import { Modal, message } from 'antd';
import { getAccessToken } from '@/access';
import { getAppUserInfo } from '@/services/jobportal/user';

/** 人社门户登录页 */
export const PORTAL_LOGIN_URL = 'http://218.31.252.15:9081/hrss-web-vue/login';

/** /api/getInfo 缓存结构（不含 msg、code） */
export interface GetInfoCache {
  permissions?: string[];
  roles?: string[];
  user?: Record<string, unknown>;
}

const GET_INFO_CACHE_KEY = 'getInfoCache';
const DEFAULT_AVATAR =
  'https://gw.alipayobjects.com/zos/rmsportal/BiazfanxmamNRoxxVxka.png';

let appUserInfoPromise: Promise<number | null> | null = null;

/** 读取 /api/getInfo 完整缓存 */
export function getGetInfoCache(): GetInfoCache | null {
  try {
    const cached = localStorage.getItem(GET_INFO_CACHE_KEY);
    if (cached) {
      return JSON.parse(cached) as GetInfoCache;
    }
  } catch {
    // ignore
  }
  return null;
}

/** 将 /api/getInfo 返回体（除 msg、code）写入 localStorage */
export function saveGetInfoCache(response: Record<string, unknown>): void {
  try {
    const { msg: _msg, code: _code, ...rest } = response;
    const user = rest.user
      ? { ...(rest.user as Record<string, unknown>) }
      : undefined;

    if (user && (user.avatar === '' || user.avatar == null)) {
      user.avatar = DEFAULT_AVATAR;
    }

    const payload: GetInfoCache = {
      permissions: (rest.permissions as string[]) ?? [],
      roles: (rest.roles as string[]) ?? [],
      user,
    };

    localStorage.setItem(GET_INFO_CACHE_KEY, JSON.stringify(payload));

    if (user) {
      const raw = user.appUserId ?? user.userId;
      if (raw != null && raw !== '') {
        const n = Number(raw);
        if (!Number.isNaN(n) && n > 0) {
          localStorage.setItem('appUserId', String(n));
        }
      }
    }
  } catch (error) {
    console.error('保存 getInfo 缓存失败:', error);
  }
}

/** 清除 getInfo 缓存 */
export function clearGetInfoCache(): void {
  localStorage.removeItem(GET_INFO_CACHE_KEY);
}

/** 从本地缓存读取求职者 userId（同步） */
export const getJobPortalUserId = (): number | null => {
  try {
    const cached = localStorage.getItem('userInfo');
    if (cached) {
      const userInfo = JSON.parse(cached);
      const raw = userInfo?.userId ?? userInfo?.id;
      if (raw != null && raw !== '') {
        const n = Number(raw);
        if (!Number.isNaN(n) && n > 0) return n;
      }
    }
  } catch {
    // ignore
  }

  const getInfo = getGetInfoCache();
  const sessionUser = getInfo?.user;
  if (sessionUser) {
    const raw = sessionUser.appUserId ?? sessionUser.userId;
    if (raw != null && raw !== '') {
      const n = Number(raw);
      if (!Number.isNaN(n) && n > 0) return n;
    }
  }

  try {
    const appUserId = localStorage.getItem('appUserId');
    if (appUserId) {
      const n = Number(appUserId);
      if (!Number.isNaN(n) && n > 0) return n;
    }
  } catch {
    // ignore
  }
  return null;
};

export const isJobPortalLoggedIn = (): boolean => {
  if (getAccessToken()) {
    return true;
  }
  return !!getJobPortalUserId();
};

/**
 * 已登录但本地无 userId 时，拉取 appUser 信息并写入 userInfo
 */
export const ensureJobPortalUserId = async (): Promise<number | null> => {
  const cached = getJobPortalUserId();
  if (cached) return cached;

  if (!getAccessToken()) {
    return null;
  }

  if (!appUserInfoPromise) {
    appUserInfoPromise = (async () => {
      try {
        const response = await getAppUserInfo();
        if (response?.code === 200 && response?.data) {
          localStorage.setItem('userInfo', JSON.stringify(response.data));
          const raw = response.data.userId ?? (response.data as { id?: number }).id;
          if (raw != null && raw !== '') {
            const n = Number(raw);
            if (!Number.isNaN(n) && n > 0) {
              localStorage.setItem('appUserId', String(n));
              return n;
            }
          }
        }
      } catch (error) {
        console.error('获取求职者用户信息失败:', error);
      }
      return null;
    })().finally(() => {
      appUserInfoPromise = null;
    });
  }

  return appUserInfoPromise;
};

/** 门户进入后预拉求职者信息，避免有 token 无 userId */
export const prefetchJobPortalUserInfo = (): void => {
  if (getAccessToken() && !getJobPortalUserId()) {
    void ensureJobPortalUserId();
  }
};

/** 未登录时弹窗提示并跳转登录页，已登录返回 true */
export const ensureJobPortalLogin = (actionHint = '该操作'): boolean => {
  if (isJobPortalLoggedIn()) {
    return true;
  }
  Modal.confirm({
    title: '请先登录',
    content: `登录后才可${actionHint}，是否前往登录？`,
    okText: '去登录',
    cancelText: '取消',
    onOk: () => {
      window.location.href = PORTAL_LOGIN_URL;
    },
  });
  return false;
};

/** 收藏/申请等需要 userId 的操作：先校验登录，再确保 userId 可用 */
export const requireJobPortalUserId = async (actionHint: string): Promise<number | null> => {
  if (!ensureJobPortalLogin(actionHint)) {
    return null;
  }
  const userId = await ensureJobPortalUserId();
  if (!userId) {
    message.warning('无法获取用户信息，请稍后重试');
    return null;
  }
  return userId;
};