// MNote 主壳文件树运行时外置模块。
// 当前先承接 SIDEBAR_TREE_JS 中低风险的行数据解析 helper；
// inline script 保留 fallback，避免模块加载顺序影响首屏行为。

function fileTreeRowKind(row) {
  if (!(row instanceof HTMLElement)) return '';
  return String(row.getAttribute('data-row-kind') || '').trim();
}

function fileTreeRowDocumentId(row) {
  if (!(row instanceof HTMLElement)) return '';
  return String(row.getAttribute('data-document-id') || row.getAttribute('data-doc-id') || '').trim();
}

function fileTreeRowAssetId(row, deps) {
  if (!(row instanceof HTMLElement)) return '';
  var assetId = String(row.getAttribute('data-asset-id') || '').trim();
  if (assetId) return assetId;
  var currentSourceKind = deps && typeof deps.currentSourceKind === 'function' ? deps.currentSourceKind : function() { return ''; };
  if (currentSourceKind() === 'local_folder' && fileTreeRowKind(row) === 'asset') {
    return String(row.getAttribute('data-row-id') || '').trim();
  }
  return '';
}

function decodeLocalEncodedPath(value) {
  var path = String(value || '').trim().replace(/~2F/g, '/');
  if (!path) return '';
  try {
    return decodeURIComponent(path);
  } catch (_) {
    return path;
  }
}

function fileTreeRowLocalRelativePath(row, deps) {
  if (!(row instanceof HTMLElement)) return '';
  var direct = String(row.getAttribute('data-local-relative-path') || '').trim();
  if (direct) return direct;
  var localFilePathFromAssetId = deps && typeof deps.localFilePathFromAssetId === 'function'
    ? deps.localFilePathFromAssetId
    : function() { return ''; };
  var assetPath = localFilePathFromAssetId(fileTreeRowAssetId(row, deps));
  if (assetPath) return assetPath;
  var rowId = String(row.getAttribute('data-row-id') || '').trim();
  var nodeId = String(row.getAttribute('data-node-id') || '').trim();
  var documentId = fileTreeRowDocumentId(row);
  var kind = fileTreeRowKind(row);
  if (rowId.indexOf('local:asset:') === 0) return rowId.slice('local:asset:'.length);
  if (rowId.indexOf('local:markdown:') === 0) return rowId.slice('local:markdown:'.length);
  if (rowId.indexOf('local:folder:') === 0) return rowId.slice('local:folder:'.length);
  if (rowId.indexOf('local:node:') === 0) return rowId.slice('local:node:'.length);
  if (nodeId.indexOf('local:node:') === 0) return nodeId.slice('local:node:'.length);
  if ((kind === 'document' || kind === 'doc' || kind === 'markdown') && documentId.indexOf('local-md:') === 0) {
    return decodeLocalEncodedPath(documentId.slice('local-md:'.length));
  }
  if ((kind === 'folder' || kind === 'directory' || kind === 'index') && documentId.indexOf('local-dir:') === 0) {
    return decodeLocalEncodedPath(documentId.slice('local-dir:'.length));
  }
  return '';
}

function fileTreeRowLocalUploadTargetRelativePath(row, deps) {
  if (!(row instanceof HTMLElement)) return '';
  var kind = fileTreeRowKind(row);
  var relativePath = fileTreeRowLocalRelativePath(row, deps);
  if (!relativePath) return '';
  if (kind === 'folder' || kind === 'directory') return relativePath;
  var lastSlash = relativePath.lastIndexOf('/');
  return lastSlash >= 0 ? relativePath.slice(0, lastSlash) : '';
}

function isFileTreeDownloadableAssetRow(row, deps) {
  if (!(row instanceof HTMLElement)) return false;
  var kind = fileTreeRowKind(row);
  if (kind === 'document' || kind === 'doc' || kind === 'index' || kind === 'markdown' || kind === 'folder' || kind === 'directory') return false;
  return Boolean(fileTreeRowAssetId(row, deps));
}

