import { describe, it, expect, vi, beforeEach } from 'vitest';

vi.mock('../../src/services/igdbClient', () => ({
  searchGames: vi.fn(),
  getGameById: vi.fn(),
}));

vi.mock('../../src/services/rawgClient', () => ({
  searchGames: vi.fn(),
  getGameById: vi.fn(),
}));

vi.mock('../../src/services/thegamesdbClient', () => ({
  searchGames: vi.fn(),
  getGameById: vi.fn(),
}));

import * as igdb from '../../src/services/igdbClient';
import * as rawg from '../../src/services/rawgClient';
import * as tgdb from '../../src/services/thegamesdbClient';
import { enrichGame, searchGames } from '../../src/services/metadataService';

describe('services/metadataService', () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  it('prioriza IGDB cuando hay resultados', async () => {
    (igdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([
      {
        id: 11,
        name: 'Sonic',
        slug: 'sonic',
        releaseDate: '1991-06-23',
        genres: ['Platform'],
        coverUrl: 'http://img',
        source: 'igdb',
      },
    ]);

    (rawg.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);
    (tgdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);

    const res = await enrichGame({ title: 'Sonic' });
    expect(res).not.toBeNull();
    expect(res?.source).toBe('igdb');
    expect(res?.externalIds.igdb).toBe(11);
    expect(res?.title).toBe('Sonic');
  });

  it('cae a RAWG cuando IGDB no responde resultados', async () => {
    (igdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);

    (rawg.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([
      {
        id: 22,
        name: 'Sonic (rawg)',
        slug: 'sonic-rawg',
        releaseDate: '1991-06-23',
        genres: ['Platform'],
        coverUrl: 'http://img',
        source: 'rawg',
      },
    ]);

    (tgdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);

    const res = await enrichGame({ title: 'Sonic' });
    expect(res).not.toBeNull();
    expect(res?.source).toBe('rawg');
    expect(res?.externalIds.rawg).toBe(22);
  });

  it('retorna null si no hay resultados en ninguna API', async () => {
    (igdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);
    (rawg.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);
    (tgdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);

    const res = await enrichGame({ title: 'Juego inexistente' });
    expect(res).toBeNull();
  });

  describe('searchGames', () => {
    it('debería buscar en paralelo en IGDB, RAWG y TheGamesDB', async () => {
      (igdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([
        {
          id: 1,
          name: 'Super Mario Bros.',
          slug: 'super-mario-bros',
          releaseDate: '1985-09-13',
          genres: ['Platform'],
          coverUrl: 'http://igdb.com/cover.jpg',
          source: 'igdb',
        },
      ]);

      (rawg.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([
        {
          id: 2,
          name: 'Super Mario Bros.',
          slug: 'super-mario-bros-rawg',
          releaseDate: '1985-09-13',
          genres: ['Platform'],
          coverUrl: 'http://rawg.com/cover.jpg',
          source: 'rawg',
        },
      ]);

      (tgdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([
        {
          id: 3,
          name: 'Super Mario Bros.',
          slug: 'super-mario-bros-tgdb',
          releaseDate: '1985-09-13',
          genres: ['Platform'],
          coverUrl: 'http://tgdb.com/cover.jpg',
          source: 'thegamesdb',
        },
      ]);

      const results = await searchGames({ title: 'Super Mario Bros.' });

      expect(results.length).toBeGreaterThan(0);
      expect(igdb.searchGames).toHaveBeenCalledWith('Super Mario Bros.', undefined);
      expect(rawg.searchGames).toHaveBeenCalledWith('Super Mario Bros.');
      expect(tgdb.searchGames).toHaveBeenCalledWith('Super Mario Bros.');
    });

    it('debería deduplicar resultados por nombre normalizado', async () => {
      (igdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([
        {
          id: 1,
          name: 'Super Mario Bros.',
          slug: 'super-mario-bros',
          releaseDate: '1985-09-13',
          genres: ['Platform'],
          coverUrl: 'http://igdb.com/cover.jpg',
          source: 'igdb',
        },
      ]);

