(function() {
  let sessionId = getCookie('chatSessionId');
  if (!sessionId) {
    sessionId = 'chat_' + Date.now() + '_' + Math.random().toString(36).substr(2, 9);
    setCookie('chatSessionId', sessionId, 365);
  }
  
  let pollingInterval = null;
  let isPolling = false;
  let lastProcessedMessageId = 0;
  let historyLoaded = false;
  let lastMessageTime = Date.now(); // НОВОЕ: отслеживание времени последнего сообщения
  let inactivityTimeout = null; // НОВОЕ: таймер неактивности
  let lastResponseTime = null; // НОВОЕ: время последнего ответа от ассистента/админа

  function getCookie(name) {
    const value = `; ${document.cookie}`;
    const parts = value.split(`; ${name}=`);
    if (parts.length === 2) return parts.pop().split(';').shift();
    return null;
  }

  function setCookie(name, value, days) {
    const expires = new Date();
    expires.setTime(expires.getTime() + (days * 24 * 60 * 60 * 1000));
    document.cookie = `${name}=${value};expires=${expires.toUTCString()};path=/`;
  }

  function initChatUI() {
    const style = document.createElement('style');
    style.textContent = `
      .floating-chat-btn {
        position: fixed;
        bottom: 30px;
        left: 30px;
        width: 70px;
        height: 70px;
        border-radius: 50%;
        background: linear-gradient(135deg, #43a8b9 0%, #3095dd 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        box-shadow: 0 4px 12px rgba(67, 168, 185, 0.3);
        z-index: 9999;
        transition: all 0.3s ease;
        border: none;
        font-size: 32px;
      }
      
      .floating-chat-btn:hover {
        transform: scale(1.1);
        box-shadow: 0 6px 20px rgba(67, 168, 185, 0.5);
      }
      
      .chat-window {
        position: fixed;
        bottom: 110px;
        left: 30px;
        width: 420px;
        height: 600px;
        border-radius: 12px;
        background: white;
        box-shadow: 0 5px 40px rgba(0,0,0,0.16);
        z-index: 9998;
        display: none;
        flex-direction: column;
        overflow: hidden;
      }
      
      .chat-window.active {
        display: flex;
        animation: slideUp 0.3s ease;
      }
      
      @keyframes slideUp {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
      }
      
      .chat-header {
        background: linear-gradient(135deg, #43a8b9 0%, #3095dd 100%);
        color: white;
        padding: 20px;
        font-weight: bold;
        display: flex;
        justify-content: space-between;
        align-items: center;
      }
      
      .chat-close {
        background: none;
        border: none;
        color: white;
        font-size: 20px;
        cursor: pointer;
        padding: 0;
      }
      
      .chat-messages {
        flex: 1;
        overflow-y: auto;
        padding: 20px;
        background: #f9f9f9;
      }
      
      .message {
        margin-bottom: 15px;
        display: flex;
        gap: 12px;
        align-items: flex-end;
      }
      
      .message.user {
        justify-content: flex-end;
      }

      .message-icon {
        width: 32px;
        height: 32px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        flex-shrink: 0;
      }

      .message.assistant .message-icon {
        background: #e0e0e0;
        color: #333;
      }

      .message.admin .message-icon {
        background: #fff3cd;
        color: #333;
      }

      .message.user .message-icon {
        display: none;
      }
      
      .message-text {
        max-width: 70%;
        padding: 12px 16px;
        border-radius: 12px;
        word-wrap: break-word;
        line-height: 1.4;
      }
      
      .message.user .message-text {
        background: linear-gradient(135deg, #43a8b9 0%, #3095dd 100%);
        color: white;
        border-bottom-right-radius: 4px;
      }
      
      .message.assistant .message-text {
        background: #e0e0e0;
        color: #333;
        border-bottom-left-radius: 4px;
      }

      .message.admin .message-text {
        background: #fff3cd;
        color: #333;
        border-bottom-left-radius: 4px;
        border-left: 3px solid #ffc107;
      }

      .message.typing .message-text {
        background: #e0e0e0;
        color: #333;
        border-bottom-left-radius: 4px;
        padding: 12px 16px;
      }

