// Copyright 2015, 2016 Ethcore (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/>.

function newError (state, action) {
  const { error } = action;

  return Object.assign({}, state, {
    visible: true,
    message: error.message,
    error
  });
}

function closeErrors (state, action) {
  return Object.assign({}, state, {
    visible: false,
    message: null
  });
}

export default function errorReducer (state = {}, action) {
  switch (action.type) {
    case 'newError':
      return newError(state, action);

    case 'closeErrors':
      return closeErrors(state, action);

    default:
      return state;
  }
}