import { describe, expect, test } from "bun:test";
import { READY_STATE } from "@tensamin/ttp-core";
import { TAuthClient, generateKeyPair, getFriendlyReadyState } from "../src/index";

describe("index helpers", () => {
  test("generateKeyPair returns base64 keys with expected length", () => {
    const pair = generateKeyPair();
    const priv = Buffer.from(pair.private, "base64");
    const pub = Buffer.from(pair.public, "base64");

    expect(priv.length).toBe(56);
    expect(pub.length).toBe(56);
  });

  test("getFriendlyReadyState maps numeric state to key", () => {
    for (const [name, value] of Object.entries(READY_STATE)) {
      expect(getFriendlyReadyState(value)).toBe(name);
    }
  });

  test("generateLink builds auth URL with and without challenge", () => {
    const client = Object.create(TAuthClient.prototype) as TAuthClient;
    client.frontendUrl = "https://tauth.example.com/login";
    client.identifier = "my-app";
    client.redirectUrl = new URL("https://app.example.com/callback");

    const withoutChallenge = client.generateLink();
    const withChallenge = client.generateLink("abcdef");

    const parsedWithout = new URL(withoutChallenge);
    const parsedWith = new URL(withChallenge);

    expect(parsedWithout.searchParams.get("identifier")).toBe("my-app");
    expect(parsedWithout.searchParams.get("redirect")).toBe(
      "https://app.example.com/callback",
    );
    expect(parsedWith.searchParams.get("challenge")).toBe("abcdef");
  });
});