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

   1 import { Component, OnDestroy, OnInit } from '@angular/core'
   2 import { Notifier, ServerService } from '@app/core'
   3 import { AuthService } from '../../core/auth'
   4 import { ConfirmService } from '../../core/confirm'
   5 import { ComponentPagination } from '@app/shared/rest/component-pagination.model'
   6 import { Video } from '@app/shared/video/video.model'
   7 import { Subject, Subscription } from 'rxjs'
   8 import { ActivatedRoute } from '@angular/router'
   9 import { VideoService } from '@app/shared/video/video.service'
  10 import { VideoPlaylistService } from '@app/shared/video-playlist/video-playlist.service'
  11 import { VideoPlaylist } from '@app/shared/video-playlist/video-playlist.model'
  12 import { I18n } from '@ngx-translate/i18n-polyfill'
  13 import { CdkDragDrop, CdkDragMove } from '@angular/cdk/drag-drop'
  14 import { throttleTime } from 'rxjs/operators'
  15
  16 @Component({
  17   selector: 'my-account-video-playlist-elements',
  18   templateUrl: './my-account-video-playlist-elements.component.html',
  19   styleUrls: [ './my-account-video-playlist-elements.component.scss' ]
  20 })
  21 export class MyAccountVideoPlaylistElementsComponent implements OnInit, OnDestroy {
  22   videos: Video[] = []
  23   playlist: VideoPlaylist
  24
  25   pagination: ComponentPagination = {
  26     currentPage: 1,
  27     itemsPerPage: 30,
  28     totalItems: null
  29   }
  30
  31   private videoPlaylistId: string | number
  32   private paramsSub: Subscription
  33   private dragMoveSubject = new Subject<number>()
  34
  35   constructor (
  36     private authService: AuthService,
  37     private serverService: ServerService,
  38     private notifier: Notifier,
  39     private confirmService: ConfirmService,
  40     private route: ActivatedRoute,
  41     private i18n: I18n,
  42     private videoService: VideoService,
  43     private videoPlaylistService: VideoPlaylistService
  44   ) {}
  45
  46   ngOnInit () {
  47     this.paramsSub = this.route.params.subscribe(routeParams => {
  48       this.videoPlaylistId = routeParams[ 'videoPlaylistId' ]
  49       this.loadElements()
  50
  51       this.loadPlaylistInfo()
  52     })
  53
  54     this.dragMoveSubject.asObservable()
  55       .pipe(throttleTime(200))
  56       .subscribe(y => this.checkScroll(y))
  57   }
  58
  59   ngOnDestroy () {
  60     if (this.paramsSub) this.paramsSub.unsubscribe()
  61   }
  62
  63   drop (event: CdkDragDrop<any>) {
  64     const previousIndex = event.previousIndex
  65     const newIndex = event.currentIndex
  66
  67     if (previousIndex === newIndex) return
  68
  69     const oldPosition = this.videos[previousIndex].playlistElement.position
  70     let insertAfter = this.videos[newIndex].playlistElement.position
  71
  72     if (oldPosition > insertAfter) insertAfter--
  73
  74     this.videoPlaylistService.reorderPlaylist(this.playlist.id, oldPosition, insertAfter)
  75       .subscribe(
  76         () => { /* nothing to do */ },
  77
  78         err => this.notifier.error(err.message)
  79       )
  80
  81     const video = this.videos[previousIndex]
  82
  83     this.videos.splice(previousIndex, 1)
  84     this.videos.splice(newIndex, 0, video)
  85
  86     this.reorderClientPositions()
  87   }
  88
  89   onDragMove (event: CdkDragMove<any>) {
  90     this.dragMoveSubject.next(event.pointerPosition.y)
  91   }
  92
  93   checkScroll (pointerY: number) {
  94     // FIXME: Uncomment when https://github.com/angular/material2/issues/14098 is fixed
  95     // FIXME: Remove when https://github.com/angular/material2/issues/13588 is implemented
  96     // if (pointerY < 150) {
  97     //   window.scrollBy({
  98     //     left: 0,
  99     //     top: -20,
 100     //     behavior: 'smooth'
 101     //   })
 102     //
 103     //   return
 104     // }
 105     //
 106     // if (window.innerHeight - pointerY <= 50) {
 107     //   window.scrollBy({
 108     //     left: 0,
 109     //     top: 20,
 110     //     behavior: 'smooth'
 111     //   })
 112     // }
 113   }
 114
 115   onElementRemoved (video: Video) {
 116     this.videos = this.videos.filter(v => v.id !== video.id)
 117     this.reorderClientPositions()
 118   }
 119
 120   onNearOfBottom () {
 121     // Last page
 122     if (this.pagination.totalItems <= (this.pagination.currentPage * this.pagination.itemsPerPage)) return
 123
 124     this.pagination.currentPage += 1
 125     this.loadElements()
 126   }
 127
 128   trackByFn (index: number, elem: Video) {
 129     return elem.id
 130   }
 131
 132   private loadElements () {
 133     this.videoService.getPlaylistVideos(this.videoPlaylistId, this.pagination)
 134         .subscribe(({ totalVideos, videos }) => {
 135           this.videos = this.videos.concat(videos)
 136           this.pagination.totalItems = totalVideos
 137         })
 138   }
 139
 140   private loadPlaylistInfo () {
 141     this.videoPlaylistService.getVideoPlaylist(this.videoPlaylistId)
 142       .subscribe(playlist => {
 143         this.playlist = playlist
 144       })
 145   }
 146
 147   private reorderClientPositions () {
 148     let i = 1
 149
 150     for (const video of this.videos) {
 151       video.playlistElement.position = i
 152       i++
 153     }
 154   }
 155 }