From c6c0fa6cd8fe8f752463d8982c3dbcd448739c4e Mon Sep 17 00:00:00 2001
From: Chocobozzz <me@florianbigard.com>
Date: Thu, 17 Sep 2020 09:20:52 +0200
Subject: Live streaming implementation first step

---
 server/controllers/api/videos/live.ts | 116 ++++++++++++++++++++++++++++++++++
 1 file changed, 116 insertions(+)
 create mode 100644 server/controllers/api/videos/live.ts

(limited to 'server/controllers/api/videos/live.ts')

diff --git a/server/controllers/api/videos/live.ts b/server/controllers/api/videos/live.ts
new file mode 100644
index 000000000..d08ef9869
--- /dev/null
+++ b/server/controllers/api/videos/live.ts
@@ -0,0 +1,116 @@
+import * as express from 'express'
+import { v4 as uuidv4 } from 'uuid'
+import { createReqFiles } from '@server/helpers/express-utils'
+import { CONFIG } from '@server/initializers/config'
+import { ASSETS_PATH, MIMETYPES } from '@server/initializers/constants'
+import { getVideoActivityPubUrl } from '@server/lib/activitypub/url'
+import { videoLiveAddValidator, videoLiveGetValidator } from '@server/middlewares/validators/videos/video-live'
+import { VideoLiveModel } from '@server/models/video/video-live'
+import { MVideoDetails, MVideoFullLight } from '@server/types/models'
+import { VideoCreate, VideoPrivacy, VideoState } from '../../../../shared'
+import { ThumbnailType } from '../../../../shared/models/videos/thumbnail.type'
+import { logger } from '../../../helpers/logger'
+import { sequelizeTypescript } from '../../../initializers/database'
+import { createVideoMiniatureFromExisting } from '../../../lib/thumbnail'
+import { asyncMiddleware, asyncRetryTransactionMiddleware, authenticate } from '../../../middlewares'
+import { TagModel } from '../../../models/video/tag'
+import { VideoModel } from '../../../models/video/video'
+import { buildLocalVideoFromCreate } from '@server/lib/video'
+
+const liveRouter = express.Router()
+
+const reqVideoFileLive = createReqFiles(
+  [ 'thumbnailfile', 'previewfile' ],
+  MIMETYPES.IMAGE.MIMETYPE_EXT,
+  {
+    thumbnailfile: CONFIG.STORAGE.TMP_DIR,
+    previewfile: CONFIG.STORAGE.TMP_DIR
+  }
+)
+
+liveRouter.post('/live',
+  authenticate,
+  reqVideoFileLive,
+  asyncMiddleware(videoLiveAddValidator),
+  asyncRetryTransactionMiddleware(addLiveVideo)
+)
+
+liveRouter.get('/live/:videoId',
+  authenticate,
+  asyncMiddleware(videoLiveGetValidator),
+  asyncRetryTransactionMiddleware(getVideoLive)
+)
+
+// ---------------------------------------------------------------------------
+
+export {
+  liveRouter
+}
+
+// ---------------------------------------------------------------------------
+
+async function getVideoLive (req: express.Request, res: express.Response) {
+  const videoLive = res.locals.videoLive
+
+  return res.json(videoLive.toFormattedJSON())
+}
+
+async function addLiveVideo (req: express.Request, res: express.Response) {
+  const videoInfo: VideoCreate = req.body
+
+  // Prepare data so we don't block the transaction
+  const videoData = buildLocalVideoFromCreate(videoInfo, res.locals.videoChannel.id)
+  videoData.isLive = true
+
+  const videoLive = new VideoLiveModel()
+  videoLive.streamKey = uuidv4()
+
+  const video = new VideoModel(videoData) as MVideoDetails
+  video.url = getVideoActivityPubUrl(video) // We use the UUID, so set the URL after building the object
+
+  // Process thumbnail or create it from the video
+  const thumbnailField = req.files ? req.files['thumbnailfile'] : null
+  const thumbnailModel = thumbnailField
+    ? await createVideoMiniatureFromExisting(thumbnailField[0].path, video, ThumbnailType.MINIATURE, false)
+    : await createVideoMiniatureFromExisting(ASSETS_PATH.DEFAULT_LIVE_BACKGROUND, video, ThumbnailType.MINIATURE, true)
+
+  // Process preview or create it from the video
+  const previewField = req.files ? req.files['previewfile'] : null
+  const previewModel = previewField
+    ? await createVideoMiniatureFromExisting(previewField[0].path, video, ThumbnailType.PREVIEW, false)
+    : await createVideoMiniatureFromExisting(ASSETS_PATH.DEFAULT_LIVE_BACKGROUND, video, ThumbnailType.PREVIEW, true)
+
+  const { videoCreated } = await sequelizeTypescript.transaction(async t => {
+    const sequelizeOptions = { transaction: t }
+
+    const videoCreated = await video.save(sequelizeOptions) as MVideoFullLight
+
+    if (thumbnailModel) await videoCreated.addAndSaveThumbnail(thumbnailModel, t)
+    if (previewModel) await videoCreated.addAndSaveThumbnail(previewModel, t)
+
+    // Do not forget to add video channel information to the created video
+    videoCreated.VideoChannel = res.locals.videoChannel
+
+    videoLive.videoId = videoCreated.id
+    await videoLive.save(sequelizeOptions)
+
+    // Create tags
+    if (videoInfo.tags !== undefined) {
+      const tagInstances = await TagModel.findOrCreateTags(videoInfo.tags, t)
+
+      await video.$set('Tags', tagInstances, sequelizeOptions)
+      video.Tags = tagInstances
+    }
+
+    logger.info('Video live %s with uuid %s created.', videoInfo.name, videoCreated.uuid)
+
+    return { videoCreated }
+  })
+
+  return res.json({
+    video: {
+      id: videoCreated.id,
+      uuid: videoCreated.uuid
+    }
+  })
+}
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