import type { EntityResponse, InventoryTreeNode, ListResponse, NodeContext } from '../types/inventory';

async function handleResponse<T>(response: Response): Promise<T> {
  if (!response.ok) {
    throw new Error(`API error: ${response.status}`);
  }
  return response.json() as Promise<T>;
}

export async function fetchInventoryTree(): Promise<InventoryTreeNode[]> {
  const response = await fetch('/api/inventory/tree');
  const data = await handleResponse<ListResponse<InventoryTreeNode>>(response);
  return data.items;
}

export async function fetchNodeContext(id: string): Promise<NodeContext> {
  const response = await fetch(`/api/inventory/nodes/${id}/context`);
  const data = await handleResponse<EntityResponse<NodeContext>>(response);
  return data.item;
}