function isFileTreeDownloadableRow(row, deps) {
  if (!(row instanceof HTMLElement)) return false;
  var currentSourceKind = deps && typeof deps.currentSourceKind === 'function' ? deps.currentSourceKind : function() { return ''; };
  if (currentSourceKind() !== 'local_folder') return isFileTreeDownloadableAssetRow(row, deps);
  return Boolean(fileTreeRowLocalRelativePath(row, deps) || isFileTreeDownloadableAssetRow(row, deps));
}

function fileTreeAssetDownloadDetail(row, deps) {
  if (!isFileTreeDownloadableRow(row, deps)) return null;
  var rowTitle = deps && typeof deps.rowTitle === 'function' ? deps.rowTitle : function() { return ''; };
  var resolveWorkspaceId = deps && typeof deps.resolveWorkspaceId === 'function' ? deps.resolveWorkspaceId : function() { return ''; };
  var title = rowTitle(row);
  var relativePath = fileTreeRowLocalRelativePath(row, deps);
  var assetId = fileTreeRowAssetId(row, deps) || (relativePath ? 'local-file:' + relativePath : '');
  return {
    contextKind: 'filetree',
    documentId: fileTreeRowDocumentId(row),
    rowId: row.getAttribute('data-row-id') || '',
    rowKind: fileTreeRowKind(row),
    assetId: assetId,
    localRelativePath: relativePath,
    title: title,
    fileName: title,
    workspaceId: resolveWorkspaceId(row)
  };
}

function fileTreeRowsByRowIds(rowIds, deps) {
  var cssEscape = deps && typeof deps.cssEscape === 'function' ? deps.cssEscape : function(value) { return String(value).replace(/["\\]/g, '\\$&'); };
  return (rowIds || []).map(function(rowId) {
    return document.querySelector('#sidebar-file-tree-root .tree-row[data-shell-mode="filetree"][data-row-id="' + cssEscape(rowId) + '"]');
  }).filter(function(row) { return row instanceof HTMLElement; });
}

function fileTreeChildCount(documentId, deps) {
  if (!documentId) return 0;
  var cssEscape = deps && typeof deps.cssEscape === 'function' ? deps.cssEscape : function(value) { return String(value).replace(/["\\]/g, '\\$&'); };
  var row = document.querySelector('#sidebar-file-tree-root .tree-row[data-shell-mode="filetree"][data-row-id="' + cssEscape('doc:' + documentId) + '"]');
  var node = row ? row.closest('.tree-node') : null;
  var children = node ? node.querySelectorAll(':scope > .tree-children > .tree-node > .tree-row[data-shell-mode="filetree"][data-row-kind="document"], :scope > .tree-children > .tree-node > .tree-row[data-shell-mode="filetree"][data-row-kind="doc"]') : [];
  return children.length;
}

function defaultEscapeHtml(value) {
  return String(value == null ? '' : value)
    .replace(/&/g, '&')
    .replace(/</g, '&lt;')
    .replace(/>/g, '&gt;')
    .replace(/"/g, '&quot;')
    .replace(/'/g, '&#39;');
}

function defaultObjectIdentityAttr(identity) {
  try {
    return JSON.stringify(identity || {});
  } catch (_) {
    return '';
  }
}

function revealFileTreeRow(row) {
  if (!(row instanceof HTMLElement)) return;
  var node = row.closest('.tree-node');
  while (node && node.parentElement) {
    if (node.parentElement.classList && node.parentElement.classList.contains('tree-children')) {
      node.parentElement.classList.remove('tree-children--collapsed');
      var parentNode = node.parentElement.closest('.tree-node');
      var parentRow = parentNode ? parentNode.querySelector(':scope > .tree-row') : null;
      if (parentRow instanceof HTMLElement) {
        parentRow.setAttribute('aria-expanded', 'true');
        var toggle = parentRow.querySelector('[data-rust-action="toggle"]');
        if (toggle) toggle.setAttribute('aria-expanded', 'true');
      }
    }
    node = node.parentElement.closest('.tree-node');
  }
  try { row.scrollIntoView({ block: 'nearest' }); } catch (_) {}
}

function revealFileTreeAssetRow(assetId, deps) {
  if (!assetId) return false;
  var cssEscape = deps && typeof deps.cssEscape === 'function' ? deps.cssEscape : function(value) { return String(value).replace(/["\\]/g, '\\$&'); };
  var row = document.querySelector('.tree-row[data-shell-mode="filetree"][data-asset-id="' + cssEscape(assetId) + '"]');
  if (!(row instanceof HTMLElement)) return false;
  revealFileTreeRow(row);
  return true;
}

