package chat.server.moquette.message;

import io.netty.handler.codec.DecoderResult;
import io.netty.util.internal.StringUtil;

public class MqttMessage {

    private final MqttFixedHeader mqttFixedHeader;
    private final Object variableHeader;
    private final Object payload;
    private final DecoderResult decoderResult;

    public MqttMessage(MqttFixedHeader mqttFixedHeader) {
        this(mqttFixedHeader, null, null);
    }

    public MqttMessage(MqttFixedHeader mqttFixedHeader, Object variableHeader) {
        this(mqttFixedHeader, variableHeader, null);
    }

    public MqttMessage(MqttFixedHeader mqttFixedHeader, Object variableHeader, Object payload) {
        this(mqttFixedHeader, variableHeader, payload, DecoderResult.SUCCESS);
    }

    public MqttMessage(MqttFixedHeader mqttFixedHeader, Object variableHeader, Object payload, DecoderResult decoderResult) {
        this.mqttFixedHeader = mqttFixedHeader;
        this.variableHeader = variableHeader;
        this.payload = payload;
        this.decoderResult = decoderResult;
    }
    
	public MqttMessageType messageType() {
		return fixedHeader().messageType();
	}

    public MqttFixedHeader fixedHeader() {
        return mqttFixedHeader;
    }

    public Object variableHeader() {
        return variableHeader;
    }

    public Object payload() {
        return payload;
    }

    public DecoderResult decoderResult() {
        return decoderResult;
    }
    
    @Override
    public String toString() {
        return new StringBuilder(StringUtil.simpleClassName(this))
            .append('[')
            .append("fixedHeader=").append(fixedHeader() != null ? fixedHeader().toString() : "")
            .append(", variableHeader=").append(variableHeader() != null ? variableHeader.toString() : "")
            .append(", payload=").append(payload() != null ? payload.toString() : "")
            .append(']')
            .toString();
    }
	    
}