/**
 * 权限验证属性测试
 * 
 * Property 10: 权限验证严格性
 * Property 15: 并发请求限流
 * 
 * Validates: Requirements 5.1, 8.4
 * 
 * 测试目标：
 * - 验证权限验证机制的严格性和一致性
 * - 确保并发请求限流保护有效
 * - 验证权限边界和异常情况处理
 * 
 * 最近修改：
 * - 2026-01-08: 注释规范优化 - 修正@author字段，更新版本号和修改记录 (修改者: moyin)
 * - 2026-01-08: 功能新增 - 创建权限验证属性测试 (修改者: assistant)
 * 
 * @author moyin
 * @version 1.0.1
 * @since 2026-01-08
 * @lastModified 2026-01-08
 */

import { Test, TestingModule } from '@nestjs/testing';
import { INestApplication } from '@nestjs/common';
import { ConfigModule } from '@nestjs/config';
import { AdminDatabaseController } from './admin_database.controller';
import { DatabaseManagementService } from './database_management.service';
import { AdminOperationLogService } from './admin_operation_log.service';
import { AdminOperationLogInterceptor } from './admin_operation_log.interceptor';
import { AdminDatabaseExceptionFilter } from './admin_database_exception.filter';
import { AdminGuard } from './admin.guard';
import { UserStatus } from '../user_mgmt/user_status.enum';
import {
  PropertyTestRunner,
  PropertyTestGenerators,
  PropertyTestAssertions,
  DEFAULT_PROPERTY_CONFIG
} from './admin_property_test.base';

describe('Property Test: 权限验证功能', () => {
  let app: INestApplication;
  let module: TestingModule;
  let controller: AdminDatabaseController;
  let mockAdminGuard: any;
  let requestCount = 0;
  let concurrentRequests = new Set<string>();

  beforeAll(async () => {
    requestCount = 0;
    concurrentRequests.clear();
    
    mockAdminGuard = {
      canActivate: jest.fn().mockImplementation((context) => {
        const request = context.switchToHttp().getRequest();
        const requestId = request.headers['x-request-id'] || `req_${Date.now()}_${Math.random()}`;
        
        // 模拟权限验证逻辑
        const authHeader = request.headers.authorization;
        const adminRole = request.headers['x-admin-role'];
        const adminId = request.headers['x-admin-id'];
        
        // 并发请求跟踪
        if (concurrentRequests.has(requestId)) {
          return false; // 重复请求
        }
        concurrentRequests.add(requestId);
        
        // 模拟请求完成后清理
        setTimeout(() => {
          concurrentRequests.delete(requestId);
        }, 100);
        
        requestCount++;
        
        // 权限验证规则
        if (!authHeader || !authHeader.startsWith('Bearer ')) {
          return false;
        }
        
        if (!adminRole || !['super_admin', 'admin', 'moderator'].includes(adminRole)) {
          return false;
        }
        
        if (!adminId || adminId.length < 3) {
          return false;
        }
        
        // 模拟频率限制（每秒最多10个请求）
        const now = Date.now();
        const windowStart = Math.floor(now / 1000) * 1000;
        const recentRequests = Array.from(concurrentRequests).filter(id => 
          id.startsWith(`req_${windowStart}`)
        );
        
        if (recentRequests.length > 10) {
          return false; // 超过频率限制
        }
        
        return true;
      })
    };

