// By default, node:test runs with in parallel, make sure each thread gets their own database
export function getTestMongoUrl(dbName = "massive-test-models") {
  const urlString = process.env.NODE_MONGO_URL || "";
  const workerId = process.env.NODE_TEST_WORKER_ID || "1";
  // Legacy mode, when running only one worker id, keep the provided URL, otherwise append _1, _2, etc
  if (workerId === "1") {
    return urlString;
  }

  try {
    const url = new URL(urlString);
    let dbN = url.pathname.slice(1);
    if (!dbN) {
      dbN = dbName;
    }
    while (dbN.match(/-\d+$/)) {
      dbN = dbN.replace(/-\d+$/, "");
    }
    url.pathname = `/${dbN}-${workerId}`;
    return url.toString();
  } catch (e) {
    console.error("[Mocha Setup] Invalid NODE_MONGO_URL", e);
    return urlString;
  }
}

export function checkIfTestDatabase() {
  const url = getTestMongoUrl();
  if (!/massive-test/i.exec(url)) {
    console.log(`Not a test database: ${url}? Expecting database: massive-test.`);
    process.exit(1);
  }
}

checkIfTestDatabase();

export const url = getTestMongoUrl();