// Copyright 2021 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only

import type { ReactChild, ReactNode } from 'react';
import React from 'react';
import classNames from 'classnames';
import { Tooltip, TooltipPlacement } from './Tooltip';
import { WidthBreakpoint } from './_util';

const BASE_CLASS_NAME = 'LeftPaneDialog';
const TOOLTIP_CLASS_NAME = `${BASE_CLASS_NAME}__tooltip`;

export type PropsType = {
  type?: 'warning' | 'error';
  icon?: 'update' | 'relink' | 'network' | 'warning' | ReactChild;
  title?: string;
  subtitle?: string;
  children?: ReactNode;
  hoverText?: string;
  containerWidthBreakpoint: WidthBreakpoint;
} & (
  | {
      onClick?: undefined;
      clickLabel?: undefined;
      hasAction?: false;
    }
  | {
      onClick: () => void;
      clickLabel: string;
      hasAction: true;
    }
) &
  (
    | {
        onClose?: undefined;
        closeLabel?: undefined;
        hasXButton?: false;
      }
    | {
        onClose: () => void;
        closeLabel: string;
        hasXButton: true;
      }
  );

export function LeftPaneDialog({
  icon = 'warning',
  type,
  onClick,
  clickLabel,
  title,
  subtitle,
  children,
  hoverText,
  hasAction,

  containerWidthBreakpoint,
  hasXButton,
  onClose,
  closeLabel,
}: PropsType): JSX.Element {
  const onClickWrap = (e: React.MouseEvent) => {
    e.preventDefault();
    e.stopPropagation();

    onClick?.();
  };

  const onKeyDownWrap = (e: React.KeyboardEvent) => {
    if (e.key !== 'Enter' && e.key !== ' ') {
      return;
    }

    e.preventDefault();
    e.stopPropagation();

    onClick?.();
  };

  const onCloseWrap = (e: React.MouseEvent) => {
    e.preventDefault();
    e.stopPropagation();

    onClose?.();
  };

  const iconClassName =
    typeof icon === 'string'
      ? classNames([
          `${BASE_CLASS_NAME}__icon`,
          `${BASE_CLASS_NAME}__icon--${icon}`,
        ])
      : undefined;

  let action: ReactNode;
  if (hasAction) {
    action = (
      <button
        title={clickLabel}
        aria-label={clickLabel}
        className={`${BASE_CLASS_NAME}__action-text`}
        onClick={onClickWrap}
        tabIndex={0}
        type="button"
      >
        {clickLabel}
      </button>
    );
  }

  let xButton: ReactNode;
  if (hasXButton) {
    xButton = (
      <div className={`${BASE_CLASS_NAME}__container-close`}>
        <button
          title={closeLabel}
          aria-label={closeLabel}
          className={`${BASE_CLASS_NAME}__close-button`}
          onClick={onCloseWrap}
          tabIndex={0}
          type="button"
        />
      </div>
    );
  }

  const className = classNames([
    BASE_CLASS_NAME,
    type === undefined ? undefined : `${BASE_CLASS_NAME}--${type}`,
    onClick === undefined ? undefined : `${BASE_CLASS_NAME}--clickable`,
  ]);

  const message = (
    <>
      {title === undefined ? undefined : <h3>{title}</h3>}
      {subtitle === undefined ? undefined : <div>{subtitle}</div>}
      {children}
      {action}
    </>
  );

  const content = (
    <>
      <div className={`${BASE_CLASS_NAME}__container`}>
        {typeof icon === 'string' ? <div className={iconClassName} /> : icon}
        <div className={`${BASE_CLASS_NAME}__message`}>{message}</div>
      </div>
      {xButton}
    </>
  );

  let dialogNode: ReactChild;
  if (onClick) {
    dialogNode = (
      <div
        className={className}
        role="button"
        onClick={onClickWrap}
        onKeyDown={onKeyDownWrap}
        aria-label={clickLabel}
        title={hoverText}
        tabIndex={0}
      >
        {content}
      </div>
    );
  } else {
    dialogNode = (
      <div className={className} title={hoverText}>
        {content}
      </div>
    );
  }

  if (containerWidthBreakpoint === WidthBreakpoint.Narrow) {
    return (
      <Tooltip
        content={message}
        direction={TooltipPlacement.Right}
        className={classNames(
          TOOLTIP_CLASS_NAME,
          type && `${TOOLTIP_CLASS_NAME}--${type}`
        )}
      >
        {dialogNode}
      </Tooltip>
    );
  }

  return dialogNode;
}