import * as express from 'express' import { query, validationResult } from 'express-validator/check' import { logger } from '../../helpers/logger' function areValidationErrors (req: express.Request, res: express.Response) { const errors = validationResult(req) if (!errors.isEmpty()) { logger.warn('Incorrect request parameters', { path: req.originalUrl, err: errors.mapped() }) res.status(400).json({ errors: errors.mapped() }) return true } return false } function checkSort (sortableColumns: string[]) { return [ query('sort').optional().isIn(sortableColumns).withMessage('Should have correct sortable column'), (req: express.Request, res: express.Response, next: express.NextFunction) => { logger.debug('Checking sort parameters', { parameters: req.query }) if (areValidationErrors(req, res)) return return next() } ] } function createSortableColumns (sortableColumns: string[]) { const sortableColumnDesc = sortableColumns.map(sortableColumn => '-' + sortableColumn) return sortableColumns.concat(sortableColumnDesc) } // --------------------------------------------------------------------------- export { areValidationErrors, checkSort, createSortableColumns }