// @flow

import * as NOTIFICATIONS from 'constants/notifications';
import * as PAGES from 'constants/pages';
import * as ICONS from 'constants/icons';
import React from 'react';
import classnames from 'classnames';
import Icon from 'component/common/icon';
import DateTime from 'component/dateTime';
import Button from 'component/button';
import ChannelThumbnail from 'component/channelThumbnail';
import { formatLbryUrlForWeb } from 'util/url';
import { useHistory } from 'react-router';
import { parseURI } from 'lbry-redux';
import { PAGE_VIEW_QUERY, DISCUSSION_PAGE } from 'page/channel/view';
import FileThumbnail from 'component/fileThumbnail';
import { Menu, MenuList, MenuButton, MenuItem } from '@reach/menu-button';
import NotificationContentChannelMenu from 'component/notificationContentChannelMenu';

type Props = {
  notification: WebNotification,
  menuButton: boolean,
  children: any,
  doReadNotifications: ([number]) => void,
  doDeleteNotification: (number) => void,
};

export default function Notification(props: Props) {
  const { notification, menuButton = false, doReadNotifications, doDeleteNotification } = props;
  const { push } = useHistory();
  const { notification_rule, notification_parameters, is_read, id } = notification;
  const isCommentNotification =
    notification_rule === NOTIFICATIONS.NOTIFICATION_COMMENT || notification_rule === NOTIFICATIONS.NOTIFICATION_REPLY;
  const commentText = isCommentNotification && notification_parameters.dynamic.comment;
  const channelUrl =
    (notification_rule === NOTIFICATIONS.NEW_CONTENT && notification.notification_parameters.dynamic.channel_url) || '';

  let notificationTarget;
  switch (notification_rule) {
    case NOTIFICATIONS.DAILY_WATCH_AVAILABLE:
    case NOTIFICATIONS.DAILY_WATCH_REMIND:
      notificationTarget = `/$/${PAGES.CHANNELS_FOLLOWING}`;
      break;
    default:
      notificationTarget = notification_parameters.device.target;
  }

  let notificationLink = formatLbryUrlForWeb(notificationTarget);
  let urlParams = new URLSearchParams();
  if (isCommentNotification && notification_parameters.dynamic.hash) {
    urlParams.append('lc', notification_parameters.dynamic.hash);
  }

  try {
    const { isChannel } = parseURI(notificationTarget);
    if (isChannel) {
      urlParams.append(PAGE_VIEW_QUERY, DISCUSSION_PAGE);
    }
  } catch (e) {}

  notificationLink += `?${urlParams.toString()}`;

  let icon;
  switch (notification_rule) {
    case NOTIFICATIONS.NOTIFICATION_CREATOR_SUBSCRIBER:
      icon = <Icon icon={ICONS.SUBSCRIBE} sectionIcon />;
      break;
    case NOTIFICATIONS.NOTIFICATION_COMMENT:
      icon = <ChannelThumbnail small uri={notification_parameters.dynamic.comment_author} />;
      break;
    case NOTIFICATIONS.NOTIFICATION_REPLY:
      icon = <ChannelThumbnail small uri={notification_parameters.dynamic.reply_author} />;
      break;
    case NOTIFICATIONS.NEW_CONTENT:
      icon = <ChannelThumbnail small uri={notification_parameters.dynamic.channel_url} />;
      break;
    case NOTIFICATIONS.DAILY_WATCH_AVAILABLE:
    case NOTIFICATIONS.DAILY_WATCH_REMIND:
      icon = <Icon icon={ICONS.LBC} sectionIcon />;
      break;
    default:
      icon = <Icon icon={ICONS.NOTIFICATION} sectionIcon />;
  }

  function handleNotificationClick() {
    if (!is_read) {
      doReadNotifications([id]);
    }

    if (notificationLink) {
      push(notificationLink);
    }
  }

  function handleReadNotification(e) {
    e.stopPropagation();
    doReadNotifications([id]);
  }

  const Wrapper = menuButton
    ? (props: { children: any }) => (
        <MenuItem className="menu__link--notification" onSelect={handleNotificationClick}>
          {props.children}
        </MenuItem>
      )
    : notificationLink
    ? (props: { children: any }) => (
        <a className="menu__link--notification" onClick={handleNotificationClick}>
          {props.children}
        </a>
      )
    : (props: { children: any }) => (
        <span
          className={is_read ? 'menu__link--notification-nolink' : 'menu__link--notification'}
          onClick={handleNotificationClick}
        >
          {props.children}
        </span>
      );

  return (
    <Wrapper>
      <div
        className={classnames('notification__wrapper', {
          'notification__wrapper--unread': !is_read,
        })}
      >
        <div className="notification__icon">{icon}</div>

        <div className="notification__content-wrapper">
          <div className="notification__content">
            <div className="notification__text-wrapper">
              {!isCommentNotification && (
                <div className="notification__title">{notification_parameters.device.title}</div>
              )}

              {isCommentNotification && commentText ? (
                <>
                  <div className="notification__title">{notification_parameters.device.title}</div>
                  <div className="notification__text mobile-hidden">{commentText}</div>
                </>
              ) : (
                <>
                  <div className="notification__text">{notification_parameters.device.text}</div>
                </>
              )}
            </div>

            {notification_rule === NOTIFICATIONS.NEW_CONTENT && (
              <>
                <FileThumbnail
                  uri={notification_parameters.device.target}
                  className="notification__content-thumbnail"
                />
              </>
            )}
          </div>

          <div className="notification__extra">
            {!is_read && <Button className="notification__mark-seen" onClick={handleReadNotification} />}
            <div className="notification__time">
              <DateTime timeAgo date={notification.active_at} />
            </div>
          </div>
        </div>

        <div className="notification__menu">
          <Menu>
            <MenuButton onClick={(e) => e.stopPropagation()}>
              <Icon size={18} icon={ICONS.MORE_VERTICAL} />
            </MenuButton>
            <MenuList className="menu__list">
              <MenuItem className="menu__link" onSelect={() => doDeleteNotification(id)}>
                <Icon aria-hidden icon={ICONS.DELETE} />
                {__('Delete')}
              </MenuItem>
              {notification_rule === NOTIFICATIONS.NEW_CONTENT && channelUrl ? (
                <NotificationContentChannelMenu uri={channelUrl} />
              ) : null}
            </MenuList>
          </Menu>
        </div>
      </div>
    </Wrapper>
  );
}
