Give moderators access to edit channels (#4608)

* give admins access to edit all channels

closes #4598

* test(channels): +admin update another users channel

* Fix tests

* fix(server): delete another users channel

Since the channel owner isn't necessary the auth user we need to check
the right account whether it's the last video or not.

* REMOVE_ANY_VIDEO_CHANNEL > MANAGE_ANY_VIDEO_CHANNEL

Merge REMOVE_ANY_VIDEO_CHANNEL and MANY_VIDEO_CHANNELS to
MANAGE_ANY_VIDEO_CHANNEL.

* user-right: moderator can't manage admins channel

* client: MyVideoChannelCreateComponent > VideoChannelCreateComponent

* client: MyVideoChannelEdit > VideoChannelEdit

* Revert "user-right: moderator can't manage admins channel"

This reverts commit 2c627c154e2bfe6af2e0f45efb27faf4117572f3.

* server: clean dupl validator functionality

* fix ensureUserCanManageChannel usage

It's not async anymore.

* server: merge channel validator middleares

ensureAuthUserOwnsChannelValidator & ensureUserCanManageChannel gets
merged into one middleware.

* client(VideoChannelEdit): redirect to prev route

* fix(VideoChannels): handle anon users

* client: new routes for create/update channel

* Refactor channel validators

Co-authored-by: Chocobozzz <me@florianbigard.com>

3 files changed, 25 insertions, 59 deletions

diff --git a/server/middlewares/validators/shared/video-channels.ts b/server/middlewares/validators/shared/video-channels.ts
index 7c0c89267..bed9f5dbe 100644
--- a/server/middlewares/validators/shared/video-channels.ts
+++ b/server/middlewares/validators/shared/video-channels.ts
@@ -3,12 +3,6 @@ import { VideoChannelModel } from '@server/models/video/video-channel'
 import { MChannelBannerAccountDefault } from '@server/types/models'
 import { HttpStatusCode } from '@shared/models'
 
-async function doesLocalVideoChannelNameExist (name: string, res: express.Response) {
-  const videoChannel = await VideoChannelModel.loadLocalByNameAndPopulateAccount(name)
-
-  return processVideoChannelExist(videoChannel, res)
-}
-
 async function doesVideoChannelIdExist (id: number, res: express.Response) {
   const videoChannel = await VideoChannelModel.loadAndPopulateAccount(+id)
 
@@ -24,7 +18,6 @@ async function doesVideoChannelNameWithHostExist (nameWithDomain: string, res: e
 // ---------------------------------------------------------------------------
 
 export {
-  doesLocalVideoChannelNameExist,
   doesVideoChannelIdExist,
   doesVideoChannelNameWithHostExist
 }
diff --git a/server/middlewares/validators/users.ts b/server/middlewares/validators/users.ts
index 33b31d54b..7a6b2ce57 100644
--- a/server/middlewares/validators/users.ts
+++ b/server/middlewares/validators/users.ts
@@ -3,7 +3,7 @@ import { body, param, query } from 'express-validator'
 import { omit } from 'lodash'
 import { Hooks } from '@server/lib/plugins/hooks'
 import { MUserDefault } from '@server/types/models'
-import { HttpStatusCode, UserRegister, UserRole } from '@shared/models'
+import { HttpStatusCode, UserRegister, UserRight, UserRole } from '@shared/models'
 import { isBooleanValid, isIdValid, toBooleanOrNull, toIntOrNull } from '../../helpers/custom-validators/misc'
 import { isThemeNameValid } from '../../helpers/custom-validators/plugins'
 import {
@@ -490,14 +490,17 @@ const ensureAuthUserOwnsAccountValidator = [
   }
 ]
 
-const ensureAuthUserOwnsChannelValidator = [
+const ensureCanManageChannel = [
   (req: express.Request, res: express.Response, next: express.NextFunction) => {
-    const user = res.locals.oauth.token.User
+    const user = res.locals.oauth.token.user
+    const isUserOwner = res.locals.videoChannel.Account.userId === user.id
+
+    if (!isUserOwner && user.hasRight(UserRight.MANAGE_ANY_VIDEO_CHANNEL) === false) {
+      const message = `User ${user.username} does not have right to manage channel ${req.params.nameWithHost}.`
 
-    if (res.locals.videoChannel.Account.userId !== user.id) {
       return res.fail({
         status: HttpStatusCode.FORBIDDEN_403,
-        message: 'Only owner of this video channel can access this ressource'
+        message
       })
     }
 
@@ -542,8 +545,8 @@ export {
   usersVerifyEmailValidator,
   userAutocompleteValidator,
   ensureAuthUserOwnsAccountValidator,
-  ensureAuthUserOwnsChannelValidator,
-  ensureCanManageUser
+  ensureCanManageUser,
+  ensureCanManageChannel
 }
 