    module = await Test.createTestingModule({
      imports: [
        ConfigModule.forRoot({
          isGlobal: true,
          envFilePath: ['.env.test', '.env']
        })
      ],
      controllers: [AdminDatabaseController],
      providers: [
        DatabaseManagementService,
        {
          provide: AdminOperationLogService,
          useValue: {
            createLog: jest.fn().mockResolvedValue({}),
            queryLogs: jest.fn().mockResolvedValue({ logs: [], total: 0 }),
            getLogById: jest.fn().mockResolvedValue(null),
            getStatistics: jest.fn().mockResolvedValue({}),
            cleanupExpiredLogs: jest.fn().mockResolvedValue(0),
            getAdminOperationHistory: jest.fn().mockResolvedValue([]),
            getSensitiveOperations: jest.fn().mockResolvedValue({ logs: [], total: 0 })
          }
        },
        {
          provide: AdminOperationLogInterceptor,
          useValue: {
            intercept: jest.fn().mockImplementation((context, next) => next.handle())
          }
        },
        {
          provide: 'UsersService',
          useValue: {
            findAll: jest.fn().mockResolvedValue([]),
            findOne: jest.fn().mockImplementation(() => {
              const user = PropertyTestGenerators.generateUser();
              return Promise.resolve({ ...user, id: BigInt(1) });
            }),
            create: jest.fn().mockImplementation((userData) => {
              return Promise.resolve({ ...userData, id: BigInt(1) });
            }),
            update: jest.fn().mockImplementation((id, updateData) => {
              const user = PropertyTestGenerators.generateUser();
              return Promise.resolve({ ...user, ...updateData, id });
            }),
            remove: jest.fn().mockResolvedValue(undefined),
            search: jest.fn().mockResolvedValue([]),
            count: jest.fn().mockResolvedValue(0)
          }
        },
        {
          provide: 'IUserProfilesService',
          useValue: {
            findAll: jest.fn().mockResolvedValue([]),
            findOne: jest.fn().mockResolvedValue({ id: BigInt(1) }),
            create: jest.fn().mockResolvedValue({ id: BigInt(1) }),
            update: jest.fn().mockResolvedValue({ id: BigInt(1) }),
            remove: jest.fn().mockResolvedValue(undefined),
            findByMap: jest.fn().mockResolvedValue([]),
            count: jest.fn().mockResolvedValue(0)
          }
        },
        {
          provide: 'ZulipAccountsService',
          useValue: {
            findMany: jest.fn().mockResolvedValue({ accounts: [] }),
            findById: jest.fn().mockResolvedValue({ id: '1' }),
            create: jest.fn().mockResolvedValue({ id: '1' }),
            update: jest.fn().mockResolvedValue({ id: '1' }),
            delete: jest.fn().mockResolvedValue(undefined),
            getStatusStatistics: jest.fn().mockResolvedValue({
              active: 0, inactive: 0, suspended: 0, error: 0, total: 0
            })
          }
        }
      ]
    })
    .overrideGuard(AdminGuard)
    .useValue(mockAdminGuard)
    .compile();

    app = module.createNestApplication();
    app.useGlobalFilters(new AdminDatabaseExceptionFilter());
    await app.init();

    controller = module.get<AdminDatabaseController>(AdminDatabaseController);
  });

  afterAll(async () => {
    await app.close();
  });

  beforeEach(() => {
    requestCount = 0;
    concurrentRequests.clear();
    mockAdminGuard.canActivate.mockClear();
  });

  describe('Property 10: 权限验证严格性', () => {
    it('有效的管理员凭证应该通过验证', async () => {
      await PropertyTestRunner.runPropertyTest(
        '有效凭证权限验证',
        () => {
          const roles = ['super_admin', 'admin', 'moderator'];
          return {
            authToken: `Bearer token_${Math.random().toString(36).substring(7)}`,
            adminRole: roles[Math.floor(Math.random() * roles.length)],
            adminId: `admin_${Math.floor(Math.random() * 1000) + 100}`
          };
        },
        async ({ authToken, adminRole, adminId }) => {
          // 模拟设置请求头
          const mockRequest = {
            headers: {
              authorization: authToken,
              'x-admin-role': adminRole,
              'x-admin-id': adminId,
              'x-request-id': `req_${Date.now()}_${Math.random()}`
            }
          };
          
          const mockContext = {
            switchToHttp: () => ({
              getRequest: () => mockRequest
            })
          };
          
          const canActivate = mockAdminGuard.canActivate(mockContext);
          expect(canActivate).toBe(true);
        },
        { ...DEFAULT_PROPERTY_CONFIG, iterations: 30 }
      );
    });

