/*
 * Copyright 2002-2018 the original author or authors.
 *
 * Licensed 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
 *
 *      https://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 example;

import java.security.KeyStore;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLHandshakeException;

import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContexts;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import org.springframework.core.io.ClassPathResource;
import org.springframework.http.ResponseEntity;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatCode;

/**
 * Test the Hello World application.
 *
 * @author Michael Simons
 */
public class X509Tests {

	private int port;

	@BeforeEach
	void setup() {
		this.port = Integer.parseInt(System.getProperty("app.httpPort", "8443"));
	}

	@Test
	void notCertificateThenSslHandshakeException() {
		RestTemplate rest = new RestTemplate();
		assertThatCode(() -> rest.getForEntity("https://localhost:8443/", String.class))
				.hasCauseInstanceOf(SSLHandshakeException.class);
	}

	@Test
	void certificateThenStatusOk() throws Exception {
		ClassPathResource serverKeystore = new ClassPathResource("/certs/server.p12");
		KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
		keyStore.load(serverKeystore.getInputStream(), "password".toCharArray());
		// @formatter:off
		SSLContext sslContext = SSLContexts.custom()
				.loadKeyMaterial(keyStore, "password".toCharArray(), (aliases, socket) -> "client")
				.loadTrustMaterial(keyStore, null)
				.build();

		SSLConnectionSocketFactory socketFactory = new SSLConnectionSocketFactory(sslContext,
				new String[]{"TLSv1.2", "TLSv1.1"},
				null,
				SSLConnectionSocketFactory.getDefaultHostnameVerifier());
		// @formatter:on

		CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(socketFactory).build();
		ClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory(httpClient);
		RestTemplate rest = new RestTemplate(requestFactory);
		ResponseEntity<String> responseEntity = rest.getForEntity("https://localhost:8443/me", String.class);
		assertThat(responseEntity).extracting((result) -> result.getStatusCode().is2xxSuccessful()).isEqualTo(true);
	}

}