client/src/app/shared/shared-video-playlist/video-playlist.service.ts

   1 import * as debug from 'debug'
   2 import { merge, Observable, of, ReplaySubject, Subject } from 'rxjs'
   3 import { catchError, filter, map, share, switchMap, tap } from 'rxjs/operators'
   4 import { HttpClient, HttpParams } from '@angular/common/http'
   5 import { Injectable, NgZone } from '@angular/core'
   6 import { AuthUser, ComponentPaginationLight, RestExtractor, RestService, ServerService } from '@app/core'
   7 import { buildBulkObservable, objectToFormData } from '@app/helpers'
   8 import { Account, AccountService, VideoChannel, VideoChannelService } from '@app/shared/shared-main'
   9 import {
  10   ResultList,
  11   VideoExistInPlaylist,
  12   VideoPlaylist as VideoPlaylistServerModel,
  13   VideoPlaylistCreate,
  14   VideoPlaylistElement as ServerVideoPlaylistElement,
  15   VideoPlaylistElementCreate,
  16   VideoPlaylistElementUpdate,
  17   VideoPlaylistReorder,
  18   VideoPlaylistUpdate,
  19   VideosExistInPlaylists
  20 } from '@shared/models'
  21 import { environment } from '../../../environments/environment'
  22 import { VideoPlaylistElement } from './video-playlist-element.model'
  23 import { VideoPlaylist } from './video-playlist.model'
  24
  25 const logger = debug('peertube:playlists:VideoPlaylistService')
  26
  27 export type CachedPlaylist = VideoPlaylist | { id: number, displayName: string }
  28
  29 @Injectable()
  30 export class VideoPlaylistService {
  31   static BASE_VIDEO_PLAYLIST_URL = environment.apiUrl + '/api/v1/video-playlists/'
  32   static MY_VIDEO_PLAYLIST_URL = environment.apiUrl + '/api/v1/users/me/video-playlists/'
  33
  34   // Use a replay subject because we "next" a value before subscribing
  35   private videoExistsInPlaylistNotifier = new ReplaySubject<number>(1)
  36   private videoExistsInPlaylistCacheSubject = new Subject<VideosExistInPlaylists>()
  37   private readonly videoExistsInPlaylistObservable: Observable<VideosExistInPlaylists>
  38
  39   private videoExistsObservableCache: { [ id: number ]: Observable<VideoExistInPlaylist[]> } = {}
  40   private videoExistsCache: { [ id: number ]: VideoExistInPlaylist[] } = {}
  41
  42   private myAccountPlaylistCache: ResultList<CachedPlaylist> = undefined
  43   private myAccountPlaylistCacheRunning: Observable<ResultList<CachedPlaylist>>
  44   private myAccountPlaylistCacheSubject = new Subject<ResultList<CachedPlaylist>>()
  45
  46   constructor (
  47     private authHttp: HttpClient,
  48     private serverService: ServerService,
  49     private restExtractor: RestExtractor,
  50     private restService: RestService,
  51     private ngZone: NgZone
  52   ) {
  53     this.videoExistsInPlaylistObservable = merge(
  54       buildBulkObservable({
  55         time: 500,
  56         ngZone: this.ngZone,
  57         bulkGet: this.doVideosExistInPlaylist.bind(this),
  58         notifierObservable: this.videoExistsInPlaylistNotifier
  59       }),
  60
  61       this.videoExistsInPlaylistCacheSubject
  62     )
  63   }
  64
  65   listChannelPlaylists (videoChannel: VideoChannel, componentPagination: ComponentPaginationLight): Observable<ResultList<VideoPlaylist>> {
  66     const url = VideoChannelService.BASE_VIDEO_CHANNEL_URL + videoChannel.nameWithHost + '/video-playlists'
  67     const pagination = this.restService.componentPaginationToRestPagination(componentPagination)
  68
  69     let params = new HttpParams()
  70     params = this.restService.addRestGetParams(params, pagination)
  71
  72     return this.authHttp.get<ResultList<VideoPlaylist>>(url, { params })
  73                .pipe(
  74                  switchMap(res => this.extractPlaylists(res)),
  75                  catchError(err => this.restExtractor.handleError(err))
  76                )
  77   }
  78
  79   listMyPlaylistWithCache (user: AuthUser, search?: string) {
  80     if (!search) {
  81       if (this.myAccountPlaylistCacheRunning) return this.myAccountPlaylistCacheRunning
  82       if (this.myAccountPlaylistCache) return of(this.myAccountPlaylistCache)
  83     }
  84
  85     const obs = this.listAccountPlaylists(user.account, undefined, '-updatedAt', search)
  86                .pipe(
  87                  tap(result => {
  88                    if (!search) {
  89                      this.myAccountPlaylistCacheRunning = undefined
  90                      this.myAccountPlaylistCache = result
  91                    }
  92                  }),
  93                  share()
  94                )
  95
  96     if (!search) this.myAccountPlaylistCacheRunning = obs
  97     return obs
  98   }
  99
 100   listAccountPlaylists (
 101     account: Account,
 102     componentPagination: ComponentPaginationLight,
 103     sort: string,
 104     search?: string
 105   ): Observable<ResultList<VideoPlaylist>> {
 106     const url = AccountService.BASE_ACCOUNT_URL + account.nameWithHost + '/video-playlists'
 107     const pagination = componentPagination
 108       ? this.restService.componentPaginationToRestPagination(componentPagination)
 109       : undefined
 110
 111     let params = new HttpParams()
 112     params = this.restService.addRestGetParams(params, pagination, sort)
 113     if (search) params = this.restService.addObjectParams(params, { search })
 114
