import Routing from '../../services/modal.service';
import Services from '../../services/service';
import { addSubscription } from '../../utils/subscription.utils';
import { displayEmojis, generateCreateBtn, addressToEmoji, prepareAndSendPairingTx } from '../../utils/sp-address.utils';
import { getCorrectDOM } from '../../utils/html.utils';
// import { navigate, registerAllListeners } from '../../router'; // Unused imports
import { IframePairingComponent } from '../../components/iframe-pairing/iframe-pairing';

// Extend WindowEventMap to include custom events
declare global {
  interface WindowEventMap {
    'pairing-words-generated': CustomEvent;
    'pairing-status-update': CustomEvent;
    'pairing-success': CustomEvent;
    'pairing-error': CustomEvent;
  }
}

// Home page loading spinner functions
function showHomeLoadingSpinner(message: string = 'Loading...') {
  // Remove existing spinner if any
  hideHomeLoadingSpinner();

  // Create spinner overlay
  const overlay = document.createElement('div');
  overlay.id = 'home-loading-overlay';
  overlay.style.cssText = `
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9998;
    backdrop-filter: blur(3px);
  `;

  // Create spinner content
  const spinnerContent = document.createElement('div');
  spinnerContent.style.cssText = `
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.2);
    max-width: 350px;
    width: 90%;
  `;

  // Create spinner
  const spinner = document.createElement('div');
  spinner.style.cssText = `
    width: 40px;
    height: 40px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #3a506b;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px auto;
  `;

  // Create message
  const messageEl = document.createElement('div');
  messageEl.textContent = message;
  messageEl.style.cssText = `
    font-size: 14px;
    color: #3a506b;
    font-weight: 500;
  `;

  // Add CSS animation if not already present
  if (!document.getElementById('home-spinner-styles')) {
    const style = document.createElement('style');
    style.id = 'home-spinner-styles';
    style.textContent = `
      @keyframes spin {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
      }
    `;
    document.head.appendChild(style);
  }

  // Assemble spinner
  spinnerContent.appendChild(spinner);
  spinnerContent.appendChild(messageEl);
  overlay.appendChild(spinnerContent);

  // Add to document
  document.body.appendChild(overlay);
}

function hideHomeLoadingSpinner() {
  const overlay = document.getElementById('home-loading-overlay');
  if (overlay) {
    overlay.remove();
  }
}

export async function initHomePage(): Promise<void> {
  console.log('INIT-HOME');

  // Show loading spinner during home page initialization
  showHomeLoadingSpinner('Initializing pairing interface...');

  // Initialize iframe pairing, content menu, and communication only if in iframe
  if (window.parent !== window) {
    initIframePairing();
    initContentMenu();
    initIframeCommunication();
  }

  // Set up iframe pairing button listeners
  setupIframePairingButtons();

  // Set up main pairing interface
  setupMainPairing();

  const container = getCorrectDOM('login-4nk-component') as HTMLElement;
  container.querySelectorAll('.tab').forEach(tab => {
    addSubscription(tab, 'click', () => {
      container.querySelectorAll('.tab').forEach(t => t.classList.remove('active'));
      tab.classList.add('active');

      container
        .querySelectorAll('.tab-content')
        .forEach(content => content.classList.remove('active'));
      container
        .querySelector(`#${tab.getAttribute('data-tab') as string}`)
        ?.classList.add('active');
    });
  });

  try {
    console.log('🔧 Getting services instance...');
    const service = await Services.getInstance();
    console.log('🔧 Getting device address...');
    const spAddress = await service.getDeviceAddress();
    console.log('🔧 Generating create button...');
    generateCreateBtn();
    console.log('🔧 Displaying emojis...');
    displayEmojis(spAddress);

    // Hide loading spinner after initialization
    console.log('🔧 Hiding loading spinner...');
    hideHomeLoadingSpinner();
    console.log('✅ Home page initialization completed');
  } catch (error) {
    console.error('❌ Error initializing home page:', error);
    hideHomeLoadingSpinner();
    throw error;
  }
}

//// Modal
export async function openModal(myAddress: string, receiverAddress: string) {
  const router = await Routing.getInstance();
  router.openLoginModal(myAddress, receiverAddress);
}

