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import { Component, OnDestroy, OnInit } from '@angular/core'
import { Notifier, ServerService } from '@app/core'
import { AuthService } from '../../core/auth'
import { ConfirmService } from '../../core/confirm'
import { ComponentPagination } from '@app/shared/rest/component-pagination.model'
import { Subject, Subscription } from 'rxjs'
import { ActivatedRoute } from '@angular/router'
import { VideoPlaylistService } from '@app/shared/video-playlist/video-playlist.service'
import { VideoPlaylist } from '@app/shared/video-playlist/video-playlist.model'
import { I18n } from '@ngx-translate/i18n-polyfill'
import { CdkDragDrop } from '@angular/cdk/drag-drop'
import { VideoPlaylistElement } from '@app/shared/video-playlist/video-playlist-element.model'
@Component({
selector: 'my-account-video-playlist-elements',
templateUrl: './my-account-video-playlist-elements.component.html',
styleUrls: [ './my-account-video-playlist-elements.component.scss' ]
})
export class MyAccountVideoPlaylistElementsComponent implements OnInit, OnDestroy {
playlistElements: VideoPlaylistElement[] = []
playlist: VideoPlaylist
pagination: ComponentPagination = {
currentPage: 1,
itemsPerPage: 10,
totalItems: null
}
onDataSubject = new Subject<any[]>()
private videoPlaylistId: string | number
private paramsSub: Subscription
constructor (
private authService: AuthService,
private serverService: ServerService,
private notifier: Notifier,
private confirmService: ConfirmService,
private route: ActivatedRoute,
private i18n: I18n,
private videoPlaylistService: VideoPlaylistService
) {}
ngOnInit () {
this.paramsSub = this.route.params.subscribe(routeParams => {
this.videoPlaylistId = routeParams[ 'videoPlaylistId' ]
this.loadElements()
this.loadPlaylistInfo()
})
}
ngOnDestroy () {
if (this.paramsSub) this.paramsSub.unsubscribe()
}
drop (event: CdkDragDrop<any>) {
const previousIndex = event.previousIndex
const newIndex = event.currentIndex
if (previousIndex === newIndex) return
const oldPosition = this.playlistElements[previousIndex].position
let insertAfter = this.playlistElements[newIndex].position
if (oldPosition > insertAfter) insertAfter--
const element = this.playlistElements[previousIndex]
this.playlistElements.splice(previousIndex, 1)
this.playlistElements.splice(newIndex, 0, element)
this.videoPlaylistService.reorderPlaylist(this.playlist.id, oldPosition, insertAfter)
.subscribe(
() => {
this.reorderClientPositions()
},
err => this.notifier.error(err.message)
)
}
onElementRemoved (element: VideoPlaylistElement) {
const oldFirst = this.findFirst()
this.playlistElements = this.playlistElements.filter(v => v.id !== element.id)
this.reorderClientPositions(oldFirst)
}
onNearOfBottom () {
// Last page
if (this.pagination.totalItems <= (this.pagination.currentPage * this.pagination.itemsPerPage)) return
this.pagination.currentPage += 1
this.loadElements()
}
trackByFn (index: number, elem: VideoPlaylistElement) {
return elem.id
}
private loadElements () {
this.videoPlaylistService.getPlaylistVideos(this.videoPlaylistId, this.pagination)
.subscribe(({ total, data }) => {
this.playlistElements = this.playlistElements.concat(data)
this.pagination.totalItems = total
this.onDataSubject.next(data)
})
}
private loadPlaylistInfo () {
this.videoPlaylistService.getVideoPlaylist(this.videoPlaylistId)
.subscribe(playlist => {
this.playlist = playlist
})
}
private reorderClientPositions (first?: VideoPlaylistElement) {
if (this.playlistElements.length === 0) return
const oldFirst = first || this.findFirst()
let i = 1
for (const element of this.playlistElements) {
element.position = i
i++
}
// Reload playlist thumbnail if the first element changed
const newFirst = this.findFirst()
if (oldFirst && newFirst && oldFirst.id !== newFirst.id) {
this.playlist.refreshThumbnail()
}
}
private findFirst () {
return this.playlistElements.find(e => e.position === 1)
}
}
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