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 { Subscription } from 'rxjs'
   7 import { ActivatedRoute } from '@angular/router'
   8 import { VideoPlaylistService } from '@app/shared/video-playlist/video-playlist.service'
   9 import { VideoPlaylist } from '@app/shared/video-playlist/video-playlist.model'
  10 import { I18n } from '@ngx-translate/i18n-polyfill'
  11 import { CdkDragDrop } from '@angular/cdk/drag-drop'
  12 import { VideoPlaylistElement } from '@app/shared/video-playlist/video-playlist-element.model'
  13
  14 @Component({
  15   selector: 'my-account-video-playlist-elements',
  16   templateUrl: './my-account-video-playlist-elements.component.html',
  17   styleUrls: [ './my-account-video-playlist-elements.component.scss' ]
  18 })
  19 export class MyAccountVideoPlaylistElementsComponent implements OnInit, OnDestroy {
  20   playlistElements: VideoPlaylistElement[] = []
  21   playlist: VideoPlaylist
  22
  23   pagination: ComponentPagination = {
  24     currentPage: 1,
  25     itemsPerPage: 30,
  26     totalItems: null
  27   }
  28
  29   private videoPlaylistId: string | number
  30   private paramsSub: Subscription
  31
  32   constructor (
  33     private authService: AuthService,
  34     private serverService: ServerService,
  35     private notifier: Notifier,
  36     private confirmService: ConfirmService,
  37     private route: ActivatedRoute,
  38     private i18n: I18n,
  39     private videoPlaylistService: VideoPlaylistService
  40   ) {}
  41
  42   ngOnInit () {
  43     this.paramsSub = this.route.params.subscribe(routeParams => {
  44       this.videoPlaylistId = routeParams[ 'videoPlaylistId' ]
  45       this.loadElements()
  46
  47       this.loadPlaylistInfo()
  48     })
  49   }
  50
  51   ngOnDestroy () {
  52     if (this.paramsSub) this.paramsSub.unsubscribe()
  53   }
  54
  55   drop (event: CdkDragDrop<any>) {
  56     const previousIndex = event.previousIndex
  57     const newIndex = event.currentIndex
  58
  59     if (previousIndex === newIndex) return
  60
  61     const oldPosition = this.playlistElements[previousIndex].position
  62     let insertAfter = this.playlistElements[newIndex].position
  63
  64     if (oldPosition > insertAfter) insertAfter--
  65
  66     this.videoPlaylistService.reorderPlaylist(this.playlist.id, oldPosition, insertAfter)
  67       .subscribe(
  68         () => { /* nothing to do */ },
  69
  70         err => this.notifier.error(err.message)
  71       )
  72
  73     const element = this.playlistElements[previousIndex]
  74
  75     this.playlistElements.splice(previousIndex, 1)
  76     this.playlistElements.splice(newIndex, 0, element)
  77
  78     this.reorderClientPositions()
  79   }
  80
  81   onElementRemoved (element: VideoPlaylistElement) {
  82     this.playlistElements = this.playlistElements.filter(v => v.id !== element.id)
  83     this.reorderClientPositions()
  84   }
  85
  86   onNearOfBottom () {
  87     // Last page
  88     if (this.pagination.totalItems <= (this.pagination.currentPage * this.pagination.itemsPerPage)) return
  89
  90     this.pagination.currentPage += 1
  91     this.loadElements()
  92   }
  93
  94   trackByFn (index: number, elem: VideoPlaylistElement) {
  95     return elem.id
  96   }
  97
  98   private loadElements () {
  99     this.videoPlaylistService.getPlaylistVideos(this.videoPlaylistId, this.pagination)
 100         .subscribe(({ total, data }) => {
 101           this.playlistElements = this.playlistElements.concat(data)
 102           this.pagination.totalItems = total
 103         })
 104   }
 105
 106   private loadPlaylistInfo () {
 107     this.videoPlaylistService.getVideoPlaylist(this.videoPlaylistId)
 108       .subscribe(playlist => {
 109         this.playlist = playlist
 110       })
 111   }
 112
 113   private reorderClientPositions () {
 114     let i = 1
 115
 116     for (const element of this.playlistElements) {
 117       element.position = i
 118       i++
 119     }
 120   }
 121 }