// const service =  await Services.getInstance()
// service.setNotification()

function scanDevice() {
  const container = getCorrectDOM('login-4nk-component') as HTMLElement;
  const scannerImg = container.querySelector('#scanner') as HTMLElement;
  if (scannerImg) scannerImg.style.display = 'none';
  const scannerQrCode = container.querySelector('.qr-code-scanner') as HTMLElement;
  if (scannerQrCode) scannerQrCode.style.display = 'block';
  const scanButton = container?.querySelector('#scan-btn') as HTMLElement;
  if (scanButton) scanButton.style.display = 'none';
  // QR scanner functionality removed
}

async function populateMemberSelect() {
  const container = getCorrectDOM('login-4nk-component') as HTMLElement;
  const memberSelect = container.querySelector('#memberSelect') as HTMLSelectElement;

  if (!memberSelect) {
    console.error('Could not find memberSelect element');
    return;
  }

  const service = await Services.getInstance();
  const members = await service.getAllMembersSorted();

  for (const [processId, member] of Object.entries(members)) {
    // Use member variable
    console.log('Processing member:', member);
    const process = await service.getProcess(processId);
    let memberPublicName;

    if (process) {
      const publicMemberData = service.getPublicData(process);
      if (publicMemberData) {
        const extractedName = publicMemberData['memberPublicName'];
        if (extractedName !== undefined && extractedName !== null) {
          memberPublicName = extractedName;
        }
      }
    }

    if (!memberPublicName) {
      memberPublicName = 'Unnamed Member';
    }

    // Récupérer les emojis pour ce processId
    const emojis = await addressToEmoji(processId);

    const option = document.createElement('option');
    option.value = processId;
    option.textContent = `${memberPublicName} (${emojis})`;
    memberSelect.appendChild(option);
  }
}

(window as any).populateMemberSelect = populateMemberSelect;

(window as any).scanDevice = scanDevice;

// Initialize iframe pairing component
let iframePairing: IframePairingComponent | null = null;

export function initIframePairing() {
  if (!iframePairing) {
    iframePairing = new IframePairingComponent();
    iframePairing.createHiddenIframe();

    // Listen for pairing events
    window.addEventListener('pairing-words-generated', (event: Event) => {
      const customEvent = event as CustomEvent;
      console.log('✅ 4 words generated via iframe:', customEvent.detail.words);
      // Update the UI with the generated words
      const creatorWordsElement = document.querySelector('#creator-words');
      if (creatorWordsElement) {
        creatorWordsElement.textContent = customEvent.detail.words;
        creatorWordsElement.className = 'words-content active';
      }

      // Send message to parent
      if (window.parent !== window) {
        window.parent.postMessage(
          {
            type: 'PAIRING_4WORDS_WORDS_GENERATED',
            data: { words: customEvent.detail.words },
          },
          '*'
        );
      }
    });

    window.addEventListener('pairing-status-update', (event: Event) => {
      const customEvent = event as CustomEvent;
      console.log('📊 Pairing status update:', customEvent.detail.status);
      // Update status indicators
      const statusElement = document.querySelector(`#${customEvent.detail.type}-status span`);
      if (statusElement) {
        statusElement.textContent = customEvent.detail.status;
      }

      // Send message to parent
      if (window.parent !== window) {
        window.parent.postMessage(
          {
            type: 'PAIRING_4WORDS_STATUS_UPDATE',
            data: { status: customEvent.detail.status, type: customEvent.detail.type },
          },
          '*'
        );
      }
    });

    window.addEventListener('pairing-success', (event: Event) => {
      const customEvent = event as CustomEvent;
      console.log('✅ Pairing successful:', customEvent.detail.message);

      // Send message to parent
      if (window.parent !== window) {
        window.parent.postMessage(
          {
            type: 'PAIRING_4WORDS_SUCCESS',
            data: { message: customEvent.detail.message },
          },
          '*'
        );
      }

      // Handle successful pairing
      setTimeout(() => {
        window.location.href = '/account';
      }, 2000);
    });

    window.addEventListener('pairing-error', (event: Event) => {
      const customEvent = event as CustomEvent;
      console.error('❌ Pairing error:', customEvent.detail.error);

      // Send message to parent
      if (window.parent !== window) {
        window.parent.postMessage(
          {
            type: 'PAIRING_4WORDS_ERROR',
            data: { error: customEvent.detail.error },
          },
          '*'
        );
      }

