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, 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 notifier: Notifier,
  36     private router: Router,
  37     private confirmService: ConfirmService,
  38     private route: ActivatedRoute,
  39     private screenService: ScreenService,
  40     private videoPlaylistService: VideoPlaylistService
  41   ) {}
  42
  43   ngOnInit () {
  44     this.playlistActions = [
  45       [
  46         {
  47           label: $localize`Update playlist`,
  48           iconName: 'edit',
  49           linkBuilder: playlist => [ '/my-library', 'video-playlists', 'update', playlist.uuid ]
  50         },
  51         {
  52           label: $localize`Delete playlist`,
  53           iconName: 'delete',
  54           handler: playlist => this.deleteVideoPlaylist(playlist)
  55         }
  56       ]
  57     ]
  58
  59     this.paramsSub = this.route.params.subscribe(routeParams => {
  60       this.videoPlaylistId = routeParams[ 'videoPlaylistId' ]
  61       this.loadElements()
  62
  63       this.loadPlaylistInfo()
  64     })
  65   }
  66
  67   ngOnDestroy () {
  68     if (this.paramsSub) this.paramsSub.unsubscribe()
  69   }
  70
  71   drop (event: CdkDragDrop<any>) {
  72     const previousIndex = event.previousIndex
  73     const newIndex = event.currentIndex
  74
  75     if (previousIndex === newIndex) return
  76
  77     const oldPosition = this.playlistElements[previousIndex].position
  78     let insertAfter = this.playlistElements[newIndex].position
  79
  80     if (oldPosition > insertAfter) insertAfter--
  81
  82     const element = this.playlistElements[previousIndex]
  83
  84     this.playlistElements.splice(previousIndex, 1)
  85     this.playlistElements.splice(newIndex, 0, element)
  86
  87     this.videoPlaylistService.reorderPlaylist(this.playlist.id, oldPosition, insertAfter)
  88       .subscribe(
  89         () => {
  90           this.reorderClientPositions()
  91         },
  92
  93         err => this.notifier.error(err.message)
  94       )
  95   }
  96
  97   onElementRemoved (element: VideoPlaylistElement) {
  98     const oldFirst = this.findFirst()
  99
 100     this.playlistElements = this.playlistElements.filter(v => v.id !== element.id)
 101     this.reorderClientPositions(oldFirst)
 102   }
 103
 104   onNearOfBottom () {
 105     // Last page
 106     if (this.pagination.totalItems <= (this.pagination.currentPage * this.pagination.itemsPerPage)) return
 107
 108     this.pagination.currentPage += 1
 109     this.loadElements()
 110   }
 111
 112   trackByFn (index: number, elem: VideoPlaylistElement) {
 113     return elem.id
 114   }
 115
 116   isRegularPlaylist (playlist: VideoPlaylist) {
 117     return playlist?.type.id === VideoPlaylistType.REGULAR
 118   }
 119
 120   showShareModal () {
 121     this.videoShareModal.show()
 122   }
 123
 124   async deleteVideoPlaylist (videoPlaylist: VideoPlaylist) {
 125     const res = await this.confirmService.confirm(
 126       $localize`Do you really want to delete ${videoPlaylist.displayName}?`,
 127       $localize`Delete`
 128     )
 129     if (res === false) return
 130
 131     this.videoPlaylistService.removeVideoPlaylist(videoPlaylist)
 132       .subscribe(
 133         () => {
 134           this.router.navigate([ '/my-library', 'video-playlists' ])
 135           this.notifier.success($localize`Playlist ${videoPlaylist.displayName} deleted.`)
 136         },
 137
 138         error => this.notifier.error(error.message)
 139       )
 140   }
 141
 142   /**
 143    * Returns null to not have drag and drop delay.
 144    * In small views, where elements are about 100% wide,
 145    * we add a delay to prevent unwanted drag&drop.
 146    *
 147    * @see {@link https://github.com/Chocobozzz/PeerTube/issues/2078}
 148    *
 149    * @returns {null|number} Null for no delay, or a number in milliseconds.
 150    */
 151   getDragStartDelay (): null | number {
 152     if (this.screenService.isInTouchScreen()) {
 153       return 500
 154     }
 155
 156     return null
 157   }
 158
 159   private loadElements () {
 160     this.videoPlaylistService.getPlaylistVideos(this.videoPlaylistId, this.pagination)
 161         .subscribe(({ total, data }) => {
 162           this.playlistElements = this.playlistElements.concat(data)
 163           this.pagination.totalItems = total
 164
 165           this.onDataSubject.next(data)
 166         })
 167   }
 168
 169   private loadPlaylistInfo () {
 170     this.videoPlaylistService.getVideoPlaylist(this.videoPlaylistId)
 171       .subscribe(playlist => {
 172         this.playlist = playlist
 173       })
 174   }
 175
 176   private reorderClientPositions (first?: VideoPlaylistElement) {
 177     if (this.playlistElements.length === 0) return
 178
 179     const oldFirst = first || this.findFirst()
 180     let i = 1
 181
 182     for (const element of this.playlistElements) {
 183       element.position = i
 184       i++
 185     }
 186
 187     // Reload playlist thumbnail if the first element changed
 188     const newFirst = this.findFirst()
 189     if (oldFirst && newFirst && oldFirst.id !== newFirst.id) {
 190       this.playlist.refreshThumbnail()
 191     }
 192   }
 193
 194   private findFirst () {
 195     return this.playlistElements.find(e => e.position === 1)
 196   }
 197 }