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path: root/server/middlewares/validators/videos/video-transcoding.ts
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import express from 'express'
import { body } from 'express-validator'
import { isValidCreateTranscodingType } from '@server/helpers/custom-validators/video-transcoding'
import { CONFIG } from '@server/initializers/config'
import { VideoJobInfoModel } from '@server/models/video/video-job-info'
import { HttpStatusCode } from '@shared/models'
import { logger } from '../../../helpers/logger'
import { areValidationErrors, doesVideoExist, isValidVideoIdParam } from '../shared'

const createTranscodingValidator = [
  isValidVideoIdParam('videoId'),

  body('transcodingType')
    .custom(isValidCreateTranscodingType).withMessage('Should have a valid transcoding type'),

  async (req: express.Request, res: express.Response, next: express.NextFunction) => {
    logger.debug('Checking createTranscodingValidator parameters', { parameters: req.body })

    if (areValidationErrors(req, res)) return
    if (!await doesVideoExist(req.params.videoId, res, 'all')) return

    const video = res.locals.videoAll

    if (video.remote) {
      return res.fail({
        status: HttpStatusCode.BAD_REQUEST_400,
        message: 'Cannot run transcoding job on a remote video'
      })
    }

    if (CONFIG.TRANSCODING.ENABLED !== true) {
      return res.fail({
        status: HttpStatusCode.BAD_REQUEST_400,
        message: 'Cannot run transcoding job because transcoding is disabled on this instance'
      })
    }

    // Prefer using job info table instead of video state because before 4.0 failed transcoded video were stuck in "TO_TRANSCODE" state
    const info = await VideoJobInfoModel.load(video.id)
    if (info && info.pendingTranscode > 0) {
      return res.fail({
        status: HttpStatusCode.CONFLICT_409,
        message: 'This video is already being transcoded'
      })
    }

    return next()
  }
]

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

export {
  createTranscodingValidator
}