 115     return this.authHttp.get<ResultList<VideoPlaylist>>(url, { params })
 116                .pipe(
 117                  switchMap(res => this.extractPlaylists(res)),
 118                  catchError(err => this.restExtractor.handleError(err))
 119                )
 120   }
 121
 122   getVideoPlaylist (id: string | number) {
 123     const url = VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + id
 124
 125     return this.authHttp.get<VideoPlaylist>(url)
 126                .pipe(
 127                  switchMap(res => this.extractPlaylist(res)),
 128                  catchError(err => this.restExtractor.handleError(err))
 129                )
 130   }
 131
 132   createVideoPlaylist (body: VideoPlaylistCreate) {
 133     const data = objectToFormData(body)
 134
 135     return this.authHttp.post<{ videoPlaylist: { id: number } }>(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL, data)
 136                .pipe(
 137                  tap(res => {
 138                    if (!this.myAccountPlaylistCache) return
 139
 140                    this.myAccountPlaylistCache.total++
 141
 142                    this.myAccountPlaylistCache.data.push({
 143                      id: res.videoPlaylist.id,
 144                      displayName: body.displayName
 145                    })
 146
 147                    this.myAccountPlaylistCacheSubject.next(this.myAccountPlaylistCache)
 148                  }),
 149                  catchError(err => this.restExtractor.handleError(err))
 150                )
 151   }
 152
 153   updateVideoPlaylist (videoPlaylist: VideoPlaylist, body: VideoPlaylistUpdate) {
 154     const data = objectToFormData(body)
 155
 156     return this.authHttp.put(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + videoPlaylist.id, data)
 157                .pipe(
 158                  map(this.restExtractor.extractDataBool),
 159                  tap(() => {
 160                    if (!this.myAccountPlaylistCache) return
 161
 162                    const playlist = this.myAccountPlaylistCache.data.find(p => p.id === videoPlaylist.id)
 163                    playlist.displayName = body.displayName
 164
 165                    this.myAccountPlaylistCacheSubject.next(this.myAccountPlaylistCache)
 166                  }),
 167                  catchError(err => this.restExtractor.handleError(err))
 168                )
 169   }
 170
 171   removeVideoPlaylist (videoPlaylist: VideoPlaylist) {
 172     return this.authHttp.delete(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + videoPlaylist.id)
 173                .pipe(
 174                  map(this.restExtractor.extractDataBool),
 175                  tap(() => {
 176                    if (!this.myAccountPlaylistCache) return
 177
 178                    this.myAccountPlaylistCache.total--
 179                    this.myAccountPlaylistCache.data = this.myAccountPlaylistCache.data
 180                                                           .filter(p => p.id !== videoPlaylist.id)
 181
 182                    this.myAccountPlaylistCacheSubject.next(this.myAccountPlaylistCache)
 183                  }),
 184                  catchError(err => this.restExtractor.handleError(err))
 185                )
 186   }
 187
 188   addVideoInPlaylist (playlistId: number, body: VideoPlaylistElementCreate) {
 189     const url = VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + playlistId + '/videos'
 190
 191     return this.authHttp.post<{ videoPlaylistElement: { id: number } }>(url, body)
 192                .pipe(
 193                  tap(res => {
 194                    const existsResult = this.videoExistsCache[body.videoId]
 195                    existsResult.push({
 196                      playlistId,
 197                      playlistElementId: res.videoPlaylistElement.id,
 198                      startTimestamp: body.startTimestamp,
 199                      stopTimestamp: body.stopTimestamp
 200                    })
 201
 202                    this.runPlaylistCheck(body.videoId)
 203                  }),
 204                  catchError(err => this.restExtractor.handleError(err))
 205                )
 206   }
 207
 208   updateVideoOfPlaylist (playlistId: number, playlistElementId: number, body: VideoPlaylistElementUpdate, videoId: number) {
 209     return this.authHttp.put(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + playlistId + '/videos/' + playlistElementId, body)
 210                .pipe(
 211                  map(this.restExtractor.extractDataBool),
 212                  tap(() => {
 213                    const existsResult = this.videoExistsCache[videoId]
 214
 215                    if (existsResult) {
 216                      const elem = existsResult.find(e => e.playlistElementId === playlistElementId)
 217
 218                      elem.startTimestamp = body.startTimestamp
 219                      elem.stopTimestamp = body.stopTimestamp
 220                    }
 221
 222                    this.runPlaylistCheck(videoId)
 223                  }),
 224                  catchError(err => this.restExtractor.handleError(err))
 225                )
 226   }
 227
 228   removeVideoFromPlaylist (playlistId: number, playlistElementId: number, videoId?: number) {
 229     return this.authHttp.delete(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + playlistId + '/videos/' + playlistElementId)
