feat(components/tree): add concrete impl for filesystem nodes

Signed-off-by: Braden Mars <[email protected]>

src/components/tree/filesystem.ts

@@ -0,0 +1,36 @@
+import { Tree, type TreeVisitor, TreeNode } from './node';
+import type { CCUFileItem } from '@/models/types';
+
+abstract class FileSystemNode<T> extends TreeNode<T> {
+  constructor(
+    public value: T,
+    public parent?: FileSystemNode<T> | undefined,
+  ) {
+    super(value, parent);
+  }
+
+  get path(): string {
+    return (this.parent ? [this.parent.name, this.name] : [this.name]).join(
+      '/',
+    );
+  }
+
+  abstract get name(): string;
+
+  traverse(visitor: TreeVisitor<T>) {
+    visitor(this);
+    for (const child of this.children) child.traverse(visitor);
+  }
+}
+
+export class FolderNode extends FileSystemNode<string> {
+  get name(): string {
+    return this.value;
+  }
+}
+
+export class FileNode<T extends CCUFileItem> extends FileSystemNode<T> {
+  get name(): string {
+    return this.value.filename_original;
+  }
+}