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import * as express from 'express'
import { query } from 'express-validator/check'
import { join } from 'path'
import { isTestInstance } from '../../helpers/core-utils'
import { isIdOrUUIDValid } from '../../helpers/custom-validators/misc'
import { logger } from '../../helpers/logger'
import { areValidationErrors } from './utils'
import { WEBSERVER } from '../../initializers/constants'
import { doesVideoExist } from '../../helpers/middlewares'
const urlShouldStartWith = WEBSERVER.SCHEME + '://' + join(WEBSERVER.HOST, 'videos', 'watch') + '/'
const videoWatchRegex = new RegExp('([^/]+)$')
const isURLOptions = {
require_host: true,
require_tld: true
}
// We validate 'localhost', so we don't have the top level domain
if (isTestInstance()) {
isURLOptions.require_tld = false
}
const oembedValidator = [
query('url').isURL(isURLOptions).withMessage('Should have a valid url'),
query('maxwidth').optional().isInt().withMessage('Should have a valid max width'),
query('maxheight').optional().isInt().withMessage('Should have a valid max height'),
query('format').optional().isIn([ 'xml', 'json' ]).withMessage('Should have a valid format'),
async (req: express.Request, res: express.Response, next: express.NextFunction) => {
logger.debug('Checking oembed parameters', { parameters: req.query })
if (areValidationErrors(req, res)) return
if (req.query.format !== undefined && req.query.format !== 'json') {
return res.status(501)
.json({ error: 'Requested format is not implemented on server.' })
.end()
}
const startIsOk = req.query.url.startsWith(urlShouldStartWith)
const matches = videoWatchRegex.exec(req.query.url)
if (startIsOk === false || matches === null) {
return res.status(400)
.json({ error: 'Invalid url.' })
.end()
}
const videoId = matches[1]
if (isIdOrUUIDValid(videoId) === false) {
return res.status(400)
.json({ error: 'Invalid video id.' })
.end()
}
if (!await doesVideoExist(videoId, res)) return
return next()
}
]
// ---------------------------------------------------------------------------
export {
oembedValidator
}
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