// @flow strict

import * as React from 'react';

import {TEXT_COLORS} from '../../types/typography';
import {classify} from '../../utils/classify';
import type {IconType} from '../Icon';
import {ClickableIcon, Icon} from '../Icon';
import {Link} from '../Link';
import {SubTitleExtraSmall} from '../Text';
import {Truncate} from '../Truncate';

import css from './InContextAlert.module.css';


export const ALERT_SEMANTIC = Object.freeze({
  neutral: 'neutral',
  success: 'success',
  information: 'information',
  warning: 'warning',
  danger: 'danger',
});

type ClassNames = $ReadOnly<{
  wrapper?: string,
  alertText?: string,
  actionContainer?: string,
}>;
export type AlertSemanticType = $Values<typeof ALERT_SEMANTIC>;

type InContextAlertBaseProps = {
  classNames?: ClassNames,
  ...
    | {
        dismissable: true,
        onCloseClick?: ?(SyntheticEvent<HTMLElement>) => mixed,
        selfDismiss?: boolean,
      }
    | {dismissable?: false},
  children?: string,
  actionText?: string,
  onAction?: ?(SyntheticEvent<HTMLElement>) => mixed,
};

export type InContextAlertProps = {
  ...InContextAlertBaseProps,
  semantic?: AlertSemanticType,
  leftIconName?: string,
  leftIconType?: IconType,
};

const AlertIcon = ({
  semantic,
  leftIconName,
  leftIconType,
}: {
  semantic: AlertSemanticType,
  leftIconName: string,
  leftIconType?: IconType,
}) => {
  switch (semantic) {
  case ALERT_SEMANTIC.neutral:
    return (
      <Icon
        color={TEXT_COLORS.neutral}
        name={leftIconName ? leftIconName : 'face-smile'}
        size="small"
        type={leftIconType}
      />
    );
  case ALERT_SEMANTIC.success:
    return (
      <Icon
        name={leftIconName ? leftIconName : 'circle-check'}
        size="small"
        color={TEXT_COLORS.success}
        type={leftIconType}
      />
    );

  case ALERT_SEMANTIC.information:
    return (
      <Icon
        name={leftIconName ? leftIconName : 'circle-info'}
        size="small"
        color={TEXT_COLORS.information}
        type={leftIconType}
      />
    );

  case ALERT_SEMANTIC.warning:
    return (
      <Icon
        name={leftIconName ? leftIconName : 'circle-exclamation'}
        size="small"
        color={TEXT_COLORS.warning}
        type={leftIconType}
      />
    );

  case ALERT_SEMANTIC.danger:
    return (
      <Icon
        name={leftIconName ? leftIconName : 'shield-exclamation'}
        size="small"
        color={TEXT_COLORS.danger}
        type={leftIconType}
      />
    );

  default:
    return (
      <Icon
        color={TEXT_COLORS.neutral}
        name={leftIconName ? leftIconName : 'face-smile'}
        size="small"
        type={leftIconType}
      />
    );
  }
};

export const InContextAlert: React$AbstractComponent<
  InContextAlertProps,
  HTMLDivElement,
> = React.forwardRef<InContextAlertProps, HTMLDivElement>(
  (props: InContextAlertProps, ref): React.Node => {
    const {
      classNames,
      semantic = ALERT_SEMANTIC.neutral,
      dismissable,
      children,
      selfDismiss = false,
      leftIconName = '',
      onCloseClick,
      actionText = '',
      onAction,
      leftIconType,
    } = props;
    const [dismissed, setDismissed] = React.useState(false);
    const closeClickHandler = (e) => {
      onCloseClick && onCloseClick(e);
      selfDismiss && setDismissed(true);
    };

    return (
      <>
        {!dismissed && (
          <div
            className={classify(
              css.alertContainer,
              {
                [css.neutral]: semantic === ALERT_SEMANTIC.neutral,
                [css.success]: semantic === ALERT_SEMANTIC.success,
                [css.information]: semantic === ALERT_SEMANTIC.information,
                [css.warning]: semantic === ALERT_SEMANTIC.warning,
                [css.danger]: semantic === ALERT_SEMANTIC.danger,
              },
              classNames?.wrapper,
            )}
            ref={ref}
          >
            <AlertIcon
              semantic={semantic}
              leftIconName={leftIconName}
              leftIconType={leftIconType}
            />
            {React.Children.count(children) > 0 && (
              <SubTitleExtraSmall className={classify(classNames?.alertText)}>
                <Truncate line={2}>{children}</Truncate>
              </SubTitleExtraSmall>
            )}
            {!!(actionText || dismissable) && (
              <div
                className={classify(
                  css.actionContainer,
                  classNames?.actionContainer,
                )}
              >
                {!!actionText && (
                  <Link onClick={onAction} color="primary">
                    {actionText}
                  </Link>
                )}
                {!!dismissable && (
                  <ClickableIcon
                    color={TEXT_COLORS.primary}
                    name="close"
                    size="small"
                    type="regular"
                    onClick={closeClickHandler}
                    className={css.closeIcon}
                  />
                )}
              </div>
            )}
          </div>
        )}
      </>
    );
  },
);