peertube/server/helpers/middlewares/video-channels.ts

import * as express from 'express'
import { VideoChannelModel } from '../../models/video/video-channel'
import { MChannelAccountDefault } from '@server/typings/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)

  return processVideoChannelExist(videoChannel, res)
}

async function doesVideoChannelNameWithHostExist (nameWithDomain: string, res: express.Response) {
  const videoChannel = await VideoChannelModel.loadByNameWithHostAndPopulateAccount(nameWithDomain)

  return processVideoChannelExist(videoChannel, res)
}

// ---------------------------------------------------------------------------

export {
  doesLocalVideoChannelNameExist,
  doesVideoChannelIdExist,
  doesVideoChannelNameWithHostExist
}

function processVideoChannelExist (videoChannel: MChannelAccountDefault, res: express.Response) {
  if (!videoChannel) {
    res.status(404)
       .json({ error: 'Video channel not found' })
       .end()

    return false
  }

  res.locals.videoChannel = videoChannel
  return true
}