Function Chat

packages/app/src/pages/Chat/Chat.tsx:64–161

()

})();

export default function Chat() {
    const isLogin = useIsLogin();
    const self = useSelfId();
    const { focus } = useStore();
    const linkman = useFocusLinkman();
    const $messageList = useRef<ScrollView>();

    async function fetchGroupOnlineMembers() {
        let onlineMembers: Group['members'] = [];
        if (isLogin) {
            onlineMembers = await getGroupOnlineMembers(focus);
        } else {
            onlineMembers = await getDefaultGroupOnlineMembers();
        }
        if (onlineMembers) {
            action.updateGroupProperty(focus, 'members', onlineMembers);
        }
    }
    async function fetchUserOnlineStatus() {
        const isOnline = await getUserOnlineStatus(focus.replace(self, ''));
        action.updateFriendProperty(focus, 'isOnline', isOnline);
    }
    useEffect(() => {
        if (!linkman || !isLogin) {
            return;
        }
        const request =
            linkman.type === 'group'
                ? fetchGroupOnlineMembers
                : fetchUserOnlineStatus;
        request();
        const timer = setInterval(() => request(), 1000 * 60);
        return () => clearInterval(timer);
    }, [focus, isLogin]);

    useEffect(() => {
        if (Actions.currentScene !== 'chat') {
            return;
        }
        Actions.refresh({
            title: formatLinkmanName(linkman as Linkman),
        });
    }, [(linkman as Group).members, (linkman as Friend).isOnline]);

    async function intervalUpdateHistory() {
        if (isLogin && linkman) {
            if (linkman.messages.length > 0) {
                const lastMessageId =
                    linkman.messages[linkman.messages.length - 1]._id;
                if (lastMessageId !== lastMessageIdCache) {
                    lastMessageIdCache = lastMessageId;
                    await fetch('updateHistory', {
                        linkmanId: focus,
                        messageId: lastMessageId,
                    });
                }
            }
        }