Refactor Settings, FileTree, GitPanel, Shell, and CodeEditor components (#402)

src/components/file-tree/hooks/useFileTreeSearch.ts

@@ -0,0 +1,42 @@
+import { useEffect, useState } from 'react';
+import { collectExpandedDirectoryPaths, filterFileTree } from '../utils/fileTreeUtils';
+import type { FileTreeNode } from '../types/types';
+
+type UseFileTreeSearchArgs = {
+  files: FileTreeNode[];
+  expandDirectories: (paths: string[]) => void;
+};
+
+type UseFileTreeSearchResult = {
+  searchQuery: string;
+  setSearchQuery: (query: string) => void;
+  filteredFiles: FileTreeNode[];
+};
+
+export function useFileTreeSearch({
+  files,
+  expandDirectories,
+}: UseFileTreeSearchArgs): UseFileTreeSearchResult {
+  const [searchQuery, setSearchQuery] = useState('');
+  const [filteredFiles, setFilteredFiles] = useState<FileTreeNode[]>(files);
+
+  useEffect(() => {
+    const query = searchQuery.trim().toLowerCase();
+
+    if (!query) {
+      setFilteredFiles(files);
+      return;
+    }
+
+    const filtered = filterFileTree(files, query);
+    setFilteredFiles(filtered);
+    // Keep search results visible by opening every matching ancestor directory once per query update.
+    expandDirectories(collectExpandedDirectoryPaths(filtered));
+  }, [files, searchQuery, expandDirectories]);
+
+  return {
+    searchQuery,
+    setSearchQuery,
+    filteredFiles,
+  };
+}