      // Handle pairing error
      alert(`Pairing error: ${customEvent.detail.error}`);
    });
  }
}

// Initialize content menu (only in iframe mode)
export function initContentMenu() {
  // Only add menu buttons if we're in an iframe
  if (window.parent !== window) {
    // Add iframe mode class to body
    document.body.classList.add('iframe-mode');

    // Add menu buttons to title container
    const titleContainer = document.querySelector('.title-container');
    if (titleContainer) {
      const menuHtml = `
        <div class="content-menu">
          <button class="menu-btn active" data-page="home">🏠 Home</button>
          <button class="menu-btn" data-page="account">👤 Account</button>
          <button class="menu-btn" data-page="settings">⚙️ Settings</button>
          <button class="menu-btn" data-page="help">❓ Help</button>
        </div>
      `;
      titleContainer.insertAdjacentHTML('beforeend', menuHtml);
    }

    const menuButtons = document.querySelectorAll('.menu-btn');

    menuButtons.forEach(button => {
      button.addEventListener('click', () => {
        // Remove active class from all buttons
        menuButtons.forEach(btn => btn.classList.remove('active'));
        // Add active class to clicked button
        button.classList.add('active');

        const page = button.getAttribute('data-page');
        console.log(`Menu clicked: ${page}`);

        // Send message to parent window
        window.parent.postMessage(
          {
            type: 'MENU_NAVIGATION',
            data: { page },
          },
          '*'
        );
      });
    });
  }
}

// Initialize iframe communication
export function initIframeCommunication() {
  // Listen for messages from parent window
  window.addEventListener('message', event => {
    // Filter out browser extension messages first
    if (
      event.data.source === 'react-devtools-content-script' ||
      event.data.hello === true ||
      !event.data.type ||
      event.data.type.startsWith('Pass::') ||
      event.data.type === 'PassClientScriptReady'
    ) {
      return; // Ignore browser extension messages
    }

    // Security check - in production, verify event.origin
    console.log('📨 Received message from parent:', event.data);

    const { type, data } = event.data;

    switch (type) {
      case 'TEST_MESSAGE':
        console.log('🧪 Test message received:', data.message);
        // Send response back to parent
        if (window.parent !== window) {
          window.parent.postMessage(
            {
              type: 'TEST_RESPONSE',
              data: { response: 'Hello from 4NK iframe!' },
            },
            '*'
          );
        }
        break;

      case 'PAIRING_4WORDS_CREATE':
        console.log('🔐 Parent requested pairing creation');
        createPairingViaIframe();
        break;

      case 'PAIRING_4WORDS_JOIN':
        console.log('🔗 Parent requested pairing join with words:', data.words);
        joinPairingViaIframe(data.words);
        break;

      case 'LISTENING':
        console.log('👂 Parent is listening for messages');
        break;

      case 'IFRAME_READY':
        console.log('✅ Iframe is ready and initialized');
        break;

      default:
        console.log('❓ Unknown message type from parent:', type);
    }
  });

  // Notify parent that iframe is ready
  if (window.parent !== window) {
    window.parent.postMessage(
      {
        type: 'IFRAME_READY',
        data: { service: '4nk-pairing' },
      },
      '*'
    );
    console.log('📡 Notified parent that iframe is ready');
  }
}

// Enhanced pairing functions using iframe
export async function createPairingViaIframe() {
  if (!iframePairing) {
    initIframePairing();
  }

  try {
    await iframePairing!.createPairing();
  } catch (error) {
    console.error('Error creating pairing via iframe:', error);
    alert(`Error creating pairing: ${(error as Error).message}`);
  }
}

export async function joinPairingViaIframe(words: string) {
  if (!iframePairing) {
    initIframePairing();
  }

  try {
    await iframePairing!.joinPairing(words);
  } catch (error) {
    console.error('Error joining pairing via iframe:', error);
    alert(`Error joining pairing: ${(error as Error).message}`);
  }
}

// Set up button listeners for iframe pairing
export function setupIframePairingButtons() {
  // Create button listener
  const createButton = document.getElementById('createButton');
  if (createButton) {
    createButton.addEventListener('click', async () => {
      console.log('🔐 Create button clicked - using iframe pairing');
      await createPairingViaIframe();
    });
  }