function appendUploadedAssetRow(asset, documentId, deps) {
  deps = deps || {};
  var cssEscape = typeof deps.cssEscape === 'function' ? deps.cssEscape : function(value) { return String(value).replace(/["\\]/g, '\\$&'); };
  var escapeHtml = typeof deps.escapeHtml === 'function' ? deps.escapeHtml : defaultEscapeHtml;
  var objectIdentityAttr = typeof deps.objectIdentityAttr === 'function' ? deps.objectIdentityAttr : defaultObjectIdentityAttr;
  var uploadedAssetTitle = typeof deps.uploadedAssetTitle === 'function' ? deps.uploadedAssetTitle : function(nextAsset) {
    return String(nextAsset && (nextAsset.file_name || nextAsset.title || nextAsset.name) || '未命名附件').trim() || '未命名附件';
  };
  var uploadedAssetType = typeof deps.uploadedAssetType === 'function' ? deps.uploadedAssetType : function(nextAsset) {
    return String(nextAsset && (nextAsset.asset_type || nextAsset.assetType || nextAsset.mime_type || '') || '').trim();
  };
  var fileTreeIconKindForFileName = typeof deps.fileTreeIconKindForFileName === 'function' ? deps.fileTreeIconKindForFileName : function() { return ''; };
  var currentDocumentId = typeof deps.currentDocumentId === 'function' ? deps.currentDocumentId : function() { return ''; };
  var currentSourceKind = typeof deps.currentSourceKind === 'function' ? deps.currentSourceKind : function() { return ''; };
  var assetId = String(asset && asset.id || '').trim();
  if (!assetId) return false;
  if (revealFileTreeAssetRow(assetId, { cssEscape: cssEscape })) return true;
  var objectKind = String(asset && (asset.objectKind || asset.resourceKind || '') || '').trim();
  if (!objectKind && (String(asset && (asset.asset_type || asset.assetType) || '').trim() === 'mindmap' || /\.mindmap\.json$/i.test(assetId))) {
    objectKind = 'mindmap';
  }
  var targetDocumentId = String(documentId || asset.document_id || asset.documentId || currentDocumentId() || '').trim();
  var parentRow = targetDocumentId
    ? document.querySelector('.tree-row[data-shell-mode="filetree"][data-row-id="' + cssEscape('doc:' + targetDocumentId) + '"]')
    : null;
  if (!parentRow && currentSourceKind() === 'local_folder' && objectKind === 'mindmap') return false;
  if (!parentRow) parentRow = document.querySelector('.tree-row[data-shell-mode="filetree"][data-row-kind="document"]');
  var root = document.querySelector('#sidebar-file-tree-root .tree-root');
  if (!root && !parentRow) return false;
  var parentLi = parentRow ? parentRow.closest('.tree-node') : null;
  var children = parentLi ? parentLi.querySelector(':scope > .tree-children') : null;
  if (parentLi && !children) {
    children = document.createElement('ul');
    children.className = 'tree-children';
    parentLi.appendChild(children);
  }
  if (children) {
    children.classList.remove('tree-children--collapsed');
    if (parentRow) {
      parentRow.setAttribute('aria-expanded', 'true');
      var toggle = parentRow.querySelector('[data-rust-action="toggle"]');
      if (toggle) toggle.setAttribute('aria-expanded', 'true');
    }
  }
  var container = children || root;
  var li = document.createElement('li');
  li.className = 'tree-node';
  var objectIdentity = {
    objectKind: objectKind || 'attachment',
    documentId: targetDocumentId || null,
    blockId: null,
    assetId: assetId
  };
  li.setAttribute('data-node-id', 'asset:' + assetId);
  var title = uploadedAssetTitle(asset);
  var iconKind = fileTreeIconKindForFileName(title) || uploadedAssetType(asset) || 'file';
  if (objectKind === 'mindmap') iconKind = 'mindmap';
  li.innerHTML =
    '<div class="tree-row" role="treeitem" aria-level="' + (parentRow ? '2' : '1') + '" aria-expanded="false" data-rust-rendered-row="filetree" data-testid="filetree-asset-row" data-row-id="' + escapeHtml('asset:' + assetId) + '" data-row-kind="asset" data-node-id="' + escapeHtml('asset:' + assetId) + '" data-document-id="' + escapeHtml(targetDocumentId) + '" data-doc-id="' + escapeHtml(targetDocumentId) + '" data-asset-id="' + escapeHtml(assetId) + '" data-object-identity="' + escapeHtml(objectIdentityAttr(objectIdentity)) + '" data-object-kind="' + escapeHtml(objectKind || 'attachment') + '" data-shell-mode="filetree" data-selected="false" data-active="false" draggable="true">' +
    '<span class="tree-spacer" aria-hidden="true"></span><span class="tree-kind-badge" data-kind="' + escapeHtml(iconKind) + '" aria-hidden="true"></span>' +
    '<button type="button" class="tree-link" data-rust-action="open" data-row-id="' + escapeHtml('asset:' + assetId) + '" data-document-id="' + escapeHtml(targetDocumentId) + '" data-asset-id="' + escapeHtml(assetId) + '"><span class="tree-link-title">' + escapeHtml(title) + '</span></button>' +
    '<div class="tree-actions"><button type="button" class="tree-action" data-testid="filetree-action-menu" data-rust-action="menu" data-row-id="' + escapeHtml('asset:' + assetId) + '" aria-label="更多操作">…</button></div></div>';
  container.appendChild(li);
  revealFileTreeRow(li.querySelector('.tree-row'));
  document.documentElement.setAttribute('data-mnote-last-upload-asset-id', assetId);
  return true;
}

