diff options
Diffstat (limited to 'client/src/standalone/videos/shared/playlist-tracker.ts')
-rw-r--r-- | client/src/standalone/videos/shared/playlist-tracker.ts | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/client/src/standalone/videos/shared/playlist-tracker.ts b/client/src/standalone/videos/shared/playlist-tracker.ts new file mode 100644 index 000000000..75d10b4e2 --- /dev/null +++ b/client/src/standalone/videos/shared/playlist-tracker.ts | |||
@@ -0,0 +1,93 @@ | |||
1 | import { VideoPlaylist, VideoPlaylistElement } from '../../../../../shared/models' | ||
2 | |||
3 | export class PlaylistTracker { | ||
4 | private currentPlaylistElement: VideoPlaylistElement | ||
5 | |||
6 | constructor ( | ||
7 | private readonly playlist: VideoPlaylist, | ||
8 | private readonly playlistElements: VideoPlaylistElement[] | ||
9 | ) { | ||
10 | |||
11 | } | ||
12 | |||
13 | getPlaylist () { | ||
14 | return this.playlist | ||
15 | } | ||
16 | |||
17 | getPlaylistElements () { | ||
18 | return this.playlistElements | ||
19 | } | ||
20 | |||
21 | hasNextPlaylistElement (position?: number) { | ||
22 | return !!this.getNextPlaylistElement(position) | ||
23 | } | ||
24 | |||
25 | getNextPlaylistElement (position?: number): VideoPlaylistElement { | ||
26 | if (!position) position = this.currentPlaylistElement.position + 1 | ||
27 | |||
28 | if (position > this.playlist.videosLength) { | ||
29 | return undefined | ||
30 | } | ||
31 | |||
32 | const next = this.playlistElements.find(e => e.position === position) | ||
33 | |||
34 | if (!next || !next.video) { | ||
35 | return this.getNextPlaylistElement(position + 1) | ||
36 | } | ||
37 | |||
38 | return next | ||
39 | } | ||
40 | |||
41 | hasPreviousPlaylistElement (position?: number) { | ||
42 | return !!this.getPreviousPlaylistElement(position) | ||
43 | } | ||
44 | |||
45 | getPreviousPlaylistElement (position?: number): VideoPlaylistElement { | ||
46 | if (!position) position = this.currentPlaylistElement.position - 1 | ||
47 | |||
48 | if (position < 1) { | ||
49 | return undefined | ||
50 | } | ||
51 | |||
52 | const prev = this.playlistElements.find(e => e.position === position) | ||
53 | |||
54 | if (!prev || !prev.video) { | ||
55 | return this.getNextPlaylistElement(position - 1) | ||
56 | } | ||
57 | |||
58 | return prev | ||
59 | } | ||
60 | |||
61 | nextVideoTitle () { | ||
62 | const next = this.getNextPlaylistElement() | ||
63 | if (!next) return '' | ||
64 | |||
65 | return next.video.name | ||
66 | } | ||
67 | |||
68 | setPosition (position: number) { | ||
69 | this.currentPlaylistElement = this.playlistElements.find(e => e.position === position) | ||
70 | if (!this.currentPlaylistElement || !this.currentPlaylistElement.video) { | ||
71 | console.error('Current playlist element is not valid.', this.currentPlaylistElement) | ||
72 | this.currentPlaylistElement = this.getNextPlaylistElement() | ||
73 | } | ||
74 | |||
75 | if (!this.currentPlaylistElement) { | ||
76 | throw new Error('This playlist does not have any valid element') | ||
77 | } | ||
78 | } | ||
79 | |||
80 | setCurrentElement (playlistElement: VideoPlaylistElement) { | ||
81 | this.currentPlaylistElement = playlistElement | ||
82 | } | ||
83 | |||
84 | getCurrentElement () { | ||
85 | return this.currentPlaylistElement | ||
86 | } | ||
87 | |||
88 | getCurrentPosition () { | ||
89 | if (!this.currentPlaylistElement) return -1 | ||
90 | |||
91 | return this.currentPlaylistElement.position | ||
92 | } | ||
93 | } | ||