// Page AI product facade — Pi Lab only.
// Hermes / OpenCode / ACP drawer 已物理删除；本模块仅保留 tree 需要的入口桥接。

export function createSidebarPageAiRuntime(context) {
  const { pageUiState } = context || {};

  function updatePageAiTriggerState() {
    var trigger = document.querySelector('[data-testid="wolai-floating-ai"]');
    if (!(trigger instanceof HTMLElement)) return;
    var open = !!(pageUiState && pageUiState.pageAiOpen);
    trigger.setAttribute('data-state', open ? 'open' : 'closed');
    trigger.setAttribute('aria-expanded', open ? 'true' : 'false');
  }

  function openPageAiDrawer() {
    // 产品唯一入口：Pi Lab。旧 Hermes/OpenCode/Board drawer 不再打开。
    if (typeof window.createSidebarPageAiPiLabRuntime !== 'function') {
      console.warn('[page-ai] Pi Lab runtime not loaded');
      if (window.mnote && typeof window.mnote.toast === 'function') {
        window.mnote.toast('Page AI 运行时未加载', { kind: 'warning' });
      }
      return;
    }
    try {
      window.createSidebarPageAiPiLabRuntime({});
    } catch (err) {
      console.error('[page-ai] Pi Lab runtime init failed', err);
      if (window.mnote && typeof window.mnote.toast === 'function') {
        window.mnote.toast('Page AI 启动失败', { kind: 'error' });
      }
      return;
    }
    window.postMessage({ source: 'mnote-sidebar', type: 'mnote:pi-lab-show' }, window.location.origin);
    if (pageUiState) pageUiState.pageAiOpen = true;
    updatePageAiTriggerState();
  }

  function closePageAiDrawer() {
    window.postMessage({ source: 'mnote-sidebar', type: 'mnote:pi-lab-hide' }, window.location.origin);
    if (pageUiState) pageUiState.pageAiOpen = false;
    updatePageAiTriggerState();
  }

  function isPageAiDrawerOpen() {
    return !!(pageUiState && pageUiState.pageAiOpen);
  }

  function installPageAiDelegates() {
    // no-op：Hermes/OpenCode drawer 事件委托已退役；Pi Lab 自有 runtime 处理交互。
  }

  var api = {
    installPageAiDelegates: installPageAiDelegates,
    openPageAiDrawer: openPageAiDrawer,
    closePageAiDrawer: closePageAiDrawer,
    isPageAiDrawerOpen: isPageAiDrawerOpen,
    updatePageAiTriggerState: updatePageAiTriggerState
  };
  window.__mnoteSidebarPageAiRuntime = api;
  return api;
}