    it('无效的认证令牌应该被拒绝', async () => {
      await PropertyTestRunner.runPropertyTest(
        '无效令牌权限拒绝',
        () => {
          const invalidTokens = [
            '', // 空令牌
            'InvalidToken', // 不是Bearer格式
            'Bearer', // 只有Bearer前缀
            'Basic dGVzdA==', // 错误的认证类型
            null,
            undefined
          ];
          
          return {
            authToken: invalidTokens[Math.floor(Math.random() * invalidTokens.length)],
            adminRole: 'admin',
            adminId: 'admin_123'
          };
        },
        async ({ authToken, adminRole, adminId }) => {
          const mockRequest = {
            headers: {
              authorization: authToken,
              'x-admin-role': adminRole,
              'x-admin-id': adminId,
              'x-request-id': `req_${Date.now()}_${Math.random()}`
            }
          };
          
          const mockContext = {
            switchToHttp: () => ({
              getRequest: () => mockRequest
            })
          };
          
          const canActivate = mockAdminGuard.canActivate(mockContext);
          expect(canActivate).toBe(false);
        },
        { ...DEFAULT_PROPERTY_CONFIG, iterations: 25 }
      );
    });

    it('无效的管理员角色应该被拒绝', async () => {
      await PropertyTestRunner.runPropertyTest(
        '无效角色权限拒绝',
        () => {
          const invalidRoles = [
            'user', // 普通用户角色
            'guest', // 访客角色
            'invalid_role', // 无效角色
            '', // 空角色
            'ADMIN', // 大小写错误
            null,
            undefined
          ];
          
          return {
            authToken: 'Bearer valid_token_123',
            adminRole: invalidRoles[Math.floor(Math.random() * invalidRoles.length)],
            adminId: 'admin_123'
          };
        },
        async ({ authToken, adminRole, adminId }) => {
          const mockRequest = {
            headers: {
              authorization: authToken,
              'x-admin-role': adminRole,
              'x-admin-id': adminId,
              'x-request-id': `req_${Date.now()}_${Math.random()}`
            }
          };
          
          const mockContext = {
            switchToHttp: () => ({
              getRequest: () => mockRequest
            })
          };
          
          const canActivate = mockAdminGuard.canActivate(mockContext);
          expect(canActivate).toBe(false);
        },
        { ...DEFAULT_PROPERTY_CONFIG, iterations: 25 }
      );
    });

    it('无效的管理员ID应该被拒绝', async () => {
      await PropertyTestRunner.runPropertyTest(
        '无效管理员ID权限拒绝',
        () => {
          const invalidIds = [
            '', // 空ID
            'a', // 太短的ID
            'ab', // 太短的ID
            null,
            undefined,
            '   ', // 只有空格
            'id with spaces' // 包含空格
          ];
          
          return {
            authToken: 'Bearer valid_token_123',
            adminRole: 'admin',
            adminId: invalidIds[Math.floor(Math.random() * invalidIds.length)]
          };
        },
        async ({ authToken, adminRole, adminId }) => {
          const mockRequest = {
            headers: {
              authorization: authToken,
              'x-admin-role': adminRole,
              'x-admin-id': adminId,
              'x-request-id': `req_${Date.now()}_${Math.random()}`
            }
          };
          
          const mockContext = {
            switchToHttp: () => ({
              getRequest: () => mockRequest
            })
          };
          
          const canActivate = mockAdminGuard.canActivate(mockContext);
          expect(canActivate).toBe(false);
        },
        { ...DEFAULT_PROPERTY_CONFIG, iterations: 25 }
      );
    });

    it('权限验证应该在所有端点中一致执行', async () => {
      await PropertyTestRunner.runPropertyTest(
        '权限验证一致性',
        () => ({
          validAuth: {
            authToken: 'Bearer valid_token_123',
            adminRole: 'admin',
            adminId: 'admin_123'
          },
          invalidAuth: {
            authToken: 'InvalidToken',
            adminRole: 'admin',
            adminId: 'admin_123'
          }
        }),
        async ({ validAuth, invalidAuth }) => {
          // 测试有效权限
          const validRequest = {
            headers: {
              authorization: validAuth.authToken,
              'x-admin-role': validAuth.adminRole,
              'x-admin-id': validAuth.adminId,
              'x-request-id': `req_${Date.now()}_${Math.random()}`
            }
          };
          
          const validContext = {
            switchToHttp: () => ({
              getRequest: () => validRequest
            })
          };
          
          expect(mockAdminGuard.canActivate(validContext)).toBe(true);
          
