/**
 * Unit tests for browserCheck module
 */

import {
  isBrowserSupported,
  getBrowserInfo,
  getRecommendedBrowsers,
  getUnsupportedMessage,
} from '../lib/browserCheck';

describe('browserCheck', () => {
  // Store original navigator
  const originalNavigator = global.navigator;

  beforeEach(() => {
    // Reset navigator before each test
    Object.defineProperty(global, 'navigator', {
      writable: true,
      configurable: true,
      value: {
        userAgent: '',
        platform: '',
      },
    });
  });

  afterEach(() => {
    // Restore original navigator
    Object.defineProperty(global, 'navigator', {
      writable: true,
      configurable: true,
      value: originalNavigator,
    });
  });

  describe('isBrowserSupported', () => {
    it('should return true for Chrome 70+', () => {
      Object.defineProperty(global.navigator, 'userAgent', {
        writable: true,
        value:
          'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.0.0 Safari/537.36',
      });
      Object.defineProperty(global.navigator, 'platform', {
        writable: true,
        value: 'Win32',
      });
      Object.defineProperty(global.navigator, 'bluetooth', {
        writable: true,
        value: {},
      });

      expect(isBrowserSupported()).toBe(true);
    });

    it('should return false for Chrome below version 70', () => {
      Object.defineProperty(global.navigator, 'userAgent', {
        writable: true,
        value:
          'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.0.0 Safari/537.36',
      });
      Object.defineProperty(global.navigator, 'platform', {
        writable: true,
        value: 'Win32',
      });

      expect(isBrowserSupported()).toBe(false);
    });

    it('should return true for Edge 79+', () => {
      Object.defineProperty(global.navigator, 'userAgent', {
        writable: true,
        value:
          'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.0.0 Safari/537.36 Edg/100.0.0.0',
      });
      Object.defineProperty(global.navigator, 'platform', {
        writable: true,
        value: 'Win32',
      });
      Object.defineProperty(global.navigator, 'bluetooth', {
        writable: true,
        value: {},
      });

      expect(isBrowserSupported()).toBe(true);
    });

    it('should return false for Edge below version 79', () => {
      Object.defineProperty(global.navigator, 'userAgent', {
        writable: true,
        value:
          'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.0.0 Safari/537.36 Edg/78.0.0.0',
      });
      Object.defineProperty(global.navigator, 'platform', {
        writable: true,
        value: 'Win32',
      });

      expect(isBrowserSupported()).toBe(false);
    });

    it('should return true for Opera 57+', () => {
      Object.defineProperty(global.navigator, 'userAgent', {
        writable: true,
        value:
          'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.0.0 Safari/537.36 OPR/86.0.0.0',
      });
      Object.defineProperty(global.navigator, 'platform', {
        writable: true,
        value: 'Win32',
      });
      Object.defineProperty(global.navigator, 'bluetooth', {
        writable: true,
        value: {},
      });

      expect(isBrowserSupported()).toBe(true);
    });

    it('should return false for Opera below version 57', () => {
      Object.defineProperty(global.navigator, 'userAgent', {
        writable: true,
        value:
          'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.0.0 Safari/537.36 OPR/56.0.0.0',
      });
      Object.defineProperty(global.navigator, 'platform', {
        writable: true,
        value: 'Win32',
      });

      expect(isBrowserSupported()).toBe(false);
    });

    it('should return false for Safari', () => {
      Object.defineProperty(global.navigator, 'userAgent', {
        writable: true,
        value:
          'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.0 Safari/605.1.15',
      });
      Object.defineProperty(global.navigator, 'platform', {
        writable: true,
        value: 'MacIntel',
      });

      expect(isBrowserSupported()).toBe(false);
    });

    it('should return false for Firefox', () => {
      Object.defineProperty(global.navigator, 'userAgent', {
        writable: true,
        value:
          'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0',
      });
      Object.defineProperty(global.navigator, 'platform', {
        writable: true,
        value: 'Win32',
      });

      expect(isBrowserSupported()).toBe(false);
    });

    it('should return false for iOS browsers', () => {
      Object.defineProperty(global.navigator, 'userAgent', {
        writable: true,
        value:
          'Mozilla/5.0 (iPhone; CPU iPhone OS 16_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.0 Mobile/15E148 Safari/604.1',
      });
      Object.defineProperty(global.navigator, 'platform', {
        writable: true,
        value: 'iPhone',
      });

      expect(isBrowserSupported()).toBe(false);
    });
  });

  describe('getBrowserInfo', () => {
    it('should return correct info for Chrome on Windows', () => {
      Object.defineProperty(global.navigator, 'userAgent', {
        writable: true,
        value:
          'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.0.0 Safari/537.36',
      });
      Object.defineProperty(global.navigator, 'platform', {
        writable: true,
        value: 'Win32',
      });
      Object.defineProperty(global.navigator, 'bluetooth', {
        writable: true,
        value: {},
      });

      const info = getBrowserInfo();
      expect(info.name).toBe('Chrome');
      expect(info.version).toBe('100');
      expect(info.platform).toBe('Windows');
      expect(info.hasWebBluetooth).toBe(true);
      expect(info.isSupported).toBe(true);
    });

