import type { UserInfo } from '@vben/types';

import { ref } from 'vue';
import { useRouter } from 'vue-router';

import { LOGIN_PATH } from '@vben/constants';
import { preferences } from '@vben/preferences';
import { resetAllStores, useAccessStore, useUserStore } from '@vben/stores';

import { notification } from 'ant-design-vue';
import { defineStore } from 'pinia';

import { thAppLogin } from '#/api/th';
import { $t } from '#/locales';

import { useDictStore } from './dict';
import { useThTenantStore } from './th-tenant';

/** 泰额多租户登录入参（POST /api/app/th-app-auth/login） */
export interface ThAuthLoginParams {
  tenantId: string;
  email: string;
  password: string;
  uuid?: string;
  code?: string;
}

export const useAuthStore = defineStore('auth', () => {
  const accessStore = useAccessStore();
  const userStore = useUserStore();
  const thTenantStore = useThTenantStore();
  const router = useRouter();

  const loginLoading = ref(false);

  function buildUserInfoFromLogin(email: string, tenantName: string): UserInfo {
    const normalizedEmail = email.trim();
    return {
      avatar: '',
      email: normalizedEmail,
      permissions: [],
      realName: tenantName || normalizedEmail,
      roles: [],
      userId: normalizedEmail,
      username: normalizedEmail,
      homePath: preferences.app.defaultHomePath,
    };
  }

  /**
   * 泰额多租户登录
   */
  async function authLogin(
    params: ThAuthLoginParams,
    onSuccess?: () => Promise<void> | void,
  ) {
    let userInfo: null | UserInfo = null;
    try {
      loginLoading.value = true;

      const result = await thAppLogin({
        tenantId: params.tenantId,
        email: params.email,
        password: params.password,
        uuid: params.uuid,
        code: params.code,
      });

      if (!result.token?.trim()) {
        throw new Error('登录失败：未返回 token');
      }

      accessStore.setAccessToken(result.token);
      accessStore.setRefreshToken(result.refreshToken);
      accessStore.setAccessCodes([]);
      accessStore.setIsAccessChecked(false);

      thTenantStore.setTenantContext({
        tenantId: result.tenantId,
        tenantName: result.tenantName,
        locations: result.locations,
      });

      userInfo = buildUserInfoFromLogin(params.email, result.tenantName);
      userStore.setUserInfo(userInfo);

      if (accessStore.loginExpired) {
        accessStore.setLoginExpired(false);
      }

      loginLoading.value = false;

      if (onSuccess) {
        await onSuccess();
      } else {
        await router.push(preferences.app.defaultHomePath);
      }

      notification.success({
        description: `${$t('authentication.loginSuccessDesc')}:${userInfo.realName}`,
        duration: 3,
        message: $t('authentication.loginSuccess'),
      });
    } catch (error) {
      loginLoading.value = false;
      throw error;
    }

    return { userInfo };
  }

  async function logout(redirect: boolean = true) {
    try {
      const { doLogout, seeConnectionClose } = await import('#/api');
      await seeConnectionClose();
      await doLogout();
    } catch (error) {
      console.error(error);
    } finally {
      resetAllStores();
      thTenantStore.$reset();
      accessStore.setLoginExpired(false);

      await router.replace({
        path: LOGIN_PATH,
        query: redirect
          ? {
              redirect: encodeURIComponent(router.currentRoute.value.fullPath),
            }
          : {},
      });
    }
  }

  async function fetchUserInfo() {
    const cached = userStore.userInfo;
    if (cached?.username) {
      return cached;
    }

    // 泰额 SAAS：用户信息来自 th-app-auth/login，不走 Yi 框架 /account
    if (thTenantStore.tenantId && accessStore.accessToken) {
      const fallback = buildUserInfoFromLogin(
        cached?.email || cached?.username || 'user',
        thTenantStore.tenantName || '',
      );
      userStore.setUserInfo(fallback);
      return fallback;
    }

    try {
      const { getUserInfoApi } = await import('#/api');
      const backUserInfo = await getUserInfoApi();
      if (!backUserInfo) {
        throw new Error('获取用户信息失败.');
      }
      const { permissionCodes = [], roleCodes = [], user } = backUserInfo;
      const userInfo: UserInfo = {
        avatar: user.avatar ?? '',
        permissions: permissionCodes,
        realName: user.nick,
        roles: roleCodes,
        userId: user.userId,
        username: user.userName,
        email: user.email ?? '',
      };
      userStore.setUserInfo(userInfo);
      const dictStore = useDictStore();
      dictStore.resetCache();
      return userInfo;
    } catch (error) {
      if (cached) {
        return cached;
      }
      throw error;
    }
  }

  function $reset() {
    loginLoading.value = false;
  }

  return {
    $reset,
    authLogin,
    fetchUserInfo,
    loginLoading,
    logout,
  };
});