// SaveMyToken local lab. Run with Node.js 22 or newer.
import assert from "node:assert/strict";

let calls = 0;
const tools = new Map([["lookup_policy", ({ category }) => {
  calls++;
  return category === "returns" ? "Unused items: 30 days." : "Delivery: 3 to 5 working days.";
}]]);
function dispatch(name, args) {
  if (!tools.has(name)) throw new Error("Unknown tool");
  if (!args || typeof args !== "object" || Array.isArray(args)
    || Object.keys(args).length !== 1
    || !["returns", "delivery"].includes(args.category)) throw new Error("Invalid arguments");
  return tools.get(name)(args);
}
assert.throws(() => dispatch("delete_data", {}), /Unknown tool/);
assert.throws(() => dispatch("lookup_policy", { category: "returns", admin: true }), /Invalid arguments/);
assert.equal(calls, 0);
console.log(dispatch("lookup_policy", { category: "returns" }));
console.log("Executed tool calls:", calls);
assert.equal(calls, 1);