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

describe('PollingRadarrRetriever', () => {
  const config = {
    id: 'radarr-test',
    name: 'Test Radarr',
    url: 'http://radarr-mock.test',
    apiKey: 'mock-api-key'
  };

  let retriever;

  beforeEach(() => {
    retriever = new PollingRadarrRetriever(config);
    nock.disableNetConnect();
  });

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

  it('should return correct type and instance ID', () => {
    expect(retriever.getRetrieverType()).toBe('radarr');
    expect(retriever.getInstanceId()).toBe('radarr-test');
  });

  describe('getTags', () => {
    it('should fetch tags successfully', async () => {
      const mockTags = [{ id: 1, label: 'tag1' }, { id: 2, label: 'tag2' }];
      nock(config.url)
        .get('/api/v3/tag')
        .matchHeader('X-Api-Key', config.apiKey)
        .reply(200, mockTags);

      const tags = await retriever.getTags();
      expect(tags).toEqual(mockTags);
    });

    it('should return an empty array on error and log it', async () => {
      nock(config.url)
        .get('/api/v3/tag')
        .reply(500, 'Internal Server Error');

      const tags = await retriever.getTags();
      expect(tags).toEqual([]);
    });
  });

  describe('getQueue', () => {
    it('should fetch queue in a single page if records count is less than 1000', async () => {
      const mockQueueResponse = {
        page: 1,
        pageSize: 1000,
        totalRecords: 2,
        records: [
          { id: 1, title: 'Movie 1' },
          { id: 2, title: 'Movie 2' }
        ]
      };

      nock(config.url)
        .get('/api/v3/queue')
        .query({ includeMovie: 'true', page: 1, pageSize: 1000 })
        .matchHeader('X-Api-Key', config.apiKey)
        .reply(200, mockQueueResponse);

      const queue = await retriever.getQueue();
      expect(queue.records).toHaveLength(2);
      expect(queue.records).toEqual(mockQueueResponse.records);
    });

    it('should paginate queue if the page size is exactly 1000', async () => {
      const page1Records = Array.from({ length: 1000 }, (_, i) => ({ id: i, title: `Movie ${i}` }));
      const page2Records = [{ id: 1000, title: 'Movie 1000' }];

      nock(config.url)
        .get('/api/v3/queue')
        .query({ includeMovie: 'true', page: 1, pageSize: 1000 })
        .reply(200, {
          page: 1,
          pageSize: 1000,
          totalRecords: 1001,
          records: page1Records
        });

      nock(config.url)
        .get('/api/v3/queue')
        .query({ includeMovie: 'true', page: 2, pageSize: 1000 })
        .reply(200, {
          page: 2,
          pageSize: 1000,
          totalRecords: 1001,
          records: page2Records
        });

      const queue = await retriever.getQueue();
      expect(queue.records).toHaveLength(1001);
      expect(queue.records[1000]).toEqual(page2Records[0]);
    });

    it('should throw an error if the request fails', async () => {
      nock(config.url)
        .get('/api/v3/queue')
        .query(true)
        .reply(500, 'Server Error');

      await expect(retriever.getQueue()).rejects.toThrow();
    });
  });

  describe('getHistory', () => {
    it('should fetch history with default parameters', async () => {
      const mockHistoryResponse = {
        page: 1,
        pageSize: 100,
        totalRecords: 2,
        records: [
          { id: 1, eventType: 'grabbed' },
          { id: 2, eventType: 'downloadFolderImported' }
        ]
      };

      nock(config.url)
        .get('/api/v3/history')
        .query({ page: 1, pageSize: 100, includeMovie: 'true' })
        .matchHeader('X-Api-Key', config.apiKey)
        .reply(200, mockHistoryResponse);

      const history = await retriever.getHistory();
      expect(history.records).toHaveLength(2);
      expect(history.records).toEqual(mockHistoryResponse.records);
    });

    it('should apply sorting and startDate filters from options', async () => {
      const mockHistoryResponse = { page: 1, pageSize: 10, totalRecords: 0, records: [] };

      nock(config.url)
        .get('/api/v3/history')
        .query({
          page: 1,
          pageSize: 10,
          includeMovie: 'false',
          sortKey: 'date',
          sortDir: 'descending',
          startDate: '2026-05-22T00:00:00Z'
        })
        .reply(200, mockHistoryResponse);

      const history = await retriever.getHistory({
        pageSize: 10,
        includeMovie: false,
        sortKey: 'date',
        sortDir: 'descending',
        startDate: '2026-05-22T00:00:00Z'
      });
      expect(history.records).toEqual([]);
    });

    it('should paginate history when more pages are available up to maxPages', async () => {
      const page1Records = Array.from({ length: 50 }, (_, i) => ({ id: i }));
      const page2Records = Array.from({ length: 50 }, (_, i) => ({ id: 50 + i }));

      nock(config.url)
        .get('/api/v3/history')
        .query({ page: 1, pageSize: 50, includeMovie: 'true' })
        .reply(200, {
          page: 1,
          pageSize: 50,
          records: page1Records
        });

      nock(config.url)
        .get('/api/v3/history')
        .query({ page: 2, pageSize: 50, includeMovie: 'true' })
        .reply(200, {
          page: 2,
          pageSize: 50,
          records: page2Records
        });

      const history = await retriever.getHistory({ pageSize: 50, maxPages: 2 });
      expect(history.records).toHaveLength(100);
    });

    it('should throw an error on API failure', async () => {
      nock(config.url)
        .get('/api/v3/history')
        .query(true)
        .reply(500, 'Server Error');

      await expect(retriever.getHistory()).rejects.toThrow();
    });
  });
});