 // ---------------------------------------------------------------------------
diff --git a/server/middlewares/validators/videos/video-channels.ts b/server/middlewares/validators/videos/video-channels.ts
index edce48c7f..3bfdebbb1 100644
--- a/server/middlewares/validators/videos/video-channels.ts
+++ b/server/middlewares/validators/videos/video-channels.ts
@@ -1,7 +1,7 @@
 import express from 'express'
 import { body, param, query } from 'express-validator'
-import { MChannelAccountDefault, MUser } from '@server/types/models'
-import { UserRight } from '../../../../shared'
+import { CONFIG } from '@server/initializers/config'
+import { MChannelAccountDefault } from '@server/types/models'
 import { HttpStatusCode } from '../../../../shared/models/http/http-error-codes'
 import { isBooleanValid, toBooleanOrNull } from '../../../helpers/custom-validators/misc'
 import {
@@ -13,8 +13,7 @@ import {
 import { logger } from '../../../helpers/logger'
 import { ActorModel } from '../../../models/actor/actor'
 import { VideoChannelModel } from '../../../models/video/video-channel'
-import { areValidationErrors, doesLocalVideoChannelNameExist, doesVideoChannelNameWithHostExist } from '../shared'
-import { CONFIG } from '@server/initializers/config'
+import { areValidationErrors, doesVideoChannelNameWithHostExist } from '../shared'
 
 const videoChannelsAddValidator = [
   body('name').custom(isVideoChannelUsernameValid).withMessage('Should have a valid channel name'),
@@ -71,16 +70,10 @@ const videoChannelsUpdateValidator = [
 ]
 
 const videoChannelsRemoveValidator = [
-  param('nameWithHost').exists().withMessage('Should have an video channel name with host'),
-
   async (req: express.Request, res: express.Response, next: express.NextFunction) => {
     logger.debug('Checking videoChannelsRemove parameters', { parameters: req.params })
 
-    if (areValidationErrors(req, res)) return
-    if (!await doesVideoChannelNameWithHostExist(req.params.nameWithHost, res)) return
-
-    if (!checkUserCanDeleteVideoChannel(res.locals.oauth.token.User, res.locals.videoChannel, res)) return
-    if (!await checkVideoChannelIsNotTheLastOne(res)) return
+    if (!await checkVideoChannelIsNotTheLastOne(res.locals.videoChannel, res)) return
 
     return next()
   }
@@ -100,14 +93,14 @@ const videoChannelsNameWithHostValidator = [
   }
 ]
 
-const localVideoChannelValidator = [
-  param('name').custom(isVideoChannelDisplayNameValid).withMessage('Should have a valid video channel name'),
-
-  async (req: express.Request, res: express.Response, next: express.NextFunction) => {
-    logger.debug('Checking localVideoChannelValidator parameters', { parameters: req.params })
-
-    if (areValidationErrors(req, res)) return
-    if (!await doesLocalVideoChannelNameExist(req.params.name, res)) return
+const ensureIsLocalChannel = [
+  (req: express.Request, res: express.Response, next: express.NextFunction) => {
+    if (res.locals.videoChannel.Actor.isOwned() === false) {
+      return res.fail({
+        status: HttpStatusCode.FORBIDDEN_403,
+        message: 'This channel is not owned.'
+      })
+    }
 
     return next()
   }
@@ -144,38 +137,15 @@ export {
   videoChannelsUpdateValidator,
   videoChannelsRemoveValidator,
   videoChannelsNameWithHostValidator,
+  ensureIsLocalChannel,
   videoChannelsListValidator,
-  localVideoChannelValidator,
   videoChannelStatsValidator
 }
 
 // ---------------------------------------------------------------------------
 
-function checkUserCanDeleteVideoChannel (user: MUser, videoChannel: MChannelAccountDefault, res: express.Response) {
-  if (videoChannel.Actor.isOwned() === false) {
-    res.fail({
-      status: HttpStatusCode.FORBIDDEN_403,
-      message: 'Cannot remove video channel of another server.'
-    })
-    return false
-  }
-
-  // Check if the user can delete the video channel
-  // The user can delete it if s/he is an admin
-  // Or if s/he is the video channel's account
-  if (user.hasRight(UserRight.REMOVE_ANY_VIDEO_CHANNEL) === false && videoChannel.Account.userId !== user.id) {
-    res.fail({
-      status: HttpStatusCode.FORBIDDEN_403,
-      message: 'Cannot remove video channel of another user'
-    })
-    return false
-  }
-
-  return true
-}
-
-async function checkVideoChannelIsNotTheLastOne (res: express.Response) {
-  const count = await VideoChannelModel.countByAccount(res.locals.oauth.token.User.Account.id)
+async function checkVideoChannelIsNotTheLastOne (videoChannel: MChannelAccountDefault, res: express.Response) {
+  const count = await VideoChannelModel.countByAccount(videoChannel.Account.id)
 
   if (count <= 1) {
     res.fail({