function fileTreeUploadTargetFallback(detail, deps) {
  detail = detail || {};
  deps = deps || {};
  var resolveWorkspaceId = typeof deps.resolveWorkspaceId === 'function' ? deps.resolveWorkspaceId : function() { return ''; };
  var currentDocumentId = typeof deps.currentDocumentId === 'function' ? deps.currentDocumentId : function() { return ''; };
  var workspaceId = String(detail.workspaceId || resolveWorkspaceId(document.body) || '').trim();
  var documentId = String(detail.documentId || currentDocumentId() || '').trim();
  if (Object.prototype.hasOwnProperty.call(detail, 'targetRelativePath')) {
    return {
      workspaceId: workspaceId,
      targetDocumentId: documentId,
      targetMindmapId: null,
      targetSubPath: null,
      targetRelativePath: String(detail.targetRelativePath || ''),
      uploadIntent: String(detail.uploadIntent || 'filetree.folder.drop')
    };
  }
  if (!workspaceId || !documentId) {
    throw new Error('请选择一个目标页面后再拖入文件');
  }
  return {
    workspaceId: workspaceId,
    targetDocumentId: documentId,
    targetMindmapId: null,
    targetSubPath: null,
    uploadIntent: String(detail.uploadIntent || 'editor.markdown.attach')
  };
}

window.__mnoteFileTreeRuntime = {
  fileTreeRowKind: fileTreeRowKind,
  fileTreeRowDocumentId: fileTreeRowDocumentId,
  fileTreeRowAssetId: fileTreeRowAssetId,
  decodeLocalEncodedPath: decodeLocalEncodedPath,
  fileTreeRowLocalRelativePath: fileTreeRowLocalRelativePath,
  fileTreeRowLocalUploadTargetRelativePath: fileTreeRowLocalUploadTargetRelativePath,
  isFileTreeDownloadableAssetRow: isFileTreeDownloadableAssetRow,
  isFileTreeDownloadableRow: isFileTreeDownloadableRow,
  fileTreeAssetDownloadDetail: fileTreeAssetDownloadDetail,
  fileTreeRowsByRowIds: fileTreeRowsByRowIds,
  fileTreeChildCount: fileTreeChildCount,
  revealFileTreeRow: revealFileTreeRow,
  revealFileTreeAssetRow: revealFileTreeAssetRow,
  appendUploadedAssetRow: appendUploadedAssetRow,
  fileTreeUploadTargetFallback: fileTreeUploadTargetFallback
};