const forge = require('node-forge');

function APNKey(key) {
  if (!key || !key.n || !key.e) {
    throw new Error('key is not a valid public key');
  }

  this._key = key;
}

APNKey.prototype.fingerprint = function () {
  return forge.pki.getPublicKeyFingerprint(this._key, { encoding: 'hex' });
};

module.exports = APNKey;