// Content Script - runs on X.com
// Adds "Save to Hookd" option to tweet/post menu

console.log('Hookd content script loaded');

// Listen for messages from background
chrome.runtime.onMessage.addListener((msg, sender, response) => {
  if (msg.type === 'GET_SAVED') {
    response([]);
  }
});

// Add "Save to Hookd" to X's menu
function addHookdOption() {
  // Find all "more" buttons (the ... button on tweets/posts)
  document.querySelectorAll('[data-testid="tweet"] [role="button"], [data-testid="tweet"] [aria-label*="more"], [data-testid="tweet"] [aria-label*="More"]').forEach(menuBtn => {
    // Check if we already added our option
    if (menuBtn.closest('[data-testid="tweet"]')?.querySelector('.hookd-menu-option')) continue;
    
    const tweet = menuBtn.closest('[data-testid="tweet"]');
    if (!tweet) return;
    
    // Create save button
    const saveBtn = document.createElement('div');
    saveBtn.className = 'hookd-menu-option';
    saveBtn.style.cssText = `
      padding: 12px 16px;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 15px;
      color: #fff;
    `;
    saveBtn.innerHTML = '<span style="font-size:18px;">📌</span><span>Save to Hookd</span>';
    
    saveBtn.addEventListener('click', (e) => {
      e.stopPropagation();
      saveTweet(tweet);
    });
    
    // Find the dropdown menu and append
    const dropdown = menuBtn.closest('[role="menu"]') || menuBtn.closest('div[aria-labelledby]');
    if (dropdown && !dropdown.querySelector('.hookd-menu-option')) {
      dropdown.appendChild(saveBtn);
    }
  });
  
  // Also try to find DM more options
  document.querySelectorAll('[data-testid="DMMessage"] [role="button"]').forEach(btn => {
    if (btn.textContent.includes('more') || btn.getAttribute('aria-label')?.includes('more')) {
      const dm = btn.closest('[data-testid="DMMessage"]');
      if (dm && !dm.querySelector('.hookd-menu-option')) {
        const saveBtn = document.createElement('div');
        saveBtn.className = 'hookd-menu-option';
        saveBtn.style.cssText = `
          padding: 8px 12px;
          cursor: pointer;
          display: flex;
          align-items: center;
          gap: 8px;
          font-size: 13px;
        `;
        saveBtn.innerHTML = '📌 Save to Hookd';
        
        saveBtn.addEventListener('click', (e) => {
          e.stopPropagation();
          saveDM(dm);
        });
        
        // Insert after the clickable area
        btn.parentElement?.appendChild(saveBtn);
      }
    }
  });
}

// Save tweet
function saveTweet(tweetElement) {
  try {
    // Extract author
    const authorEl = tweetElement.querySelector('[data-testid="User-Name"] span a[role="link"]') || 
                     tweetElement.querySelector('a[tabindex="-1"]');
    const author = authorEl?.textContent?.trim()?.replace('@', '') || 'unknown';
    
    // Extract content
    const contentEl = tweetElement.querySelector('[data-testid="tweetText"]');
    const content = contentEl?.textContent?.trim() || '';
    
    // Extract link
    const linkEl = tweetElement.querySelector('a[href*="/status/"]');
    const link = linkEl?.href || '';
    
    const item = {
      id: Date.now(),
      author: author,
      content: content.substring(0, 500),
      link: link,
      source: 'tweet',
      time: new Date().toISOString()
    };
    
    // Save to storage via background
    chrome.runtime.sendMessage({
      type: 'SAVE_ITEM',
      data: item
    }, (response) => {
      if (response?.success) {
        showNotification('Saved to Hookd!');
      } else {
        showNotification('Failed to save');
      }
    });
  } catch (err) {
    console.error('Hookd save error:', err);
    showNotification('Error saving');
  }
}

// Save DM
function saveDM(dmElement) {
  try {
    const contentEl = dmElement.querySelector('[data-testid="dmMessageContent"]');
    const content = contentEl?.textContent?.trim() || '';
    
    const item = {
      id: Date.now(),
      author: 'DM',
      content: content.substring(0, 500),
      source: 'dm',
      time: new Date().toISOString()
    };
    
    chrome.runtime.sendMessage({
      type: 'SAVE_ITEM',
      data: item
    }, (response) => {
      if (response?.success) {
        showNotification('Saved to Hookd!');
      } else {
        showNotification('Failed to save');
      }
    });
  } catch (err) {
    console.error('Hookd save error:', err);
  }
}

// Show notification
function showNotification(message) {
  const notif = document.createElement('div');
  notif.style.cssText = `
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #4F46E5;
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    font-family: Arial, sans-serif;
    font-size: 14px;
    z-index: 99999;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  `;
  notif.textContent = message;
  document.body.appendChild(notif);
  
  setTimeout(() => {
    notif.style.opacity = '0';
    notif.style.transition = 'opacity 0.3s';
    setTimeout(() => notif.remove(), 300);
  }, 2000);
}

// Watch for new elements
const observer = new MutationObserver(() => {
  addHookdOption();
});

// Start observing
observer.observe(document.body, {
  childList: true,
  subtree: true
});

// Initial scan
setTimeout(addHookdOption, 1000);
setTimeout(addHookdOption, 3000);

console.log('Hookd content script initialized');