator' fields, respectively) and some special flags:
+    contain the audio/video title, album title and author name (in 'dc:title',
+    'dc:relation.isPartOf' and 'dc:creator' fields, respectively) and some
+    special flags:
     - `animatedImage`: true if the video was created from an animated image
     - `silent`: true if the video has no audio track
     - `inProgress`: true if the media file is currently being processed

app/support/media-files/process.ts

@@ -72,12 +72,22 @@ export async function processMediaFile(
   if (info.type === 'audio' || info.type === 'video') {
     commonResult.duration = info.duration;
 
-    if (info.tags?.title) {
-      commonResult.meta!['dc:title'] = info.tags.title;
-    }
+    if (info.tags) {
+      const title = getKeyCaseInsensitive(info.tags, 'title');
+      const artist = getKeyCaseInsensitive(info.tags, 'artist');
+      const album = getKeyCaseInsensitive(info.tags, 'album');
+
+      if (title) {
+        commonResult.meta!['dc:title'] = title;
+      }
+
+      if (artist) {
+        commonResult.meta!['dc:creator'] = artist;
+      }
 
-    if (info.tags?.artist) {
-      commonResult.meta!['dc:creator'] = info.tags.artist;
+      if (album) {
+        commonResult.meta!['dc:relation.isPartOf'] = album;
+      }
     }
   }
 
@@ -513,3 +523,12 @@ async function fileProps(filePath: string, origFileName: string, ext: string): P
     mimeType: mimeLookup(ext) || 'application/octet-stream',
   };
 }
+
+/**
+ * Get a key in a case-insensitive way
+ */
+function getKeyCaseInsensitive(obj: Record<string, string>, key: string): string | undefined {
+  key = key.toLowerCase();
+  const realKey = Object.keys(obj).find((k) => k.toLowerCase() === key);
+  return realKey ? obj[realKey] : undefined;
+}

test/functional/attachments.js

@@ -253,6 +253,7 @@ describe('Attachments', () => {
       meta: {
         'dc:title': 'Improvisation with Sopranino Recorder',
         'dc:creator': 'Piermic',
+        'dc:relation.isPartOf': 'Wikimedia',
       },
       duration: 24.032653,
       createdAt: attObj.createdAt.toISOString(),

test/integration/models/attachment.js

@@ -252,6 +252,7 @@ describe('Attachments', () => {
     expect(att.meta, 'to equal', {
       'dc:title': 'Improvisation with Sopranino Recorder',
       'dc:creator': 'Piermic',
+      'dc:relation.isPartOf': 'Wikimedia',
     });
   });