/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.fineract.cn.anubis;

import org.apache.fineract.cn.anubis.api.v1.client.Anubis;
import org.apache.fineract.cn.anubis.api.v1.domain.ApplicationSignatureSet;
import org.apache.fineract.cn.anubis.api.v1.domain.Signature;
import org.apache.fineract.cn.api.context.AutoSeshat;
import org.apache.fineract.cn.api.util.NotFoundException;
import org.apache.fineract.cn.lang.security.RsaKeyPairFactory;
import org.junit.Assert;
import org.junit.Test;

import java.util.List;

/**
 * @author Myrle Krantz
 */
public class TestAnubisKeyRotation extends AbstractSimpleTest {
  @Test
  public void testKeyRotation()
  {
    final Anubis anubis = tenantApplicationSecurityEnvironment.getAnubis();

    final String systemToken = tenantApplicationSecurityEnvironment.getSystemSecurityEnvironment().systemToken(APP_NAME);

    try (final AutoSeshat ignored1 = new AutoSeshat(systemToken)) {
      //Create a signature set then test that it is listed.
      final RsaKeyPairFactory.KeyPairHolder identityManagerKeyPair = RsaKeyPairFactory.createKeyPair();
      final Signature identityManagerSignature = new Signature(identityManagerKeyPair.getPublicKeyMod(), identityManagerKeyPair.getPublicKeyExp());

      anubis.createSignatureSet(identityManagerKeyPair.getTimestamp(), identityManagerSignature);
      {
        final List<String> signatureSets = anubis.getAllSignatureSets();
        Assert.assertTrue(signatureSets.contains(identityManagerKeyPair.getTimestamp()));
      }

      //Get the newly created signature set, and test that its contents are correct.
      final ApplicationSignatureSet signatureSet = anubis.getSignatureSet(identityManagerKeyPair.getTimestamp());
      Assert.assertEquals(identityManagerSignature, signatureSet.getIdentityManagerSignature());

      //Get just the application signature, and test that its contents match the results of the whole signature set.
      final Signature applicationSignature = anubis.getApplicationSignature(identityManagerKeyPair.getTimestamp());
      Assert.assertEquals(signatureSet.getApplicationSignature(), applicationSignature);

      //Create a second signature set and test that it and the previous signature set are listed.
      final RsaKeyPairFactory.KeyPairHolder identityManagerKeyPair2 = RsaKeyPairFactory.createKeyPair();
      final Signature identityManagerSignature2 = new Signature(identityManagerKeyPair2.getPublicKeyMod(), identityManagerKeyPair2.getPublicKeyExp());

      anubis.createSignatureSet(identityManagerKeyPair2.getTimestamp(), identityManagerSignature2);
      {
        final List<String> signatureSets = anubis.getAllSignatureSets();
        Assert.assertTrue(signatureSets.contains(identityManagerKeyPair.getTimestamp()));
        Assert.assertTrue(signatureSets.contains(identityManagerKeyPair2.getTimestamp()));
      }
      final ApplicationSignatureSet latestSignatureSet = anubis.getLatestSignatureSet();
      Assert.assertEquals(identityManagerKeyPair2.getTimestamp(), latestSignatureSet.getTimestamp());

      final Signature latestApplicationSignature = anubis.getLatestApplicationSignature();
      Assert.assertEquals(latestSignatureSet.getApplicationSignature(), latestApplicationSignature);

      //Get the newly created signature set, and test that it's contents are correct.
      final ApplicationSignatureSet signatureSet2 = anubis.getSignatureSet(identityManagerKeyPair2.getTimestamp());
      Assert.assertEquals(identityManagerSignature2, signatureSet2.getIdentityManagerSignature());

      //Delete one of the signature sets and test that it is no longer listed.
      anubis.deleteSignatureSet(identityManagerKeyPair.getTimestamp());
      {
        final List<String> signatureSets = anubis.getAllSignatureSets();
        Assert.assertFalse(signatureSets.contains(identityManagerKeyPair.getTimestamp()));
      }

      //Getting the newly deleted signature set should fail.
      try {
        anubis.getSignatureSet(identityManagerKeyPair.getTimestamp());
        Assert.fail("Not found exception should be thrown.");
      } catch (final NotFoundException ignored) {
      }

      //Getting the newly deleted application signature set should likewise fail.
      try {
        anubis.getApplicationSignature(identityManagerKeyPair.getTimestamp());
        Assert.fail("Not found exception should be thrown.");
      } catch (final NotFoundException ignored) {
      }
    }
  }
}