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f1a0f3b7 C |
1 | import { HttpStatusCode, ResultList, VideoPlaylistElement } from '../../../../../shared/models' |
2 | import { AuthHTTP } from './auth-http' | |
3 | ||
4 | export class PlaylistFetcher { | |
5 | ||
6 | constructor (private readonly http: AuthHTTP) { | |
7 | ||
8 | } | |
9 | ||
10 | async loadPlaylist (playlistId: string) { | |
11 | const playlistPromise = this.loadPlaylistInfo(playlistId) | |
12 | const playlistElementsPromise = this.loadPlaylistElements(playlistId) | |
13 | ||
14 | let playlistResponse: Response | |
15 | let isResponseOk: boolean | |
16 | ||
17 | try { | |
18 | playlistResponse = await playlistPromise | |
19 | isResponseOk = playlistResponse.status === HttpStatusCode.OK_200 | |
20 | } catch (err) { | |
21 | console.error(err) | |
22 | isResponseOk = false | |
23 | } | |
24 | ||
25 | if (!isResponseOk) { | |
26 | if (playlistResponse?.status === HttpStatusCode.NOT_FOUND_404) { | |
27 | throw new Error('This playlist does not exist.') | |
28 | } | |
29 | ||
30 | throw new Error('We cannot fetch the playlist. Please try again later.') | |
31 | } | |
32 | ||
33 | return { playlistResponse, videosResponse: await playlistElementsPromise } | |
34 | } | |
35 | ||
36 | async loadAllPlaylistVideos (playlistId: string, baseResult: ResultList<VideoPlaylistElement>) { | |
37 | let elements = baseResult.data | |
38 | let total = baseResult.total | |
39 | let i = 0 | |
40 | ||
41 | while (total > elements.length && i < 10) { | |
42 | const result = await this.loadPlaylistElements(playlistId, elements.length) | |
43 | ||
44 | const json = await result.json() | |
45 | total = json.total | |
46 | ||
47 | elements = elements.concat(json.data) | |
48 | i++ | |
49 | } | |
50 | ||
51 | if (i === 10) { | |
52 | console.error('Cannot fetch all playlists elements, there are too many!') | |
53 | } | |
54 | ||
55 | return elements | |
56 | } | |
57 | ||
58 | private loadPlaylistInfo (playlistId: string): Promise<Response> { | |
59 | return this.http.fetch(this.getPlaylistUrl(playlistId), { optionalAuth: true }) | |
60 | } | |
61 | ||
62 | private loadPlaylistElements (playlistId: string, start = 0): Promise<Response> { | |
63 | const url = new URL(this.getPlaylistUrl(playlistId) + '/videos') | |
64 | url.search = new URLSearchParams({ start: '' + start, count: '100' }).toString() | |
65 | ||
66 | return this.http.fetch(url.toString(), { optionalAuth: true }) | |
67 | } | |
68 | ||
69 | private getPlaylistUrl (id: string) { | |
70 | return window.location.origin + '/api/v1/video-playlists/' + id | |
71 | } | |
72 | } |