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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 { Video } from '@app/shared/video/video.model'
import { Subject, Subscription } from 'rxjs'
import { ActivatedRoute } from '@angular/router'
import { VideoService } from '@app/shared/video/video.service'
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, CdkDragMove } from '@angular/cdk/drag-drop'
import { throttleTime } from 'rxjs/operators'
@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 {
videos: Video[] = []
playlist: VideoPlaylist
pagination: ComponentPagination = {
currentPage: 1,
itemsPerPage: 10,
totalItems: null
}
private videoPlaylistId: string | number
private paramsSub: Subscription
private dragMoveSubject = new Subject<number>()
constructor (
private authService: AuthService,
private serverService: ServerService,
private notifier: Notifier,
private confirmService: ConfirmService,
private route: ActivatedRoute,
private i18n: I18n,
private videoService: VideoService,
private videoPlaylistService: VideoPlaylistService
) {}
ngOnInit () {
this.paramsSub = this.route.params.subscribe(routeParams => {
this.videoPlaylistId = routeParams[ 'videoPlaylistId' ]
this.loadElements()
this.loadPlaylistInfo()
})
this.dragMoveSubject.asObservable()
.pipe(throttleTime(200))
.subscribe(y => this.checkScroll(y))
}
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.videos[previousIndex].playlistElement.position
const insertAfter = newIndex === 0 ? 0 : this.videos[newIndex].playlistElement.position
this.videoPlaylistService.reorderPlaylist(this.playlist.id, oldPosition, insertAfter)
.subscribe(
() => { /* nothing to do */ },
err => this.notifier.error(err.message)
)
const video = this.videos[previousIndex]
this.videos.splice(previousIndex, 1)
this.videos.splice(newIndex, 0, video)
this.reorderClientPositions()
}
onDragMove (event: CdkDragMove<any>) {
this.dragMoveSubject.next(event.pointerPosition.y)
}
checkScroll (pointerY: number) {
// FIXME: Uncomment when https://github.com/angular/material2/issues/14098 is fixed
// FIXME: Remove when https://github.com/angular/material2/issues/13588 is implemented
// if (pointerY < 150) {
// window.scrollBy({
// left: 0,
// top: -20,
// behavior: 'smooth'
// })
//
// return
// }
//
// if (window.innerHeight - pointerY <= 50) {
// window.scrollBy({
// left: 0,
// top: 20,
// behavior: 'smooth'
// })
// }
}
onElementRemoved (video: Video) {
this.videos = this.videos.filter(v => v.id !== video.id)
this.reorderClientPositions()
}
onNearOfBottom () {
// Last page
if (this.pagination.totalItems <= (this.pagination.currentPage * this.pagination.itemsPerPage)) return
this.pagination.currentPage += 1
this.loadElements()
}
private loadElements () {
this.videoService.getPlaylistVideos(this.videoPlaylistId, this.pagination)
.subscribe(({ totalVideos, videos }) => {
this.videos = this.videos.concat(videos)
this.pagination.totalItems = totalVideos
})
}
private loadPlaylistInfo () {
this.videoPlaylistService.getVideoPlaylist(this.videoPlaylistId)
.subscribe(playlist => {
this.playlist = playlist
})
}
private reorderClientPositions () {
let i = 1
for (const video of this.videos) {
video.playlistElement.position = i
i++
}
}
}
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