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import { Subscription } from 'rxjs'
import { first, switchMap } from 'rxjs/operators'
import { Component, ComponentFactoryResolver, Injector, OnDestroy, OnInit } from '@angular/core'
import { ActivatedRoute, Params, Router } from '@angular/router'
import { AuthService, LocalStorageService, Notifier, RedirectService, ScreenService, ServerService, UserService } from '@app/core'
import { HooksService } from '@app/core/plugins/hooks.service'
import { immutableAssign } from '@app/helpers'
import { VideoService } from '@app/shared/shared-main'
import { AbstractVideoList } from '@app/shared/shared-video-miniature'
import { VideoSortField } from '@shared/models'
import { VideoTrendingHeaderComponent } from './video-trending-header.component'
@Component({
selector: 'my-videos-hot',
styleUrls: [ '../../../shared/shared-video-miniature/abstract-video-list.scss' ],
templateUrl: '../../../shared/shared-video-miniature/abstract-video-list.html'
})
export class VideoTrendingComponent extends AbstractVideoList implements OnInit, OnDestroy {
HeaderComponent = VideoTrendingHeaderComponent
titlePage: string
defaultSort: VideoSortField = '-trending'
loadUserVideoPreferences = true
private algorithmChangeSub: Subscription
constructor (
protected router: Router,
protected serverService: ServerService,
protected route: ActivatedRoute,
protected notifier: Notifier,
protected authService: AuthService,
protected userService: UserService,
protected screenService: ScreenService,
protected storageService: LocalStorageService,
protected cfr: ComponentFactoryResolver,
private videoService: VideoService,
private redirectService: RedirectService,
private hooks: HooksService
) {
super()
this.defaultSort = this.parseAlgorithm(this.redirectService.getDefaultTrendingAlgorithm())
this.headerComponentInjector = this.getInjector()
}
ngOnInit () {
super.ngOnInit()
this.generateSyndicationList()
// Subscribe to alg change after we loaded the data
// The initial alg load is handled by the parent class
this.algorithmChangeSub = this.onDataSubject
.pipe(
first(),
switchMap(() => this.route.queryParams)
).subscribe(queryParams => {
const oldSort = this.sort
this.loadPageRouteParams(queryParams)
if (oldSort !== this.sort) this.reloadVideos()
}
)
}
ngOnDestroy () {
super.ngOnDestroy()
if (this.algorithmChangeSub) this.algorithmChangeSub.unsubscribe()
}
getVideosObservable (page: number) {
const newPagination = immutableAssign(this.pagination, { currentPage: page })
const params = {
videoPagination: newPagination,
sort: this.sort,
categoryOneOf: this.categoryOneOf,
languageOneOf: this.languageOneOf,
nsfwPolicy: this.nsfwPolicy,
skipCount: true
}
return this.hooks.wrapObsFun(
this.videoService.getVideos.bind(this.videoService),
params,
'common',
'filter:api.trending-videos.videos.list.params',
'filter:api.trending-videos.videos.list.result'
)
}
generateSyndicationList () {
this.syndicationItems = this.videoService.getVideoFeedUrls(this.sort, undefined, this.categoryOneOf)
}
getInjector () {
return Injector.create({
providers: [{
provide: 'data',
useValue: {
model: this.defaultSort
}
}]
})
}
protected loadPageRouteParams (queryParams: Params) {
const algorithm = queryParams['alg'] || this.redirectService.getDefaultTrendingAlgorithm()
this.sort = this.parseAlgorithm(algorithm)
}
private parseAlgorithm (algorithm: string): VideoSortField {
switch (algorithm) {
case 'most-viewed':
return '-trending'
case 'most-liked':
return '-likes'
default:
return '-' + algorithm as VideoSortField
}
}
}
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