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

   1 import * as debug from 'debug'
   2 import { uniq } from 'lodash-es'
   3 import { asyncScheduler, merge, Observable, of, ReplaySubject, Subject } from 'rxjs'
   4 import { bufferTime, catchError, filter, map, observeOn, share, switchMap, tap } from 'rxjs/operators'
   5 import { HttpClient, HttpParams } from '@angular/common/http'
   6 import { Injectable, NgZone } from '@angular/core'
   7 import { AuthUser, ComponentPaginationLight, RestExtractor, RestService, ServerService } from '@app/core'
   8 import { enterZone, leaveZone, objectToFormData } from '@app/helpers'
   9 import { Account, AccountService, VideoChannel, VideoChannelService } from '@app/shared/shared-main'
  10 import {
  11   ResultList,
  12   VideoExistInPlaylist,
  13   VideoPlaylist as VideoPlaylistServerModel,
  14   VideoPlaylistCreate,
  15   VideoPlaylistElement as ServerVideoPlaylistElement,
  16   VideoPlaylistElementCreate,
  17   VideoPlaylistElementUpdate,
  18   VideoPlaylistReorder,
  19   VideoPlaylistUpdate,
  20   VideosExistInPlaylists
  21 } from '@shared/models'
  22 import { environment } from '../../../environments/environment'
  23 import { VideoPlaylistElement } from './video-playlist-element.model'
  24 import { VideoPlaylist } from './video-playlist.model'
  25
  26 const logger = debug('peertube:playlists:VideoPlaylistService')
  27
  28 export type CachedPlaylist = VideoPlaylist | { id: number, displayName: string }
  29
  30 @Injectable()
  31 export class VideoPlaylistService {
  32   static BASE_VIDEO_PLAYLIST_URL = environment.apiUrl + '/api/v1/video-playlists/'
  33   static MY_VIDEO_PLAYLIST_URL = environment.apiUrl + '/api/v1/users/me/video-playlists/'
  34
  35   // Use a replay subject because we "next" a value before subscribing
  36   private videoExistsInPlaylistNotifier = new ReplaySubject<number>(1)
  37   private videoExistsInPlaylistCacheSubject = new Subject<VideosExistInPlaylists>()
  38   private readonly videoExistsInPlaylistObservable: Observable<VideosExistInPlaylists>
  39
  40   private videoExistsObservableCache: { [ id: number ]: Observable<VideoExistInPlaylist[]> } = {}
  41   private videoExistsCache: { [ id: number ]: VideoExistInPlaylist[] } = {}
  42
  43   private myAccountPlaylistCache: ResultList<CachedPlaylist> = undefined
  44   private myAccountPlaylistCacheRunning: Observable<ResultList<CachedPlaylist>>
  45   private myAccountPlaylistCacheSubject = new Subject<ResultList<CachedPlaylist>>()
  46
  47   constructor (
  48     private authHttp: HttpClient,
  49     private serverService: ServerService,
  50     private restExtractor: RestExtractor,
  51     private restService: RestService,
  52     private ngZone: NgZone
  53   ) {
  54     this.videoExistsInPlaylistObservable = merge(
  55       this.videoExistsInPlaylistNotifier.pipe(
  56         // We leave Angular zone so Protractor does not get stuck
  57         bufferTime(500, leaveZone(this.ngZone, asyncScheduler)),
  58         filter(videoIds => videoIds.length !== 0),
  59         map(videoIds => uniq(videoIds)),
  60         observeOn(enterZone(this.ngZone, asyncScheduler)),
  61         switchMap(videoIds => this.doVideosExistInPlaylist(videoIds)),
  62         share()
  63       ),
  64
  65       this.videoExistsInPlaylistCacheSubject
  66     )
  67   }
  68
  69   listChannelPlaylists (videoChannel: VideoChannel, componentPagination: ComponentPaginationLight): Observable<ResultList<VideoPlaylist>> {
  70     const url = VideoChannelService.BASE_VIDEO_CHANNEL_URL + videoChannel.nameWithHost + '/video-playlists'
  71     const pagination = this.restService.componentPaginationToRestPagination(componentPagination)
  72
  73     let params = new HttpParams()
  74     params = this.restService.addRestGetParams(params, pagination)
  75
  76     return this.authHttp.get<ResultList<VideoPlaylist>>(url, { params })
  77                .pipe(
  78                  switchMap(res => this.extractPlaylists(res)),
