package com.bulpros.javaknigths;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;
import java.io.StringReader;

public class XmlToJson implements Marshaller {

    private Class typeParameterClass;

    public XmlToJson(Class typeParameterClass) {
        this.typeParameterClass = typeParameterClass;
    }

    @Override
    public Object read(String text) {
        Object item = new Object();
        try {
            JAXBContext context = JAXBContext.newInstance(typeParameterClass);
            Unmarshaller unmarshaller = context.createUnmarshaller();
            StringReader reader = new StringReader(text);
            item = unmarshaller.unmarshal(reader);
        } catch (JAXBException e) {
            e.printStackTrace();
        }
        return item;
    }

    @Override
    public String write(Object item) {
        ObjectMapper objectMapper = new ObjectMapper();
        String itemString = "";
        try {
            itemString = objectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(item);
        } catch (JsonProcessingException e) {
            e.printStackTrace();
        }
        return itemString;
    }

    public String xmlToJson(String text) {
        return write(read(text));
    }
}