/*
	Milyn - Copyright (C) 2006

	This library is free software; you can redistribute it and/or
	modify it under the terms of the GNU Lesser General Public
	License (version 2.1) as published by the Free Software
	Foundation.

	This library is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

	See the GNU Lesser General Public License for more details:
	http://www.gnu.org/licenses/lgpl.txt
*/
package org.milyn.javabean.pojogen;

import org.milyn.assertion.AssertArgument;
import org.apache.commons.lang.ArrayUtils;

import java.util.Set;

/**
 * Java type model.
 * <p/>
 * Includes generic typing.
 *
 * @author bardl
 * @author <a href="mailto:tom.fennelly@jboss.com">tom.fennelly@jboss.com</a>
 */
public class JType {

    private Class<?> type;
    private Class<?> genericType;

    public JType(Class<?> type) {
        AssertArgument.isNotNull(type, "type");
        this.type = type;
    }

    public JType(Class<?> type, Class<?> genericType) {
        AssertArgument.isNotNull(type, "type");
        AssertArgument.isNotNull(genericType, "genericType");
        this.type = type;
        this.genericType = genericType;
    }

    public Class<?> getType() {
        return type;
    }

    public Class<?> getGenericType() {
        return genericType;
    }

    public void addImports(Set<Class<?>> importSet, String[] excludePackages) {
        AssertArgument.isNotNull(importSet, "importSet");
        if(!type.isPrimitive()) {
            if(!ArrayUtils.contains(excludePackages, getPackageName(type))) {
                importSet.add(type);
            }
        }
        if(genericType != null && !genericType.isPrimitive()) {
            if(!ArrayUtils.contains(excludePackages, getPackageName(genericType))) {
                importSet.add(genericType);
            }
        }
    }

    private String getPackageName(Class clazz) {
        // We can't use Class.getPackage for some reason because Javassist is not returning anything??

        String name = clazz.getName();
        int lastDot = name.lastIndexOf('.');

        return name.substring(0, lastDot);
    }

    @Override
    public String toString() {
        if(genericType != null) {
            return type.getSimpleName() + "<" + genericType.getSimpleName() + ">";
        }

        return type.getSimpleName();
    }
}