import { Test, TestingModule } from '@nestjs/testing';
import { NotFoundException } from '@nestjs/common';
import { WechatGameService } from './wechat-game.service';
import { GameConfigRepository } from './repositories/game-config.repository';
import { LevelRepository } from './repositories/level.repository';
import { GameConfig } from './entities/game-config.entity';
import { Level } from './entities/level.entity';

describe('WechatGameService', () => {
  let service: WechatGameService;

  const mockGameConfig: GameConfig = {
    id: 'config-uuid-1',
    configKey: 'game_speed',
    configValue: '1.5',
    description: 'Game speed multiplier',
    isActive: true,
    createdAt: new Date('2026-01-01'),
    updatedAt: new Date('2026-01-01'),
  };

  const mockLevel: Level = {
    id: 'level-1',
    imageUrl: 'https://example.com/meme1.jpg',
    answer: '答案一',
    hint1: '提示1',
    hint2: '提示2',
    hint3: null,
    sortOrder: 0,
    timeLimit: 60,
    createdAt: new Date('2026-01-01'),
    updatedAt: new Date('2026-01-01'),
  };

  const mockLevel2: Level = {
    id: 'level-2',
    imageUrl: 'https://example.com/meme2.jpg',
    answer: '答案二',
    hint1: '提示A',
    hint2: null,
    hint3: null,
    sortOrder: 1,
    timeLimit: null,
    createdAt: new Date('2026-01-01'),
    updatedAt: new Date('2026-01-01'),
  };

  const mockGameConfigRepository = {
    findActiveConfigs: jest.fn(),
    findByKey: jest.fn(),
  };

  const mockLevelRepository = {
    findAllOrdered: jest.fn(),
  };

  beforeEach(async () => {
    const module: TestingModule = await Test.createTestingModule({
      providers: [
        WechatGameService,
        { provide: GameConfigRepository, useValue: mockGameConfigRepository },
        { provide: LevelRepository, useValue: mockLevelRepository },
      ],
    }).compile();

    service = module.get<WechatGameService>(WechatGameService);
  });

  afterEach(() => {
    jest.clearAllMocks();
  });

  describe('getAllConfigs', () => {
    it('should return all active configs', async () => {
      mockGameConfigRepository.findActiveConfigs.mockResolvedValue([
        mockGameConfig,
      ]);

      const result = await service.getAllConfigs();

      expect(result.configs).toHaveLength(1);
      expect(result.total).toBe(1);
      expect(result.configs[0].configKey).toBe('game_speed');
      expect(result.configs[0].configValue).toBe('1.5');
    });

    it('should return empty array when no configs found', async () => {
      mockGameConfigRepository.findActiveConfigs.mockResolvedValue([]);

      const result = await service.getAllConfigs();

      expect(result.configs).toHaveLength(0);
      expect(result.total).toBe(0);
    });
  });

  describe('getConfigByKey', () => {
    it('should return config by key', async () => {
      mockGameConfigRepository.findByKey.mockResolvedValue(mockGameConfig);

      const result = await service.getConfigByKey('game_speed');

      expect(result.configKey).toBe('game_speed');
      expect(result.configValue).toBe('1.5');
      expect(mockGameConfigRepository.findByKey).toHaveBeenCalledWith(
        'game_speed',
      );
    });

    it('should throw NotFoundException when config not found', async () => {
      mockGameConfigRepository.findByKey.mockResolvedValue(null);

      await expect(service.getConfigByKey('nonexistent')).rejects.toThrow(
        NotFoundException,
      );
    });
  });

  describe('getAllLevels', () => {
    it('should return all levels with 1-indexed level numbers', async () => {
      mockLevelRepository.findAllOrdered.mockResolvedValue([
        mockLevel,
        mockLevel2,
      ]);

      const result = await service.getAllLevels();

      expect(result.levels).toHaveLength(2);
      expect(result.total).toBe(2);
      expect(result.levels[0].level).toBe(1);
      expect(result.levels[0].id).toBe('level-1');
      expect(result.levels[0].answer).toBe('答案一');
      expect(result.levels[1].level).toBe(2);
      expect(result.levels[1].id).toBe('level-2');
    });

    it('should return empty array when no levels exist', async () => {
      mockLevelRepository.findAllOrdered.mockResolvedValue([]);

      const result = await service.getAllLevels();

      expect(result.levels).toHaveLength(0);
      expect(result.total).toBe(0);
    });
  });

  describe('getLevelById', () => {
    it('should return level with correct level number', async () => {
      mockLevelRepository.findAllOrdered.mockResolvedValue([
        mockLevel,
        mockLevel2,
      ]);

      const result = await service.getLevelById('level-2');

      expect(result.id).toBe('level-2');
      expect(result.level).toBe(2);
      expect(result.answer).toBe('答案二');
    });

    it('should throw NotFoundException when level not found', async () => {
      mockLevelRepository.findAllOrdered.mockResolvedValue([mockLevel]);

      await expect(service.getLevelById('nonexistent')).rejects.toThrow(
        NotFoundException,
      );
    });
  });
});