server/middlewares/validators/video-channels.ts

   1 import { body, param } from 'express-validator/check'
   2 import * as express from 'express'
   3
   4 import { checkErrors } from './utils'
   5 import { database as db } from '../../initializers'
   6 import {
   7   logger,
   8   isIdOrUUIDValid,
   9   isVideoChannelDescriptionValid,
  10   isVideoChannelNameValid,
  11   checkVideoChannelExists,
  12   checkVideoAuthorExists
  13 } from '../../helpers'
  14 import { UserInstance } from '../../models'
  15 import { UserRight } from '../../../shared'
  16
  17 const listVideoAuthorChannelsValidator = [
  18   param('authorId').custom(isIdOrUUIDValid).withMessage('Should have a valid author id'),
  19
  20   (req: express.Request, res: express.Response, next: express.NextFunction) => {
  21     logger.debug('Checking listVideoAuthorChannelsValidator parameters', { parameters: req.body })
  22
  23     checkErrors(req, res, () => {
  24       checkVideoAuthorExists(req.params.authorId, res, next)
  25     })
  26   }
  27 ]
  28
  29 const videoChannelsAddValidator = [
  30   body('name').custom(isVideoChannelNameValid).withMessage('Should have a valid name'),
  31   body('description').custom(isVideoChannelDescriptionValid).withMessage('Should have a valid description'),
  32
  33   (req: express.Request, res: express.Response, next: express.NextFunction) => {
  34     logger.debug('Checking videoChannelsAdd parameters', { parameters: req.body })
  35
  36     checkErrors(req, res, next)
  37   }
  38 ]
  39
  40 const videoChannelsUpdateValidator = [
  41   param('id').custom(isIdOrUUIDValid).not().isEmpty().withMessage('Should have a valid id'),
  42   body('name').optional().custom(isVideoChannelNameValid).withMessage('Should have a valid name'),
  43   body('description').optional().custom(isVideoChannelDescriptionValid).withMessage('Should have a valid description'),
  44
  45   (req: express.Request, res: express.Response, next: express.NextFunction) => {
  46     logger.debug('Checking videoChannelsUpdate parameters', { parameters: req.body })
  47
  48     checkErrors(req, res, () => {
  49       checkVideoChannelExists(req.params.id, res, () => {
  50         // We need to make additional checks
  51         if (res.locals.videoChannel.isOwned() === false) {
  52           return res.status(403)
  53             .json({ error: 'Cannot update video channel of another pod' })
  54             .end()
  55         }
  56
  57         if (res.locals.videoChannel.Author.userId !== res.locals.oauth.token.User.id) {
  58           return res.status(403)
  59             .json({ error: 'Cannot update video channel of another user' })
  60             .end()
  61         }
  62
  63         next()
  64       })
  65     })
  66   }
  67 ]
  68
  69 const videoChannelsRemoveValidator = [
  70   param('id').custom(isIdOrUUIDValid).not().isEmpty().withMessage('Should have a valid id'),
  71
  72   (req: express.Request, res: express.Response, next: express.NextFunction) => {
  73     logger.debug('Checking videoChannelsRemove parameters', { parameters: req.params })
  74
  75     checkErrors(req, res, () => {
  76       checkVideoChannelExists(req.params.id, res, () => {
  77         // Check if the user who did the request is able to delete the video
  78         checkUserCanDeleteVideoChannel(res, () => {
  79           checkVideoChannelIsNotTheLastOne(res, next)
  80         })
  81       })
  82     })
  83   }
  84 ]
  85
  86 const videoChannelGetValidator = [
  87   param('id').custom(isIdOrUUIDValid).not().isEmpty().withMessage('Should have a valid id'),
  88
  89   (req: express.Request, res: express.Response, next: express.NextFunction) => {
  90     logger.debug('Checking videoChannelsGet parameters', { parameters: req.params })
  91
  92     checkErrors(req, res, () => {
  93       checkVideoChannelExists(req.params.id, res, next)
  94     })
  95   }
  96 ]
  97
  98 // ---------------------------------------------------------------------------
  99
 100 export {
 101   listVideoAuthorChannelsValidator,
 102   videoChannelsAddValidator,
 103   videoChannelsUpdateValidator,
 104   videoChannelsRemoveValidator,
 105   videoChannelGetValidator
 106 }
 107
 108 // ---------------------------------------------------------------------------
 109
 110 function checkUserCanDeleteVideoChannel (res: express.Response, callback: () => void) {
 111   const user: UserInstance = res.locals.oauth.token.User
 112
 113   // Retrieve the user who did the request
 114   if (res.locals.videoChannel.isOwned() === false) {
 115     return res.status(403)
 116               .json({ error: 'Cannot remove video channel of another pod.' })
 117               .end()
 118   }
 119
 120   // Check if the user can delete the video channel
 121   // The user can delete it if s/he is an admin
 122   // Or if s/he is the video channel's author
 123   if (user.hasRight(UserRight.REMOVE_ANY_VIDEO_CHANNEL) === false && res.locals.videoChannel.Author.userId !== user.id) {
 124     return res.status(403)
 125               .json({ error: 'Cannot remove video channel of another user' })
 126               .end()
 127   }
 128
 129   // If we reach this comment, we can delete the video
 130   callback()
 131 }
 132
 133 function checkVideoChannelIsNotTheLastOne (res: express.Response, callback: () => void) {
 134   db.VideoChannel.countByAuthor(res.locals.oauth.token.User.Author.id)
 135     .then(count => {
 136       if (count <= 1) {
 137         return res.status(409)
 138           .json({ error: 'Cannot remove the last channel of this user' })
 139           .end()
 140       }
 141
 142       callback()
 143     })
 144 }