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// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========= Copyright 2025-2026 @ Eigent.ai All Rights Reserved. =========

/**
 * Tests for window event setup and lifecycle management in createWindow function
 * Covers dev tools shortcuts, external link handling, before close handling,
 * auto-update integration, webview manager, and file reader initialization
 */

import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
import { setupMockEnvironment } from '../../../mocks/environmentMocks';

describe('createWindow - Window Event Setup and Lifecycle', () => {
  let mockEnv: ReturnType<typeof setupMockEnvironment>;
  let mockWebContents: any;
  let mockWindow: any;
  let mockFileReader: any;
  let mockWebViewManager: any;
  let mockUpdate: any;
  let mockMenu: any;

  beforeEach(() => {
    mockEnv = setupMockEnvironment();

    // Mock webContents
    mockWebContents = {
      on: vi.fn(),
      once: vi.fn(),
      executeJavaScript: vi.fn(),
      send: vi.fn(),
      loadURL: vi.fn(),
      loadFile: vi.fn(),
      openDevTools: vi.fn(),
      toggleDevTools: vi.fn(),
    };

    // Mock window
    mockWindow = {
      webContents: mockWebContents,
      reload: vi.fn(),
    };

    // Mock FileReader class
    mockFileReader = vi.fn();

    // Mock WebViewManager class
    mockWebViewManager = vi.fn().mockImplementation(() => ({
      createWebview: vi.fn(),
    }));

    // Mock update function
    mockUpdate = vi.fn();

    // Mock Menu
    mockMenu = {
      setApplicationMenu: vi.fn(),
    };

    // Reset all mocks
    vi.clearAllMocks();
  });

  afterEach(() => {
    mockEnv.reset();
  });

  describe('FileReader and WebViewManager Initialization', () => {
    it.skip('should create 8 webviews with correct IDs', () => {
      const _webViewManager = new mockWebViewManager(mockWindow);
      const instance = mockWebViewManager.mock.instances[0];

      // Simulate the loop that creates webviews
      for (let i = 1; i <= 8; i++) {
        instance.createWebview(i === 1 ? undefined : i.toString());
      }

      expect(instance.createWebview).toHaveBeenCalledTimes(8);
      expect(instance.createWebview).toHaveBeenNthCalledWith(1, undefined);
      expect(instance.createWebview).toHaveBeenNthCalledWith(2, '2');
      expect(instance.createWebview).toHaveBeenNthCalledWith(3, '3');
      expect(instance.createWebview).toHaveBeenNthCalledWith(4, '4');
      expect(instance.createWebview).toHaveBeenNthCalledWith(5, '5');
      expect(instance.createWebview).toHaveBeenNthCalledWith(6, '6');
      expect(instance.createWebview).toHaveBeenNthCalledWith(7, '7');
      expect(instance.createWebview).toHaveBeenNthCalledWith(8, '8');
    });
  });

  describe('Window Event Listeners Setup', () => {
    it('should disable application menu', () => {
      // Simulate setupWindowEventListeners
      mockMenu.setApplicationMenu(null);

      expect(mockMenu.setApplicationMenu).toHaveBeenCalledWith(null);
    });

    it('should set up application menu only once', () => {
      // Simulate multiple calls to setupWindowEventListeners
      mockMenu.setApplicationMenu(null);
      mockMenu.setApplicationMenu(null);

      expect(mockMenu.setApplicationMenu).toHaveBeenCalledTimes(2);
      expect(mockMenu.setApplicationMenu).toHaveBeenCalledWith(null);
    });
  });

  describe('DevTools Shortcuts Setup', () => {
    it('should set up before-input-event listener for dev tools shortcuts', () => {
      // Simulate setupDevToolsShortcuts
      mockWebContents.on('before-input-event', expect.any(Function));

      expect(mockWebContents.on).toHaveBeenCalledWith(
        'before-input-event',
        expect.any(Function)
      );
    });

    it('should handle F12 key to toggle dev tools', () => {
      let beforeInputCallback: any;

      mockWebContents.on.mockImplementation((event: string, callback: any) => {
        if (event === 'before-input-event') {
          beforeInputCallback = callback;
        }
      });

      // Simulate setupDevToolsShortcuts
      mockWebContents.on('before-input-event', (event: any, input: any) => {
        if (input.key === 'F12' && input.type === 'keyDown') {
          mockWebContents.toggleDevTools();
        }
      });

