client/src/app/shared/overview/overview.service.ts

   1 import { catchError, map, switchMap, tap } from 'rxjs/operators'
   2 import { HttpClient } from '@angular/common/http'
   3 import { Injectable } from '@angular/core'
   4 import { forkJoin, Observable, of } from 'rxjs'
   5 import { VideosOverview as VideosOverviewServer, peertubeTranslate } from '../../../../../shared/models'
   6 import { environment } from '../../../environments/environment'
   7 import { RestExtractor } from '../rest/rest-extractor.service'
   8 import { VideosOverview } from '@app/shared/overview/videos-overview.model'
   9 import { VideoService } from '@app/shared/video/video.service'
  10 import { ServerService } from '@app/core'
  11 import { immutableAssign } from '@app/shared/misc/utils'
  12
  13 @Injectable()
  14 export class OverviewService {
  15   static BASE_OVERVIEW_URL = environment.apiUrl + '/api/v1/overviews/'
  16
  17   constructor (
  18     private authHttp: HttpClient,
  19     private restExtractor: RestExtractor,
  20     private videosService: VideoService,
  21     private serverService: ServerService
  22   ) {}
  23
  24   getVideosOverview (): Observable<VideosOverview> {
  25     return this.authHttp
  26                .get<VideosOverviewServer>(OverviewService.BASE_OVERVIEW_URL + 'videos')
  27                .pipe(
  28                  switchMap(serverVideosOverview => this.updateVideosOverview(serverVideosOverview)),
  29                  catchError(err => this.restExtractor.handleError(err))
  30                )
  31   }
  32
  33   private updateVideosOverview (serverVideosOverview: VideosOverviewServer): Observable<VideosOverview> {
  34     const observables: Observable<any>[] = []
  35     const videosOverviewResult: VideosOverview = {
  36       tags: [],
  37       categories: [],
  38       channels: []
  39     }
  40
  41     // Build videos objects
  42     for (const key of Object.keys(serverVideosOverview)) {
  43       for (const object of serverVideosOverview[ key ]) {
  44         observables.push(
  45           of(object.videos)
  46             .pipe(
  47               switchMap(videos => this.videosService.extractVideos({ total: 0, data: videos })),
  48               map(result => result.data),
  49               tap(videos => {
  50                 videosOverviewResult[key].push(immutableAssign(object, { videos }))
  51               })
  52             )
  53         )
  54       }
  55     }
  56
  57     if (observables.length === 0) return of(videosOverviewResult)
  58
  59     return forkJoin(observables)
  60       .pipe(
  61         // Translate categories
  62         switchMap(() => {
  63           return this.serverService.localeObservable
  64               .pipe(
  65                 tap(translations => {
  66                   for (const c of videosOverviewResult.categories) {
  67                     c.category.label = peertubeTranslate(c.category.label, translations)
  68                   }
  69                 })
  70               )
  71         }),
  72         map(() => videosOverviewResult)
  73       )
  74   }
  75
  76 }