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Proximax P2P File Storage Java SDK (NIS1 Compatible)
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/*
 * Copyright 2018 ProximaX Limited
 *
 * 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.
 */

package io.proximax.xpx.facade.publishandsubscribe;

import org.nem.core.crypto.CryptoEngine;
import org.nem.core.crypto.CryptoEngines;

import io.proximax.xpx.exceptions.PeerConnectionNotFoundException;
import io.proximax.xpx.facade.connection.PeerConnection;
import io.proximax.xpx.service.intf.PublishAndSubscribeApi;
import io.proximax.xpx.service.intf.TransactionAndAnnounceApi;




/**
 * The Class PublishAndSubscribe.
 */

public class PublishAndSubscribe {

	/** The peer connection. */
	private PeerConnection peerConnection;

	/** The engine. */
	private CryptoEngine engine;
	
	/** The publish and subscribe api. */
	private PublishAndSubscribeApi publishAndSubscribeApi;
	
	/** The transaction and announce api. */
	private final TransactionAndAnnounceApi transactionAndAnnounceApi;
	
	/** The is local peer connection. */
	private boolean isLocalPeerConnection = false;
	
	/**
	 * Instantiates a new search.
	 *
	 * @param peerConnection            the peer connection
	 * @throws PeerConnectionNotFoundException the peer connection not found exception
	 */
	public PublishAndSubscribe(PeerConnection peerConnection) throws PeerConnectionNotFoundException {

		if (peerConnection == null) {
			throw new PeerConnectionNotFoundException("PeerConnection can't be null");
		}

		this.peerConnection = peerConnection;
		this.publishAndSubscribeApi = peerConnection.getPublishAndSubscribeApi();
		this.transactionAndAnnounceApi = peerConnection.getTransactionAndAnnounceApi();
		this.isLocalPeerConnection = peerConnection.isLocal();
		this.engine = CryptoEngines.ed25519Engine();
	}
	
	//	Local and Remote.
	/**
	 * Subscribe and listen to topic.
	 *
	 * @param topic the topic
	 */
	//	Remote needs a listener.
	public void subscribeAndListenToTopic(String topic) {
	}
	
	/**
	 * Publish topic.
	 *
	 * @param topic the topic
	 * @param initialMessage the initial message
	 * @throws Exception the exception
	 */
	public void publishTopic(String topic, String initialMessage) throws Exception {
		//	Create a NEM Txn first, store the topic name.
		
		//	Create the topic and then send the message.
		publishAndSubscribeApi.publishTopicUsingGET(topic, initialMessage);
		
	}
	
	
	//	Send to existing topic
	
	/**
	 * Send to topic.
	 *
	 * @param topic the topic
	 * @param message the message
	 * @throws Exception the exception
	 */
	public void sendToTopic(String topic, String message) throws Exception {
		publishAndSubscribeApi.sendToTopicUsingGET(topic, message);
	}
	
	/**
	 * Send to topic by proximax hash.
	 *
	 * @param nemHash the proximax hash
	 * @param message the message
	 * @throws Exception the exception
	 */
	public void sendToTopicByNemHash(String nemHash, String message) throws Exception {
		
		publishAndSubscribeApi.sendToTopicUsingGET(nemHash, message);
	}

}