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package org.phoebus.applications.alarm.messages;

import java.util.Map;

import org.apache.kafka.common.errors.SerializationException;
import org.apache.kafka.common.serialization.Deserializer;
import org.apache.kafka.common.serialization.Serializer;
import org.phoebus.applications.alarm.model.EnabledState;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;

/** XML Message parser */
public class MessageParser implements Serializer, Deserializer {

    private ObjectMapper objectMapper = new ObjectMapper();
    private Class tClass;

    /**
     * Create a message parser for type tClass
     *
     * @param tClass Class
     */
    public MessageParser(Class tClass) {
        this.tClass = tClass;
        SimpleModule simple_module = new SimpleModule();
        simple_module.addSerializer(EnabledState.class, new EnabledSerializer());
        simple_module.addDeserializer(EnabledState.class, new EnabledDeserializer());
        objectMapper.registerModule(simple_module);
    }

    @Override
    public void close() {
        // TODO Auto-generated method stub

    }

    @Override
    public void configure(Map arg0, boolean arg1) {
    }

    @Override
    public byte[] serialize(String topic, T message) {
        if (message == null)
            return null;

        try {
            return objectMapper.writeValueAsBytes(message);
        } catch (Exception e) {
            throw new SerializationException("Error serializing message ", e);
        }
    }

    @Override
    public T deserialize(String arg0, byte[] bytes) {
        if (bytes == null)
            return null;

        T data;
        try {
            data = objectMapper.readValue(bytes, tClass);
        } catch (Exception e) {
            throw new SerializationException(e);
        }

        return data;
    }

}