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// @flow
import * as React from 'react';
import { Text, Component } from 'reactxp';
import { Button } from './Button';
import styles from './AppButtonStyles';
import blurStyles from './BlurAppButtonStyles';

export class Label extends Text {}

class BaseButton extends Component {
  props: {
    children?: React.Node,
    disabled: boolean,
  };

  state = { hovered: false };

  textStyle = () => (this.state.hovered ? styles.white80 : styles.white);
  iconStyle = () => (this.state.hovered ? styles.white80 : styles.white);
  backgroundStyle = () => (this.state.hovered ? styles.white80 : styles.white);

  onHoverStart = () => (!this.props.disabled ? this.setState({ hovered: true }) : null);
  onHoverEnd = () => (!this.props.disabled ? this.setState({ hovered: false }) : null);
  render() {
    const { children, ...otherProps } = this.props;
    return (
      <Button
        style={[styles.common, this.backgroundStyle()]}
        onHoverStart={this.onHoverStart}
        onHoverEnd={this.onHoverEnd}
        {...otherProps}>
        {React.Children.map(children, (node) => {
          if (React.isValidElement(node)) {
            let updatedProps = {};

            if (node.type.name === 'Label') {
              updatedProps = { style: [styles.label, this.textStyle()] };
            }

            if (node.type.name === 'Img') {
              updatedProps = { tintColor: 'currentColor', style: [styles.icon, this.iconStyle()] };
            }

            return React.cloneElement(node, updatedProps);
          } else {
            return <Label style={[styles.label, this.textStyle()]}>{children}</Label>;
          }
        })}
      </Button>
    );
  }
}

export class RedButton extends BaseButton {
  backgroundStyle = () => (this.state.hovered ? styles.redHover : styles.red);
}

export class GreenButton extends BaseButton {
  backgroundStyle = () => (this.state.hovered ? styles.greenHover : styles.green);
}

export class BlueButton extends BaseButton {
  backgroundStyle = () => (this.state.hovered ? styles.blueHover : styles.blue);
}

export class TransparentButton extends BaseButton {
  backgroundStyle = () =>
    this.state.hovered ? blurStyles.transparentHover : blurStyles.transparent;
}

export class RedTransparentButton extends BaseButton {
  backgroundStyle = () =>
    this.state.hovered ? blurStyles.redTransparentHover : blurStyles.redTransparent;
}