  // Join button listener
  const joinButton = document.getElementById('joinButton');
  const wordsInput = document.getElementById('wordsInput') as HTMLInputElement;

  if (joinButton && wordsInput) {
    // Enable join button when words are entered
    wordsInput.addEventListener('input', () => {
      const words = wordsInput.value.trim();
      (joinButton as HTMLButtonElement).disabled = !words;
    });

    joinButton.addEventListener('click', async () => {
      const words = wordsInput.value.trim();
      if (words) {
        console.log('🔗 Join button clicked - using iframe pairing with words:', words);
        await joinPairingViaIframe(words);
      }
    });
  }

  // Copy words button listener
  const copyWordsBtn = document.getElementById('copyWordsBtn');
  if (copyWordsBtn) {
    copyWordsBtn.addEventListener('click', () => {
      const creatorWordsElement = document.querySelector('#creator-words');
      if (creatorWordsElement && creatorWordsElement.textContent) {
        navigator.clipboard
          .writeText(creatorWordsElement.textContent)
          .then(() => {
            console.log('✅ Words copied to clipboard');
            // Show feedback
            const originalText = copyWordsBtn.textContent;
            copyWordsBtn.textContent = '✅ Copied!';
            setTimeout(() => {
              copyWordsBtn.textContent = originalText;
            }, 2000);
          })
          .catch(err => {
            console.error('Failed to copy words:', err);
          });
      }
    });
  }
}

// Main Pairing Interface
export function setupMainPairing(): void {
  const container = getCorrectDOM('login-4nk-component') as HTMLElement;
  
  const mainPairingButton = container.querySelector('#mainPairingButton') as HTMLButtonElement;
  const mainStatus = container.querySelector('#main-status') as HTMLElement;
  
  if (mainPairingButton) {
    mainPairingButton.addEventListener('click', async () => {
      await handleMainPairing();
    });
  }
}

async function handleMainPairing(): Promise<void> {
  const container = getCorrectDOM('login-4nk-component') as HTMLElement;
  const mainStatus = container.querySelector('#main-status') as HTMLElement;
  const mainPairingButton = container.querySelector('#mainPairingButton') as HTMLButtonElement;
  
  try {
    // Update UI
    if (mainStatus) {
      mainStatus.innerHTML = '<div class="spinner"></div><span>Authenticating with browser...</span>';
    }
    if (mainPairingButton) {
      mainPairingButton.disabled = true;
      mainPairingButton.textContent = 'Authenticating...';
    }

    // Check if we have existing credentials
    const service = await Services.getInstance();
    const { secureCredentialsService } = await import('../../services/secure-credentials.service');
    const hasCredentials = await secureCredentialsService.hasCredentials();
    
    if (hasCredentials) {
      // Existing pairing - decrypt credentials
      console.log('🔓 Existing credentials found, decrypting...');
      if (mainStatus) {
        mainStatus.innerHTML = '<div class="spinner"></div><span>Decrypting existing credentials...</span>';
      }
      
      await secureCredentialsService.retrieveCredentials(''); // Empty password for WebAuthn
      
      if (mainStatus) {
        mainStatus.innerHTML = '<span style="color: var(--success-color)">✅ Credentials decrypted successfully</span>';
      }
    } else {
      // No existing pairing - create new one
      console.log('🔐 No existing credentials, creating new pairing...');
      if (mainStatus) {
        mainStatus.innerHTML = '<div class="spinner"></div><span>Creating new secure pairing...</span>';
      }
      
      // This will trigger the WebAuthn flow and create new credentials
      await prepareAndSendPairingTx();
      
      if (mainStatus) {
        mainStatus.innerHTML = '<span style="color: var(--success-color)">✅ New pairing created successfully</span>';
      }
    }
    
    // Re-enable button
    if (mainPairingButton) {
      mainPairingButton.disabled = false;
      mainPairingButton.textContent = 'Authenticate with Browser';
    }
    
  } catch (error) {
    console.error('Pairing failed:', error);
    
    if (mainStatus) {
      mainStatus.innerHTML = '<span style="color: var(--error-color)">❌ Authentication failed</span>';
    }
    
    if (mainPairingButton) {
      mainPairingButton.disabled = false;
      mainPairingButton.textContent = 'Authenticate with Browser';
    }
  }
}