import Color from "color";
import { MessageTypes } from "../../src/common";
import { packers, unpackers } from "../../src/mapping";

const KEY = new Uint8Array([
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
  0x0d, 0x0e, 0x0f,
]);

test("Create a user data response (0x0003) packet.", () => {
  // Given
  const username = "Butlersaurus";
  const colour = Color("#FF4000");
  const clientId = "Mercury";

  // When
  const packedPacket = packers[MessageTypes.UserDataResponse](
    {
      username: username,
      colour: colour,
      clientId: clientId,
    },
    KEY,
  );

  // Then
  // We can't check the contents of the data as it's encrypted with a random nonce.
  // Check the message type and length.
  expect(packedPacket.slice(0, 4)).toMatchObject(
    new Uint8Array([0x00, 0x03, 0x00, 0x67]),
  );

  // Check the total length is as expected.
  expect(packedPacket.length).toBe(107);
});

test("Parse a user data response (0x0003).", () => {
  // Given
  const data = new Uint8Array([
    0, 12, 66, 117, 116, 108, 101, 114, 115, 97, 117, 114, 117, 115, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 64, 0, 0, 7, 77, 101,
    114, 99, 117, 114, 121, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
  ]);
  const username = "Butlersaurus";
  const colour = Color("#FF4000");
  const clientId = "Mercury";

  // When
  const unpackedPacket = unpackers[MessageTypes.UserDataResponse](data);

  // Then
  expect(unpackedPacket.username).toBe(username);
  expect(unpackedPacket.colour).toMatchObject(colour);
  expect(unpackedPacket.clientId).toBe(clientId);
});