{% extends 'body_base.html' %}

{% block title %}Minne - Chat{% endblock %}

{% block main %}
<div class="flex grow relative justify-center mt-2 sm:mt-4">
  <div class="container">
    <section class="mb-3">
      <div class="nb-panel p-3 flex items-center justify-between">
        {% block chat_header_actions %}
        {% endblock %}
      </div>
    </section>
    <div id="chat-scroll-container" class="overflow-auto hide-scrollbar">
      {% block chat_content %}
      {% endblock %}
    </div>
  </div>
</div>

<script>
  function doScrollChatToBottom() {
    const mainScroll = document.querySelector('main');
    if (mainScroll) mainScroll.scrollTop = mainScroll.scrollHeight;

    const chatScroll = document.getElementById('chat-scroll-container');
    if (chatScroll) chatScroll.scrollTop = chatScroll.scrollHeight;

    const chatContainer = document.getElementById('chat_container');
    if (chatContainer) chatContainer.scrollTop = chatContainer.scrollHeight;

    window.scrollTo(0, document.body.scrollHeight);
  }

  function scrollChatToBottom() {
    if (!window.location.pathname.startsWith('/chat')) return;
    requestAnimationFrame(doScrollChatToBottom);
  }

  window.scrollChatToBottom = scrollChatToBottom;

  // Delay initial scroll to avoid interfering with view transition
  document.addEventListener('DOMContentLoaded', () => setTimeout(scrollChatToBottom, 350));

  function handleChatSwap(e) {
    if (!window.location.pathname.startsWith('/chat')) return;
    // Full page swap: delay for view transition; partial swap: immediate
    if (e.detail && e.detail.target && e.detail.target.tagName === 'BODY') {
      setTimeout(scrollChatToBottom, 350);
    } else {
      scrollChatToBottom();
    }
  }

  function cleanupChatListeners(e) {
    if (e.detail && e.detail.target && e.detail.target.tagName === 'BODY') {
      document.body.removeEventListener('htmx:afterSwap', window._chatEventHandlers.afterSwap);
      document.body.removeEventListener('htmx:afterSettle', window._chatEventHandlers.afterSettle);
      document.body.removeEventListener('htmx:beforeSwap', window._chatEventHandlers.beforeSwap);
      delete window._chatEventHandlers;
      window._chatListenersAttached = false;
    }
  }

  window._chatEventHandlers = {
    afterSwap: handleChatSwap,
    afterSettle: handleChatSwap,
    beforeSwap: cleanupChatListeners
  };

  if (!window._chatListenersAttached) {
    document.body.addEventListener('htmx:afterSwap', window._chatEventHandlers.afterSwap);
    document.body.addEventListener('htmx:afterSettle', window._chatEventHandlers.afterSettle);
    document.body.addEventListener('htmx:beforeSwap', window._chatEventHandlers.beforeSwap);
    window._chatListenersAttached = true;
  }
</script>
{% endblock %}