// 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 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,
  fileTreeUploadTargetFallback: fileTreeUploadTargetFallback
};