/*
 * This file is part of the kernelstudio package.
 *
 * (c) 2014-2025 zlin <admin@kernelstudio.com>
 *
 * For the full copyright and license information, please view the LICENSE file
 * that was distributed with this source code.
 */

import { computed, type ComputedRef, ref, type Ref } from 'vue';
import { getToken, removeToken, setToken } from '../utils/token';
import type { UserLoginForm, UserSessionResult } from '@/types';
import { fetchUserSession, signinByForm } from '@/api/user';

const userDetails = ref<UserSessionResult | null>(null);
const token = ref<string>(getToken() || '');

export interface UseUserSession {
  token: Ref<String>;
  details: ComputedRef<UserSessionResult | null>;
  load: () => Promise<UserSessionResult>;
  signin: (form: UserLoginForm) => Promise<UserSessionResult>;
  logout: () => Promise<boolean>;
}

export const useUserSession = (): UseUserSession => {

  const load = (): Promise<UserSessionResult> => {
    return new Promise((resolve, reject) => {
      if (userDetails.value) {
        resolve(userDetails.value);
      } else {
        fetchUserSession().then(r => {
          if (r.user) {
            userDetails.value = r;
            resolve(r);
          } else {
            reject(new Error(r.msg ?? '获取用户信息失败.'));
          }
        }).catch((e: any)=> {
          reject(e);
        });
      }
    });
  };

  const logout = (): Promise<boolean> => {
    return new Promise((resolve) => {
      removeToken();
      resolve(true);
      // logoutSession().then(r => resolve(r.code === 200));
    });
  };

  const signin = (form: UserLoginForm): Promise<UserSessionResult> => {
    return new Promise((resolve, reject) => {
      signinByForm(form).then(r => {
        if (r.token) {
          setToken(r.token);
          load().then(r => resolve(r));
        } else {
          reject(new Error(r.msg ?? '登录失败'));
        }
      });
    });
  };

  return {
    token,
    details: computed(() => userDetails.value),
    load,
    signin,
    logout,
  } as UseUserSession;
};