import * as express from 'express'
import { body, param, query } from 'express-validator'
import { isBooleanValid, isIdOrUUIDValid, toBooleanOrNull } from '../../../helpers/custom-validators/misc'
import { logger } from '../../../helpers/logger'
import { areValidationErrors } from '../utils'
import { isVideoBlacklistReasonValid, isVideoBlacklistTypeValid } from '../../../helpers/custom-validators/video-blacklist'
import { doesVideoBlacklistExist, doesVideoExist } from '../../../helpers/middlewares'

const videosBlacklistRemoveValidator = [
  param('videoId').custom(isIdOrUUIDValid).not().isEmpty().withMessage('Should have a valid videoId'),

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

    if (areValidationErrors(req, res)) return
    if (!await doesVideoExist(req.params.videoId, res)) return
    if (!await doesVideoBlacklistExist(res.locals.video.id, res)) return

    return next()
  }
]

const videosBlacklistAddValidator = [
  param('videoId').custom(isIdOrUUIDValid).not().isEmpty().withMessage('Should have a valid videoId'),
  body('unfederate')
    .optional()
    .customSanitizer(toBooleanOrNull)
    .custom(isBooleanValid).withMessage('Should have a valid unfederate boolean'),
  body('reason')
    .optional()
    .custom(isVideoBlacklistReasonValid).withMessage('Should have a valid reason'),

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

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

    const video = res.locals.video
    if (req.body.unfederate === true && video.remote === true) {
      return res
        .status(409)
        .send({ error: 'You cannot unfederate a remote video.' })
        .end()
    }

    return next()
  }
]

const videosBlacklistUpdateValidator = [
  param('videoId').custom(isIdOrUUIDValid).not().isEmpty().withMessage('Should have a valid videoId'),
  body('reason')
    .optional()
    .custom(isVideoBlacklistReasonValid).withMessage('Should have a valid reason'),

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

    if (areValidationErrors(req, res)) return
    if (!await doesVideoExist(req.params.videoId, res)) return
    if (!await doesVideoBlacklistExist(res.locals.video.id, res)) return

    return next()
  }
]

const videosBlacklistFiltersValidator = [
  query('type')
    .optional()
    .custom(isVideoBlacklistTypeValid).withMessage('Should have a valid video blacklist type attribute'),

  (req: express.Request, res: express.Response, next: express.NextFunction) => {
    logger.debug('Checking videos blacklist filters query', { parameters: req.query })

    if (areValidationErrors(req, res)) return

    return next()
  }
]

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

export {
  videosBlacklistAddValidator,
  videosBlacklistRemoveValidator,
  videosBlacklistUpdateValidator,
  videosBlacklistFiltersValidator
}