  79                  catchError(err => this.restExtractor.handleError(err))
  80                )
  81   }
  82
  83   listMyPlaylistWithCache (user: AuthUser, search?: string) {
  84     if (!search) {
  85       if (this.myAccountPlaylistCacheRunning) return this.myAccountPlaylistCacheRunning
  86       if (this.myAccountPlaylistCache) return of(this.myAccountPlaylistCache)
  87     }
  88
  89     const obs = this.listAccountPlaylists(user.account, undefined, '-updatedAt', search)
  90                .pipe(
  91                  tap(result => {
  92                    if (!search) {
  93                      this.myAccountPlaylistCacheRunning = undefined
  94                      this.myAccountPlaylistCache = result
  95                    }
  96                  }),
  97                  share()
  98                )
  99
 100     if (!search) this.myAccountPlaylistCacheRunning = obs
 101     return obs
 102   }
 103
 104   listAccountPlaylists (
 105     account: Account,
 106     componentPagination: ComponentPaginationLight,
 107     sort: string,
 108     search?: string
 109   ): Observable<ResultList<VideoPlaylist>> {
 110     const url = AccountService.BASE_ACCOUNT_URL + account.nameWithHost + '/video-playlists'
 111     const pagination = componentPagination
 112       ? this.restService.componentPaginationToRestPagination(componentPagination)
 113       : undefined
 114
 115     let params = new HttpParams()
 116     params = this.restService.addRestGetParams(params, pagination, sort)
 117     if (search) params = this.restService.addObjectParams(params, { search })
 118
 119     return this.authHttp.get<ResultList<VideoPlaylist>>(url, { params })
 120                .pipe(
 121                  switchMap(res => this.extractPlaylists(res)),
 122                  catchError(err => this.restExtractor.handleError(err))
 123                )
 124   }
 125
 126   getVideoPlaylist (id: string | number) {
 127     const url = VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + id
 128
 129     return this.authHttp.get<VideoPlaylist>(url)
 130                .pipe(
 131                  switchMap(res => this.extractPlaylist(res)),
 132                  catchError(err => this.restExtractor.handleError(err))
 133                )
 134   }
 135
 136   createVideoPlaylist (body: VideoPlaylistCreate) {
 137     const data = objectToFormData(body)
 138
 139     return this.authHttp.post<{ videoPlaylist: { id: number } }>(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL, data)
 140                .pipe(
 141                  tap(res => {
 142                    if (!this.myAccountPlaylistCache) return
 143
 144                    this.myAccountPlaylistCache.total++
 145
 146                    this.myAccountPlaylistCache.data.push({
 147                      id: res.videoPlaylist.id,
 148                      displayName: body.displayName
 149                    })
 150
 151                    this.myAccountPlaylistCacheSubject.next(this.myAccountPlaylistCache)
 152                  }),
 153                  catchError(err => this.restExtractor.handleError(err))
 154                )
 155   }
 156
 157   updateVideoPlaylist (videoPlaylist: VideoPlaylist, body: VideoPlaylistUpdate) {
 158     const data = objectToFormData(body)
 159
 160     return this.authHttp.put(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + videoPlaylist.id, data)
 161                .pipe(
 162                  map(this.restExtractor.extractDataBool),
 163                  tap(() => {
 164                    if (!this.myAccountPlaylistCache) return
 165
 166                    const playlist = this.myAccountPlaylistCache.data.find(p => p.id === videoPlaylist.id)
 167                    playlist.displayName = body.displayName
 168
 169                    this.myAccountPlaylistCacheSubject.next(this.myAccountPlaylistCache)
 170                  }),
 171                  catchError(err => this.restExtractor.handleError(err))
 172                )
 173   }
 174
 175   removeVideoPlaylist (videoPlaylist: VideoPlaylist) {