      // Trigger F12 key
      if (beforeInputCallback) {
        const mockEvent = { preventDefault: vi.fn() };
        const mockInput = { key: 'F12', type: 'keyDown' };
        beforeInputCallback(mockEvent, mockInput);
      }

      expect(mockWebContents.toggleDevTools).toHaveBeenCalled();
    });

    it('should handle Ctrl+Shift+I to toggle dev tools on Windows/Linux', () => {
      let beforeInputCallback: any;

      mockWebContents.on.mockImplementation((event: string, callback: any) => {
        if (event === 'before-input-event') {
          beforeInputCallback = callback;
        }
      });

      // Simulate setupDevToolsShortcuts
      mockWebContents.on('before-input-event', (event: any, input: any) => {
        if (
          input.control &&
          input.shift &&
          input.key.toLowerCase() === 'i' &&
          input.type === 'keyDown'
        ) {
          mockWebContents.toggleDevTools();
        }
      });

      // Trigger Ctrl+Shift+I
      if (beforeInputCallback) {
        const mockEvent = { preventDefault: vi.fn() };
        const mockInput = {
          control: true,
          shift: true,
          key: 'I',
          type: 'keyDown',
        };
        beforeInputCallback(mockEvent, mockInput);
      }

      expect(mockWebContents.toggleDevTools).toHaveBeenCalled();
    });

    it('should handle Cmd+Shift+I to toggle dev tools on Mac', () => {
      let beforeInputCallback: any;

      mockWebContents.on.mockImplementation((event: string, callback: any) => {
        if (event === 'before-input-event') {
          beforeInputCallback = callback;
        }
      });

      // Simulate setupDevToolsShortcuts
      mockWebContents.on('before-input-event', (event: any, input: any) => {
        if (
          input.meta &&
          input.shift &&
          input.key.toLowerCase() === 'i' &&
          input.type === 'keyDown'
        ) {
          mockWebContents.toggleDevTools();
        }
      });

      // Trigger Cmd+Shift+I
      if (beforeInputCallback) {
        const mockEvent = { preventDefault: vi.fn() };
        const mockInput = {
          meta: true,
          shift: true,
          key: 'I',
          type: 'keyDown',
        };
        beforeInputCallback(mockEvent, mockInput);
      }

      expect(mockWebContents.toggleDevTools).toHaveBeenCalled();
    });

    it('should not trigger dev tools on key up events', () => {
      let beforeInputCallback: any;

      mockWebContents.on.mockImplementation((event: string, callback: any) => {
        if (event === 'before-input-event') {
          beforeInputCallback = callback;
        }
      });

      // Simulate setupDevToolsShortcuts
      mockWebContents.on('before-input-event', (event: any, input: any) => {
        if (input.key === 'F12' && input.type === 'keyDown') {
          mockWebContents.toggleDevTools();
        }
      });

      // Trigger F12 key up (should not toggle)
      if (beforeInputCallback) {
        const mockEvent = { preventDefault: vi.fn() };
        const mockInput = { key: 'F12', type: 'keyUp' };
        beforeInputCallback(mockEvent, mockInput);
      }

      expect(mockWebContents.toggleDevTools).not.toHaveBeenCalled();
    });

    it('should not trigger dev tools on wrong key combinations', () => {
      let beforeInputCallback: any;

      mockWebContents.on.mockImplementation((event: string, callback: any) => {
        if (event === 'before-input-event') {
          beforeInputCallback = callback;
        }
      });

      // Simulate setupDevToolsShortcuts
      mockWebContents.on('before-input-event', (event: any, input: any) => {
        if (
          input.control &&
          input.shift &&
          input.key.toLowerCase() === 'i' &&
          input.type === 'keyDown'
        ) {
          mockWebContents.toggleDevTools();
        }
      });

