import { describe, it, expect, vi, beforeEach } from 'vitest';
import { HomePageQuery } from './HomePageQuery';
import { HomeService } from '@/lib/services/home/HomeService';
import { Result } from '@/lib/contracts/Result';
import { HomeViewDataBuilder } from '@/lib/builders/view-data/HomeViewDataBuilder';

// Mock dependencies
vi.mock('@/lib/services/home/HomeService', () => ({
  HomeService: vi.fn().mockImplementation(function (this: any) {
    this.getHomeData = vi.fn();
    this.shouldRedirectToDashboard = vi.fn();
  }),
}));

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

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

  beforeEach(() => {
    vi.clearAllMocks();
    query = new HomePageQuery();
    mockServiceInstance = {
      getHomeData: vi.fn(),
      shouldRedirectToDashboard: vi.fn(),
    };
    (HomeService as any).mockImplementation(function (this: any) {
      return mockServiceInstance;
    });
  });

  describe('execute', () => {
    it('should return view data when service succeeds', async () => {
      const apiDto = { some: 'data' };
      const viewData = { transformed: 'data' } as any;

      mockServiceInstance.getHomeData.mockResolvedValue(Result.ok(apiDto));
      (HomeViewDataBuilder.build as any).mockReturnValue(viewData);

      const result = await query.execute();

      expect(result.isOk()).toBe(true);
      expect(result.unwrap()).toEqual(viewData);
      expect(HomeService).toHaveBeenCalled();
      expect(mockServiceInstance.getHomeData).toHaveBeenCalled();
      expect(HomeViewDataBuilder.build).toHaveBeenCalledWith(apiDto);
    });

    it('should return error when service fails', async () => {
      mockServiceInstance.getHomeData.mockResolvedValue(Result.err('Service Error'));

      const result = await query.execute();

      expect(result.isErr()).toBe(true);
      expect(result.getError()).toBe('Error');
    });

    it('should return error on exception', async () => {
      mockServiceInstance.getHomeData.mockRejectedValue(new Error('Unexpected error'));

      const result = await query.execute();

      expect(result.isErr()).toBe(true);
      expect(result.getError()).toBe('Error');
    });

    it('should provide a static execute method', async () => {
      const apiDto = { some: 'data' };
      const viewData = { transformed: 'data' } as any;

      mockServiceInstance.getHomeData.mockResolvedValue(Result.ok(apiDto));
      (HomeViewDataBuilder.build as any).mockReturnValue(viewData);

      const result = await HomePageQuery.execute();

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

  describe('shouldRedirectToDashboard', () => {
    it('should return true when service returns true', async () => {
      mockServiceInstance.shouldRedirectToDashboard.mockResolvedValue(true);

      const result = await HomePageQuery.shouldRedirectToDashboard();

      expect(result).toBe(true);
      expect(mockServiceInstance.shouldRedirectToDashboard).toHaveBeenCalled();
    });

    it('should return false when service returns false', async () => {
      mockServiceInstance.shouldRedirectToDashboard.mockResolvedValue(false);

      const result = await HomePageQuery.shouldRedirectToDashboard();

      expect(result).toBe(false);
    });
  });
});