 176     return this.authHttp.delete(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + videoPlaylist.id)
 177                .pipe(
 178                  map(this.restExtractor.extractDataBool),
 179                  tap(() => {
 180                    if (!this.myAccountPlaylistCache) return
 181
 182                    this.myAccountPlaylistCache.total--
 183                    this.myAccountPlaylistCache.data = this.myAccountPlaylistCache.data
 184                                                           .filter(p => p.id !== videoPlaylist.id)
 185
 186                    this.myAccountPlaylistCacheSubject.next(this.myAccountPlaylistCache)
 187                  }),
 188                  catchError(err => this.restExtractor.handleError(err))
 189                )
 190   }
 191
 192   addVideoInPlaylist (playlistId: number, body: VideoPlaylistElementCreate) {
 193     const url = VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + playlistId + '/videos'
 194
 195     return this.authHttp.post<{ videoPlaylistElement: { id: number } }>(url, body)
 196                .pipe(
 197                  tap(res => {
 198                    const existsResult = this.videoExistsCache[body.videoId]
 199                    existsResult.push({
 200                      playlistId,
 201                      playlistElementId: res.videoPlaylistElement.id,
 202                      startTimestamp: body.startTimestamp,
 203                      stopTimestamp: body.stopTimestamp
 204                    })
 205
 206                    this.runPlaylistCheck(body.videoId)
 207                  }),
 208                  catchError(err => this.restExtractor.handleError(err))
 209                )
 210   }
 211
 212   updateVideoOfPlaylist (playlistId: number, playlistElementId: number, body: VideoPlaylistElementUpdate, videoId: number) {
 213     return this.authHttp.put(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + playlistId + '/videos/' + playlistElementId, body)
 214                .pipe(
 215                  map(this.restExtractor.extractDataBool),
 216                  tap(() => {
 217                    const existsResult = this.videoExistsCache[videoId]
 218                    const elem = existsResult.find(e => e.playlistElementId === playlistElementId)
 219
 220                    elem.startTimestamp = body.startTimestamp
 221                    elem.stopTimestamp = body.stopTimestamp
 222
 223                    this.runPlaylistCheck(videoId)
 224                  }),
 225                  catchError(err => this.restExtractor.handleError(err))
 226                )
 227   }
 228
 229   removeVideoFromPlaylist (playlistId: number, playlistElementId: number, videoId?: number) {
 230     return this.authHttp.delete(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + playlistId + '/videos/' + playlistElementId)
 231                .pipe(
 232                  map(this.restExtractor.extractDataBool),
 233                  tap(() => {
 234                    if (!videoId) return
 235
 236                    this.videoExistsCache[videoId] = this.videoExistsCache[videoId].filter(e => e.playlistElementId !== playlistElementId)
 237                    this.runPlaylistCheck(videoId)
 238                  }),
 239                  catchError(err => this.restExtractor.handleError(err))
 240                )
 241   }
 242
 243   reorderPlaylist (playlistId: number, oldPosition: number, newPosition: number) {
 244     const body: VideoPlaylistReorder = {
 245       startPosition: oldPosition,
 246       insertAfterPosition: newPosition
 247     }
 248
 249     return this.authHttp.post(VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + playlistId + '/videos/reorder', body)
 250                .pipe(
 251                  map(this.restExtractor.extractDataBool),
 252                  catchError(err => this.restExtractor.handleError(err))
 253                )
 254   }
 255
 256   getPlaylistVideos (
 257     videoPlaylistId: number | string,
