Changing defaults MUC affiliation (#385):

* For Peertube moderators/admins, we add a button "Promote". Clicking on it will promote them as MUC owner.

server/lib/routers/api/promote.ts

@@ -0,0 +1,53 @@
+import type { RegisterServerOptions } from '@peertube/peertube-types'
+import type { Router, Request, Response, NextFunction } from 'express'
+import type { Affiliations } from '../../prosody/config/affiliations'
+import { asyncMiddleware } from '../../middlewares/async'
+import { isUserAdminOrModerator } from '../../helpers'
+import { getProsodyDomain } from '../../prosody/config/domain'
+import { updateProsodyRoom } from '../../prosody/api/manage-rooms'
+
+async function initPromoteApiRouter (options: RegisterServerOptions, router: Router): Promise<void> {
+  const logger = options.peertubeHelpers.logger
+
+  router.put('/promote/:roomJID', asyncMiddleware(
+    async (req: Request, res: Response, _next: NextFunction): Promise<void> => {
+      try {
+        const roomJIDLocalPart = req.params.roomJID
+        const user = await options.peertubeHelpers.user.getAuthUser(res)
+
+        if (!user || !await isUserAdminOrModerator(options, res)) {
+          logger.warn('Current user tries to access the promote API for which he has no right.')
+          res.sendStatus(403)
+          return
+        }
+
+        if (!/^(channel\.\d+|(\w|-)+)$/.test(roomJIDLocalPart)) { // just check if it looks alright.
+          logger.warn('Current user tries to access the promote API using an invalid room key.')
+          res.sendStatus(400)
+          return
+        }
+
+        const normalizedUsername = user.username.toLowerCase()
+        const prosodyDomain = await getProsodyDomain(options)
+        const jid = normalizedUsername + '@' + prosodyDomain
+
+        const mucJID = roomJIDLocalPart + '@' + 'room.' + prosodyDomain
+
+        logger.info('We must give owner affiliation to ' + jid + ' on ' + mucJID)
+        const addAffiliations: Affiliations = {}
+        addAffiliations[jid] = 'owner'
+        await updateProsodyRoom(options, mucJID, {
+          addAffiliations
+        })
+        res.sendStatus(200)
+      } catch (err) {
+        logger.error(err)
+        res.sendStatus(500)
+      }
+    }
+  ))
+}
+
+export {
+  initPromoteApiRouter
+}