/*
 * Copyright (c) 2013, 2020 Oracle and/or its affiliates and others.
 * All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package com.sun.ts.tests.websocket.ee.jakarta.websocket.server.serverendpointconfig.configurator;

import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

import com.sun.ts.tests.websocket.common.util.IOUtil;
import com.sun.ts.tests.websocket.common.util.StringUtil;

import jakarta.websocket.Endpoint;
import jakarta.websocket.EndpointConfig;
import jakarta.websocket.MessageHandler;
import jakarta.websocket.Session;
import jakarta.websocket.server.ServerEndpointConfig;

public class WSCSubprotocolServer extends Endpoint implements MessageHandler.Whole<String> {

	Session session;

	ServerEndpointConfig config;

	@Override
	public void onMessage(String msg) {
		List<String> ret = null;
		boolean contains = false;
		if (msg.equals("requested")) {
			contains = StringUtil.contains(GetNegotiatedSubprotocolConfigurator.getRequested(),
					getRequestedSubprotocols());
			ret = contains ? getRequestedSubprotocols() : GetNegotiatedSubprotocolConfigurator.getRequested();
		} else if (msg.equals("supported")) {
			List<String> subprotocols = config.getSubprotocols();
			contains = StringUtil.contains(GetNegotiatedSubprotocolConfigurator.getSupported(), subprotocols);
			ret = contains ? subprotocols : GetNegotiatedSubprotocolConfigurator.getSupported();
		} else if (msg.equals("resulted")) {
			ret = Collections.singletonList("{" + GetNegotiatedSubprotocolConfigurator.getResulted() + "}");
		}
		try {
			session.getBasicRemote().sendText(StringUtil.collectionToString(ret));
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	@Override
	public void onOpen(Session session, EndpointConfig config) {
		this.session = session;
		this.config = (ServerEndpointConfig) config;
		session.addMessageHandler(this);
	}

	@Override
	public void onError(Session session, Throwable thr) {
		thr.printStackTrace(); // Write to error log, too
		String message = IOUtil.printStackTrace(thr);
		try {
			session.getBasicRemote().sendText(message);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public static List<String> getRequestedSubprotocols() {
		return Arrays.asList(StringUtil.WEBSOCKET_SUBPROTOCOLS[0], StringUtil.WEBSOCKET_SUBPROTOCOLS[2],
				StringUtil.WEBSOCKET_SUBPROTOCOLS[4]);
	}

	public static List<String> getSupportedSubprotocols() {
		return Arrays.asList(StringUtil.WEBSOCKET_SUBPROTOCOLS[1], StringUtil.WEBSOCKET_SUBPROTOCOLS[3],
				StringUtil.WEBSOCKET_SUBPROTOCOLS[5], StringUtil.WEBSOCKET_SUBPROTOCOLS[4],
				StringUtil.WEBSOCKET_SUBPROTOCOLS[2]);
	}

}
