client/src/app/shared/shared-main/video/video-file-token.service.ts

   1 import { catchError, map, of, tap } from 'rxjs'
   2 import { HttpClient } from '@angular/common/http'
   3 import { Injectable } from '@angular/core'
   4 import { RestExtractor } from '@app/core'
   5 import { VideoToken } from '@shared/models'
   6 import { VideoService } from './video.service'
   7
   8 @Injectable()
   9 export class VideoFileTokenService {
  10
  11   private readonly store = new Map<string, { token: string, expires: Date }>()
  12
  13   constructor (
  14     private authHttp: HttpClient,
  15     private restExtractor: RestExtractor
  16   ) {}
  17
  18   getVideoFileToken (videoUUID: string) {
  19     const existing = this.store.get(videoUUID)
  20     if (existing) return of(existing)
  21
  22     return this.createVideoFileToken(videoUUID)
  23       .pipe(tap(result => this.store.set(videoUUID, { token: result.token, expires: new Date(result.expires) })))
  24   }
  25
  26   private createVideoFileToken (videoUUID: string) {
  27     return this.authHttp.post<VideoToken>(`${VideoService.BASE_VIDEO_URL}/${videoUUID}/token`, {})
  28       .pipe(
  29         map(({ files }) => files),
  30         catchError(err => this.restExtractor.handleError(err))
  31       )
  32   }
  33 }