// 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/>.

import React, { Component, PropTypes } from 'react';

import { RadioButton, RadioButtonGroup } from 'material-ui/RadioButton';

import styles from './radioButtons.css';

export default class RadioButtons extends Component {
  static propTypes = {
    onChange: PropTypes.func.isRequired,
    values: PropTypes.array.isRequired,

    value: PropTypes.any,
    name: PropTypes.string
  };

  static defaultProps = {
    value: 0,
    name: ''
  };

  render () {
    const { value, values } = this.props;

    const index = Number.isNaN(parseInt(value))
      ? values.findIndex((val) => val.key === value)
      : parseInt(value);

    const selectedValue = typeof value !== 'object' ? values[index] : value;
    const key = this.getKey(selectedValue, index);

    return (
      <RadioButtonGroup
        valueSelected={ key }
        name={ name }
        onChange={ this.onChange }
      >
        { this.renderContent() }
      </RadioButtonGroup>
    );
  }

  renderContent () {
    const { values } = this.props;

    return values.map((value, index) => {
      const label = typeof value === 'string' ? value : value.label || '';
      const description = (typeof value !== 'string' && value.description) || null;
      const key = this.getKey(value, index);

      return (
        <RadioButton
          className={ styles.spaced }
          key={ index }

          value={ key }
          label={ (
            <div className={ styles.typeContainer }>
              <span>{ label }</span>
              {
                description
                ? (
                  <span className={ styles.desc }>{ description }</span>
                )
                : null
              }
            </div>
          ) }
        />
      );
    });
  }

  getKey (value, index) {
    if (typeof value !== 'string') {
      return typeof value.key === 'undefined' ? index : value.key;
    }

    return index;
  }

  onChange = (event, index) => {
    const { onChange, values } = this.props;

    const value = values[index] || values.find((v) => v.key === index);
    onChange(value, index);
  }
}