 230                .pipe(
 231                  map(this.restExtractor.extractDataBool),
 232                  tap(() => {
 233                    if (!videoId) return
 234
 235                    if (this.videoExistsCache[videoId]) {
 236                      this.videoExistsCache[videoId] = this.videoExistsCache[videoId]
 237                        .filter(e => e.playlistElementId !== playlistElementId)
 238                    }
 239
 240                    this.runPlaylistCheck(videoId)
 241                  }),
 242                  catchError(err => this.restExtractor.handleError(err))
 243                )
 244   }
 245
 246   reorderPlaylist (playlistId: number, oldPosition: number, newPosition: number) {
 247     const body: VideoPlaylistReorder = {
 248       startPosition: oldPosition,
 249       insertAfterPosition: newPosition
 250     }
 251
 252     return this.authHttp.post(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + playlistId + '/videos/reorder', body)
 253                .pipe(
 254                  map(this.restExtractor.extractDataBool),
 255                  catchError(err => this.restExtractor.handleError(err))
 256                )
 257   }
 258
 259   getPlaylistVideos (
 260     videoPlaylistId: number | string,
 261     componentPagination: ComponentPaginationLight
 262   ): Observable<ResultList<VideoPlaylistElement>> {
 263     const path = VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + videoPlaylistId + '/videos'
 264     const pagination = this.restService.componentPaginationToRestPagination(componentPagination)
 265
 266     let params = new HttpParams()
 267     params = this.restService.addRestGetParams(params, pagination)
 268
 269     return this.authHttp
 270                .get<ResultList<ServerVideoPlaylistElement>>(path, { params })
 271                .pipe(
 272                  switchMap(res => this.extractVideoPlaylistElements(res)),
 273                  catchError(err => this.restExtractor.handleError(err))
 274                )
 275   }
 276
 277   listenToMyAccountPlaylistsChange () {
 278     return this.myAccountPlaylistCacheSubject.asObservable()
 279   }
 280
 281   listenToVideoPlaylistChange (videoId: number) {
 282     if (this.videoExistsObservableCache[videoId]) {
 283       return this.videoExistsObservableCache[videoId]
 284     }
 285
 286     const obs = this.videoExistsInPlaylistObservable
 287                     .pipe(
 288                       map(existsResult => existsResult[videoId]),
 289                       filter(r => !!r),
 290                       tap(result => this.videoExistsCache[videoId] = result)
 291                     )
 292
 293     this.videoExistsObservableCache[videoId] = obs
 294     return obs
 295   }
 296
 297   runPlaylistCheck (videoId: number) {
 298     logger('Running playlist check.')
 299
 300     if (this.videoExistsCache[videoId]) {
 301       logger('Found cache for %d.', videoId)
 302
 303       return this.videoExistsInPlaylistCacheSubject.next({ [videoId]: this.videoExistsCache[videoId] })
 304     }
 305
 306     logger('Fetching from network for %d.', videoId)
 307     return this.videoExistsInPlaylistNotifier.next(videoId)
 308   }
 309
 310   extractPlaylists (result: ResultList<VideoPlaylistServerModel>) {
 311     return this.serverService.getServerLocale()
 312                .pipe(
 313                  map(translations => {
 314                    const playlistsJSON = result.data
 315                    const total = result.total
 316                    const playlists: VideoPlaylist[] = []
 317
 318                    for (const playlistJSON of playlistsJSON) {
 319                      playlists.push(new VideoPlaylist(playlistJSON, translations))
 320                    }
 321
 322                    return { data: playlists, total }
 323                  })
 324                )
 325   }
 326
 327   extractPlaylist (playlist: VideoPlaylistServerModel) {
 328     return this.serverService.getServerLocale()
 329                .pipe(map(translations => new VideoPlaylist(playlist, translations)))
 330   }
 331
 332   extractVideoPlaylistElements (result: ResultList<ServerVideoPlaylistElement>) {
 333     return this.serverService.getServerLocale()
 334                .pipe(
 335                  map(translations => {
 336                    const elementsJson = result.data
 337                    const total = result.total
 338                    const elements: VideoPlaylistElement[] = []
 339
 340                    for (const elementJson of elementsJson) {
 341                      elements.push(new VideoPlaylistElement(elementJson, translations))
 342                    }
 343
 344                    return { total, data: elements }
 345                  })
 346                )
 347   }
 348
 349   private doVideosExistInPlaylist (videoIds: number[]): Observable<VideosExistInPlaylists> {
 350     const url = VideoPlaylistService.MY_VIDEO_PLAYLIST_URL + 'videos-exist'
 351
 352     let params = new HttpParams()
 353     params = this.restService.addObjectParams(params, { videoIds })
 354
 355     return this.authHttp.get<VideoExistInPlaylist>(url, { params, headers: { ignoreLoadingBar: '' } })
 356                .pipe(catchError(err => this.restExtractor.handleError(err)))
 357   }
 358 }