// Copyright (c) 2026 Gordon Bolton. MIT License.
import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
import nock from 'nock';

// Mock dependencies
vi.mock('../../../server/utils/logger', () => ({
  logToFile: vi.fn()
}));

// Import after mocking
const DownloadMatcher = require('../../../server/services/DownloadMatcher');
const OmbiRetriever = require('../../../server/clients/OmbiRetriever');

describe('DownloadMatcher', () => {
  const ombiBaseUrl = 'http://localhost:5000';

  beforeEach(() => {
    nock.cleanAll();
    vi.clearAllMocks();
  });

  afterEach(() => {
    nock.cleanAll();
  });

  describe('addOmbiMatching', () => {
    it('should return early when ombiRetriever is missing', async () => {
      const downloadObj = { type: 'series', title: 'Test Show' };
      const series = { tvdbId: '12345', tmdbId: '67890' };
      const context = { ombiRetriever: null, ombiBaseUrl };

      await DownloadMatcher.addOmbiMatching(downloadObj, series, context);

      expect(downloadObj.ombiLink).toBeUndefined();
      expect(downloadObj.ombiRequestId).toBeUndefined();
    });

    it('should return early when ombiBaseUrl is missing', async () => {
      const downloadObj = { type: 'series', title: 'Test Show' };
      const series = { tvdbId: '12345', tmdbId: '67890' };

      const mockRetriever = {
        findTvRequest: vi.fn(),
        searchTv: vi.fn()
      };

      const context = { ombiRetriever: mockRetriever, ombiBaseUrl: null };

      await DownloadMatcher.addOmbiMatching(downloadObj, series, context);

      expect(mockRetriever.findTvRequest).not.toHaveBeenCalled();
      expect(downloadObj.ombiLink).toBeUndefined();
    });

    it('should return early when seriesOrMovie is missing', async () => {
      const downloadObj = { type: 'series', title: 'Test Show' };

      const mockRetriever = {
        findTvRequest: vi.fn(),
        searchTv: vi.fn()
      };

      const context = { ombiRetriever: mockRetriever, ombiBaseUrl };

      await DownloadMatcher.addOmbiMatching(downloadObj, null, context);

      expect(mockRetriever.findTvRequest).not.toHaveBeenCalled();
      expect(downloadObj.ombiLink).toBeUndefined();
    });

    it('should add ombiLink and ombiRequestId for TV request found by TVDB ID', async () => {
      const mockMovieRequests = [];
      const mockTvRequests = [
        { id: 101, title: 'Test Show', type: 'tv', theTvDbId: '12345' }
      ];

      nock(ombiBaseUrl)
        .get('/api/v1/Request/movie')
        .reply(200, mockMovieRequests);

      nock(ombiBaseUrl)
        .get('/api/v1/Request/tv')
        .reply(200, mockTvRequests);

      const ombiRetriever = new OmbiRetriever({
        id: 'test-ombi',
        name: 'Test Ombi',
        url: ombiBaseUrl,
        apiKey: 'test-key'
      });

      const downloadObj = { type: 'series', title: 'Test Show' };
      const series = { tvdbId: '12345', tmdbId: '67890' };
      const context = { ombiRetriever, ombiBaseUrl };

      await DownloadMatcher.addOmbiMatching(downloadObj, series, context);

      expect(downloadObj.ombiLink).toBe('http://localhost:5000/#/request/tv/101');
      expect(downloadObj.ombiRequestId).toBe(101);
      expect(downloadObj.ombiTooltip).toBe('Request');
    });

    it('should add ombiLink and ombiRequestId for TV request found by TMDB ID fallback', async () => {
      const mockMovieRequests = [];
      const mockTvRequests = [
        { id: 102, title: 'Test Show TMDB', type: 'tv', theMovieDbId: '67890' }
      ];

      nock(ombiBaseUrl)
        .get('/api/v1/Request/movie')
        .reply(200, mockMovieRequests);

      nock(ombiBaseUrl)
        .get('/api/v1/Request/tv')
        .reply(200, mockTvRequests);

      const ombiRetriever = new OmbiRetriever({
        id: 'test-ombi',
        name: 'Test Ombi',
        url: ombiBaseUrl,
        apiKey: 'test-key'
      });

      const downloadObj = { type: 'series', title: 'Test Show TMDB' };
      const series = { tvdbId: '99999', tmdbId: '67890' };
      const context = { ombiRetriever, ombiBaseUrl };

      await DownloadMatcher.addOmbiMatching(downloadObj, series, context);

