feat: show contained playlists under My videos (#5125)

* feat: show contained playlists under My videos

closes #4769

* refactor(server): remove unused types

* fixes after code review

* fix(client/video-miniature): add to playlist

* fix(server/user/me): shortUUID response

* Revert "fix(client/video-miniature): add to playlist"

This reverts commit f1a0412391c7e2370b87df2594c9fe3f39a40ddc.

* fix(client/PlaylistService): caching

* Revert "fix(server/user/me): shortUUID response"

This reverts commit e3f1ee4e335739b895bced938540c003df24af73.

* Fix fetching playlists

Co-authored-by: Chocobozzz <me@florianbigard.com>

2 files changed, 22 insertions, 7 deletions

diff --git a/client/src/app/+my-library/my-videos/my-videos.component.html b/client/src/app/+my-library/my-videos/my-videos.component.html
index 146dcf41e..995f6b75b 100644
--- a/client/src/app/+my-library/my-videos/my-videos.component.html
+++ b/client/src/app/+my-library/my-videos/my-videos.component.html
@@ -34,6 +34,7 @@
 </div>
 
 <my-videos-selection
+  [videosContainedInPlaylists]="videosContainedInPlaylists"
   [pagination]="pagination"
   [(selection)]="selection"
   [(videosModel)]="videos"
diff --git a/client/src/app/+my-library/my-videos/my-videos.component.ts b/client/src/app/+my-library/my-videos/my-videos.component.ts
index 3ff0ee248..f5262da86 100644
--- a/client/src/app/+my-library/my-videos/my-videos.component.ts
+++ b/client/src/app/+my-library/my-videos/my-videos.component.ts
@@ -1,10 +1,11 @@
+import { uniqBy } from 'lodash'
 import { concat, Observable } from 'rxjs'
 import { tap, toArray } from 'rxjs/operators'
 import { Component, OnInit, ViewChild } from '@angular/core'
 import { ActivatedRoute, Router } from '@angular/router'
 import { AuthService, ComponentPagination, ConfirmService, Notifier, ScreenService, ServerService, User } from '@app/core'
 import { DisableForReuseHook } from '@app/core/routing/disable-for-reuse-hook'
-import { prepareIcu, immutableAssign } from '@app/helpers'
+import { immutableAssign, prepareIcu } from '@app/helpers'
 import { AdvancedInputFilter } from '@app/shared/shared-forms'
 import { DropdownAction, Video, VideoService } from '@app/shared/shared-main'
 import { LiveStreamInformationComponent } from '@app/shared/shared-video-live'
@@ -14,7 +15,8 @@ import {
   VideoActionsDisplayType,
   VideosSelectionComponent
 } from '@app/shared/shared-video-miniature'
-import { VideoChannel, VideoSortField } from '@shared/models'
+import { VideoPlaylistService } from '@app/shared/shared-video-playlist'
+import { VideoChannel, VideoExistInPlaylist, VideosExistInPlaylists, VideoSortField } from '@shared/models'
 import { VideoChangeOwnershipComponent } from './modals/video-change-ownership.component'
 
 @Component({
@@ -26,6 +28,7 @@ export class MyVideosComponent implements OnInit, DisableForReuseHook {
   @ViewChild('videoChangeOwnershipModal', { static: true }) videoChangeOwnershipModal: VideoChangeOwnershipComponent
   @ViewChild('liveStreamInformationModal', { static: true }) liveStreamInformationModal: LiveStreamInformationComponent
 
+  videosContainedInPlaylists: VideosExistInPlaylists = {}
   titlePage: string
   selection: SelectionType = {}
   pagination: ComponentPagination = {
@@ -83,7 +86,8 @@ export class MyVideosComponent implements OnInit, DisableForReuseHook {
     protected notifier: Notifier,
     protected screenService: ScreenService,
     private confirmService: ConfirmService,
-    private videoService: VideoService
+    private videoService: VideoService,
+    private playlistService: VideoPlaylistService
   ) {
     this.titlePage = $localize`My videos`
   }
@@ -156,10 +160,20 @@ export class MyVideosComponent implements OnInit, DisableForReuseHook {
       sort: this.sort,
       userChannels: this.userChannels,
       search: this.search
-    })
-      .pipe(
-        tap(res => this.pagination.totalItems = res.total)
-      )
+    }).pipe(
+      tap(res => this.pagination.totalItems = res.total),
+      tap(({ data }) => this.fetchVideosContainedInPlaylists(data))
+    )
+  }
+
+  private fetchVideosContainedInPlaylists (videos: Video[]) {
+    this.playlistService.doVideosExistInPlaylist(videos.map(v => v.id))
+      .subscribe(result => {
+        this.videosContainedInPlaylists = Object.keys(result).reduce((acc, videoId) => ({
+          ...acc,
+          [videoId]: uniqBy(result[videoId], (p: VideoExistInPlaylist) => p.playlistId)
+        }), this.videosContainedInPlaylists)
+      })
   }
 
   async deleteSelectedVideos () {