/**
 * 消息/沟通数据 hook：聚合会话、通知、面试、匹配结果
 */
import {
  fetchConversations,
  fetchInterviews,
  fetchMatchResult,
  fetchNotifications,
  fetchPendingOfferCount,
} from '../api';
import { useAsyncData } from './useAsyncData';

/** 聚合拉取消息中心全部数据（模块级函数，引用稳定，避免 useAsyncData 反复触发） */
async function fetchMessageData() {
  const [conversations, notifications, interviews, matchResult, pendingOfferCount] =
    await Promise.all([
      fetchConversations(),
      fetchNotifications(),
      fetchInterviews(),
      fetchMatchResult(),
      fetchPendingOfferCount(),
    ]);
  return { conversations, notifications, interviews, matchResult, pendingOfferCount };
}

export function useMessageData() {
  const { data, loading, error, refresh } = useAsyncData(fetchMessageData);

  const conversations = data?.conversations ?? [];
  const notifications = data?.notifications ?? [];
  const interviews = data?.interviews ?? [];
  const matchResult = data?.matchResult ?? null;
  /** 待处理 Offer 数：为 0 时聊天页不渲染横幅，不再显示写死的「2 个」 */
  const pendingOfferCount = data?.pendingOfferCount ?? 0;
  // 空状态：加载完成且无错误、但三类列表均为空
  const isEmpty =
    !loading &&
    !error &&
    conversations.length === 0 &&
    notifications.length === 0 &&
    interviews.length === 0;

  return {
    conversations,
    notifications,
    interviews,
    matchResult,
    pendingOfferCount,
    loading,
    error,
    refresh,
    isEmpty,
  };
}