      .message.typing .message-icon {
        background: #e0e0e0;
      }
      
      .chat-input-area {
        padding: 15px;
        border-top: 1px solid #ddd;
        display: flex;
        gap: 10px;
      }
      
      .chat-input {
        flex: 1;
        border: 1px solid #ddd;
        border-radius: 6px;
        padding: 10px 12px;
        font-size: 14px;
      }
      
      .chat-send {
        background: linear-gradient(135deg, #43a8b9 0%, #3095dd 100%);
        color: white;
        border: none;
        border-radius: 6px;
        padding: 10px 16px;
        cursor: pointer;
        font-weight: bold;
      }

      .chat-send:disabled {
        opacity: 0.5;
        cursor: not-allowed;
      }
      
      .chat-send:hover:not(:disabled) {
        opacity: 0.9;
      }

      .chat-closed-notice {
        padding: 15px;
        background: #f8d7da;
        color: #721c24;
        border-top: 1px solid #ddd;
        text-align: center;
        font-size: 12px;
        display: none;
      }

      .chat-closed-notice.show {
        display: block;
      }

      .inactivity-notice {
        padding: 15px;
        background: #cfe2ff;
        color: #084298;
        border-top: 1px solid #ddd;
        text-align: center;
        font-size: 12px;
        display: none;
      }

      .inactivity-notice.show {
        display: block;
      }

      .typing-indicator {
        display: flex;
        gap: 4px;
        align-items: center;
        height: 16px;
      }

      .typing-indicator span {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: #999;
        animation: typing 1.4s infinite;
      }

      .typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
      .typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

      @keyframes typing {
        0%, 60%, 100% { opacity: 0.5; transform: translateY(0); }
        30% { opacity: 1; transform: translateY(-8px); }
      }

      @media (max-width: 480px) {
        .floating-chat-btn {
          width: 60px;
          height: 60px;
          bottom: 20px;
          left: 20px;
        }
        
        .chat-window {
          bottom: 90px;
          left: 10px;
          right: 10px;
          width: auto;
          height: 500px;
        }
      }
    `;
    document.head.appendChild(style);
    
    const btn = document.createElement('button');
    btn.className = 'floating-chat-btn';
    btn.innerHTML = '🤖';
    document.body.appendChild(btn);
    
    const chatWindow = document.createElement('div');
    chatWindow.className = 'chat-window';
    chatWindow.innerHTML = `
      <div class="chat-header">
        <span>Чат ассистент</span>
        <button class="chat-close" id="closeBtn">×</button>
      </div>
      <div class="chat-messages" id="chatMessages"></div>
      <div class="chat-closed-notice" id="chatClosedNotice">Разговор завершён</div>
      <div class="inactivity-notice" id="inactivityNotice">Сессия закрыта из-за неактивности</div>
      <div class="chat-input-area" id="chatInputArea">
        <input type="text" class="chat-input" id="chatInput" placeholder="Напишите сообщение...">
        <button class="chat-send" id="sendBtn">Отправить</button>
      </div>
    `;
    document.body.appendChild(chatWindow);
    
    btn.addEventListener('click', function() {
      chatWindow.classList.toggle('active');
      if (chatWindow.classList.contains('active')) {
        if (!historyLoaded) {
          loadChatHistory();
        }
        document.getElementById('chatInput').focus();
      }
    });
    
    document.getElementById('closeBtn').addEventListener('click', function() {
      chatWindow.classList.remove('active');
    });
    
    const sendBtn = document.getElementById('sendBtn');
    const inputField = document.getElementById('chatInput');
    
    sendBtn.addEventListener('click', sendMessage);
    inputField.addEventListener('keypress', function(e) {
      if (e.key === 'Enter' && !inputField.disabled) sendMessage();
    });