      // Trigger wrong combination (Ctrl+I without Shift)
      if (beforeInputCallback) {
        const mockEvent = { preventDefault: vi.fn() };
        const mockInput = {
          control: true,
          shift: false,
          key: 'I',
          type: 'keyDown',
        };
        beforeInputCallback(mockEvent, mockInput);
      }

      expect(mockWebContents.toggleDevTools).not.toHaveBeenCalled();
    });
  });

  describe('Auto-Update Integration', () => {
    it('should call update function with window reference', () => {
      // Simulate auto-update setup
      mockUpdate(mockWindow);

      expect(mockUpdate).toHaveBeenCalledWith(mockWindow);
    });

    it('should call update function only once', () => {
      // Simulate auto-update setup
      mockUpdate(mockWindow);

      expect(mockUpdate).toHaveBeenCalledTimes(1);
    });
  });

  describe('Event Handler Organization', () => {
    it('should set up event handlers in correct order', () => {
      const eventSetupOrder: string[] = [];

      // Mock all the setup functions to track order
      const setupWindowEventListeners = () => {
        eventSetupOrder.push('windowEventListeners');
        mockMenu.setApplicationMenu(null);
      };

      const setupDevToolsShortcuts = () => {
        eventSetupOrder.push('devToolsShortcuts');
        mockWebContents.on('before-input-event', vi.fn());
      };

      const setupExternalLinkHandling = () => {
        eventSetupOrder.push('externalLinkHandling');
      };

      const handleBeforeClose = () => {
        eventSetupOrder.push('beforeClose');
      };

      // Simulate the order in createWindow
      setupWindowEventListeners();
      setupDevToolsShortcuts();
      setupExternalLinkHandling();
      handleBeforeClose();

      expect(eventSetupOrder).toEqual([
        'windowEventListeners',
        'devToolsShortcuts',
        'externalLinkHandling',
        'beforeClose',
      ]);
    });
  });

  describe('Window State Management', () => {
    it('should handle window ready state correctly', async () => {
      let didFinishLoadCallback: (() => void) | undefined;

      // Mock the did-finish-load event listener
      mockWebContents.once.mockImplementation(
        (event: string, callback: () => void) => {
          if (event === 'did-finish-load') {
            didFinishLoadCallback = callback;
          }
        }
      );

      // Simulate waiting for window ready
      const windowReadyPromise = new Promise<void>((resolve) => {
        mockWebContents.once('did-finish-load', () => {
          resolve();
        });
      });

      // Trigger the event
      if (didFinishLoadCallback) {
        didFinishLoadCallback();
      }

      // Should resolve without throwing
      await expect(windowReadyPromise).resolves.toBeUndefined();
    });

    it('should log appropriate messages during window setup', () => {
      // In a real test, you would verify that appropriate log messages are called
      // This ensures the window setup process is properly logged
      const mockLog = {
        info: vi.fn(),
        error: vi.fn(),
      };

      // Simulate logging calls that would happen during window setup
      mockLog.info(
        'Window content loaded, starting dependency check immediately...'
      );
      mockLog.info('.eigent directory structure ensured');

      expect(mockLog.info).toHaveBeenCalledWith(
        'Window content loaded, starting dependency check immediately...'
      );
      expect(mockLog.info).toHaveBeenCalledWith(
        '.eigent directory structure ensured'
      );
    });
  });

  describe('Integration Points', () => {
    it('should properly coordinate between file reader and webview manager', () => {
      const _fileReader = new mockFileReader(mockWindow);
      const _webViewManager = new mockWebViewManager(mockWindow);

      // Both should be initialized with the same window
      expect(mockFileReader).toHaveBeenCalledWith(mockWindow);
      expect(mockWebViewManager).toHaveBeenCalledWith(mockWindow);
    });

    it('should handle window initialization errors gracefully', () => {
      // Mock FileReader to throw during initialization
      mockFileReader.mockImplementation(() => {
        throw new Error('FileReader initialization failed');
      });

      // Should handle gracefully in real implementation
      expect(() => {
        try {
          new mockFileReader(mockWindow);
        } catch (error) {
          // Log error but don't stop execution
          console.error('FileReader initialization error:', error);
        }
      }).not.toThrow();
    });
  });

  describe('Memory Management', () => {
    it('should properly clean up event listeners when window is destroyed', () => {
      // In a real scenario, you would test that event listeners are removed
      // when the window is closed to prevent memory leaks

      const mockRemoveListener = vi.fn();
      mockWebContents.removeListener = mockRemoveListener;

      // Simulate cleanup
      const cleanup = () => {
        mockWebContents.removeListener('before-input-event', vi.fn());
        mockWebContents.removeListener('dom-ready', vi.fn());
      };

      cleanup();

      expect(mockRemoveListener).toHaveBeenCalledTimes(2);
    });
  });
});