    it('should return correct info for Edge on macOS', () => {
      Object.defineProperty(global.navigator, 'userAgent', {
        writable: true,
        value:
          'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.0.0 Safari/537.36 Edg/100.0.0.0',
      });
      Object.defineProperty(global.navigator, 'platform', {
        writable: true,
        value: 'MacIntel',
      });
      Object.defineProperty(global.navigator, 'bluetooth', {
        writable: true,
        value: {},
      });

      const info = getBrowserInfo();
      expect(info.name).toBe('Edge');
      expect(info.version).toBe('100');
      expect(info.platform).toBe('macOS');
      expect(info.hasWebBluetooth).toBe(true);
      expect(info.isSupported).toBe(true);
    });

    it('should detect when Web Bluetooth is not available', () => {
      Object.defineProperty(global.navigator, 'userAgent', {
        writable: true,
        value:
          'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.0.0 Safari/537.36',
      });
      Object.defineProperty(global.navigator, 'platform', {
        writable: true,
        value: 'Win32',
      });
      // Explicitly delete bluetooth property
      delete (global.navigator as any).bluetooth;

      const info = getBrowserInfo();
      expect(info.hasWebBluetooth).toBe(false);
    });

    it('should handle Safari correctly', () => {
      Object.defineProperty(global.navigator, 'userAgent', {
        writable: true,
        value:
          'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.0 Safari/605.1.15',
      });
      Object.defineProperty(global.navigator, 'platform', {
        writable: true,
        value: 'MacIntel',
      });

      const info = getBrowserInfo();
      expect(info.name).toBe('Safari');
      expect(info.isSupported).toBe(false);
    });
  });

  describe('getRecommendedBrowsers', () => {
    it('should return an array of recommended browsers', () => {
      const browsers = getRecommendedBrowsers();
      expect(Array.isArray(browsers)).toBe(true);
      expect(browsers.length).toBeGreaterThan(0);
    });

    it('should include Chrome, Edge, and Opera', () => {
      const browsers = getRecommendedBrowsers();
      const browserNames = browsers.map((b) => b.name);
      expect(browserNames).toContain('Google Chrome');
      expect(browserNames).toContain('Microsoft Edge');
      expect(browserNames).toContain('Opera');
    });

    it('should have correct minimum versions', () => {
      const browsers = getRecommendedBrowsers();
      const chrome = browsers.find((b) => b.name === 'Google Chrome');
      const edge = browsers.find((b) => b.name === 'Microsoft Edge');
      const opera = browsers.find((b) => b.name === 'Opera');

      expect(chrome?.minVersion).toBe('70');
      expect(edge?.minVersion).toBe('79');
      expect(opera?.minVersion).toBe('57');
    });

    it('should include download URLs', () => {
      const browsers = getRecommendedBrowsers();
      browsers.forEach((browser) => {
        expect(browser.downloadUrl).toBeTruthy();
        expect(browser.downloadUrl.startsWith('https://')).toBe(true);
      });
    });

    it('should include platform information', () => {
      const browsers = getRecommendedBrowsers();
      browsers.forEach((browser) => {
        expect(Array.isArray(browser.platforms)).toBe(true);
        expect(browser.platforms.length).toBeGreaterThan(0);
      });
    });
  });

  describe('getUnsupportedMessage', () => {
    it('should return iOS-specific message for iOS platform', () => {
      const browserInfo = {
        name: 'Safari',
        version: '16',
        isSupported: false,
        hasWebBluetooth: false,
        platform: 'iOS',
      };
      const message = getUnsupportedMessage(browserInfo);
      expect(message).toContain('iOS');
      expect(message).toContain('system limitations');
    });

    it('should return Safari-specific message', () => {
      const browserInfo = {
        name: 'Safari',
        version: '16',
        isSupported: false,
        hasWebBluetooth: false,
        platform: 'macOS',
      };
      const message = getUnsupportedMessage(browserInfo);
      expect(message).toContain('Safari');
      expect(message).toContain('does not support');
    });

    it('should return Firefox-specific message', () => {
      const browserInfo = {
        name: 'Firefox',
        version: '115',
        isSupported: false,
        hasWebBluetooth: false,
        platform: 'Windows',
      };
      const message = getUnsupportedMessage(browserInfo);
      expect(message).toContain('Firefox');
      expect(message).toContain('privacy concerns');
    });

    it('should return generic message for browsers without Web Bluetooth', () => {
      const browserInfo = {
        name: 'Chrome',
        version: '50',
        isSupported: false,
        hasWebBluetooth: false,
        platform: 'Windows',
      };
      const message = getUnsupportedMessage(browserInfo);
      expect(message).toContain('does not support');
      expect(message).toContain('Web Bluetooth API');
    });

    it('should return version requirement message for supported browsers with old versions', () => {
      const browserInfo = {
        name: 'Chrome',
        version: '69',
        isSupported: false,
        hasWebBluetooth: true,
        platform: 'Windows',
      };
      const message = getUnsupportedMessage(browserInfo);
      expect(message).toContain('Chrome 70+');
    });
  });
});