import { fetchUnreadCount } from "@/api/notification";

const MESSAGE_TAB_INDEX = 3;

function parseStoredUserInfo() {
  const raw = uni.getStorageSync("userInfo");
  if (!raw) return {};

  try {
    return typeof raw === "string" ? JSON.parse(raw) : raw;
  } catch (error) {
    return {};
  }
}

function hasLoginState() {
  const token = uni.getStorageSync("token");
  const userInfo = parseStoredUserInfo();
  return !!token || !!userInfo?.nickName;
}

export function syncMessageTabBarBadge(unreadCount = 0) {
  const count = Number(unreadCount) || 0;

  if (count > 0) {
    const text = count > 99 ? "99+" : String(count);
    uni.setTabBarBadge({
      index: MESSAGE_TAB_INDEX,
      text,
    });
    return;
  }

  uni.removeTabBarBadge({
    index: MESSAGE_TAB_INDEX,
  });
  uni.hideTabBarRedDot({
    index: MESSAGE_TAB_INDEX,
  });
}

export async function refreshMessageTabBarBadge() {
  if (!hasLoginState()) {
    syncMessageTabBarBadge(0);
    return 0;
  }

  try {
    const res = await fetchUnreadCount();
    const count =
      Number(
        res?.data?.count ??
        res?.data?.unreadCount ??
        res?.count ??
        res?.unreadCount ??
        res?.data ??
        0
      ) || 0;

    syncMessageTabBarBadge(count);
    return count;
  } catch (error) {
    return 0;
  }
}