client/src/app/+my-library/my-video-playlists/my-video-playlist-elements.component.ts

   1 import { Subject, Subscription } from 'rxjs'
   2 import { CdkDragDrop } from '@angular/cdk/drag-drop'
   3 import { Component, OnDestroy, OnInit, ViewChild } from '@angular/core'
   4 import { ActivatedRoute, Router } from '@angular/router'
   5 import { ComponentPagination, ConfirmService, HooksService, Notifier, ScreenService } from '@app/core'
   6 import { DropdownAction } from '@app/shared/shared-main'
   7 import { VideoShareComponent } from '@app/shared/shared-share-modal'
   8 import { VideoPlaylist, VideoPlaylistElement, VideoPlaylistService } from '@app/shared/shared-video-playlist'
   9 import { VideoPlaylistType } from '@shared/models'
  10
  11 @Component({
  12   templateUrl: './my-video-playlist-elements.component.html',
  13   styleUrls: [ './my-video-playlist-elements.component.scss' ]
  14 })
  15 export class MyVideoPlaylistElementsComponent implements OnInit, OnDestroy {
  16   @ViewChild('videoShareModal') videoShareModal: VideoShareComponent
  17
  18   playlistElements: VideoPlaylistElement[] = []
  19   playlist: VideoPlaylist
  20
  21   playlistActions: DropdownAction<VideoPlaylist>[][] = []
  22
  23   pagination: ComponentPagination = {
  24     currentPage: 1,
  25     itemsPerPage: 10,
  26     totalItems: null
  27   }
  28
  29   onDataSubject = new Subject<any[]>()
  30
  31   private videoPlaylistId: string | number
  32   private paramsSub: Subscription
  33
  34   constructor (
  35     private hooks: HooksService,
  36     private notifier: Notifier,
  37     private router: Router,
  38     private confirmService: ConfirmService,
  39     private route: ActivatedRoute,
  40     private screenService: ScreenService,
  41     private videoPlaylistService: VideoPlaylistService
  42   ) {}
  43
  44   ngOnInit () {
  45     this.playlistActions = [
  46       [
  47         {
  48           label: $localize`Update playlist`,
  49           iconName: 'edit',
  50           linkBuilder: playlist => [ '/my-library', 'video-playlists', 'update', playlist.uuid ]
  51         },
  52         {
  53           label: $localize`Delete playlist`,
  54           iconName: 'delete',
  55           handler: playlist => this.deleteVideoPlaylist(playlist)
  56         }
  57       ]
  58     ]
  59
  60     this.paramsSub = this.route.params.subscribe(routeParams => {
  61       this.videoPlaylistId = routeParams['videoPlaylistId']
  62       this.loadElements()
  63
  64       this.loadPlaylistInfo()
  65     })
  66   }
  67
  68   ngOnDestroy () {
  69     if (this.paramsSub) this.paramsSub.unsubscribe()
  70   }
  71
  72   drop (event: CdkDragDrop<any>) {
  73     const previousIndex = event.previousIndex
  74     const newIndex = event.currentIndex
  75
  76     if (previousIndex === newIndex) return
  77
  78     const oldPosition = this.playlistElements[previousIndex].position
  79     let insertAfter = this.playlistElements[newIndex].position
  80
  81     if (oldPosition > insertAfter) insertAfter--
  82
  83     const element = this.playlistElements[previousIndex]
  84
  85     this.playlistElements.splice(previousIndex, 1)
  86     this.playlistElements.splice(newIndex, 0, element)
  87
  88     this.videoPlaylistService.reorderPlaylist(this.playlist.id, oldPosition, insertAfter)
  89       .subscribe({
  90         next: () => {
  91           this.reorderClientPositions()
  92         },
  93
  94         error: err => this.notifier.error(err.message)
  95       })
  96   }
  97
  98   onElementRemoved (element: VideoPlaylistElement) {
  99     const oldFirst = this.findFirst()
 100
 101     this.playlistElements = this.playlistElements.filter(v => v.id !== element.id)
 102     this.reorderClientPositions(oldFirst)
 103   }
 104
 105   onNearOfBottom () {
 106     // Last page
 107     if (this.pagination.totalItems <= (this.pagination.currentPage * this.pagination.itemsPerPage)) return
 108
 109     this.pagination.currentPage += 1
 110     this.loadElements()
 111   }
 112
 113   trackByFn (index: number, elem: VideoPlaylistElement) {
 114     return elem.id
 115   }
 116
 117   isRegularPlaylist (playlist: VideoPlaylist) {
 118     return playlist?.type.id === VideoPlaylistType.REGULAR
 119   }
 120
 121   showShareModal () {
 122     this.videoShareModal.show()
 123   }
 124
 125   async deleteVideoPlaylist (videoPlaylist: VideoPlaylist) {
 126     const res = await this.confirmService.confirm(
 127       $localize`Do you really want to delete ${videoPlaylist.displayName}?`,
 128       $localize`Delete`
 129     )
 130     if (res === false) return
 131
 132     this.videoPlaylistService.removeVideoPlaylist(videoPlaylist)
 133       .subscribe({
 134         next: () => {
 135           this.router.navigate([ '/my-library', 'video-playlists' ])
 136           this.notifier.success($localize`Playlist ${videoPlaylist.displayName} deleted.`)
 137         },
 138
 139         error: err => this.notifier.error(err.message)
 140       })
 141   }
 142
 143   /**
 144    * Returns null to not have drag and drop delay.
 145    * In small views, where elements are about 100% wide,
 146    * we add a delay to prevent unwanted drag&drop.
 147    *
 148    * @see {@link https://github.com/Chocobozzz/PeerTube/issues/2078}
 149    */
 150   getDragStartDelay (): null | number {
 151     if (this.screenService.isInTouchScreen()) {
 152       return 500
 153     }
 154
 155     return null
 156   }
 157
 158   private loadElements () {
 159     this.hooks.wrapObsFun(
 160       this.videoPlaylistService.getPlaylistVideos.bind(this.videoPlaylistService),
 161       { videoPlaylistId: this.videoPlaylistId, componentPagination: this.pagination },
 162       'my-library',
 163       'filter:api.my-library.video-playlist-elements.list.params',
 164       'filter:api.my-library.video-playlist-elements.list.result'
 165     )
 166         .subscribe(({ total, data }) => {
 167           this.playlistElements = this.playlistElements.concat(data)
 168           this.pagination.totalItems = total
 169
 170           this.onDataSubject.next(data)
 171         })
 172   }
 173
 174   private loadPlaylistInfo () {
 175     this.videoPlaylistService.getVideoPlaylist(this.videoPlaylistId)
 176       .subscribe(playlist => {
 177         this.playlist = playlist
 178       })
 179   }
 180
 181   private reorderClientPositions (first?: VideoPlaylistElement) {
 182     if (this.playlistElements.length === 0) return
 183
 184     const oldFirst = first || this.findFirst()
 185     let i = 1
 186
 187     for (const element of this.playlistElements) {
 188       element.position = i
 189       i++
 190     }
 191
 192     // Reload playlist thumbnail if the first element changed
 193     const newFirst = this.findFirst()
 194     if (oldFirst && newFirst && oldFirst.id !== newFirst.id) {
 195       this.loadPlaylistInfo()
 196     }
 197   }
 198
 199   private findFirst () {
 200     return this.playlistElements.find(e => e.position === 1)
 201   }
 202 }