(function () {
  console.log("Keyboard shortcuts script loaded");
  
  // --- Autoscroll control ---
  let lastSendTs = 0;
  let userPinnedScroll = false;
  let chatContainer = null;
  let chatObserver = null;
  
  const now = () => Date.now();
  const SEND_AUTOSCROLL_WINDOW_MS = 2500;
  const NEAR_BOTTOM_PX = 120;
  
  const getChatContainer = () => {
    if (chatContainer && document.body.contains(chatContainer)) return chatContainer;
    // Prefer explicit elem_id container
    const root = document.getElementById('chatbot') || document.querySelector('#chatbot');
    // Fallbacks: any visible gr-chatbot within left pane
    const candidates = [];
    if (root) candidates.push(root);
    candidates.push(
      document.querySelector('#left-pane .gr-chatbot'),
      document.querySelector('.gr-chatbot'),
      document.querySelector('#left-pane [data-testid="chatbot"]')
    );
    for (const el of candidates) {
      if (!el) continue;
      // Try common inner scroll area
      let container = el.querySelector('[data-testid="bot"]') || el.querySelector('[data-testid="chatbot"]') || el;
      // Walk down to the element that actually scrolls
      const stack = [container];
      while (stack.length) {
        const cur = stack.shift();
        if (!cur) continue;
        const style = cur instanceof Element ? getComputedStyle(cur) : null;
        const canScroll = style && (style.overflowY === 'auto' || style.overflowY === 'scroll');
        if (canScroll && cur.scrollHeight > cur.clientHeight + 10) {
          chatContainer = cur;
          break;
        }
        if (cur.children && cur.children.length) stack.push(...cur.children);
      }
      if (!chatContainer) chatContainer = container;
      if (chatContainer) break;
    }
    return chatContainer;
  };
  
  const isNearBottom = (el) => {
    if (!el) return true;
    const distance = el.scrollHeight - el.scrollTop - el.clientHeight;
    return distance <= NEAR_BOTTOM_PX;
  };
  
  const scrollToBottom = (el) => {
    if (!el) return;
    el.scrollTo({ top: el.scrollHeight, behavior: 'auto' });
  };
  
  const attachScrollListener = () => {
    const el = getChatContainer();
    if (!el) return;
    el.addEventListener('scroll', () => {
      // If the user scrolls up away from bottom, pin the position
      userPinnedScroll = !isNearBottom(el);
    }, { passive: true });
  };
  
  const observeChat = () => {
    const el = getChatContainer();
    if (!el) return;
    if (chatObserver) chatObserver.disconnect();
    chatObserver = new MutationObserver(() => {
      const withinSendWindow = now() - lastSendTs < SEND_AUTOSCROLL_WINDOW_MS;
      const shouldScroll = withinSendWindow || (!userPinnedScroll && isNearBottom(el));
      if (shouldScroll) scrollToBottom(el);
    });
    chatObserver.observe(el, { childList: true, subtree: true, characterData: true });
  };
  
  const send = () => {
    // Try multiple selectors to find the send button
    const selectors = [
      '#send-btn',
      'button[id="send-btn"]',
      '.gr-button:contains("Send")',
      'button:contains("Send")',
      '#send-btn button',
      '[data-testid*="send"]',
      'button[variant="primary"]'
    ];
    
    let btn = null;
    for (let selector of selectors) {
      try {
        if (selector.includes(':contains')) {
          // Handle :contains selector manually
          const buttons = document.querySelectorAll('button');
          for (let button of buttons) {
            if (button.textContent.trim() === 'Send') {
              btn = button;
              break;
            }
          }
        } else {
          btn = document.querySelector(selector);
        }
        if (btn) {
          console.log("Found send button with selector:", selector);
          break;
        }
      } catch (e) {
        // Skip invalid selectors
      }
    }
    
    if (btn) {
      console.log("Clicking send button");
      lastSendTs = now();
      // When sending, allow autoscroll for initial response
      userPinnedScroll = false;
      // Ensure observers are up
      setTimeout(() => { attachScrollListener(); observeChat(); }, 0);
      btn.click();
      return true;
    } else {
      console.log("Send button not found");
      // Debug: log all buttons
      const allButtons = document.querySelectorAll('button');
      console.log("All buttons found:", allButtons);
      return false;
    }
  };
  
  const setupKeyboardShortcuts = () => {
    console.log("Setting up keyboard shortcuts");
    // Initialize observers once UI is present
    setTimeout(() => { attachScrollListener(); observeChat(); }, 50);
    setTimeout(() => { attachScrollListener(); observeChat(); }, 400);
    
    document.addEventListener('keydown', (e) => {
      const isCmdEnter = (e.metaKey || e.ctrlKey) && e.key === 'Enter';
      const isEnter = e.key === 'Enter' && !e.shiftKey && !e.metaKey && !e.ctrlKey;
      const isInputFocused = document.activeElement && 
        (document.activeElement.matches('#chat-input textarea') || 
         document.activeElement.matches('.chat-input-box textarea'));
      
      if ((isCmdEnter || (isEnter && isInputFocused)) && isInputFocused) {
        console.log("Send triggered");
        e.preventDefault();
        e.stopPropagation();
        
        const success = send();
        if (!success) {
          console.log("Failed to send, trying again in 100ms");
          setTimeout(send, 100);
        }
      }
      
      if (e.key === 'Escape') {
        const input = document.querySelector('#chat-input textarea') || document.querySelector('.chat-input-box textarea');
        if (input) {
          input.focus();
          console.log("Focused input field");
        }
      }
    }, true);
    
    console.log("Keyboard shortcuts set up");
  };
  
  // Multiple attempts to set up shortcuts
  const attempts = [100, 500, 1000, 2000];
  attempts.forEach(delay => {
    setTimeout(() => {
      console.log(`Attempting setup after ${delay}ms`);
      setupKeyboardShortcuts();
    }, delay);
  });
  
  // Force light theme - disable dark mode switching
  const forceTheme = () => {
    // Remove any dark theme classes that might be added
    document.documentElement.classList.remove('dark');
    document.body.classList.remove('dark');
    
    // Set light color scheme
    document.documentElement.style.colorScheme = 'light';
    
    // Override any theme preference that might be set
    if (window.matchMedia) {
      const darkModeQuery = window.matchMedia('(prefers-color-scheme: dark)');
      // Override the matches property to always return false
      Object.defineProperty(darkModeQuery, 'matches', {
        value: false,
        writable: false
      });
    }
  };
  
  // Apply theme override immediately and on any DOM changes
  forceTheme();
  
  // Watch for any changes and reapply theme override
  const observer = new MutationObserver(() => {
    forceTheme();
  });
  
  observer.observe(document.documentElement, {
    attributes: true,
    attributeFilter: ['class', 'data-theme', 'theme']
  });
  
  // Also set up immediately if DOM is ready
  if (document.readyState !== 'loading') {
    setupKeyboardShortcuts();
  } else {
    document.addEventListener('DOMContentLoaded', setupKeyboardShortcuts);
  }
  
})();