// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.

// Parity 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.

// Parity 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 Parity.  If not, see <http://www.gnu.org/licenses/>.

import { newError } from './actions';

function withError (formatter, type = 'default') {
  return (message) => {
    return {
      error: {
        message: formatter(message),
        type
      }
    };
  };
}

export default class ErrorsMiddleware {
  toMiddleware () {
    return (store) => (next) => (action) => {
      const { meta } = action;

      if (meta && meta.error) {
        next(newError(meta.error));
      }

      next(action);
    };
  }
}

export {
  withError
};