/**
 * SessionManager测试用例
 * 验证SessionManager的功能和安全性
 */

import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
import { DefaultSessionManager, createSessionManager } from '../../auth/session-manager';
import { MemoryStorageAdapter } from '../../auth/storage-adapter';
import type { User } from '@/types';
import type { ApiClient } from '@/api/types';

// 模拟ApiClient
const mockApiClient = {
  get: vi.fn(),
  post: vi.fn(),
  put: vi.fn(),
  delete: vi.fn(),
  patch: vi.fn(),
  request: vi.fn(),
  addRequestInterceptor: vi.fn(),
  addResponseInterceptor: vi.fn(),
  removeRequestInterceptor: vi.fn(),
  removeResponseInterceptor: vi.fn(),
  setDefaults: vi.fn(),
  setBaseURL: vi.fn(),
  createInstance: vi.fn()
} as unknown as ApiClient;

describe('SessionManager', () => {
  let sessionManager: DefaultSessionManager;
  let mockStorage: MemoryStorageAdapter;

  beforeEach(() => {
    vi.clearAllMocks();
    mockStorage = new MemoryStorageAdapter();
    sessionManager = new DefaultSessionManager(mockApiClient, mockStorage);
  });

  afterEach(() => {
    vi.restoreAllMocks();
  });

  describe('isAuthenticated', () => {
    it('当用户认证成功时返回true', async () => {
      // 模拟API返回用户信息
      const mockUser: User = {
        id: 'user-123',
        username: 'testuser',
      };
      
      mockApiClient.get.mockResolvedValue({ user: mockUser });
      
      // 验证认证状态
      const result = await sessionManager.isAuthenticated();
      expect(result).toBe(true);
      expect(mockApiClient.get).toHaveBeenCalledWith('/auth/me');
    });

    it('当用户认证失败时返回false', async () => {
      // 模拟API返回错误
      mockApiClient.get.mockRejectedValue(new Error('Unauthorized'));
      
      // 验证认证状态
      const result = await sessionManager.isAuthenticated();
      expect(result).toBe(false);
      expect(mockApiClient.get).toHaveBeenCalledWith('/auth/me');
    });
  });

  describe('getUserInfo', () => {
    it('当用户认证成功时返回用户信息', async () => {
      // 模拟API返回用户信息
      const mockUser: User = {
        id: 'user-123',
        username: 'testuser',
        email: 'test@example.com',
        avatar: '',
        createdAt: new Date().toISOString(),
        updatedAt: new Date().toISOString()
      };
      
      mockApiClient.get.mockResolvedValue({ user: mockUser });
      
      // 获取用户信息
      const user = await sessionManager.getUserInfo();
      expect(user).toEqual(mockUser);
      expect(mockApiClient.get).toHaveBeenCalledWith('/auth/me');
    });

    it('当用户认证失败时抛出错误', async () => {
      // 模拟API返回错误
      mockApiClient.get.mockRejectedValue(new Error('Unauthorized'));
      
      // 获取用户信息应该抛出错误
      await expect(sessionManager.getUserInfo()).rejects.toThrow('Unauthorized');
      expect(mockApiClient.get).toHaveBeenCalledWith('/auth/me');
    });

    it('每次调用都从服务器获取最新用户信息', async () => {
      // 模拟API返回用户信息
      const mockUser: User = {
        id: 'user-123',
        username: 'testuser',
        email: 'test@example.com',
        avatar: '',
        createdAt: new Date().toISOString(),
        updatedAt: new Date().toISOString()
      };
      
      mockApiClient.get.mockResolvedValue({ user: mockUser });
      
      // 第一次调用
      const user1 = await sessionManager.getUserInfo();
      expect(user1).toEqual(mockUser);
      expect(mockApiClient.get).toHaveBeenCalledTimes(1);
      
      // 第二次调用应该再次调用API，因为getUserInfo是幂等操作
      const user2 = await sessionManager.getUserInfo();
      expect(user2).toEqual(mockUser);
      expect(mockApiClient.get).toHaveBeenCalledTimes(2); // 有额外调用
    });
  });

  describe('clearCache', () => {
    it('应该清除缓存', () => {
      // 设置一些存储项
      mockStorage.setItem('user_preferences', '{"theme":"dark"}');
      mockStorage.setItem('ui_state', '{"sidebarOpen":true}');
      
      // 验证存储项存在
      expect(mockStorage.getItem('user_preferences')).toBe('{"theme":"dark"}');
      expect(mockStorage.getItem('ui_state')).toBe('{"sidebarOpen":true}');
      
      // 清除缓存
      sessionManager.clearCache();
      
      // 验证存储项已清除
      expect(mockStorage.getItem('user_preferences')).toBeNull();
      expect(mockStorage.getItem('ui_state')).toBeNull();
    });
  });

  describe('createSessionManager', () => {
    it('创建SessionManager实例', () => {
      const newSessionManager = createSessionManager(mockApiClient, mockStorage);
      expect(newSessionManager).toBeInstanceOf(DefaultSessionManager);
    });
  });
});