    // НОВОЕ: отслеживание активности
    inputField.addEventListener('input', function() {
      lastMessageTime = Date.now();
      resetInactivityTimer();
    });
    
    function loadChatHistory() {
      console.log('Loading chat history for sessionId:', sessionId);
      fetch('https://mafa.ccpr.ru/webhook/490e19ae-74ca-4a17-a4a7-c10b2b859a70', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          sessionId: sessionId,
          action: 'poll',
          timestamp: new Date().toISOString()
        })
      })
      .then(r => r.json())
      .then(data => {
        console.log('History response:', data);
        processMessages(data, true);
        historyLoaded = true;
        
        if (!isPolling) {
          startPolling();
        }
      })
      .catch(e => {
        console.error('History load error:', e);
        historyLoaded = true;
      });
    }
    
    function sendMessage() {
      const messageText = inputField.value.trim();
      if (!messageText) return;
      
      lastMessageTime = Date.now(); // НОВОЕ: обновляем время
      resetInactivityTimer(); // НОВОЕ: сбрасываем таймер неактивности
      
      addMessageToUI(messageText, 'user');
      inputField.value = '';
      showTypingIndicator();
      
      fetch('https://mafa.ccpr.ru/webhook/490e19ae-74ca-4a17-a4a7-c10b2b859a70', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          sessionId: sessionId,
          action: 'message',
          message: messageText,
          timestamp: new Date().toISOString()
        })
      })
      .then(r => r.json())
      .then(data => {
        console.log('Send response:', data);
        if (!isPolling) {
          startPolling();
        }
      })
      .catch(e => {
        console.error('Send error:', e);
        removeTypingIndicator();
      });
    }
    
    function addMessageToUI(text, sender) {
      const messagesDiv = document.getElementById('chatMessages');
      const messageEl = document.createElement('div');
      messageEl.className = `message ${sender}`;
      
      let icon = '';
      if (sender === 'assistant') {
        icon = '<div class="message-icon">🤖</div>';
      } else if (sender === 'admin') {
        icon = '<div class="message-icon">👤</div>';
      }
      
      messageEl.innerHTML = `${icon}<div class="message-text">${escapeHtml(text)}</div>`;
      messagesDiv.appendChild(messageEl);
      messagesDiv.scrollTop = messagesDiv.scrollHeight;
    }
    
    function escapeHtml(text) {
  const div = document.createElement('div');
  div.textContent = text;
  let html = div.innerHTML;
  
  // Преобразуем ссылки в активные, игнорируя скобки в конце
  html = html.replace(/(https?:\/\/[^\s\)\]\}]+)/g, function(match) {
    // Удаляем закрывающие скобки если они в конце
    let url = match.replace(/[\)\]\}]+$/, '');
    return '<a href="' + url + '" target="_blank" style="color: inherit; text-decoration: underline;">' + url + '</a>';
  });
  
  return html;
}

    function processMessages(data, isHistory = false) {
      console.log('processMessages data:', data, 'isHistory:', isHistory);
      
      let messages = [];
      
      if (data && data.data && Array.isArray(data.data)) {
        messages = data.data;
      } else if (Array.isArray(data) && data[0] && data[0].data && Array.isArray(data[0].data)) {
        messages = data[0].data;
      }

      console.log('Extracted messages:', messages);

      if (messages.length === 0) {
        console.warn('No messages found in response');
        return;
      }

      messages.forEach(msg => {
        if (msg.id <= lastProcessedMessageId && !isHistory) {
          console.log('Skipping already processed message id:', msg.id);
          return;
        }

        let senderType = 'assistant';
        if (msg.message_type === 'user') {
          senderType = 'user';
        } else if (msg.message_type === 'admin') {
          senderType = 'admin';
        } else if (msg.message_type === 'assistant') {
          senderType = 'assistant';
        }

        console.log('Adding message id:', msg.id, 'text:', msg.message_text, 'type:', senderType);
        addMessageToUI(msg.message_text, senderType);
        lastProcessedMessageId = msg.id;
      });

      if (!isHistory && messages.length > 0) {
        const lastMessage = messages[messages.length - 1];
        if (lastMessage.status === false) {
          stopPolling();
          showChatClosed();
        }
      }
    }
    
    function startPolling() {
      isPolling = true;
      console.log('Starting polling with lastProcessedMessageId:', lastProcessedMessageId);
      
      pollingInterval = setInterval(function() {
        // НОВОЕ: проверяем неактивность (3 минуты = 180000 мс)
        const timeSinceLastMessage = Date.now() - lastMessageTime;
        if (timeSinceLastMessage > 180000) { // 3 минуты
          console.log('User inactive for 3 minutes, stopping polling');
          stopPolling();
          showInactivityNotice();
          return;
        }

