import React, { Component, PropTypes } from 'react';
import classnames from 'classnames';
import Icon from '../Icon';

class Button extends Component {

  render() {
    const props = this.props;
    const { theme, size, isBlock, isRadius, isRound, isCircle, isActive, isFocus, isBordered, isDisabled, isLoading, className, onClick, children, ...others } = this.props;
    const disabled = ('disabled' in props || isDisabled);
    const loading = ('loading' in props || isLoading);

    const classes = classnames({
      'ui-button': true,
      block: ('block' in props || isBlock),
      radius: ('radius' in props || isRadius),
      round: ('round' in props || isRound),
      circle: ('circle' in props || isCircle),
      bordered: ('bordered' in props || isBordered),
      active: ('active' in props || isActive),
      focus: ('focus' in props || isFocus),
      disabled,
      [`theme-${theme}`]: !!theme,
      [`size-${size}`]: !!size,
      [className]: !!className,
    });

    const textContent = loading
                      ? <span><Icon type="loading" className="rotate360" /> {children}</span>
                      : children;
    return (
      <button {...others} className={classes} disabled={disabled} onClick={e => !disabled && onClick(e)}>{textContent}</button>
    );
  }
}

Button.propTypes = {
  type: PropTypes.string,
  theme: PropTypes.oneOf(['default', 'info', 'success', 'warning', 'error']),
  size: PropTypes.oneOf(['xl', 'lg', 'sm', 'xs']),
  isBlock: PropTypes.bool,
  isRadius: PropTypes.bool,
  isRound: PropTypes.bool,
  isCircle: PropTypes.bool,
  isBordered: PropTypes.bool,
  isActive: PropTypes.bool,
  isFocus: PropTypes.bool,
  isDisabled: PropTypes.bool,
  isLoading: PropTypes.bool,
  className: PropTypes.string,
  onClick: PropTypes.func,
};

Button.defaultProps = {
  type: 'button',
  theme: 'default',
  size: null,
  isBlock: false,
  isRadius: false,
  isRound: false,
  isCircle: false,
  isBordered: false,
  isActive: false,
  isFocus: false,
  isDisabled: false,
  isLoading: false,
  className: null,
  onClick: () => {},
};

export default Button;