/*-
 * ============LICENSE_START=======================================================
 * VID
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * 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
 * 
 *      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.
 * ============LICENSE_END=========================================================
 */

package org.openecomp.aai.util;


import java.io.FileInputStream;
import java.security.KeyManagementException;
import java.security.KeyStore;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;

import org.eclipse.jetty.util.security.Password;
import org.glassfish.jersey.client.ClientConfig;
import org.glassfish.jersey.client.HttpUrlConnectorProvider;
import org.openecomp.portalsdk.core.logging.logic.EELFLoggerDelegate;
import org.openecomp.portalsdk.core.util.SystemProperties;
/**
 * The Class HttpsAuthClient.
 */
public class HttpsAuthClient{
	/** The logger. */
	static EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(HttpsAuthClient.class);
	
	/**
	 * Gets the client.
	 *
	 * @param certFilePath the cert file path
	 * @return the client
	 * @throws KeyManagementException the key management exception
	 */
	public static Client getClient(String certFilePath) throws KeyManagementException {

		ClientConfig config = new ClientConfig();
		//config.getFeatures().put(JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE);
		//config.getClasses().add(org.openecomp.aai.util.CustomJacksonJaxBJsonProvider.class);

		try {
			
		    config.property(HttpUrlConnectorProvider.SET_METHOD_WORKAROUND, Boolean.TRUE );
			
			config.connectorProvider(new HttpUrlConnectorProvider().useSetMethodWorkaround());
			String truststore_path = certFilePath + AAIProperties.FILESEPARTOR + SystemProperties.getProperty(AAIProperties.AAI_TRUSTSTORE_FILENAME);
			String truststore_password = SystemProperties.getProperty(AAIProperties.AAI_TRUSTSTORE_PASSWD_X);
			String decrypted_truststore_password = Password.deobfuscate(truststore_password);
			
			boolean useClientCert = false;
			
			String keystore_path = certFilePath + AAIProperties.FILESEPARTOR + SystemProperties.getProperty(AAIProperties.AAI_KEYSTORE_FILENAME);
			String keystore_password = SystemProperties.getProperty(AAIProperties.AAI_KEYSTORE_PASSWD_X);
			String decrypted_keystore_password = Password.deobfuscate(keystore_password);
			
			String clientCert = SystemProperties.getProperty(AAIProperties.AAI_USE_CLIENT_CERT);
			
			if (clientCert != null && 
					SystemProperties.getProperty(AAIProperties.AAI_USE_CLIENT_CERT).equalsIgnoreCase("true")) {
				useClientCert = true;
			}
			
  		    System.setProperty("javax.net.ssl.trustStore", truststore_path);
		    System.setProperty("javax.net.ssl.trustStorePassword", decrypted_truststore_password);
			HttpsURLConnection.setDefaultHostnameVerifier( new HostnameVerifier(){
			    public boolean verify(String string,SSLSession ssls) {
			        return true;
			    }
			});
	
			final SSLContext ctx = SSLContext.getInstance("TLS");
			
			KeyManagerFactory kmf = null;
			if (useClientCert) {
			
				try {
					kmf = KeyManagerFactory.getInstance("SunX509");
					FileInputStream fin = new FileInputStream(keystore_path);
					KeyStore ks = KeyStore.getInstance("PKCS12");
					char[] pwd = decrypted_keystore_password.toCharArray();
					ks.load(fin, pwd);
					kmf.init(ks, pwd);
				} catch (Exception e) {
					//System.out.println("Error setting up kmf: exiting");
					logger.debug(EELFLoggerDelegate.debugLogger, "Error setting up kmf: exiting");
					e.printStackTrace();
					return null;
				}
				ctx.init(kmf.getKeyManagers(), null, null);
			
				return ClientBuilder.newBuilder()
						.sslContext(ctx)
						.hostnameVerifier(new HostnameVerifier() {
							@Override
							public boolean verify( String s, SSLSession sslSession ) {
								return true;
							}
						}).withConfig(config)
						.build()
						.register(org.openecomp.aai.util.CustomJacksonJaxBJsonProvider.class);
			} else { 
				return ClientBuilder.newBuilder()
						.hostnameVerifier(new HostnameVerifier() {
							@Override
							public boolean verify( String s, SSLSession sslSession ) {
								return true;
							}
						}).withConfig(config)
						.build()
						.register(org.openecomp.aai.util.CustomJacksonJaxBJsonProvider.class);
			}
		} catch (Exception e) {
			logger.debug(EELFLoggerDelegate.debugLogger, "Error setting up config: exiting");
			//System.out.println("Error setting up config: exiting");
			e.printStackTrace();
			System.exit(1);
			return null;
		}
	}
}