joystream/storage-node/packages/colossus/lib/middleware/file_uploads.js

/*
 * This file is part of the storage node for the Joystream project.
 * Copyright (C) 2019 Joystream Contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

'use strict';

const multer = require('multer');

// Taken from express-openapi examples
module.exports = function(req, res, next)
{
  multer().any()(req, res, function(err) {
    if (err) {
      return next(err);
    }
    // Handle both single and multiple files
    const filesMap = req.files.reduce(
      (acc, f) =>
        Object.assign(acc, {
          [f.fieldname]: (acc[f.fieldname] || []).concat(f)
        }),
      {}
    );
    Object.keys(filesMap).forEach((fieldname) => {
      const files = filesMap[fieldname];
      req.body[fieldname] = files.length > 1 ? files.map(() => '') : '';
    });
    return next();
  });
}