package net.sourceforge.fenixedu.applicationTier.Servico.commons;

import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;

import net.sourceforge.fenixedu.applicationTier.FenixService;
import net.sourceforge.fenixedu.domain.DomainObject;
import net.sourceforge.fenixedu.domain.RootDomainObject;
import net.sourceforge.fenixedu.domain.exceptions.DomainException;

import org.apache.commons.beanutils.BeanComparator;
import org.apache.commons.beanutils.PropertyUtils;

import pt.utl.ist.fenix.tools.util.StringNormalizer;

public class SearchObjects extends FenixService implements AutoCompleteSearchService {

    public Collection run(Class type, String value, int limit, Map<String, String> arguments) {
	List<DomainObject> result = new ArrayList<DomainObject>();

	String slotName = arguments.get("slot");
	Collection<DomainObject> objects = RootDomainObject.readAllDomainObjects(type);

	if (value == null) {
	    result.addAll(objects);
	} else {
	    String[] values = StringNormalizer.normalize(value).toLowerCase().split("\\p{Space}+");

	    outter: for (DomainObject object : objects) {
		try {
		    Object objectValue = (Object) PropertyUtils.getProperty(object, slotName);

		    if (objectValue == null) {
			continue;
		    }

		    String normalizedValue = StringNormalizer.normalize(objectValue.toString()).toLowerCase();

		    for (int i = 0; i < values.length; i++) {
			String part = values[i];

			if (!normalizedValue.contains(part)) {
			    continue outter;
			}
		    }

		    result.add(object);

		    if (result.size() >= limit) {
			break;
		    }

		} catch (IllegalAccessException e) {
		    throw new DomainException("searchObject.type.notFound", e);
		} catch (InvocationTargetException e) {
		    throw new DomainException("searchObject.failed.read", e);
		} catch (NoSuchMethodException e) {
		    throw new DomainException("searchObject.failed.read", e);
		}
	    }
	}

	Collections.sort(result, new BeanComparator(slotName));
	return result;
    }
}