        // НОВОЕ: проверяем таймаут ответа (5 минут = 300000 мс)
        if (lastResponseTime !== null) {
          const timeSinceLastResponse = Date.now() - lastResponseTime;
          if (timeSinceLastResponse > 300000) { // 5 минут
            console.log('No response for 5 minutes, stopping polling');
            stopPolling();
            showInactivityNotice();
            return;
          }
        }

        fetch('https://mafa.ccpr.ru/webhook/490e19ae-74ca-4a17-a4a7-c10b2b859a70', {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify({
            sessionId: sessionId,
            action: 'poll',
            timestamp: new Date().toISOString()
          })
        })
        .then(r => r.json())
        .then(data => {
          console.log('Poll response:', data);
          
          let messages = [];
          
          if (data && data.data && Array.isArray(data.data)) {
            messages = data.data;
          } else if (Array.isArray(data) && data[0] && data[0].data && Array.isArray(data[0].data)) {
            messages = data[0].data;
          }

          if (messages.length > 0) {
            const newResponses = messages.filter(msg => 
              msg.id > lastProcessedMessageId && 
              (msg.message_type === 'assistant' || msg.message_type === 'admin')
            );
            
            console.log('New responses found:', newResponses.length);
            
            if (newResponses.length > 0) {
              removeTypingIndicator();
              lastMessageTime = Date.now(); // Обновляем время последнего сообщения (важно!)
              lastResponseTime = Date.now(); // НОВОЕ: обновляем время ответа
              
              newResponses.forEach(msg => {
                let senderType = msg.message_type === 'admin' ? 'admin' : 'assistant';
                
                console.log('Adding new response:', msg.message_text, 'type:', senderType);
                addMessageToUI(msg.message_text, senderType);
                lastProcessedMessageId = msg.id;
              });
            }
            
            const maxId = Math.max(...messages.map(m => m.id));
            if (maxId > lastProcessedMessageId) {
              lastProcessedMessageId = maxId;
            }
            
            const lastMessage = messages[messages.length - 1];
            if (lastMessage.status === false) {
              stopPolling();
              showChatClosed();
            }
          }
        })
        .catch(e => {
          console.error('Poll error:', e);
          stopPolling();
        });
      }, 4000);
    }
    
    function stopPolling() {
      if (pollingInterval) {
        clearInterval(pollingInterval);
        pollingInterval = null;
      }
      isPolling = false;
      removeTypingIndicator();
    }

    // НОВОЕ: сброс таймера неактивности
    function resetInactivityTimer() {
      if (inactivityTimeout) {
        clearTimeout(inactivityTimeout);
      }
      // Опционально: можно добавить таймер для закрытия чата через 5 минут
    }

    function showTypingIndicator() {
      removeTypingIndicator();
      const messagesDiv = document.getElementById('chatMessages');
      const typingEl = document.createElement('div');
      typingEl.id = 'typingIndicator';
      typingEl.className = 'message typing';
      typingEl.innerHTML = '<div class="message-icon">🤖</div><div class="message-text"><div class="typing-indicator"><span></span><span></span><span></span></div></div>';
      messagesDiv.appendChild(typingEl);
      messagesDiv.scrollTop = messagesDiv.scrollHeight;
    }
    
    function removeTypingIndicator() {
      const typingEl = document.getElementById('typingIndicator');
      if (typingEl) typingEl.remove();
    }

    function showChatClosed() {
      const notice = document.getElementById('chatClosedNotice');
      notice.classList.add('show');
    }

    // НОВОЕ: показываем уведомление о неактивности
    function showInactivityNotice() {
      const notice = document.getElementById('inactivityNotice');
      notice.classList.add('show');
    }
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', initChatUI);
  } else {
    initChatUI();
  }
})();