package chat.server.moquette.message;

import io.netty.util.internal.ObjectUtil;

public class MqttFixedHeader {
	
    private final MqttMessageType messageType;
    private final boolean isDup;
    private final MqttQoS qosLevel;
    private final boolean isRetain;
    private final int remainingLength;

    public MqttFixedHeader(MqttMessageType messageType, boolean isDup, MqttQoS qosLevel, boolean isRetain, int remainingLength) {
        this.messageType = ObjectUtil.checkNotNull(messageType, "messageType");
        this.isDup = isDup;
        this.qosLevel = ObjectUtil.checkNotNull(qosLevel, "qosLevel");
        this.isRetain = isRetain;
        this.remainingLength = remainingLength;
    }

    public MqttMessageType messageType() {
        return messageType;
    }

    public boolean isDup() {
        return isDup;
    }

    public MqttQoS qosLevel() {
        return qosLevel;
    }

    public boolean isRetain() {
        return isRetain;
    }

    public int remainingLength() {
        return remainingLength;
    }

    @Override
    public String toString() {
    	StringBuilder result = new StringBuilder();
    	
    	result.append(this.getClass().getSimpleName());
    	result.append('[');
    	result.append("messageType=").append(messageType);
    	result.append(", isDup=").append(isDup);
    	result.append(", qosLevel=").append(qosLevel);
    	result.append(", isRetain=").append(isRetain);
    	result.append(", remainingLength=").append(remainingLength);
    	result.append(']');
    	
        return result.toString();
    }
}