Basic video redundancy implementation

server/middlewares/validators/redundancy.ts

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+import * as express from 'express'
+import 'express-validator'
+import { param, body } from 'express-validator/check'
+import { exists, isBooleanValid, isIdOrUUIDValid, toIntOrNull } from '../../helpers/custom-validators/misc'
+import { isVideoExist } from '../../helpers/custom-validators/videos'
+import { logger } from '../../helpers/logger'
+import { areValidationErrors } from './utils'
+import { VideoModel } from '../../models/video/video'
+import { VideoRedundancyModel } from '../../models/redundancy/video-redundancy'
+import { isHostValid } from '../../helpers/custom-validators/servers'
+import { getServerActor } from '../../helpers/utils'
+import { ActorFollowModel } from '../../models/activitypub/actor-follow'
+import { SERVER_ACTOR_NAME } from '../../initializers'
+import { ServerModel } from '../../models/server/server'
+
+const videoRedundancyGetValidator = [
+  param('videoId').custom(isIdOrUUIDValid).not().isEmpty().withMessage('Should have a valid video id'),
+  param('resolution')
+    .customSanitizer(toIntOrNull)
+    .custom(exists).withMessage('Should have a valid resolution'),
+  param('fps')
+    .optional()
+    .customSanitizer(toIntOrNull)
+    .custom(exists).withMessage('Should have a valid fps'),
+
+  async (req: express.Request, res: express.Response, next: express.NextFunction) => {
+    logger.debug('Checking videoRedundancyGetValidator parameters', { parameters: req.params })
+
+    if (areValidationErrors(req, res)) return
+    if (!await isVideoExist(req.params.videoId, res)) return
+
+    const video: VideoModel = res.locals.video
+    const videoFile = video.VideoFiles.find(f => {
+      return f.resolution === req.params.resolution && (!req.params.fps || f.fps === req.params.fps)
+    })
+
+    if (!videoFile) return res.status(404).json({ error: 'Video file not found.' })
+    res.locals.videoFile = videoFile
+
+    const videoRedundancy = await VideoRedundancyModel.loadByFileId(videoFile.id)
+    if (!videoRedundancy)return res.status(404).json({ error: 'Video redundancy not found.' })
+    res.locals.videoRedundancy = videoRedundancy
+
+    return next()
+  }
+]
+
+const updateServerRedundancyValidator = [
+  param('host').custom(isHostValid).withMessage('Should have a valid host'),
+  body('redundancyAllowed')
+    .toBoolean()
+    .custom(isBooleanValid).withMessage('Should have a valid redundancyAllowed attribute'),
+
+  async (req: express.Request, res: express.Response, next: express.NextFunction) => {
+    logger.debug('Checking updateServerRedundancy parameters', { parameters: req.params })
+
+    if (areValidationErrors(req, res)) return
+
+    const server = await ServerModel.loadByHost(req.params.host)
+
+    if (!server) {
+      return res
+        .status(404)
+        .json({
+          error: `Server ${req.params.host} not found.`
+        })
+        .end()
+    }
+
+    res.locals.server = server
+    return next()
+  }
+]
+
+// ---------------------------------------------------------------------------
+
+export {
+  videoRedundancyGetValidator,
+  updateServerRedundancyValidator
+}