import { describe, it, expect, vi, beforeEach, Mock } from 'vitest';
import { GetLeagueUseCase, GetLeagueQuery } from './GetLeagueUseCase';
import { LeagueRepository } from '../ports/LeagueRepository';
import { LeagueEventPublisher } from '../ports/LeagueEventPublisher';

describe('GetLeagueUseCase', () => {
  let mockLeagueRepository: LeagueRepository;
  let mockEventPublisher: LeagueEventPublisher;
  let useCase: GetLeagueUseCase;

  const mockLeague = {
    id: 'league-1',
    name: 'Test League',
    ownerId: 'owner-1',
  };

  beforeEach(() => {
    mockLeagueRepository = {
      create: vi.fn() as unknown as Mock,
      findById: vi.fn().mockResolvedValue(mockLeague) as unknown as Mock,
      findByName: vi.fn() as unknown as Mock,
      findByOwner: vi.fn() as unknown as Mock,
      search: vi.fn() as unknown as Mock,
      update: vi.fn() as unknown as Mock,
      delete: vi.fn() as unknown as Mock,
      getStats: vi.fn() as unknown as Mock,
      updateStats: vi.fn() as unknown as Mock,
      getFinancials: vi.fn() as unknown as Mock,
      updateFinancials: vi.fn() as unknown as Mock,
      getStewardingMetrics: vi.fn() as unknown as Mock,
      updateStewardingMetrics: vi.fn() as unknown as Mock,
      getPerformanceMetrics: vi.fn() as unknown as Mock,
      updatePerformanceMetrics: vi.fn() as unknown as Mock,
      getRatingMetrics: vi.fn() as unknown as Mock,
      updateRatingMetrics: vi.fn() as unknown as Mock,
      getTrendMetrics: vi.fn() as unknown as Mock,
      updateTrendMetrics: vi.fn() as unknown as Mock,
      getSuccessRateMetrics: vi.fn() as unknown as Mock,
      updateSuccessRateMetrics: vi.fn() as unknown as Mock,
      getResolutionTimeMetrics: vi.fn() as unknown as Mock,
      updateResolutionTimeMetrics: vi.fn() as unknown as Mock,
      getComplexSuccessRateMetrics: vi.fn() as unknown as Mock,
      updateComplexSuccessRateMetrics: vi.fn() as unknown as Mock,
      getComplexResolutionTimeMetrics: vi.fn() as unknown as Mock,
      updateComplexResolutionTimeMetrics: vi.fn() as unknown as Mock,
      getLeagueMembers: vi.fn() as unknown as Mock,
      getPendingRequests: vi.fn() as unknown as Mock,
      addLeagueMembers: vi.fn() as unknown as Mock,
      updateLeagueMember: vi.fn() as unknown as Mock,
      removeLeagueMember: vi.fn() as unknown as Mock,
      addPendingRequests: vi.fn() as unknown as Mock,
      removePendingRequest: vi.fn() as unknown as Mock,
    };
    mockEventPublisher = {
      emitLeagueCreated: vi.fn() as unknown as Mock,
      emitLeagueUpdated: vi.fn() as unknown as Mock,
      emitLeagueDeleted: vi.fn() as unknown as Mock,
      emitLeagueAccessed: vi.fn().mockResolvedValue(undefined) as unknown as Mock,
      emitLeagueRosterAccessed: vi.fn() as unknown as Mock,
      getLeagueCreatedEventCount: vi.fn() as unknown as Mock,
      getLeagueUpdatedEventCount: vi.fn() as unknown as Mock,
      getLeagueDeletedEventCount: vi.fn() as unknown as Mock,
      getLeagueAccessedEventCount: vi.fn() as unknown as Mock,
      getLeagueRosterAccessedEventCount: vi.fn() as unknown as Mock,
      clear: vi.fn() as unknown as Mock,
    };
    useCase = new GetLeagueUseCase(mockLeagueRepository, mockEventPublisher);
  });

  it('should return league data', async () => {
    const query: GetLeagueQuery = { leagueId: 'league-1' };
    const result = await useCase.execute(query);

    expect(result).toEqual(mockLeague);
    expect(mockLeagueRepository.findById).toHaveBeenCalledWith('league-1');
    expect(mockEventPublisher.emitLeagueAccessed).not.toHaveBeenCalled();
  });

  it('should emit event if driverId is provided', async () => {
    const query: GetLeagueQuery = { leagueId: 'league-1', driverId: 'driver-1' };
    await useCase.execute(query);

    expect(mockEventPublisher.emitLeagueAccessed).toHaveBeenCalled();
  });

  it('should throw error if league not found', async () => {
    (mockLeagueRepository.findById as Mock).mockResolvedValue(null);
    const query: GetLeagueQuery = { leagueId: 'non-existent' };

    await expect(useCase.execute(query)).rejects.toThrow('League with id non-existent not found');
  });

  it('should throw error if leagueId is missing', async () => {
    const query = {} as unknown as GetLeagueQuery;
    await expect(useCase.execute(query)).rejects.toThrow('League ID is required');
  });
});