      (rawg.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([
        {
          id: 2,
          name: 'Super Mario Bros.',
          slug: 'super-mario-bros-rawg',
          releaseDate: '1985-09-13',
          genres: ['Platform'],
          coverUrl: 'http://rawg.com/cover.jpg',
          source: 'rawg',
        },
      ]);

      (tgdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);

      const results = await searchGames({ title: 'Super Mario Bros.' });

      // Debería haber un solo resultado (prioridad IGDB)
      expect(results.length).toBe(1);
      expect(results[0].source).toBe('igdb');
      expect(results[0].externalIds.igdb).toBe(1);
      expect(results[0].externalIds.rawg).toBe(2);
    });

    it('debería priorizar IGDB > RAWG > TheGamesDB en deduplicación', async () => {
      (igdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([
        {
          id: 1,
          name: 'Zelda',
          slug: 'zelda',
          releaseDate: '1986-02-21',
          genres: ['Adventure'],
          coverUrl: 'http://igdb.com/zelda.jpg',
          source: 'igdb',
        },
      ]);

      (rawg.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([
        {
          id: 2,
          name: 'Zelda',
          slug: 'zelda-rawg',
          releaseDate: '1986-02-21',
          genres: ['Adventure'],
          coverUrl: 'http://rawg.com/zelda.jpg',
          source: 'rawg',
        },
      ]);

      (tgdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([
        {
          id: 3,
          name: 'Zelda',
          slug: 'zelda-tgdb',
          releaseDate: '1986-02-21',
          genres: ['Adventure'],
          coverUrl: 'http://tgdb.com/zelda.jpg',
          source: 'thegamesdb',
        },
      ]);

      const results = await searchGames({ title: 'Zelda' });

      expect(results.length).toBe(1);
      expect(results[0].source).toBe('igdb');
      expect(results[0].externalIds).toEqual({
        igdb: 1,
        rawg: 2,
        thegamesdb: 3,
      });
    });

    it('debería devolver array vacío si no hay resultados', async () => {
      (igdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);
      (rawg.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);
      (tgdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);

      const results = await searchGames({ title: 'Juego inexistente' });

      expect(results).toEqual([]);
    });

    it('debería manejar errores de API y continuar con otras fuentes', async () => {
      (igdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockRejectedValue(
        new Error('IGDB error')
      );

      (rawg.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([
        {
          id: 2,
          name: 'Sonic',
          slug: 'sonic',
          releaseDate: '1991-06-23',
          genres: ['Platform'],
          coverUrl: 'http://rawg.com/sonic.jpg',
          source: 'rawg',
        },
      ]);

      (tgdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);

      const results = await searchGames({ title: 'Sonic' });

      expect(results.length).toBe(1);
      expect(results[0].source).toBe('rawg');
    });

    it('debería pasar el parámetro platform a IGDB', async () => {
      (igdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);
      (rawg.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);
      (tgdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);

      await searchGames({ title: 'Mario', platform: 'NES' });

      expect(igdb.searchGames).toHaveBeenCalledWith('Mario', 'NES');
      expect(rawg.searchGames).toHaveBeenCalledWith('Mario');
      expect(tgdb.searchGames).toHaveBeenCalledWith('Mario');
    });

    it('debería mantener múltiples resultados con nombres diferentes', async () => {
      (igdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([
        {
          id: 1,
          name: 'Super Mario Bros.',
          slug: 'super-mario-bros',
          releaseDate: '1985-09-13',
          genres: ['Platform'],
          coverUrl: 'http://igdb.com/smb.jpg',
          source: 'igdb',
        },
        {
          id: 2,
          name: 'Super Mario Bros. 2',
          slug: 'super-mario-bros-2',
          releaseDate: '1988-10-09',
          genres: ['Platform'],
          coverUrl: 'http://igdb.com/smb2.jpg',
          source: 'igdb',
        },
      ]);

      (rawg.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);
      (tgdb.searchGames as unknown as ReturnType<typeof vi.fn>).mockResolvedValue([]);

      const results = await searchGames({ title: 'Super Mario' });

      expect(results.length).toBe(2);
      expect(results[0].name).toBe('Super Mario Bros.');
      expect(results[1].name).toBe('Super Mario Bros. 2');
    });
  });
});