import { expect, it } from "bun:test";
import { jwt } from "../jwt";

it("encodes and decodes a jwt token", async () => {
  const secret = "secret";
  const payload = { hello: "world" };

  const token = await jwt.encode({ payload, secret });
  const decoded = await jwt.decode({ token, secret });

  expect(decoded).toEqual({
    valid: true,
    header: jwt.DEFAULT_HEADER,
    payload,
  });
});

it("sets valid to false if the signature is invalid", async () => {
  const secret = "secret";
  const payload = { hello: "world" };

  const token = await jwt.encode({ payload, secret });
  const decoded = await jwt.decode({ token, secret: "wrong" });

  expect(decoded).toEqual({
    valid: false,
    header: jwt.DEFAULT_HEADER,
    payload,
  });
});

it(`sets valid to false if secret isn't passed`, async () => {
  const secret = "secret";
  const payload = { hello: "world" };

  const token = await jwt.encode({ payload, secret });
  const decoded = await jwt.decode({ token });

  expect(decoded).toEqual({
    valid: false,
    header: jwt.DEFAULT_HEADER,
    payload,
  });
});

it("throws an error if the token is invalid", async () => {
  await expect(
    jwt.decode({ token: "invalid", secret: "secret" })
  ).rejects.toThrow(jwt.ERROR.INVALID_JWT_FORMAT);
});