/*
 * 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
 *
 *      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.
 */

module hunt.stomp.simp.config.StompBrokerRelayRegistration;

import hunt.stomp.simp.broker.AbstractBrokerMessageHandler;
import hunt.stomp.simp.config.AbstractBrokerRegistration;
import hunt.stomp.simp.stomp.StompBrokerRelayMessageHandler;
import hunt.stomp.MessageChannel;
// import hunt.stomp.tcp.TcpOperations;

import hunt.Exceptions;

import std.array;

/**
 * Registration class for configuring a {@link StompBrokerRelayMessageHandler}.
 *
 * @author Rossen Stoyanchev
 * @since 4.0
 */
class StompBrokerRelayRegistration : AbstractBrokerRegistration {

	private string relayHost = "127.0.0.1";

	private int relayPort = 61613;

	private string clientLogin = "guest";

	private string clientPasscode = "guest";

	private string systemLogin = "guest";

	private string systemPasscode = "guest";

	private long systemHeartbeatSendInterval;

	private long systemHeartbeatReceiveInterval;

	private string virtualHost;

	
	// private TcpOperations!(byte[]) tcpClient;

	private bool autoStartup = true;

	
	private string userDestinationBroadcast;

	
	private string userRegistryBroadcast;


	this(SubscribableChannel clientInboundChannel,
			MessageChannel clientOutboundChannel, string[] destinationPrefixes) {

		super(clientInboundChannel, clientOutboundChannel, destinationPrefixes);
	}


	/**
	 * Set the STOMP message broker host.
	 */
	StompBrokerRelayRegistration setRelayHost(string relayHost) {
		assert(!relayHost.empty(), "relayHost must not be empty");
		this.relayHost = relayHost;
		return this;
	}

	/**
	 * Set the STOMP message broker port.
	 */
	StompBrokerRelayRegistration setRelayPort(int relayPort) {
		this.relayPort = relayPort;
		return this;
	}

	/**
	 * Set the login to use when creating connections to the STOMP broker on
	 * behalf of connected clients.
	 * <p>By default this is set to "guest".
	 */
	StompBrokerRelayRegistration setClientLogin(string login) {
		assert(!login.empty(), "clientLogin must not be empty");
		this.clientLogin = login;
		return this;
	}

	/**
	 * Set the passcode to use when creating connections to the STOMP broker on
	 * behalf of connected clients.
	 * <p>By default this is set to "guest".
	 */
	StompBrokerRelayRegistration setClientPasscode(string passcode) {
		assert(!passcode.empty(), "clientPasscode must not be empty");
		this.clientPasscode = passcode;
		return this;
	}

	/**
	 * Set the login for the shared "system" connection used to send messages to
	 * the STOMP broker from within the application, i.e. messages not associated
	 * with a specific client session (e.g. REST/HTTP request handling method).
	 * <p>By default this is set to "guest".
	 */
	StompBrokerRelayRegistration setSystemLogin(string login) {
		assert(!login.empty(), "systemLogin must not be empty");
		this.systemLogin = login;
		return this;
	}

	/**
	 * Set the passcode for the shared "system" connection used to send messages to
	 * the STOMP broker from within the application, i.e. messages not associated
	 * with a specific client session (e.g. REST/HTTP request handling method).
	 * <p>By default this is set to "guest".
	 */
	StompBrokerRelayRegistration setSystemPasscode(string passcode) {
		assert(!passcode.empty(), "systemPasscode must not be empty");
		this.systemPasscode = passcode;
		return this;
	}

	/**
	 * Set the interval, in milliseconds, at which the "system" relay session will,
	 * in the absence of any other data being sent, send a heartbeat to the STOMP broker.
	 * A value of zero will prevent heartbeats from being sent to the broker.
	 * <p>The default value is 10000.
	 */
	StompBrokerRelayRegistration setSystemHeartbeatSendInterval(long systemHeartbeatSendInterval) {
		this.systemHeartbeatSendInterval = systemHeartbeatSendInterval;
		return this;
	}

	/**
	 * Set the maximum interval, in milliseconds, at which the "system" relay session
	 * expects, in the absence of any other data, to receive a heartbeat from the STOMP
	 * broker. A value of zero will configure the relay session to expect not to receive
	 * heartbeats from the broker.
	 * <p>The default value is 10000.
	 */
	StompBrokerRelayRegistration setSystemHeartbeatReceiveInterval(long heartbeatReceiveInterval) {
		this.systemHeartbeatReceiveInterval = heartbeatReceiveInterval;
		return this;
	}

