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

   1 import { bufferTime, catchError, filter, map, share, switchMap, tap } from 'rxjs/operators'
   2 import { Injectable } from '@angular/core'
   3 import { merge, Observable, of, ReplaySubject, Subject } from 'rxjs'
   4 import { RestExtractor } from '../rest/rest-extractor.service'
   5 import { HttpClient, HttpParams } from '@angular/common/http'
   6 import { ResultList, VideoPlaylistElementCreate, VideoPlaylistElementUpdate } from '../../../../../shared'
   7 import { environment } from '../../../environments/environment'
   8 import { VideoPlaylist as VideoPlaylistServerModel } from '@shared/models/videos/playlist/video-playlist.model'
   9 import { VideoChannelService } from '@app/shared/video-channel/video-channel.service'
  10 import { VideoChannel } from '@app/shared/video-channel/video-channel.model'
  11 import { VideoPlaylistCreate } from '@shared/models/videos/playlist/video-playlist-create.model'
  12 import { VideoPlaylistUpdate } from '@shared/models/videos/playlist/video-playlist-update.model'
  13 import { objectToFormData } from '@app/shared/misc/utils'
  14 import { AuthUser, ServerService } from '@app/core'
  15 import { VideoPlaylist } from '@app/shared/video-playlist/video-playlist.model'
  16 import { AccountService } from '@app/shared/account/account.service'
  17 import { Account } from '@app/shared/account/account.model'
  18 import { RestService } from '@app/shared/rest'
  19 import { VideoExistInPlaylist, VideosExistInPlaylists } from '@shared/models/videos/playlist/video-exist-in-playlist.model'
  20 import { VideoPlaylistReorder } from '@shared/models/videos/playlist/video-playlist-reorder.model'
  21 import { ComponentPaginationLight } from '@app/shared/rest/component-pagination.model'
  22 import { VideoPlaylistElement as ServerVideoPlaylistElement } from '@shared/models/videos/playlist/video-playlist-element.model'
  23 import { VideoPlaylistElement } from '@app/shared/video-playlist/video-playlist-element.model'
  24 import { uniq } from 'lodash-es'
  25 import * as debug from 'debug'
  26
  27 const logger = debug('peertube:playlists:VideoPlaylistService')
  28
  29 export type CachedPlaylist = VideoPlaylist | { id: number, displayName: string }
  30
  31 @Injectable()
  32 export class VideoPlaylistService {
  33   static BASE_VIDEO_PLAYLIST_URL = environment.apiUrl + '/api/v1/video-playlists/'
  34   static MY_VIDEO_PLAYLIST_URL = environment.apiUrl + '/api/v1/users/me/video-playlists/'
  35
  36   // Use a replay subject because we "next" a value before subscribing
  37   private videoExistsInPlaylistNotifier = new ReplaySubject<number>(1)
  38   private videoExistsInPlaylistCacheSubject = new Subject<VideosExistInPlaylists>()
  39   private readonly videoExistsInPlaylistObservable: Observable<VideosExistInPlaylists>
  40
  41   private videoExistsObservableCache: { [ id: number ]: Observable<VideoExistInPlaylist[]> } = {}
  42   private videoExistsCache: { [ id: number ]: VideoExistInPlaylist[] } = {}
  43
  44   private myAccountPlaylistCache: ResultList<CachedPlaylist> = undefined
  45   private myAccountPlaylistCacheRunning = false
  46   private myAccountPlaylistCacheSubject = new Subject<ResultList<CachedPlaylist>>()
  47
  48   constructor (
  49     private authHttp: HttpClient,
  50     private serverService: ServerService,
  51     private restExtractor: RestExtractor,
  52     private restService: RestService
  53   ) {
  54     this.videoExistsInPlaylistObservable = merge(
  55       this.videoExistsInPlaylistNotifier.pipe(
  56         bufferTime(500),
  57         filter(videoIds => videoIds.length !== 0),
  58         map(videoIds => uniq(videoIds)),
  59         switchMap(videoIds => this.doVideosExistInPlaylist(videoIds)),
  60         share()
  61       ),
  62
  63       this.videoExistsInPlaylistCacheSubject
  64     )
  65   }
  66
  67   listChannelPlaylists (videoChannel: VideoChannel, componentPagination: ComponentPaginationLight): Observable<ResultList<VideoPlaylist>> {
  68     const url = VideoChannelService.BASE_VIDEO_CHANNEL_URL + videoChannel.nameWithHost + '/video-playlists'
  69     const pagination = this.restService.componentPaginationToRestPagination(componentPagination)
  70
  71     let params = new HttpParams()
  72     params = this.restService.addRestGetParams(params, pagination)
  73
  74     return this.authHttp.get<ResultList<VideoPlaylist>>(url, { params })
  75                .pipe(
  76                  switchMap(res => this.extractPlaylists(res)),
  77                  catchError(err => this.restExtractor.handleError(err))
  78                )
  79   }
  80
  81   listMyPlaylistWithCache (user: AuthUser, search?: string) {
  82     if (!search) {
  83       if (this.myAccountPlaylistCacheRunning) return
  84       if (this.myAccountPlaylistCache) return of(this.myAccountPlaylistCache)
  85     }
