package nu.xss.jpa.query.filter;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.Root;

public class EntityFilter<E> extends AbstractFilter<E> {

	private Class<E> entity;

	private List<EntityFilterFlags> flags = new ArrayList<EntityFilterFlags>();

	public EntityFilter(Class<E> entity, EntityFilterFlags... flags) {
		super();
		this.setEntity(entity);
		for (EntityFilterFlags f : flags) {
			this.flags.add(f);
		}
	}

	@Override
	public void buildFilters(CriteriaBuilder cb, Root<?> from) {
		List<Field> fields = getInheritedFields(entity);
		List<Method> methods = new ArrayList<Method>();
		System.out.println(fields.toString());
		for (Method m: entity.getMethods()) {
			if (m.getName().startsWith("get") && m.getName() != "getClass") { 
				methods.add(m);
			}
		}
		System.out.println(methods.toString());
	}

	public Class<E> getEntity() {
		return entity;
	}

	public void setEntity(Class<E> entity) {
		this.entity = entity;
	}

	private List<Field> getInheritedFields(Class<?> type) {
		List<Field> fields = new ArrayList<Field>();
		for (Class<?> c = type; c != null; c = c.getSuperclass()) {
			fields.addAll(Arrays.asList(c.getDeclaredFields()));
		}
		return fields;
	}

}