Add blacklist reason field

server/helpers/custom-validators/video-blacklist.ts

@@ -0,0 +1,32 @@
+import { Response } from 'express'
+import * as validator from 'validator'
+import { CONSTRAINTS_FIELDS } from '../../initializers'
+import { VideoBlacklistModel } from '../../models/video/video-blacklist'
+
+const VIDEO_BLACKLIST_CONSTRAINTS_FIELDS = CONSTRAINTS_FIELDS.VIDEO_BLACKLIST
+
+function isVideoBlacklistReasonValid (value: string) {
+  return value === null || validator.isLength(value, VIDEO_BLACKLIST_CONSTRAINTS_FIELDS.REASON)
+}
+
+async function isVideoBlacklistExist (videoId: number, res: Response) {
+  const videoBlacklist = await VideoBlacklistModel.loadByVideoId(videoId)
+
+  if (videoBlacklist === null) {
+    res.status(404)
+       .json({ error: 'Blacklisted video not found' })
+       .end()
+
+    return false
+  }
+
+  res.locals.videoBlacklist = videoBlacklist
+  return true
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  isVideoBlacklistReasonValid,
+  isVideoBlacklistExist
+}