  86
  87     this.myAccountPlaylistCacheRunning = true
  88
  89     return this.listAccountPlaylists(user.account, undefined, '-updatedAt', search)
  90                .pipe(
  91                  tap(result => {
  92                    if (!search) {
  93                      this.myAccountPlaylistCacheRunning = false
  94                      this.myAccountPlaylistCache = result
  95                    }
  96                  })
  97                )
  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                    this.myAccountPlaylistCache.total++
 139
 140                    this.myAccountPlaylistCache.data.push({
 141                      id: res.videoPlaylist.id,
 142                      displayName: body.displayName
 143                    })
 144
 145                    this.myAccountPlaylistCacheSubject.next(this.myAccountPlaylistCache)
 146                  }),
 147                  catchError(err => this.restExtractor.handleError(err))
 148                )
 149   }
 150
 151   updateVideoPlaylist (videoPlaylist: VideoPlaylist, body: VideoPlaylistUpdate) {
 152     const data = objectToFormData(body)
 153
 154     return this.authHttp.put(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + videoPlaylist.id, data)
 155                .pipe(
 156                  map(this.restExtractor.extractDataBool),
 157                  tap(() => {
 158                    const playlist = this.myAccountPlaylistCache.data.find(p => p.id === videoPlaylist.id)
 159                    playlist.displayName = body.displayName
 160
 161                    this.myAccountPlaylistCacheSubject.next(this.myAccountPlaylistCache)
 162                  }),
 163                  catchError(err => this.restExtractor.handleError(err))
 164                )
 165   }
 166
 167   removeVideoPlaylist (videoPlaylist: VideoPlaylist) {
 168     return this.authHttp.delete(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + videoPlaylist.id)
 169                .pipe(
 170                  map(this.restExtractor.extractDataBool),
 171                  tap(() => {
 172                    this.myAccountPlaylistCache.total--
 173                    this.myAccountPlaylistCache.data = this.myAccountPlaylistCache.data
 174                                                           .filter(p => p.id !== videoPlaylist.id)
 175
 176                    this.myAccountPlaylistCacheSubject.next(this.myAccountPlaylistCache)
 177                  }),
 178                  catchError(err => this.restExtractor.handleError(err))
 179                )
 180   }
 181
 182   addVideoInPlaylist (playlistId: number, body: VideoPlaylistElementCreate) {
 183     const url = VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + playlistId + '/videos'
 184
 185     return this.authHttp.post<{ videoPlaylistElement: { id: number } }>(url, body)
 186                .pipe(
 187                  tap(res => {
 188                    const existsResult = this.videoExistsCache[body.videoId]
 189                    existsResult.push({
 190                      playlistId,
 191                      playlistElementId: res.videoPlaylistElement.id,
 192                      startTimestamp: body.startTimestamp,
 193                      stopTimestamp: body.stopTimestamp
 194                    })
 195
 196                    this.runPlaylistCheck(body.videoId)
 197                  }),
 198                  catchError(err => this.restExtractor.handleError(err))
 199                )
 200   }
 201
 202   updateVideoOfPlaylist (playlistId: number, playlistElementId: number, body: VideoPlaylistElementUpdate, videoId: number) {
 203     return this.authHttp.put(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + playlistId + '/videos/' + playlistElementId, body)
 204                .pipe(
 205                  map(this.restExtractor.extractDataBool),
 206                  tap(() => {
 207                    const existsResult = this.videoExistsCache[videoId]
 208                    const elem = existsResult.find(e => e.playlistElementId === playlistElementId)
 209
 210                    elem.startTimestamp = body.startTimestamp
 211                    elem.stopTimestamp = body.stopTimestamp
 212
 213                    this.runPlaylistCheck(videoId)
 214                  }),
 215                  catchError(err => this.restExtractor.handleError(err))
 216                )
 217   }
 218
 219   removeVideoFromPlaylist (playlistId: number, playlistElementId: number, videoId?: number) {
 220     return this.authHttp.delete(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + playlistId + '/videos/' + playlistElementId)
 221                .pipe(
 222                  map(this.restExtractor.extractDataBool),
 223                  tap(() => {
 224                    if (!videoId) return
 225
 226                    this.videoExistsCache[videoId] = this.videoExistsCache[videoId].filter(e => e.playlistElementId !== playlistElementId)
