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import { remove } from 'fs-extra'
import { extname, join } from 'path'
import { buildUUID } from '@shared/core-utils/uuid'
import { extractVideo } from '@server/helpers/video'
import { CONFIG } from '@server/initializers/config'
import {
MStreamingPlaylistVideo,
MVideo,
MVideoFile,
MVideoFileStreamingPlaylistVideo,
MVideoFileVideo,
MVideoUUID
} from '@server/types/models'
import { VideoStorage } from '@shared/models'
import { makeHLSFileAvailable, makeWebTorrentFileAvailable } from './object-storage'
import { getHLSDirectory, getHLSRedundancyDirectory, getHlsResolutionPlaylistFilename } from './paths'
type MakeAvailableCB <T> = (path: string) => Promise<T> | T
class VideoPathManager {
private static instance: VideoPathManager
private constructor () {}
getFSHLSOutputPath (video: MVideoUUID, filename?: string) {
const base = getHLSDirectory(video)
if (!filename) return base
return join(base, filename)
}
getFSRedundancyVideoFilePath (videoOrPlaylist: MVideo | MStreamingPlaylistVideo, videoFile: MVideoFile) {
if (videoFile.isHLS()) {
const video = extractVideo(videoOrPlaylist)
return join(getHLSRedundancyDirectory(video), videoFile.filename)
}
return join(CONFIG.STORAGE.REDUNDANCY_DIR, videoFile.filename)
}
getFSVideoFileOutputPath (videoOrPlaylist: MVideo | MStreamingPlaylistVideo, videoFile: MVideoFile) {
if (videoFile.isHLS()) {
const video = extractVideo(videoOrPlaylist)
return join(getHLSDirectory(video), videoFile.filename)
}
return join(CONFIG.STORAGE.VIDEOS_DIR, videoFile.filename)
}
async makeAvailableVideoFile <T> (videoFile: MVideoFileVideo | MVideoFileStreamingPlaylistVideo, cb: MakeAvailableCB<T>) {
if (videoFile.storage === VideoStorage.FILE_SYSTEM) {
return this.makeAvailableFactory(
() => this.getFSVideoFileOutputPath(videoFile.getVideoOrStreamingPlaylist(), videoFile),
false,
cb
)
}
const destination = this.buildTMPDestination(videoFile.filename)
if (videoFile.isHLS()) {
const playlist = (videoFile as MVideoFileStreamingPlaylistVideo).VideoStreamingPlaylist
return this.makeAvailableFactory(
() => makeHLSFileAvailable(playlist, videoFile.filename, destination),
true,
cb
)
}
return this.makeAvailableFactory(
() => makeWebTorrentFileAvailable(videoFile.filename, destination),
true,
cb
)
}
async makeAvailableResolutionPlaylistFile <T> (videoFile: MVideoFileStreamingPlaylistVideo, cb: MakeAvailableCB<T>) {
const filename = getHlsResolutionPlaylistFilename(videoFile.filename)
if (videoFile.storage === VideoStorage.FILE_SYSTEM) {
return this.makeAvailableFactory(
() => join(getHLSDirectory(videoFile.getVideo()), filename),
false,
cb
)
}
const playlist = videoFile.VideoStreamingPlaylist
return this.makeAvailableFactory(
() => makeHLSFileAvailable(playlist, filename, this.buildTMPDestination(filename)),
true,
cb
)
}
async makeAvailablePlaylistFile <T> (playlist: MStreamingPlaylistVideo, filename: string, cb: MakeAvailableCB<T>) {
if (playlist.storage === VideoStorage.FILE_SYSTEM) {
return this.makeAvailableFactory(
() => join(getHLSDirectory(playlist.Video), filename),
false,
cb
)
}
return this.makeAvailableFactory(
() => makeHLSFileAvailable(playlist, filename, this.buildTMPDestination(filename)),
true,
cb
)
}
private async makeAvailableFactory <T> (method: () => Promise<string> | string, clean: boolean, cb: MakeAvailableCB<T>) {
let result: T
const destination = await method()
try {
result = await cb(destination)
} catch (err) {
if (destination && clean) await remove(destination)
throw err
}
if (clean) await remove(destination)
return result
}
private buildTMPDestination (filename: string) {
return join(CONFIG.STORAGE.TMP_DIR, buildUUID() + extname(filename))
}
static get Instance () {
return this.instance || (this.instance = new this())
}
}
// ---------------------------------------------------------------------------
export {
VideoPathManager
}
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