      expect(downloadObj.ombiLink).toBe('http://localhost:5000/#/request/tv/102');
      expect(downloadObj.ombiRequestId).toBe(102);
      expect(downloadObj.ombiTooltip).toBe('Request');
    });

    it('should add ombiLink and ombiRequestId for movie request found by TMDB ID', async () => {
      const mockMovieRequests = [
        { id: 201, title: 'Test Movie', type: 'movie', theMovieDbId: '54321' }
      ];
      const mockTvRequests = [];

      nock(ombiBaseUrl)
        .get('/api/v1/Request/movie')
        .reply(200, mockMovieRequests);

      nock(ombiBaseUrl)
        .get('/api/v1/Request/tv')
        .reply(200, mockTvRequests);

      const ombiRetriever = new OmbiRetriever({
        id: 'test-ombi',
        name: 'Test Ombi',
        url: ombiBaseUrl,
        apiKey: 'test-key'
      });

      const downloadObj = { type: 'movie', title: 'Test Movie' };
      const movie = { tmdbId: '54321', imdbId: 'tt54321' };
      const context = { ombiRetriever, ombiBaseUrl };

      await DownloadMatcher.addOmbiMatching(downloadObj, movie, context);

      expect(downloadObj.ombiLink).toBe('http://localhost:5000/#/request/movie/201');
      expect(downloadObj.ombiRequestId).toBe(201);
      expect(downloadObj.ombiTooltip).toBe('Request');
    });

    it('should add ombiLink and ombiRequestId for movie request found by IMDB ID fallback', async () => {
      const mockMovieRequests = [
        { id: 202, title: 'Test Movie IMDB', type: 'movie', imdbId: 'tt98765' }
      ];
      const mockTvRequests = [];

      nock(ombiBaseUrl)
        .get('/api/v1/Request/movie')
        .reply(200, mockMovieRequests);

      nock(ombiBaseUrl)
        .get('/api/v1/Request/tv')
        .reply(200, mockTvRequests);

      const ombiRetriever = new OmbiRetriever({
        id: 'test-ombi',
        name: 'Test Ombi',
        url: ombiBaseUrl,
        apiKey: 'test-key'
      });

      const downloadObj = { type: 'movie', title: 'Test Movie IMDB' };
      const movie = { tmdbId: '99999', imdbId: 'tt98765' };
      const context = { ombiRetriever, ombiBaseUrl };

      await DownloadMatcher.addOmbiMatching(downloadObj, movie, context);

      expect(downloadObj.ombiLink).toBe('http://localhost:5000/#/request/movie/202');
      expect(downloadObj.ombiRequestId).toBe(202);
      expect(downloadObj.ombiTooltip).toBe('Request');
    });

    it('should add search link and tooltip when no request found but search succeeds', async () => {
      const mockMovieRequests = [];
      const mockTvRequests = [];
      const mockSearchResult = { id: 12345, title: 'Test Show Search', theTvDbId: '11111' };

      nock(ombiBaseUrl)
        .get('/api/v1/Request/movie')
        .reply(200, mockMovieRequests);

      nock(ombiBaseUrl)
        .get('/api/v1/Request/tv')
        .reply(200, mockTvRequests);

      nock(ombiBaseUrl)
        .get('/api/v1/Search/tv/11111')
        .reply(200, mockSearchResult);

      const ombiRetriever = new OmbiRetriever({
        id: 'test-ombi',
        name: 'Test Ombi',
        url: ombiBaseUrl,
        apiKey: 'test-key'
      });

      const downloadObj = { type: 'series', title: 'Test Show Search' };
      const series = { tvdbId: '11111', tmdbId: '22222' };
      const context = { ombiRetriever, ombiBaseUrl };

      await DownloadMatcher.addOmbiMatching(downloadObj, series, context);

      expect(downloadObj.ombiLink).toBe('http://localhost:5000/#/tv/search/12345');
      expect(downloadObj.ombiTooltip).toBe('Search');
      expect(downloadObj.ombiRequestId).toBeUndefined();
    });

    it('should add movie search link for movie type', async () => {
      const mockMovieRequests = [];
      const mockTvRequests = [];
      const mockSearchResult = { id: 54321, title: 'Test Movie Search', theMovieDbId: '33333' };

      nock(ombiBaseUrl)
        .get('/api/v1/Request/movie')
        .reply(200, mockMovieRequests);

      nock(ombiBaseUrl)
        .get('/api/v1/Request/tv')
        .reply(200, mockTvRequests);

      nock(ombiBaseUrl)
        .get('/api/v1/Search/movie/33333')
        .reply(200, mockSearchResult);