 227                    this.runPlaylistCheck(videoId)
 228                  }),
 229                  catchError(err => this.restExtractor.handleError(err))
 230                )
 231   }
 232
 233   reorderPlaylist (playlistId: number, oldPosition: number, newPosition: number) {
 234     const body: VideoPlaylistReorder = {
 235       startPosition: oldPosition,
 236       insertAfterPosition: newPosition
 237     }
 238
 239     return this.authHttp.post(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + playlistId + '/videos/reorder', body)
 240                .pipe(
 241                  map(this.restExtractor.extractDataBool),
 242                  catchError(err => this.restExtractor.handleError(err))
 243                )
 244   }
 245
 246   getPlaylistVideos (
 247     videoPlaylistId: number | string,
 248     componentPagination: ComponentPaginationLight
 249   ): Observable<ResultList<VideoPlaylistElement>> {
 250     const path = VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + videoPlaylistId + '/videos'
 251     const pagination = this.restService.componentPaginationToRestPagination(componentPagination)
 252
 253     let params = new HttpParams()
 254     params = this.restService.addRestGetParams(params, pagination)
 255
 256     return this.authHttp
 257                .get<ResultList<ServerVideoPlaylistElement>>(path, { params })
 258                .pipe(
 259                  switchMap(res => this.extractVideoPlaylistElements(res)),
 260                  catchError(err => this.restExtractor.handleError(err))
 261                )
 262   }
 263
 264   listenToMyAccountPlaylistsChange () {
 265     return this.myAccountPlaylistCacheSubject.asObservable()
 266   }
 267
 268   listenToVideoPlaylistChange (videoId: number) {
 269     if (this.videoExistsObservableCache[ videoId ]) {
 270       return this.videoExistsObservableCache[ videoId ]
 271     }
 272
 273     const obs = this.videoExistsInPlaylistObservable
 274                     .pipe(
 275                       map(existsResult => existsResult[ videoId ]),
 276                       filter(r => !!r),
 277                       tap(result => this.videoExistsCache[ videoId ] = result)
 278                     )
 279
 280     this.videoExistsObservableCache[ videoId ] = obs
 281     return obs
 282   }
 283
 284   runPlaylistCheck (videoId: number) {
 285     logger('Running playlist check.')
 286
 287     if (this.videoExistsCache[videoId]) {
 288       logger('Found cache for %d.', videoId)
 289
 290       return this.videoExistsInPlaylistCacheSubject.next({ [videoId]: this.videoExistsCache[videoId] })
 291     }
 292
 293     logger('Fetching from network for %d.', videoId)
 294     return this.videoExistsInPlaylistNotifier.next(videoId)
 295   }
 296
 297   extractPlaylists (result: ResultList<VideoPlaylistServerModel>) {
 298     return this.serverService.getServerLocale()
 299                .pipe(
 300                  map(translations => {
 301                    const playlistsJSON = result.data
 302                    const total = result.total
 303                    const playlists: VideoPlaylist[] = []
 304
 305                    for (const playlistJSON of playlistsJSON) {
 306                      playlists.push(new VideoPlaylist(playlistJSON, translations))
 307                    }
 308
 309                    return { data: playlists, total }
 310                  })
 311                )
 312   }
 313
 314   extractPlaylist (playlist: VideoPlaylistServerModel) {
 315     return this.serverService.getServerLocale()
 316                .pipe(map(translations => new VideoPlaylist(playlist, translations)))
 317   }
 318
 319   extractVideoPlaylistElements (result: ResultList<ServerVideoPlaylistElement>) {
 320     return this.serverService.getServerLocale()
 321                .pipe(
 322                  map(translations => {
 323                    const elementsJson = result.data
 324                    const total = result.total
 325                    const elements: VideoPlaylistElement[] = []
 326
 327                    for (const elementJson of elementsJson) {
 328                      elements.push(new VideoPlaylistElement(elementJson, translations))
 329                    }
 330
 331                    return { total, data: elements }
 332                  })
 333                )
 334   }
 335
 336   private doVideosExistInPlaylist (videoIds: number[]): Observable<VideosExistInPlaylists> {
 337     const url = VideoPlaylistService.MY_VIDEO_PLAYLIST_URL + 'videos-exist'
 338
 339     let params = new HttpParams()
 340     params = this.restService.addObjectParams(params, { videoIds })
 341
 342     return this.authHttp.get<VideoExistInPlaylist>(url, { params, headers: { ignoreLoadingBar: '' } })
 343                .pipe(catchError(err => this.restExtractor.handleError(err)))
 344   }
 345 }