// Global variables
let settings = {
  serverUrl: 'https://api.pragmatismo.com.br/general-bots/process',
  enableProcessing: true,
  hideContacts: false
};

// Original message storage (before processing)
const originalMessages = new Map();

// Initialize the extension
function init() {
  console.log('General Bots: Initializing...');
  
  // Load settings
  chrome.storage.sync.get({
    serverUrl: 'https://api.pragmatismo.com.br/general-bots/process',
    enableProcessing: true,
    hideContacts: false
  }, function(items) {
    settings = items;
    console.log('General Bots: Settings loaded', settings);
    
    // Apply hide contacts if enabled
    applyContactVisibility();
    
    // Start monitoring the input field
    setupInputListener();
  });
}

// Apply contact list visibility based on settings
function applyContactVisibility() {
  const contactList = document.querySelector('#pane-side');
  if (contactList) {
    if (settings.hideContacts) {
      contactList.parentElement.classList.add('gb-hide-contacts');
    } else {
      contactList.parentElement.classList.remove('gb-hide-contacts');
    }
  }
}

// Setup input field listener
function setupInputListener() {
  // The main input field where users type messages
  const inputSelector = 'div[contenteditable="true"][data-tab="10"]';
  
  // Use MutationObserver to detect when the input field appears
  const observer = new MutationObserver(mutations => {
    const inputField = document.querySelector(inputSelector);
    if (inputField && !inputField.getAttribute('gb-monitored')) {
      setupFieldMonitoring(inputField);
      inputField.setAttribute('gb-monitored', 'true');
    }
  });
  
  observer.observe(document.body, {
    childList: true,
    subtree: true
  });
  
  // Also check immediately in case the field is already present
  const inputField = document.querySelector(inputSelector);
  if (inputField && !inputField.getAttribute('gb-monitored')) {
    setupFieldMonitoring(inputField);
    inputField.setAttribute('gb-monitored', 'true');
  }
}

// Setup monitoring for a specific input field
function setupFieldMonitoring(inputField) {
  console.log('General Bots: Setting up input field monitoring');
  
  // Listen for keydown events (Enter key)
  inputField.addEventListener('keydown', async (event) => {
    if (event.key === 'Enter' && !event.shiftKey && settings.enableProcessing) {
      const originalText = inputField.textContent;
      
      // Only process if there's actual text
      if (originalText.trim().length > 0) {
        // Prevent default Enter behavior temporarily
        event.preventDefault();
        
        try {
          // Process message with server
          const processedText = await processMessage(originalText);
          
          // Replace text in the input field
          inputField.textContent = processedText;
          
          // Store original message for reference
          const timestamp = Date.now();
          originalMessages.set(timestamp, {
            original: originalText,
            processed: processedText
          });
          
          // Simulate Enter press to send the message
          simulateEnterPress(inputField);
          
          // Track the message to update it after sending
          trackSentMessage(timestamp);
        } catch (error) {
          console.error('General Bots: Error processing message', error);
          // Let the original message be sent if there's an error
          simulateEnterPress(inputField);
        }
      }
    }
  });
}

// Process message with server
async function processMessage(text) {
  console.log('General Bots: Processing message with server');
  
  try {
    const response = await fetch(settings.serverUrl, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({
        text: text,
        timestamp: Date.now()
      })
    });
    
    if (!response.ok) {
      throw new Error(`Server responded with status: ${response.status}`);
    }
    
    const data = await response.json();
    return data.processedText || text;
  } catch (error) {
    console.error('General Bots: Failed to process message', error);
    return text; // Return original text if processing fails
  }
}

// Simulate Enter key press
function simulateEnterPress(element) {
  const enterEvent = new KeyboardEvent('keydown', {
    key: 'Enter',
    code: 'Enter',
    keyCode: 13,
    which: 13,
    bubbles: true
  });
  element.dispatchEvent(enterEvent);
}

// Track sent message to update it after sending
function trackSentMessage(timestamp) {
  // Monitor for the message to appear in the chat
  const observer = new MutationObserver(mutations => {
    // Look for recently sent messages
    const messageContainers = document.querySelectorAll('.message-out');
    if (messageContainers.length > 0) {
      // Get the last sent message
      const lastMessage = messageContainers[messageContainers.length - 1];
      
      // Check if this message has our data
      if (!lastMessage.getAttribute('gb-processed')) {
        // Get message info
        const messageInfo = originalMessages.get(timestamp);
        if (messageInfo) {
          // Mark as processed
          lastMessage.setAttribute('gb-processed', timestamp);
          
          // Update message text if different from original
          if (messageInfo.original !== messageInfo.processed) {
            updateSentMessageDisplay(lastMessage, messageInfo);
          }
          
          // Clean up
          setTimeout(() => {
            originalMessages.delete(timestamp);
          }, 60000); // Remove after 1 minute
          
          // Stop observing
          observer.disconnect();
        }
      }
    }
  });
  
  // Start observing chat container
  const chatContainer = document.querySelector('.copyable-area');
  if (chatContainer) {
    observer.observe(chatContainer, {
      childList: true,
      subtree: true
    });
    
    // Stop observing after a reasonable timeout
    setTimeout(() => {
      observer.disconnect();
    }, 10000); // 10 seconds timeout
  }
}

// Update the displayed message after sending
function updateSentMessageDisplay(messageElement, messageInfo) {
  const textElement = messageElement.querySelector('.selectable-text');
  if (textElement) {
    // Create a small indicator that the message was processed
    const indicator = document.createElement('div');
    indicator.className = 'gb-processed-indicator';
    indicator.title = `Original: "${messageInfo.original}"`;
    indicator.textContent = '✓ AI processed';
    
    // Add the indicator to the message
    messageElement.appendChild(indicator);
    
    // Add tooltip behavior
    messageElement.classList.add('gb-processed-message');
  }
}

// Listen for messages from popup or background
chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
  if (message.action === 'settingsUpdated') {
    settings = message.settings;
    applyContactVisibility();
    console.log('General Bots: Settings updated', settings);
  } else if (message.action === 'tabReady') {
    init();
  }
  
  return true;
});

// Initialize on load
document.addEventListener('DOMContentLoaded', init);

// Also try to initialize now in case the page is already loaded
init();