package org.litesoft.sandbox.csapp.server;

import org.litesoft.sandbox.csapp.client.*;
import org.litesoft.sandbox.csapp.client.dtos.*;

import com.google.gwt.user.server.rpc.*;

import java.util.*;

public class CSappServiceImpl extends RemoteServiceServlet implements CSappService
{
    @Override
    public Response1 getMessage1( Request1 request )
    {
        List<String> zFilters = request.getFilters();
        String[] rv = new String[zFilters.size()];
        for ( int i = 0; i < zFilters.size(); i++ )
        {
            rv[i] = "SS1: " + zFilters.get(i);
        }
        return new Response1( rv );
    }

    @Override
    public Response2 getMessage2( Request2 request )
    {
        String[] zFilters = request.getFilters();
        String[] rv = new String[zFilters.length];
        for ( int i = 0; i < zFilters.length; i++ )
        {
            rv[i] = "SS2: " + zFilters[i];
        }
        if (zFilters.length != 0)
        {
            throw new IllegalArgumentException( "WTF" );
        }
        return new Response2( rv );
    }

//    @Override
    public <Req extends Request, Resp extends Response> Resp getMessage( Req request )
    {
        if ( request instanceof Request1 )
        {
            return cast( getMessage1( (Request1) request ) );
        }
        if ( request instanceof Request2 )
        {
            return cast( getMessage2( (Request2) request ) );
        }
        return null;
    }

    @SuppressWarnings({"unchecked"}) private static <Resp extends Response> Resp cast( Response response )
    {
        return (Resp) response;
    }
}