import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.convert.ConverterException;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import com.jedlab.framework.spring.SpringUtil;
import com.webportal.app.domain.TagEntity;
import com.webportal.app.service.TagService;

/**
 * @author Omid Pourhadi
 *
 */
@Component("tagConverter")
public class TagConverter implements Converter
{

    @Autowired
    TagService tagService;



    @Override
    public Object getAsObject(FacesContext context, UIComponent component, String value)
    {
        if (value == null || value.trim().equals("") || value.equals(SpringUtil.getMessage("Please_Select", null)))
        {
            return null;
        }
        else
        {
            try
            {
                Long tagId = Long.valueOf(value);
                return tagService.findById(TagEntity.class, tagId);
            }
            catch (NumberFormatException exception)
            {
                throw new ConverterException(new FacesMessage(FacesMessage.SEVERITY_ERROR, "Conversion Error", "Not a valid Group"));
            }
        }
    }

    @Override
    public String getAsString(FacesContext context, UIComponent component, Object value)
    {
        if (value instanceof TagEntity)
        {
            Long id = ((TagEntity) value).getId();
            if (id == null)
                return null;
            else
            {
                return id.toString();
            }

        }
        else
        {
            if(value != null)
                return String.valueOf(value);
            return null;
        }
    }

}