          // 测试无效权限
          const invalidRequest = {
            headers: {
              authorization: invalidAuth.authToken,
              'x-admin-role': invalidAuth.adminRole,
              'x-admin-id': invalidAuth.adminId,
              'x-request-id': `req_${Date.now()}_${Math.random()}`
            }
          };
          
          const invalidContext = {
            switchToHttp: () => ({
              getRequest: () => invalidRequest
            })
          };
          
          expect(mockAdminGuard.canActivate(invalidContext)).toBe(false);
        },
        { ...DEFAULT_PROPERTY_CONFIG, iterations: 20 }
      );
    });
  });

  describe('Property 15: 并发请求限流', () => {
    it('正常频率的请求应该被允许', async () => {
      await PropertyTestRunner.runPropertyTest(
        '正常频率请求允许',
        () => ({
          requestCount: Math.floor(Math.random() * 5) + 1 // 1-5个请求
        }),
        async ({ requestCount }) => {
          const results = [];
          
          for (let i = 0; i < requestCount; i++) {
            const mockRequest = {
              headers: {
                authorization: 'Bearer valid_token_123',
                'x-admin-role': 'admin',
                'x-admin-id': 'admin_123',
                'x-request-id': `req_${Date.now()}_${i}_${Math.random()}`
              }
            };
            
            const mockContext = {
              switchToHttp: () => ({
                getRequest: () => mockRequest
              })
            };
            
            const result = mockAdminGuard.canActivate(mockContext);
            results.push(result);
            
            // 小延迟避免时间戳冲突
            await new Promise(resolve => setTimeout(resolve, 10));
          }
          
          // 正常频率的请求都应该被允许
          results.forEach(result => {
            expect(result).toBe(true);
          });
        },
        { ...DEFAULT_PROPERTY_CONFIG, iterations: 20 }
      );
    });

    it('重复的请求ID应该被拒绝', async () => {
      await PropertyTestRunner.runPropertyTest(
        '重复请求ID拒绝',
        () => ({
          requestId: `req_${Date.now()}_${Math.random()}`
        }),
        async ({ requestId }) => {
          const mockRequest1 = {
            headers: {
              authorization: 'Bearer valid_token_123',
              'x-admin-role': 'admin',
              'x-admin-id': 'admin_123',
              'x-request-id': requestId
            }
          };
          
          const mockRequest2 = {
            headers: {
              authorization: 'Bearer valid_token_456',
              'x-admin-role': 'admin',
              'x-admin-id': 'admin_456',
              'x-request-id': requestId // 相同的请求ID
            }
          };
          
          const mockContext1 = {
            switchToHttp: () => ({
              getRequest: () => mockRequest1
            })
          };
          
          const mockContext2 = {
            switchToHttp: () => ({
              getRequest: () => mockRequest2
            })
          };
          
          // 第一个请求应该成功
          const result1 = mockAdminGuard.canActivate(mockContext1);
          expect(result1).toBe(true);
          
          // 第二个请求（重复ID）应该被拒绝
          const result2 = mockAdminGuard.canActivate(mockContext2);
          expect(result2).toBe(false);
        },
        { ...DEFAULT_PROPERTY_CONFIG, iterations: 15 }
      );
    });

    it('并发请求数量应该被正确跟踪', async () => {
      await PropertyTestRunner.runPropertyTest(
        '并发请求跟踪',
        () => ({
          concurrentCount: Math.floor(Math.random() * 8) + 3 // 3-10个并发请求
        }),
        async ({ concurrentCount }) => {
          const promises = [];
          const results = [];
          