 258     componentPagination: ComponentPaginationLight
 259   ): Observable<ResultList<VideoPlaylistElement>> {
 260     const path = VideoPlaylistService.BASE_VIDEO_PLAYLIST_URL + videoPlaylistId + '/videos'
 261     const pagination = this.restService.componentPaginationToRestPagination(componentPagination)
 262
 263     let params = new HttpParams()
 264     params = this.restService.addRestGetParams(params, pagination)
 265
 266     return this.authHttp
 267                .get<ResultList<ServerVideoPlaylistElement>>(path, { params })
 268                .pipe(
 269                  switchMap(res => this.extractVideoPlaylistElements(res)),
 270                  catchError(err => this.restExtractor.handleError(err))
 271                )
 272   }
 273
 274   listenToMyAccountPlaylistsChange () {
 275     return this.myAccountPlaylistCacheSubject.asObservable()
 276   }
 277
 278   listenToVideoPlaylistChange (videoId: number) {
 279     if (this.videoExistsObservableCache[ videoId ]) {
 280       return this.videoExistsObservableCache[ videoId ]
 281     }
 282
 283     const obs = this.videoExistsInPlaylistObservable
 284                     .pipe(
 285                       map(existsResult => existsResult[ videoId ]),
 286                       filter(r => !!r),
 287                       tap(result => this.videoExistsCache[ videoId ] = result)
 288                     )
 289
 290     this.videoExistsObservableCache[ videoId ] = obs
 291     return obs
 292   }
 293
 294   runPlaylistCheck (videoId: number) {
 295     logger('Running playlist check.')
 296
 297     if (this.videoExistsCache[videoId]) {
 298       logger('Found cache for %d.', videoId)
 299
 300       return this.videoExistsInPlaylistCacheSubject.next({ [videoId]: this.videoExistsCache[videoId] })
 301     }
 302
 303     logger('Fetching from network for %d.', videoId)
 304     return this.videoExistsInPlaylistNotifier.next(videoId)
 305   }
 306
 307   extractPlaylists (result: ResultList<VideoPlaylistServerModel>) {
 308     return this.serverService.getServerLocale()
 309                .pipe(
 310                  map(translations => {
 311                    const playlistsJSON = result.data
 312                    const total = result.total
 313                    const playlists: VideoPlaylist[] = []
 314
 315                    for (const playlistJSON of playlistsJSON) {
 316                      playlists.push(new VideoPlaylist(playlistJSON, translations))
 317                    }
 318
 319                    return { data: playlists, total }
 320                  })
 321                )
 322   }
 323
 324   extractPlaylist (playlist: VideoPlaylistServerModel) {
 325     return this.serverService.getServerLocale()
 326                .pipe(map(translations => new VideoPlaylist(playlist, translations)))
 327   }
 328
 329   extractVideoPlaylistElements (result: ResultList<ServerVideoPlaylistElement>) {
 330     return this.serverService.getServerLocale()
 331                .pipe(
 332                  map(translations => {
 333                    const elementsJson = result.data
 334                    const total = result.total
 335                    const elements: VideoPlaylistElement[] = []
 336
 337                    for (const elementJson of elementsJson) {
 338                      elements.push(new VideoPlaylistElement(elementJson, translations))
 339                    }
 340
 341                    return { total, data: elements }
 342                  })
 343                )
 344   }
 345
 346   private doVideosExistInPlaylist (videoIds: number[]): Observable<VideosExistInPlaylists> {
 347     const url = VideoPlaylistService.MY_VIDEO_PLAYLIST_URL + 'videos-exist'
 348
 349     let params = new HttpParams()
 350     params = this.restService.addObjectParams(params, { videoIds })
 351
 352     return this.authHttp.get<VideoExistInPlaylist>(url, { params, headers: { ignoreLoadingBar: '' } })
 353                .pipe(catchError(err => this.restExtractor.handleError(err)))
 354   }
 355 }