import { debounceTime } from 'rxjs/operators'
import { OnDestroy, OnInit } from '@angular/core'
import { ActivatedRoute, Router } from '@angular/router'
import { fromEvent, Observable, Subscription } from 'rxjs'
import { AuthService } from '../../core/auth'
import { ComponentPagination } from '../rest/component-pagination.model'
import { VideoSortField } from './sort-field.type'
import { Video } from './video.model'
import { ScreenService } from '@app/shared/misc/screen.service'
import { MiniatureDisplayOptions, OwnerDisplayType } from '@app/shared/video/video-miniature.component'
import { Syndication } from '@app/shared/video/syndication.model'
import { Notifier, ServerService } from '@app/core'
import { DisableForReuseHook } from '@app/core/routing/disable-for-reuse-hook'
export abstract class AbstractVideoList implements OnInit, OnDestroy, DisableForReuseHook {
pagination: ComponentPagination = {
currentPage: 1,
itemsPerPage: 25,
totalItems: null
}
sort: VideoSortField = '-publishedAt'
categoryOneOf?: number
defaultSort: VideoSortField = '-publishedAt'
syndicationItems: Syndication[] = []
loadOnInit = true
videos: Video[] = []
ownerDisplayType: OwnerDisplayType = 'account'
displayModerationBlock = false
titleTooltip: string
displayVideoActions = true
disabled = false
displayOptions: MiniatureDisplayOptions = {
date: true,
views: true,
by: true,
privacyLabel: true,
privacyText: false,
state: false,
blacklistInfo: false
}
protected abstract notifier: Notifier
protected abstract authService: AuthService
protected abstract route: ActivatedRoute
protected abstract serverService: ServerService
protected abstract screenService: ScreenService
protected abstract router: Router
abstract titlePage: string
private resizeSubscription: Subscription
private angularState: number
abstract getVideosObservable (page: number): Observable<{ videos: Video[], totalVideos: number }>
abstract generateSyndicationList (): void
get user () {
return this.authService.getUser()
}
ngOnInit () {
// Subscribe to route changes
const routeParams = this.route.snapshot.queryParams
this.loadRouteParams(routeParams)
this.resizeSubscription = fromEvent(window, 'resize')
.pipe(debounceTime(500))
.subscribe(() => this.calcPageSizes())
this.calcPageSizes()
if (this.loadOnInit === true) this.loadMoreVideos()
}
ngOnDestroy () {
if (this.resizeSubscription) this.resizeSubscription.unsubscribe()
}
disableForReuse () {
this.disabled = true
}
enabledForReuse () {
this.disabled = false
}
videoById (index: number, video: Video) {
return video.id
}
onNearOfBottom () {
if (this.disabled) return
// Last page
if (this.pagination.totalItems <= (this.pagination.currentPage * this.pagination.itemsPerPage)) return
this.pagination.currentPage += 1
this.setScrollRouteParams()
this.loadMoreVideos()
}
loadMoreVideos () {
const observable = this.getVideosObservable(this.pagination.currentPage)
observable.subscribe(
({ videos, totalVideos }) => {
this.pagination.totalItems = totalVideos
this.videos = this.videos.concat(videos)
this.onMoreVideos()
},
error => this.notifier.error(error.message)
)
}
reloadVideos () {
this.pagination.currentPage = 1
this.videos = []
this.loadMoreVideos()
}
toggleModerationDisplay () {
throw new Error('toggleModerationDisplay is not implemented')
}
removeVideoFromArray (video: Video) {
this.videos = this.videos.filter(v => v.id !== video.id)
}
// On videos hook for children that want to do something
protected onMoreVideos () { /* empty */ }
protected loadRouteParams (routeParams: { [ key: string ]: any }) {
this.sort = routeParams[ 'sort' ] as VideoSortField || this.defaultSort
this.categoryOneOf = routeParams[ 'categoryOneOf' ]
this.angularState = routeParams[ 'a-state' ]
}
private calcPageSizes () {
if (this.screenService.isInMobileView()) {
this.pagination.itemsPerPage = 5
}
}
private setScrollRouteParams () {
// Already set
if (this.angularState) return
this.angularState = 42
const queryParams = {
'a-state': this.angularState,
categoryOneOf: this.categoryOneOf
}
let path = this.router.url
if (!path || path === '/') path = this.serverService.getConfig().instance.defaultClientRoute
this.router.navigate([ path ], { queryParams, replaceUrl: true, queryParamsHandling: 'merge' })
}
}