/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @format
 */

export function parseFlipperPorts(
  envVar: string,
): {insecure: number; secure: number} | undefined {
  const components = envVar.split(',');
  const ports = components.map((x) => parseInt(x, 10));

  // Malformed numbers will get parsed to NaN which is not > 0
  if (
    ports.length === 2 &&
    components.every((x) => /^\d+$/.test(x)) &&
    ports.every((x) => x > 0)
  ) {
    return {
      insecure: ports[0],
      secure: ports[1],
    };
  }
}

export function parseEnvironmentVariableAsNumber(
  envVarName: string,
  defaultValue?: number,
): number | undefined {
  const envVarAsString = process.env[envVarName];
  if (envVarAsString) {
    const parsedInt = parseInt(envVarAsString, 10);
    return isNaN(parsedInt) ? defaultValue : parsedInt;
  }
  return defaultValue;
}