/*******************************************************************************
 * 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.server.util;

import com.liferay.ide.core.util.CoreUtil;
import com.liferay.ide.server.core.LiferayServerCore;

import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @author Greg Amerson
 */
public class WebServicesHelper
{
    protected URL webServicesListURL;
    protected Map<String, String> wsdlNameURLMap = null;

    public WebServicesHelper( URL webServicesListURL )
    {
        this.webServicesListURL = webServicesListURL;
    }

    public String[] getWebServiceNames()
    {
        if( wsdlNameURLMap == null )
        {
            initMap();
        }

        return wsdlNameURLMap.keySet().toArray( new String[0] );
    }

    protected void initMap()
    {
        try
        {
            wsdlNameURLMap = new HashMap<String, String>();
            String webServicesString = CoreUtil.readStreamToString( webServicesListURL.openStream() );
            List<String> wsdlUrls = pullLinks( webServicesString );

            for( String url : wsdlUrls )
            {
                String name = pullServiceName( url );

                if( !CoreUtil.isNullOrEmpty( name ) )
                {
                    wsdlNameURLMap.put( name, url );
                }
            }
        }
        catch( IOException e1 )
        {
            LiferayServerCore.logError( "Unable to initial web services list." ); //$NON-NLS-1$
        }
    }

    private List<String> pullLinks( String text )
    {
        List<String> links = new ArrayList<String>();

        String regex = "\\(?\\b(http://|www[.])[-A-Za-z0-9+&@#/%?=~_()|!:,.;]*[-A-Za-z0-9+&@#/%=~_()|]"; //$NON-NLS-1$
        Pattern p = Pattern.compile( regex );
        Matcher m = p.matcher( text );

        while( m.find() )
        {
            String urlStr = m.group();

            if( urlStr.startsWith( "(" ) && urlStr.endsWith( ")" ) ) //$NON-NLS-1$ //$NON-NLS-2$
            {
                urlStr = urlStr.substring( 1, urlStr.length() - 1 );
            }
            links.add( urlStr );
        }

        return links;
    }

    private String pullServiceName( String wsdlUrl )
    {
        String regex = "axis/(\\w+)\\?wsdl$"; //$NON-NLS-1$
        Pattern p = Pattern.compile( regex );
        Matcher m = p.matcher( wsdlUrl );

        if( m.find() )
        {
            return m.group( 1 );
        }

        return null;
    }

    public String getWebServiceWSDLURLByName( String serviceName )
    {
        if( wsdlNameURLMap == null )
        {
            initMap();
        }

        return wsdlNameURLMap.get( serviceName );
    }

}