import React from 'react';
import PropTypes from 'prop-types';
import styled from 'styled-components';
import remcalc from 'remcalc';
import { borderRadius } from '../boxes';
import Baseline from '../baseline';

const StyledIconButton = styled.button`
  border-radius: ${borderRadius};
  border: solid ${remcalc(1)} ${props => props.theme.grey};
  background-color: ${props => props.theme.white};
  box-sizing: border-box;
  display: inline-block;
  justify-content: center;
  align-items: center;
  margin-left: ${remcalc(6)};
  padding: ${remcalc(15)} ${remcalc(18)};
  position: relative;
  text-align: center;
  line-height: normal;
  vertical-align: middle;
  touch-action: manipulation;
  cursor: pointer;

  &:focus {
    outline: 0;
    background-color: ${props => props.theme.white};
    border-color: ${props => props.theme.grey};
  }

  &:hover {
    background-color: ${props => props.theme.whiteHover};
    border-color: ${props => props.theme.grey};
  }

  &:active,
  &:active:hover,
  &:active:focus {
    outline: 0;
    background-color: ${props => props.theme.whiteActive};
    border-color: ${props => props.theme.grey};
  }

  &[disabled] {
    cursor: not-allowed;
    pointer-events: none;
    color: ${props => props.theme.grey};
    background-color: ${props => props.theme.disabled};
    border-color: ${props => props.theme.grey};

    &:focus {
      background-color: ${props => props.theme.disabled};
      border-color: ${props => props.theme.grey};
    }

    &:hover {
      background-color: ${props => props.theme.disabled};
      border-color: ${props => props.theme.disabled};
    }

    &:active,
    &:active:hover,
    &:active:focus {
      background-color: ${props => props.theme.disabled};
      border-color: ${props => props.theme.disabled};
    }
  }
`;

const StyledDiv = styled.div`
  height: ${remcalc(16)};
`;

/**
 * @example ./usage.md
 */
const IconButton = ({ children, onClick }) =>
  <StyledIconButton onClick={onClick}>
    <StyledDiv>
      {children}
    </StyledDiv>
  </StyledIconButton>;

IconButton.propTypes = {
  children: PropTypes.node,
  onClick: PropTypes.func
};

export default Baseline(IconButton);