RocketChat/Rocket.Chat

import type { IRoom } from '@rocket.chat/core-typings';
import { isDirectMessageRoom, isVoipRoom } from '@rocket.chat/core-typings';
import { useLayout, useSetting } from '@rocket.chat/ui-contexts';
import type { ReactElement } from 'react';
import React, { lazy, memo, useMemo } from 'react';

import { HeaderToolbar } from '../../../components/Header';
import SidebarToggler from '../../../components/SidebarToggler';

const OmnichannelRoomHeader = lazy(() => import('./Omnichannel/OmnichannelRoomHeader'));
const VoipRoomHeader = lazy(() => import('./Omnichannel/VoipRoomHeader'));
const RoomHeaderE2EESetup = lazy(() => import('./RoomHeaderE2EESetup'));
const DirectRoomHeader = lazy(() => import('./DirectRoomHeader'));
const RoomHeader = lazy(() => import('./RoomHeader'));

type HeaderProps<T> = {
    room: T;
};

const Header = ({ room }: HeaderProps<IRoom>): ReactElement | null => {
    const { isMobile, isEmbedded, showTopNavbarEmbeddedLayout } = useLayout();
    const encrypted = Boolean(room.encrypted);
    const unencryptedMessagesAllowed = useSetting<boolean>('E2E_Allow_Unencrypted_Messages');
    const shouldDisplayE2EESetup = encrypted && !unencryptedMessagesAllowed;

    const slots = useMemo(
        () => ({
            start: isMobile && (
                <HeaderToolbar>
                    <SidebarToggler />
                </HeaderToolbar>
            ),
        }),
        [isMobile],
    );

    if (isEmbedded && !showTopNavbarEmbeddedLayout) {
        return null;
    }

    if (room.t === 'l') {
        return <OmnichannelRoomHeader slots={slots} />;
    }

    if (isVoipRoom(room)) {
        return <VoipRoomHeader slots={slots} room={room} />;
    }

    if (shouldDisplayE2EESetup) {
        return <RoomHeaderE2EESetup room={room} topic={room.topic} slots={slots} />;
    }

    if (isDirectMessageRoom(room) && (room.uids?.length ?? 0) < 3) {
        return <DirectRoomHeader slots={slots} room={room} />;
    }

    return <RoomHeader room={room} topic={room.topic} slots={slots} />;
};

export default memo(Header);