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

const require = createRequire(import.meta.url);
const { decorateDownloadsWithArrLinks } = require('../../server/utils/ombiHelpers.js');
const arrRetrieverRegistry = require('../../server/utils/arrRetrievers.js');

const SONARR_BASE = 'https://sonarr-decor.test';
const RADARR_BASE = 'https://radarr-decor.test';

describe('decorateDownloadsWithArrLinks Integration Tests', () => {
  beforeEach(() => {
    vi.restoreAllMocks();
    nock.cleanAll();

    // Reset the singleton retrievers registry so we can inject our test instances
    arrRetrieverRegistry.retrievers.clear();
    arrRetrieverRegistry.initialized = false;

    // Configure test environment variables for retrievers
    process.env.SONARR_INSTANCES = JSON.stringify([
      { id: 'sonarr-1', name: 'Test Sonarr', url: SONARR_BASE, apiKey: 'sonarr-key' }
    ]);
    process.env.RADARR_INSTANCES = JSON.stringify([
      { id: 'radarr-1', name: 'Test Radarr', url: RADARR_BASE, apiKey: 'radarr-key' }
    ]);
  });

  afterEach(() => {
    nock.cleanAll();
    delete process.env.SONARR_INSTANCES;
    delete process.env.RADARR_INSTANCES;
    arrRetrieverRegistry.retrievers.clear();
    arrRetrieverRegistry.initialized = false;
  });

  it('decorates a series download with Sonarr link matching on title', async () => {
    // Mock Sonarr series query
    nock(SONARR_BASE)
      .get('/api/v3/series')
      .reply(200, [
        { id: 42, title: 'The Mandalorian', titleSlug: 'the-mandalorian' }
      ]);

    // Mock Radarr movie query (empty)
    nock(RADARR_BASE)
      .get('/api/v3/movie')
      .reply(200, []);

    const downloads = [
      {
        title: 'The.Mandalorian.S01E01.1080p',
        type: 'series',
        seriesName: 'The Mandalorian',
        arrSeriesId: null
      }
    ];

    await decorateDownloadsWithArrLinks(downloads, true);

    expect(downloads[0].arrLink).toBe(`${SONARR_BASE}/series/the-mandalorian`);
    expect(downloads[0].arrType).toBe('sonarr');
  });

  it('decorates a movie download with Radarr link matching on content ID', async () => {
    // Mock Sonarr series query (empty)
    nock(SONARR_BASE)
      .get('/api/v3/series')
      .reply(200, []);

    // Mock Radarr movie query with matching ID
    nock(RADARR_BASE)
      .get('/api/v3/movie')
      .reply(200, [
        { id: 99, title: 'Blade Runner 2049', titleSlug: 'blade-runner-2049' }
      ]);

    const downloads = [
      {
        title: 'Blade.Runner.2049.2017.1080p',
        type: 'movie',
        movieName: 'Blade Runner 2049',
        arrInstanceUrl: RADARR_BASE,
        arrContentId: 99
      }
    ];

    await decorateDownloadsWithArrLinks(downloads, true);

    expect(downloads[0].arrLink).toBe(`${RADARR_BASE}/movie/blade-runner-2049`);
    expect(downloads[0].arrType).toBe('radarr');
  });

  it('skips decoration entirely when isAdmin is false', async () => {
    const downloads = [
      {
        title: 'The.Mandalorian.S01E01.1080p',
        type: 'series',
        seriesName: 'The Mandalorian'
      }
    ];

    // No nocks are set up, so any HTTP calls would throw or error
    await decorateDownloadsWithArrLinks(downloads, false);

    expect(downloads[0].arrLink).toBeUndefined();
    expect(downloads[0].arrType).toBeUndefined();
  });

  it('handles empty downloads array gracefully', async () => {
    // No mock setups needed, should complete without throwing
    await expect(decorateDownloadsWithArrLinks([], true)).resolves.not.toThrow();
  });

  it('handles external API fetch failures gracefully without failing the decoration pipeline', async () => {
    // Mock Sonarr series query throwing connection error
    nock(SONARR_BASE)
      .get('/api/v3/series')
      .replyWithError('connection refused');

    // Mock Radarr movie query throwing timeout error
    nock(RADARR_BASE)
      .get('/api/v3/movie')
      .replyWithError('timeout');

    const downloads = [
      {
        title: 'The.Mandalorian.S01E01.1080p',
        type: 'series',
        seriesName: 'The Mandalorian'
      }
    ];

    await expect(decorateDownloadsWithArrLinks(downloads, true)).resolves.not.toThrow();

    // No links decorated since the fetch failed
    expect(downloads[0].arrLink).toBeUndefined();
    expect(downloads[0].arrType).toBeUndefined();
  });
});