	/**
	 * Set the value of the "host" header to use in STOMP CONNECT frames. When this
	 * property is configured, a "host" header will be added to every STOMP frame sent to
	 * the STOMP broker. This may be useful for example in a cloud environment where the
	 * actual host to which the TCP connection is established is different from the host
	 * providing the cloud-based STOMP service.
	 * <p>By default this property is not set.
	 */
	StompBrokerRelayRegistration setVirtualHost(string virtualHost) {
		this.virtualHost = virtualHost;
		return this;
	}

	/**
	 * Configure a TCP client for managing TCP connections to the STOMP broker.
	 * <p>By default {@code ReactorNettyTcpClient} is used.
	 * <p><strong>Note:</strong> when this property is used, any
	 * {@link #setRelayHost(string) host} or {@link #setRelayPort(int) port}
	 * specified are effectively ignored.
	 * @since 4.3.15
	 */
	// void setTcpClient(TcpOperations!(byte[]) tcpClient) {
	// 	this.tcpClient = tcpClient;
	// }

	/**
	 * Configure whether the {@link StompBrokerRelayMessageHandler} should start
	 * automatically when the Spring ApplicationContext is refreshed.
	 * <p>The default setting is {@code true}.
	 */
	StompBrokerRelayRegistration setAutoStartup(bool autoStartup) {
		this.autoStartup = autoStartup;
		return this;
	}

	/**
	 * Set a destination to broadcast messages to user destinations that remain
	 * unresolved because the user appears not to be connected. In a
	 * multi-application server scenario this gives other application servers
	 * a chance to try.
	 * <p>By default this is not set.
	 * @param destination the destination to broadcast unresolved messages to,
	 * e.g. "/topic/unresolved-user-destination"
	 */
	StompBrokerRelayRegistration setUserDestinationBroadcast(string destination) {
		this.userDestinationBroadcast = destination;
		return this;
	}

	
	string getUserDestinationBroadcast() {
		return this.userDestinationBroadcast;
	}

	/**
	 * Set a destination to broadcast the content of the local user registry to
	 * and to listen for such broadcasts from other servers. In a multi-application
	 * server scenarios this allows each server's user registry to be aware of
	 * users connected to other servers.
	 * <p>By default this is not set.
	 * @param destination the destination for broadcasting user registry details,
	 * e.g. "/topic/simp-user-registry".
	 */
	StompBrokerRelayRegistration setUserRegistryBroadcast(string destination) {
		this.userRegistryBroadcast = destination;
		return this;
	}

	
	string getUserRegistryBroadcast() {
		return this.userRegistryBroadcast;
	}

	override
	protected AbstractBrokerMessageHandler getMessageHandler(SubscribableChannel brokerChannel) {

	// 	StompBrokerRelayMessageHandler handler = new StompBrokerRelayMessageHandler(
	// 			getClientInboundChannel(), getClientOutboundChannel(),
	// 			brokerChannel, getDestinationPrefixes());

	// 	handler.setRelayHost(this.relayHost);
	// 	handler.setRelayPort(this.relayPort);

	// 	handler.setClientLogin(this.clientLogin);
	// 	handler.setClientPasscode(this.clientPasscode);

	// 	handler.setSystemLogin(this.systemLogin);
	// 	handler.setSystemPasscode(this.systemPasscode);

	// 	if (this.systemHeartbeatSendInterval !is null) {
	// 		handler.setSystemHeartbeatSendInterval(this.systemHeartbeatSendInterval);
	// 	}
	// 	if (this.systemHeartbeatReceiveInterval !is null) {
	// 		handler.setSystemHeartbeatReceiveInterval(this.systemHeartbeatReceiveInterval);
	// 	}
	// 	if (this.virtualHost !is null) {
	// 		handler.setVirtualHost(this.virtualHost);
	// 	}
	// 	// if (this.tcpClient !is null) {
	// 	// 	handler.setTcpClient(this.tcpClient);
	// 	// }

	// 	handler.setAutoStartup(this.autoStartup);

	// 	return handler;
		implementationMissing(false);
		return null;
	}

}