// Copyright (c) 2026 Gordon Bolton. MIT License.
import SABnzbdClient from '../../../server/clients/SABnzbdClient.js';
import axios from 'axios';
import { vi } from 'vitest';

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

describe('SABnzbdClient', () => {
  let client;
  let mockConfig;

  beforeEach(() => {
    mockConfig = {
      id: 'test-sab',
      name: 'Test SABnzbd',
      url: 'http://localhost:8080',
      apiKey: 'test-api-key'
    };
    
    client = new SABnzbdClient(mockConfig);
    
    // Clear all mocks
    vi.clearAllMocks();
  });

  describe('Constructor', () => {
    it('should initialize with correct properties', () => {
      expect(client.getClientType()).toBe('sabnzbd');
      expect(client.getInstanceId()).toBe('test-sab');
      expect(client.name).toBe('Test SABnzbd');
      expect(client.url).toBe('http://localhost:8080');
      expect(client.apiKey).toBe('test-api-key');
    });
  });

  describe('Connection Test', () => {
    it('should test connection successfully', async () => {
      const mockResponse = {
        data: { version: '3.6.1' }
      };
      
      client.makeRequest = vi.fn().mockResolvedValue(mockResponse);
      
      const result = await client.testConnection();
      
      expect(result).toBe(true);
      expect(client.makeRequest).toHaveBeenCalledWith({ mode: 'version' });
    });

    it('should handle connection test failure', async () => {
      client.makeRequest = vi.fn().mockRejectedValue(new Error('Connection failed'));
      
      const result = await client.testConnection();
      
      expect(result).toBe(false);
    });
  });

  describe('API Requests', () => {
    it('should make API request with correct parameters', async () => {
      const mockResponse = { data: { result: 'success' } };
      
      axios.get.mockResolvedValue(mockResponse);
      
      const result = await client.makeRequest({ mode: 'queue', limit: 10 });
      
      expect(axios.get).toHaveBeenCalledWith('http://localhost:8080/api', {
        params: {
          output: 'json',
          apikey: 'test-api-key',
          mode: 'queue',
          limit: 10
        }
      });
      
      expect(result).toEqual(mockResponse);
    });

    it('should handle API request errors', async () => {
      const error = new Error('API Error');
      axios.get.mockRejectedValue(error);
      
      await expect(client.makeRequest({ mode: 'queue' })).rejects.toThrow('API Error');
    });
  });

  describe('Download Normalization', () => {
    it('should normalize queue download correctly', () => {
      const slot = {
        nzo_id: 'test123',
        filename: 'Test Movie.mkv',
        status: 'Downloading',
        progress: 75.5,
        mb: 1000,
        mbleft: 245,
        kbpersec: 1024,
        timeleft: '0:15:30',
        cat: 'movies',
        labels: 'movie,hd',
        added: 1640995200
      };

      const normalized = client.normalizeDownload(slot, 'queue');

      expect(normalized).toEqual({
        id: 'test123',
        title: 'Test Movie.mkv',
        type: 'usenet',
        client: 'sabnzbd',
        instanceId: 'test-sab',
        instanceName: 'Test SABnzbd',
        status: 'Downloading',
        progress: 76,
        size: 1000 * 1024 * 1024,
        downloaded: 755 * 1024 * 1024,
        speed: 1024 * 1024,
        eta: 930, // 15 minutes 30 seconds
        category: 'movies',
        tags: ['movie', 'hd'],
        savePath: undefined,
        addedOn: '2022-01-01T00:00:00.000Z',
        raw: { ...slot, source: 'queue' }
      });
    });

    it('should normalize history download correctly', () => {
      const slot = {
        nzo_id: 'test456',
        filename: 'Test Series S01E01.mkv',
        status: 'Completed',
        mb: 500,
        cat: 'tv',
        added: 1640995200
      };

      const normalized = client.normalizeDownload(slot, 'history');

      expect(normalized.status).toBe('Completed');
      expect(normalized.progress).toBe(100);
      expect(normalized.downloaded).toBe(500 * 1024 * 1024);
      expect(normalized.speed).toBe(0);
      expect(normalized.eta).toBeNull();
      expect(normalized.raw.source).toBe('history');
    });

    it('should parse time strings correctly', () => {
      const testCases = [
        { input: '0:05:30', expected: 330 },     // 5m 30s
        { input: '15:30', expected: 930 },       // 15m 30s
        { input: '330', expected: 330 },         // 330 seconds
        { input: 'unknown', expected: null },    // unknown
        { input: '0:00', expected: null }        // zero
      ];

