1 files changed, 43 insertions, 0 deletions

diff --git a/client/src/app/shared/shared-main/video/video-chapters-edit.model.ts b/client/src/app/shared/shared-main/video/video-chapters-edit.model.ts
new file mode 100644
index 000000000..6d7496ed6
--- /dev/null
+++ b/client/src/app/shared/shared-main/video/video-chapters-edit.model.ts
@@ -0,0 +1,43 @@
+import { simpleObjectsDeepEqual, sortBy } from '@peertube/peertube-core-utils'
+import { VideoChapter } from '@peertube/peertube-models'
+
+export class VideoChaptersEdit {
+  private chaptersFromAPI: VideoChapter[] = []
+
+  private chapters: VideoChapter[]
+
+  loadFromAPI (chapters: VideoChapter[]) {
+    this.chapters = chapters || []
+
+    this.chaptersFromAPI = chapters
+  }
+
+  patch (values: { [ id: string ]: any }) {
+    const chapters = values.chapters || []
+
+    this.chapters = chapters.map((c: any) => {
+      return {
+        timecode: c.timecode || 0,
+        title: c.title
+      }
+    })
+  }
+
+  toFormPatch () {
+    return { chapters: this.chapters }
+  }
+
+  getChaptersForUpdate (): VideoChapter[] {
+    return this.chapters.filter(c => !!c.title)
+  }
+
+  hasDuplicateValues () {
+    const timecodes = this.chapters.map(c => c.timecode)
+
+    return new Set(timecodes).size !== this.chapters.length
+  }
+
+  shouldUpdateAPI () {
+    return simpleObjectsDeepEqual(sortBy(this.getChaptersForUpdate(), 'timecode'), this.chaptersFromAPI) !== true
+  }
+}