jnidzwetzki/bitfinex-v2-wss-api-java

/*******************************************************************************
 *
 *    Copyright (C) 2015-2018 Jan Kristof Nidzwetzki
 *  
 *    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 com.github.jnidzwetzki.bitfinex.v2.command;

import java.util.Collection;

import org.json.JSONObject;

import com.github.jnidzwetzki.bitfinex.v2.BitfinexConnectionFeature;
import com.github.jnidzwetzki.bitfinex.v2.BitfinexWebsocketClient;

public class SetConnectionFeaturesCommand implements BitfinexCommand {

    /**
     * The active features
     */
    private Collection<BitfinexConnectionFeature> features;

    public SetConnectionFeaturesCommand(final Collection<BitfinexConnectionFeature> features) {
        this.features = features;
    }
    
    @Override
    public String getCommand(final BitfinexWebsocketClient client) {
        
        // XOR all features
        int featureFlags = 0;
        for(final BitfinexConnectionFeature feature : features) {
            featureFlags = featureFlags ^ feature.getFeatureFlag();
        }
        
        final JSONObject subscribeJson = new JSONObject();
        subscribeJson.put("event", "conf");
        subscribeJson.put("flags", featureFlags);
        return subscribeJson.toString();
    }

}