/*******************************************************************************
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * 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.
 *
 *******************************************************************************/
package com.liferay.ide.service.core.util;

import com.liferay.ide.core.util.CoreUtil;
import com.liferay.ide.project.core.util.SearchFilesVisitor;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;


/**
 * @author Gregory Amerson
 * @author Cindy Li
 */
public class ServiceUtil
{

    public static IJavaProject[] getAllServiceProjects()
    {
        final List<IJavaProject> serviceProjects = new ArrayList<IJavaProject>();

        for( final IProject project : CoreUtil.getAllProjects() )
        {
            if( project.isAccessible() )
            {
                final IJavaProject jp = JavaCore.create( project );

                if( jp != null )
                {
                    final List<IFile> serviceXmls = new SearchFilesVisitor().searchFiles( project, "service.xml" );

                    if( serviceXmls.size() > 0 )
                    {
                        serviceProjects.add( jp );
                    }
                }
            }
        }

        return serviceProjects.toArray( new IJavaProject[0] );
    }

    public static String getDTDVersion( Document document )
    {
        String dtdVersion = null;
        DocumentType docType = document.getDoctype();

        if( docType != null )
        {
            String publicId = docType.getPublicId();
            String systemId = docType.getSystemId();

            if( publicId != null && systemId != null )
            {
                if( publicId.contains( "6.0.0" ) || systemId.contains( "6.0.0" ) ) //$NON-NLS-1$ //$NON-NLS-2$
                {
                    dtdVersion = "6.0.0" ; //$NON-NLS-1$
                }
                else if( publicId.contains( "6.1.0" ) || systemId.contains( "6.1.0" ) ) //$NON-NLS-1$ //$NON-NLS-2$
                {
                    dtdVersion = "6.1.0"; //$NON-NLS-1$
                }
            }
        }

        return dtdVersion;
    }

    public static boolean isChar( char c )
    {
        int x = c;

        if( ( x >= 97 && x <= 122 ) || ( x >= 65 && x <= 90 ) )
        {
            return true;
        }

        return false;
    }

    public static boolean isValidNamespace( String namespace )
    {
        for( char c : namespace.toCharArray() )
        {
            if( ( c != '_' ) && ( ! isChar( c ) ) )
            {
                return false;
            }
        }

        return true;
    }

}