      testCases.forEach(({ input, expected }) => {
        const slot = {
          nzo_id: 'test',
          filename: 'Test',
          status: 'Downloading',
          progress: 50,
          mb: 1000,
          mbleft: 500,
          timeleft: input
        };

        const normalized = client.normalizeDownload(slot, 'queue');
        expect(normalized.eta).toBe(expected);
      });
    });

    it('should extract Sonarr/Radarr info from filename', () => {
      const testCases = [
        { filename: 'Show Name - S01E02 - Episode Title', expectedType: 'series' },
        { filename: 'Movie Title (2023) 1080p', expectedType: 'movie' },
        { filename: 'Random File Name.mkv', expectedType: undefined }
      ];

      testCases.forEach(({ filename, expectedType }) => {
        const slot = {
          nzo_id: 'test',
          filename: filename,
          status: 'Downloading',
          progress: 50,
          mb: 1000,
          mbleft: 500
        };

        const normalized = client.normalizeDownload(slot, 'queue');
        expect(normalized.arrType).toBe(expectedType);
      });
    });

    it('should handle size parsing from strings', () => {
      const slot = {
        nzo_id: 'test',
        filename: 'Test',
        status: 'Downloading',
        progress: 50,
        size: '1.5 GB',
        sizeleft: '750 MB'
      };

      const normalized = client.normalizeDownload(slot, 'queue');
      
      expect(normalized.size).toBe(1.5 * 1024 * 1024 * 1024);
      expect(normalized.downloaded).toBe(0.75 * 1024 * 1024 * 1024);
      expect(normalized.progress).toBe(50);
    });
  });

  describe('Unit Multipliers', () => {
    it('should return correct multipliers for different units', () => {
      expect(client.getUnitMultiplier('b')).toBe(1);
      expect(client.getUnitMultiplier('KB')).toBe(1024);
      expect(client.getUnitMultiplier('mb')).toBe(1024 * 1024);
      expect(client.getUnitMultiplier('GB')).toBe(1024 * 1024 * 1024);
      expect(client.getUnitMultiplier('tb')).toBe(1024 * 1024 * 1024 * 1024);
      expect(client.getUnitMultiplier('unknown')).toBe(1);
    });
  });

  describe('Active Downloads', () => {
    it('should fetch and normalize downloads from queue and history', async () => {
      const mockQueueResponse = {
        data: {
          queue: {
            slots: [
              { nzo_id: 'queue1', filename: 'Queue Item', status: 'Downloading' }
            ]
          }
        }
      };

      const mockHistoryResponse = {
        data: {
          history: {
            slots: [
              { nzo_id: 'hist1', filename: 'History Item', status: 'Completed' }
            ]
          }
        }
      };

      client.makeRequest = vi.fn()
        .mockResolvedValueOnce(mockQueueResponse)
        .mockResolvedValueOnce(mockHistoryResponse);

      const downloads = await client.getActiveDownloads();

      expect(client.makeRequest).toHaveBeenCalledWith({ mode: 'queue' });
      expect(client.makeRequest).toHaveBeenCalledWith({ mode: 'history', limit: 10 });
      expect(downloads).toHaveLength(2);
      expect(downloads[0].id).toBe('queue1');
      expect(downloads[1].id).toBe('hist1');
    });

    it('should handle API errors gracefully', async () => {
      client.makeRequest = vi.fn().mockRejectedValue(new Error('API Error'));

      const downloads = await client.getActiveDownloads();

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

  describe('Client Status', () => {
    it('should get client status', async () => {
      const mockResponse = {
        data: {
          queue: {
            status: 'Active',
            speed: 1048576,
            kbpersec: 1024,
            sizeleft: 500000000,
            mbleft: 500
          }
        }
      };

      client.makeRequest = vi.fn().mockResolvedValue(mockResponse);

      const status = await client.getClientStatus();

      expect(status).toEqual({
        status: 'Active',
        speed: 1048576,
        kbpersec: 1024,
        sizeleft: 500000000,
        mbleft: 500
      });
    });

    it('should handle status request errors', async () => {
      client.makeRequest = vi.fn().mockRejectedValue(new Error('Status error'));

      const status = await client.getClientStatus();

      expect(status).toBeNull();
    });
  });
});