package au.com.nmcgroup.jspwiki.plugin;

import java.util.*;
import com.ecyrd.jspwiki.*;
import com.ecyrd.jspwiki.plugin.WikiPlugin;
import com.ecyrd.jspwiki.plugin.PluginException;
import com.ecyrd.jspwiki.attachment.AttachmentManager;
import com.ecyrd.jspwiki.attachment.Attachment;
import com.ecyrd.jspwiki.providers.ProviderException;

/**
 *  Provides an image plugin for better control than is possible with
 *  a standard image plugin.
 * <P>
 * We wanted to put in a horizontal row of images, and they weren't
 * rendering well with Image, so this plugin solves it.
 *
 * @author kdavidson
 * Date: 24/08/2004
 * Time: 10:42:17
 * To change this template use File | Settings | File Templates.
 */
public class ImageRow implements WikiPlugin {

    public static final String PARAM_SRC      = "src";
    public static final String PARAM_ALIGN    = "align";
    public static final String PARAM_HEIGHT   = "height";
    public static final String PARAM_WIDTH    = "width";
    public static final String PARAM_CELL_WIDTH  = "cellwidth";
    public static final String PARAM_ALT      = "alt";
    public static final String PARAM_CAPTION  = "caption";
    public static final String PARAM_LINK     = "link";
    public static final String PARAM_STYLE    = "style";
    public static final String PARAM_CLASS    = "class";
    //    public static final String PARAM_MAP      = "map";
    public static final String PARAM_BORDER   = "border";

    /**
     *  This method is used to clean away things like quotation marks which
     *  a malicious user could use to stop processing and insert javascript.
     */
    private static final String getCleanParameter( Map params, String paramId )
    {
        return TextUtil.replaceEntities( (String) params.get( paramId ) );
    }

    public String execute( WikiContext context, Map params )
        throws PluginException
    {
        WikiEngine engine = context.getEngine();
        String srcList     = getCleanParameter( params, PARAM_SRC );
        String align   = getCleanParameter( params, PARAM_ALIGN );
        String ht      = getCleanParameter( params, PARAM_HEIGHT );
        String wt      = getCleanParameter( params, PARAM_WIDTH );
        String cellwt      = getCleanParameter( params, PARAM_CELL_WIDTH );
        String alt     = getCleanParameter( params, PARAM_ALT );
        String captionList = getCleanParameter( params, PARAM_CAPTION );
        String link    = getCleanParameter( params, PARAM_LINK );
        String style   = getCleanParameter( params, PARAM_STYLE );
//        String cssclass= getCleanParameter( params, PARAM_CLASS );
        // String map     = getCleanParameter( params, PARAM_MAP );
        String border  = getCleanParameter( params, PARAM_BORDER );

        System.out.println("srcList = " + srcList);
        System.out.println("captionList = " + captionList);

        if( srcList == null )
        {
            throw new PluginException("Parameter 'src' is required for ImageRow plugin");
        }

//        if( cssclass == null ) cssclass = "imageplugin";
        String[] srcs = srcList.split(",");
        String[] captions = captionList.split(",");

        for (int i = 0; i < srcs.length; i++) {
            String s = srcs[i].trim();
            try
            {
                AttachmentManager mgr = engine.getAttachmentManager();
                Attachment        att = mgr.getAttachmentInfo( context, srcList );

                if( att != null )
                {
                    srcList = engine.getAttachmentURL(att.getName());
                }
            }
            catch( ProviderException e )
            {
                throw new PluginException( "Attachment info failed: "+e.getMessage() );
            }
        }

        StringBuffer result = new StringBuffer();

        result.append( "<table border=\"0\"");
        if( align != null ) result.append(" align=\""+align+"\"");
        if( style != null ) result.append(" style=\""+style+"\"");
        result.append( ">\n<tr>\n" );

        for (int i = 0; i < srcs.length; i++) {
            String s = srcs[i].trim();

            result.append( "<td width=\""+cellwt+"\" align=\"center\">" );

            if( link != null )
            {
                result.append("<a href=\""+link+"\">");
            }

            result.append( "<img src=\"attach?page="+s+"\"" );

            if( ht != null )     result.append(" height=\""+ht+"\"");
            if( wt != null )     result.append(" width=\""+wt+"\"");
            if( alt != null )    result.append(" alt=\""+alt+"\"");
            if( border != null ) result.append(" border=\""+border+"\"");
            // if( map != null )    result.append(" map=\""+map+"\"");

            result.append(" />");
            if( link != null )  result.append("</a>");
            result.append("</td>\n");
        }

        result.append("</tr>\n");
        result.append("<tr>\n");

        for (int i = 0; i < srcs.length; i++) {
            String s = srcs[i];

            result.append( "<td width=\""+cellwt+"\" align=\"center\">" );
            if(i < captions.length){
                result.append(TextUtil.replaceEntities(captions[i].trim()));
            }
            result.append("</td>\n");
        }

        result.append("</tr>\n");
        result.append("</table>\n");

        return result.toString();
    }
}