import { describe, it, expect, vi, beforeEach } from 'vitest';
import { LeagueScheduleAdminPageQuery } from './LeagueScheduleAdminPageQuery';
import { LeagueService } from '@/lib/services/leagues/LeagueService';
import { Result } from '@/lib/contracts/Result';
import { LeagueScheduleViewDataBuilder } from '@/lib/builders/view-data/LeagueScheduleViewDataBuilder';
import { mapToPresentationError } from '@/lib/contracts/page-queries/PresentationError';

// Mock dependencies
vi.mock('@/lib/services/leagues/LeagueService', () => ({
  LeagueService: vi.fn(class {
    getScheduleAdminData = vi.fn();
  }),
}));

vi.mock('@/lib/builders/view-data/LeagueScheduleViewDataBuilder', () => ({
  LeagueScheduleViewDataBuilder: {
    build: vi.fn(),
  },
}));

vi.mock('@/lib/contracts/page-queries/PresentationError', () => ({
  mapToPresentationError: vi.fn(),
}));

describe('LeagueScheduleAdminPageQuery', () => {
  let query: LeagueScheduleAdminPageQuery;
  let mockServiceInstance: any;

  beforeEach(() => {
    vi.clearAllMocks();
    query = new LeagueScheduleAdminPageQuery();
    mockServiceInstance = {
      getScheduleAdminData: vi.fn(),
    };
    (LeagueService as any).mockImplementation(function () {
      return mockServiceInstance;
    });
  });

  it('should return view data when service succeeds', async () => {
    const input = { leagueId: 'league-123', seasonId: 'season-456' };
    const apiDto = {
      leagueId: 'league-123',
      schedule: {
        races: [
          {
            id: 'race-1',
            name: 'Race 1',
            scheduledAt: '2024-01-01',
            track: 'Track 1',
            car: 'Car 1',
            sessionType: 'Practice',
          },
        ],
      },
    };
    const viewData = { leagueId: 'league-123', races: [] };

    mockServiceInstance.getScheduleAdminData.mockResolvedValue(Result.ok(apiDto));
    (LeagueScheduleViewDataBuilder.build as any).mockReturnValue(viewData);

    const result = await query.execute(input);

    expect(result.isOk()).toBe(true);
    expect(result.unwrap()).toEqual(viewData);
    expect(LeagueService).toHaveBeenCalled();
    expect(mockServiceInstance.getScheduleAdminData).toHaveBeenCalledWith(input.leagueId, input.seasonId);
    expect(LeagueScheduleViewDataBuilder.build).toHaveBeenCalledWith({
      leagueId: apiDto.leagueId,
      races: [
        {
          id: 'race-1',
          name: 'Race 1',
          date: '2024-01-01',
          track: 'Track 1',
          car: 'Car 1',
          sessionType: 'Practice',
        },
      ],
    });
  });

  it('should return view data when seasonId is optional', async () => {
    const input = { leagueId: 'league-123' };
    const apiDto = {
      leagueId: 'league-123',
      schedule: { races: [] },
    };
    const viewData = { leagueId: 'league-123', races: [] };

    mockServiceInstance.getScheduleAdminData.mockResolvedValue(Result.ok(apiDto));
    (LeagueScheduleViewDataBuilder.build as any).mockReturnValue(viewData);

    const result = await query.execute(input);

    expect(result.isOk()).toBe(true);
    expect(mockServiceInstance.getScheduleAdminData).toHaveBeenCalledWith(input.leagueId, undefined);
  });

  it('should return mapped presentation error when service fails', async () => {
    const input = { leagueId: 'league-123' };
    const serviceError = { type: 'notFound' };
    const presentationError = 'notFound';

    mockServiceInstance.getScheduleAdminData.mockResolvedValue(Result.err(serviceError));
    (mapToPresentationError as any).mockReturnValue(presentationError);

    const result = await query.execute(input);

    expect(result.isErr()).toBe(true);
    expect(result.getError()).toBe(presentationError);
    expect(mapToPresentationError).toHaveBeenCalledWith(serviceError);
  });

  it('should provide a static execute method', async () => {
    const input = { leagueId: 'league-123' };
    const apiDto = {
      leagueId: 'league-123',
      schedule: { races: [] },
    };
    const viewData = { leagueId: 'league-123', races: [] };

    mockServiceInstance.getScheduleAdminData.mockResolvedValue(Result.ok(apiDto));
    (LeagueScheduleViewDataBuilder.build as any).mockReturnValue(viewData);

    const result = await LeagueScheduleAdminPageQuery.execute(input);

    expect(result.isOk()).toBe(true);
    expect(result.unwrap()).toEqual(viewData);
  });
});