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peertube/server/controllers/download.ts
2021-02-18 13:38:09 +01:00

78 lines
2.8 KiB
TypeScript

import * as cors from 'cors'
import * as express from 'express'
import { VideosTorrentCache } from '@server/lib/files-cache/videos-torrent-cache'
import { getVideoFilePath } from '@server/lib/video-paths'
import { MVideoFile, MVideoFullLight } from '@server/types/models'
import { HttpStatusCode } from '@shared/core-utils/miscs/http-error-codes'
import { VideoStreamingPlaylistType } from '@shared/models'
import { STATIC_DOWNLOAD_PATHS } from '../initializers/constants'
import { asyncMiddleware, videosDownloadValidator } from '../middlewares'
const downloadRouter = express.Router()
downloadRouter.use(cors())
downloadRouter.use(
STATIC_DOWNLOAD_PATHS.TORRENTS + ':filename',
downloadTorrent
)
downloadRouter.use(
STATIC_DOWNLOAD_PATHS.VIDEOS + ':id-:resolution([0-9]+).:extension',
asyncMiddleware(videosDownloadValidator),
downloadVideoFile
)
downloadRouter.use(
STATIC_DOWNLOAD_PATHS.HLS_VIDEOS + ':id-:resolution([0-9]+)-fragmented.:extension',
asyncMiddleware(videosDownloadValidator),
downloadHLSVideoFile
)
// ---------------------------------------------------------------------------
export {
downloadRouter
}
// ---------------------------------------------------------------------------
async function downloadTorrent (req: express.Request, res: express.Response) {
const result = await VideosTorrentCache.Instance.getFilePath(req.params.filename)
if (!result) return res.sendStatus(HttpStatusCode.NOT_FOUND_404)
return res.download(result.path, result.downloadName)
}
function downloadVideoFile (req: express.Request, res: express.Response) {
const video = res.locals.videoAll
const videoFile = getVideoFile(req, video.VideoFiles)
if (!videoFile) return res.status(HttpStatusCode.NOT_FOUND_404).end()
return res.download(getVideoFilePath(video, videoFile), `${video.name}-${videoFile.resolution}p${videoFile.extname}`)
}
function downloadHLSVideoFile (req: express.Request, res: express.Response) {
const video = res.locals.videoAll
const playlist = getHLSPlaylist(video)
if (!playlist) return res.status(HttpStatusCode.NOT_FOUND_404).end
const videoFile = getVideoFile(req, playlist.VideoFiles)
if (!videoFile) return res.status(HttpStatusCode.NOT_FOUND_404).end()
const filename = `${video.name}-${videoFile.resolution}p-${playlist.getStringType()}${videoFile.extname}`
return res.download(getVideoFilePath(playlist, videoFile), filename)
}
function getVideoFile (req: express.Request, files: MVideoFile[]) {
const resolution = parseInt(req.params.resolution, 10)
return files.find(f => f.resolution === resolution)
}
function getHLSPlaylist (video: MVideoFullLight) {
const playlist = video.VideoStreamingPlaylists.find(p => p.type === VideoStreamingPlaylistType.HLS)
if (!playlist) return undefined
return Object.assign(playlist, { Video: video })
}