feat: Read previews information from new DAV endpoint

Signed-off-by: Carl Schwan <[email protected]>

Author: Carl Schwan

apps/files/src/components/FileEntry/FileEntryPreview.vue

@@ -52,7 +52,7 @@
 <script lang="ts">
 import type { Node } from '@nextcloud/files'
 import type { PropType } from 'vue'
-import type { UserConfig } from '../../types.ts'
+import type { UserConfig, PreviewMetadata } from '../../types.ts'
 
 import { FileType } from '@nextcloud/files'
 import { translate as t } from '@nextcloud/l10n'
@@ -164,6 +164,14 @@ export default defineComponent({
 				return url.href
 			}
 
+			if (this.source.attributes['preview-metadata']) {
+				let metadata: PreviewMetadata[] = JSON.parse(this.source.attributes['preview-metadata'])
+				metadata = metadata.filter((preview) => preview.height <= 256 && this.cropPreviews === preview.cropped && preview.preview_url)
+				if (metadata.length > 0) {
+					return metadata[0]?.preview_url;
+				}
+			}
+
 			try {
 				const previewUrl = this.source.attributes.previewUrl
 					|| (this.isPublic

apps/files/src/init.ts

@@ -75,5 +75,8 @@ registerPreviewServiceWorker()
 registerDavProperty('nc:hidden', { nc: 'http://nextcloud.org/ns' })
 registerDavProperty('nc:is-mount-root', { nc: 'http://nextcloud.org/ns' })
 registerDavProperty('nc:metadata-blurhash', { nc: 'http://nextcloud.org/ns' })
+registerDavProperty('nc:preview-metadata', { nc: 'http://nextcloud.org/ns' })
+registerDavProperty('nc:download-url-expiration', { nc: 'http://nextcloud.org/ns' })
+registerDavProperty('oc:downloadURL', { oc: 'http://owncloud.org/ns' })
 
 initLivePhotos()

apps/files/src/types.ts

@@ -147,3 +147,11 @@ export type Capabilities = {
 		versioning: boolean
 	}
 }
+
+export type PreviewMetadata = {
+	width: int,
+	height: int,
+	cropped: boolean,
+	preview_url: string | null,
+	preview_url_expiration: int | null,
+}