import { createHash } from "crypto";
import { describe, expect, test } from "vitest";
import { buildSignedRequest, dreameSign, stringifyBody } from "../app/services/signature.server";

describe("dreame signature", () => {
  test("generates stable 32-char lowercase md5", () => {
    const bodyString = '{"activity_id":12}';
    const timestamp = "1776901800000";
    const secret = "abc123secret";
    const expected = createHash("md5")
      .update(Buffer.from(`${bodyString}${timestamp}${secret}`, "utf8"))
      .digest("hex");

    const sign = dreameSign(bodyString, timestamp, secret);

    expect(sign).toBe(expected);
    expect(sign).toMatch(/^[a-f0-9]{32}$/);
  });

  test("uses the same serialized body for signing and fetch", () => {
    const payload = { activity_id: 12 };
    const bodyString = stringifyBody(payload);
    const signed = buildSignedRequest(payload, {
      apiAppId: "app-id",
      apiSecret: "secret",
      timestamp: "1776901800000",
    });

    expect(signed.bodyString).toBe(bodyString);
    expect(signed.bodyString).toBe('{"activity_id":12}');
    expect(signed.headers["dreame-api-sign"]).toBe(
      dreameSign(bodyString, "1776901800000", "secret"),
    );
  });
});