          // 创建并发请求
          for (let i = 0; i < concurrentCount; i++) {
            const promise = new Promise((resolve) => {
              const mockRequest = {
                headers: {
                  authorization: 'Bearer valid_token_123',
                  'x-admin-role': 'admin',
                  'x-admin-id': `admin_${i}`,
                  'x-request-id': `req_${Date.now()}_${i}_${Math.random()}`
                }
              };
              
              const mockContext = {
                switchToHttp: () => ({
                  getRequest: () => mockRequest
                })
              };
              
              const result = mockAdminGuard.canActivate(mockContext);
              results.push(result);
              resolve(result);
            });
            
            promises.push(promise);
          }
          
          // 等待所有请求完成
          await Promise.all(promises);
          
          // 验证并发控制
          const successCount = results.filter(r => r === true).length;
          const failureCount = results.filter(r => r === false).length;
          
          expect(successCount + failureCount).toBe(concurrentCount);
          
          // 如果并发数超过限制，应该有一些请求被拒绝
          if (concurrentCount > 10) {
            expect(failureCount).toBeGreaterThan(0);
          }
        },
        { ...DEFAULT_PROPERTY_CONFIG, iterations: 15 }
      );
    });

    it('请求完成后应该释放并发槽位', async () => {
      await PropertyTestRunner.runPropertyTest(
        '并发槽位释放',
        () => ({}),
        async () => {
          const initialConcurrentSize = concurrentRequests.size;
          
          // 创建一个请求
          const mockRequest = {
            headers: {
              authorization: 'Bearer valid_token_123',
              'x-admin-role': 'admin',
              'x-admin-id': 'admin_123',
              'x-request-id': `req_${Date.now()}_${Math.random()}`
            }
          };
          
          const mockContext = {
            switchToHttp: () => ({
              getRequest: () => mockRequest
            })
          };
          
          const result = mockAdminGuard.canActivate(mockContext);
          expect(result).toBe(true);
          
          // 验证并发计数增加
          expect(concurrentRequests.size).toBe(initialConcurrentSize + 1);
          
          // 等待请求完成（模拟的100ms超时）
          await new Promise(resolve => setTimeout(resolve, 150));
          
          // 验证并发计数恢复
          expect(concurrentRequests.size).toBe(initialConcurrentSize);
        },
        { ...DEFAULT_PROPERTY_CONFIG, iterations: 10 }
      );
    });

    it('不同时间窗口的请求应该独立计算', async () => {
      await PropertyTestRunner.runPropertyTest(
        '时间窗口独立计算',
        () => ({}),
        async () => {
          const timestamp1 = Date.now();
          const timestamp2 = timestamp1 + 1100; // 下一秒
          
          // 第一个时间窗口的请求
          const mockRequest1 = {
            headers: {
              authorization: 'Bearer valid_token_123',
              'x-admin-role': 'admin',
              'x-admin-id': 'admin_123',
              'x-request-id': `req_${timestamp1}_1`
            }
          };
          
          const mockContext1 = {
            switchToHttp: () => ({
              getRequest: () => mockRequest1
            })
          };
          
          const result1 = mockAdminGuard.canActivate(mockContext1);
          expect(result1).toBe(true);
          
          // 模拟时间推进
          await new Promise(resolve => setTimeout(resolve, 1100));
          
          // 第二个时间窗口的请求
          const mockRequest2 = {
            headers: {
              authorization: 'Bearer valid_token_123',
              'x-admin-role': 'admin',
              'x-admin-id': 'admin_123',
              'x-request-id': `req_${timestamp2}_1`
            }
          };
          
          const mockContext2 = {
            switchToHttp: () => ({
              getRequest: () => mockRequest2
            })
          };
          
          const result2 = mockAdminGuard.canActivate(mockContext2);
          expect(result2).toBe(true);
        },
        { ...DEFAULT_PROPERTY_CONFIG, iterations: 5 }
      );
    });
  });
});