import { describe, it, expect, beforeEach, vi, Mock } from 'vitest';
import {
  GetAllLeaguesWithCapacityUseCase,
  type GetAllLeaguesWithCapacityInput,
  type GetAllLeaguesWithCapacityResult,
  type LeagueCapacitySummary,
} from './GetAllLeaguesWithCapacityUseCase';
import type { ILeagueRepository } from '../../domain/repositories/ILeagueRepository';
import type { ILeagueMembershipRepository } from '../../domain/repositories/ILeagueMembershipRepository';
import type { UseCaseOutputPort } from '@core/shared/application/UseCaseOutputPort';

describe('GetAllLeaguesWithCapacityUseCase', () => {
  let mockLeagueRepo: { findAll: Mock };
  let mockMembershipRepo: { getLeagueMembers: Mock };
  let output: UseCaseOutputPort<GetAllLeaguesWithCapacityResult> & { present: Mock };

  beforeEach(() => {
    mockLeagueRepo = { findAll: vi.fn() };
    mockMembershipRepo = { getLeagueMembers: vi.fn() };
    output = { present: vi.fn() } as unknown as typeof output;
  });

  it('should return leagues with capacity information', async () => {
    const useCase = new GetAllLeaguesWithCapacityUseCase(
      mockLeagueRepo as unknown as ILeagueRepository,
      mockMembershipRepo as unknown as ILeagueMembershipRepository,
      output,
    );

    const league1 = { id: 'league1', name: 'Test League 1', settings: { maxDrivers: 10 } };
    const league2 = { id: 'league2', name: 'Test League 2', settings: { maxDrivers: 20 } };
    const members1 = [
      { status: 'active', role: 'member' },
      { status: 'active', role: 'owner' },
      { status: 'inactive', role: 'member' },
    ];
    const members2 = [
      { status: 'active', role: 'admin' },
    ];

    mockLeagueRepo.findAll.mockResolvedValue([league1, league2]);
    mockMembershipRepo.getLeagueMembers
      .mockResolvedValueOnce(members1)
      .mockResolvedValueOnce(members2);

    const result = await useCase.execute({} as GetAllLeaguesWithCapacityInput);

    expect(result.isOk()).toBe(true);
    expect(result.unwrap()).toBeUndefined();

    expect(output.present).toHaveBeenCalledTimes(1);

    const presented = output.present.mock.calls[0][0] as GetAllLeaguesWithCapacityResult;
    expect(presented.leagues).toHaveLength(2);

    const [first, second] = presented.leagues as LeagueCapacitySummary[];

    expect(first.league).toEqual(league1);
    expect(first.currentDrivers).toBe(2);
    expect(first.maxDrivers).toBe(10);

    expect(second.league).toEqual(league2);
    expect(second.currentDrivers).toBe(1);
    expect(second.maxDrivers).toBe(20);
  });

  it('should return empty result when no leagues', async () => {
    const useCase = new GetAllLeaguesWithCapacityUseCase(
      mockLeagueRepo as unknown as ILeagueRepository,
      mockMembershipRepo as unknown as ILeagueMembershipRepository,
      output,
    );

    mockLeagueRepo.findAll.mockResolvedValue([]);

    const result = await useCase.execute({} as GetAllLeaguesWithCapacityInput);

    expect(result.isOk()).toBe(true);
    expect(result.unwrap()).toBeUndefined();

    expect(output.present).toHaveBeenCalledTimes(1);
    const presented = output.present.mock.calls[0][0] as GetAllLeaguesWithCapacityResult;
    expect(presented.leagues).toEqual([]);
  });
});