      const ombiRetriever = new OmbiRetriever({
        id: 'test-ombi',
        name: 'Test Ombi',
        url: ombiBaseUrl,
        apiKey: 'test-key'
      });

      const downloadObj = { type: 'movie', title: 'Test Movie Search' };
      const movie = { tmdbId: '33333', imdbId: 'tt33333' };
      const context = { ombiRetriever, ombiBaseUrl };

      await DownloadMatcher.addOmbiMatching(downloadObj, movie, context);

      expect(downloadObj.ombiLink).toBe('http://localhost:5000/#/movie/search/54321');
      expect(downloadObj.ombiTooltip).toBe('Search');
      expect(downloadObj.ombiRequestId).toBeUndefined();
    });

    it('should handle errors gracefully without breaking download object', async () => {
      const mockRetriever = {
        findTvRequest: vi.fn().mockRejectedValue(new Error('Ombi API error')),
        searchTv: vi.fn().mockRejectedValue(new Error('Search error'))
      };

      const downloadObj = { type: 'series', title: 'Test Show Error' };
      const series = { tvdbId: '66666', tmdbId: '77777' };
      const context = { ombiRetriever: mockRetriever, ombiBaseUrl };

      // Should not throw error
      await expect(DownloadMatcher.addOmbiMatching(downloadObj, series, context)).resolves.not.toThrow();

      // Download object should still have original data
      expect(downloadObj.title).toBe('Test Show Error');
      expect(downloadObj.ombiLink).toBeUndefined();
      expect(downloadObj.ombiRequestId).toBeUndefined();
    });

    it('should do nothing for unknown download type', async () => {
      const mockRetriever = {
        findTvRequest: vi.fn(),
        findMovieRequest: vi.fn()
      };

      const downloadObj = { type: 'unknown', title: 'Unknown Type' };
      const media = { id: 123 };
      const context = { ombiRetriever: mockRetriever, ombiBaseUrl };

      await DownloadMatcher.addOmbiMatching(downloadObj, media, context);

      expect(mockRetriever.findTvRequest).not.toHaveBeenCalled();
      expect(mockRetriever.findMovieRequest).not.toHaveBeenCalled();
      expect(downloadObj.ombiLink).toBeUndefined();
    });
  });

  describe('buildSeriesMapFromRecords', () => {
    it('should build a map from queue and history records', () => {
      const queueRecords = [
        { seriesId: 1, series: { id: 1, title: 'Series 1' } }
      ];
      const historyRecords = [
        { seriesId: 2, series: { id: 2, title: 'Series 2' } }
      ];

      const result = DownloadMatcher.buildSeriesMapFromRecords(queueRecords, historyRecords);

      expect(result.get(1)).toEqual({ id: 1, title: 'Series 1' });
      expect(result.get(2)).toEqual({ id: 2, title: 'Series 2' });
    });

    it('should not overwrite existing series in map', () => {
      const queueRecords = [
        { seriesId: 1, series: { id: 1, title: 'Series 1' } }
      ];
      const historyRecords = [
        { seriesId: 1, series: { id: 1, title: 'Series 1 from History' } }
      ];

      const result = DownloadMatcher.buildSeriesMapFromRecords(queueRecords, historyRecords);

      expect(result.get(1).title).toBe('Series 1');
    });
  });

  describe('buildMoviesMapFromRecords', () => {
    it('should build a map from queue and history records', () => {
      const queueRecords = [
        { movieId: 1, movie: { id: 1, title: 'Movie 1' } }
      ];
      const historyRecords = [
        { movieId: 2, movie: { id: 2, title: 'Movie 2' } }
      ];

      const result = DownloadMatcher.buildMoviesMapFromRecords(queueRecords, historyRecords);

      expect(result.get(1)).toEqual({ id: 1, title: 'Movie 1' });
      expect(result.get(2)).toEqual({ id: 2, title: 'Movie 2' });
    });
  });

  describe('getSlotStatusAndSpeed', () => {
    it('should return Paused status when queue is paused', () => {
      const slot = { status: 'Downloading' };
      const result = DownloadMatcher.getSlotStatusAndSpeed(slot, 'Paused', '0', '0');

      expect(result.status).toBe('Paused');
      expect(result.speed).toBe('0');
    });

    it('should return slot status when queue is active', () => {
      const slot = { status: 'Downloading' };
      const result = DownloadMatcher.getSlotStatusAndSpeed(slot, 'Active', '1.5 MB/s', '1536');

      expect(result.status).toBe('Downloading');
      expect(result.speed).toBe('1.5 MB/s');
    });
  });
});