package org.ofbiz.birt.report.servlet;

import java.io.IOException;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.eclipse.birt.core.exception.BirtException;
import org.eclipse.birt.report.IBirtConstants;
import org.eclipse.birt.report.context.IContext;
import org.eclipse.birt.report.context.ViewerAttributeBean;
import org.eclipse.birt.report.presentation.aggregation.layout.EngineFragment;
import org.eclipse.birt.report.presentation.aggregation.layout.RequesterFragment;
import org.eclipse.birt.report.service.BirtReportServiceFactory;
import org.eclipse.birt.report.servlet.BaseReportEngineServlet;
import org.eclipse.birt.report.utility.BirtUtility;
import org.ofbiz.birt.report.context.OFBizBirtContext;
import org.ofbiz.birt.report.service.OFBizBirtViewerReportService;

public class BirtEngineServlet extends BaseReportEngineServlet {
    /**
     * TODO: what's this?
     */
    private static final long serialVersionUID = 1L;

    /**
     * Local initialization.
     * 
     * @return
     */
    protected void __init( ServletConfig config )
    {
        BirtReportServiceFactory.init( new OFBizBirtViewerReportService( config
                .getServletContext( ) ) );

        engine = new EngineFragment( );

        requester = new RequesterFragment( );
        requester.buildComposite( );
        requester.setJSPRootPath( "/webcontent/birt" ); //$NON-NLS-1$
    }

    /**
     * Init context.
     * 
     * @param request
     *            incoming http request
     * @param response
     *            http response
     * @exception BirtException
     * @return IContext
     */
    protected IContext __getContext( HttpServletRequest request,
            HttpServletResponse response ) throws BirtException
    {
        BirtReportServiceFactory.getReportService( ).setContext(
                getServletContext( ), null );
        return new OFBizBirtContext( request, response );
    }

    /**
     * Local authentication.
     * 
     * @param request
     *            incoming http request
     * @param response
     *            http response
     * @return
     */
    protected boolean __authenticate( HttpServletRequest request,
            HttpServletResponse response )
    {
        return true;
    }

    /**
     * Local do get.
     */
    protected void __doGet( IContext context ) throws ServletException,
            IOException, BirtException
    {
        ViewerAttributeBean bean = (ViewerAttributeBean) context.getBean( );
        assert bean != null;

        if ( ( IBirtConstants.SERVLET_PATH_PREVIEW.equalsIgnoreCase( context
                .getRequest( ).getServletPath( ) )
                || IBirtConstants.SERVLET_PATH_DOCUMENT
                        .equalsIgnoreCase( context.getRequest( )
                                .getServletPath( ) ) || IBirtConstants.SERVLET_PATH_OUTPUT
                .equalsIgnoreCase( context.getRequest( ).getServletPath( ) ) )
                && bean.isShowParameterPage( ) )
        {
            requester.service( context.getRequest( ), context.getResponse( ) );
        }
        else if ( IBirtConstants.SERVLET_PATH_PARAMETER
                .equalsIgnoreCase( context.getRequest( ).getServletPath( ) ) )
        {
            requester.service( context.getRequest( ), context.getResponse( ) );
        }
        else
        {
            engine.service( context.getRequest( ), context.getResponse( ) );
        }
    }

    /**
     * Process exception for non soap request.
     * 
     * @param request
     *            incoming http request
     * @param response
     *            http response
     * @param exception
     * @throws ServletException
     * @throws IOException
     */
    protected void __handleNonSoapException( HttpServletRequest request,
            HttpServletResponse response, Exception exception )
            throws ServletException, IOException
    {
        exception.printStackTrace( );
        BirtUtility.appendErrorMessage( response.getOutputStream( ), exception );
    }
}