package com.efsol.friki;

import java.io.File;
import java.util.Map;
import java.util.HashMap;
import java.util.StringTokenizer;

import org.stringtree.factory.Fetcher;
import org.stringtree.factory.StorerHelper;
import org.stringtree.factory.TractFetcher;
import org.stringtree.factory.memory.MapStringRepository;
import org.stringtree.juicer.formatter.ExternalFormatter;
import org.stringtree.util.FileReadingUtils;

public class ClassicToHTMLFilter 
	extends TransformFilter
{
	protected void setContext(Fetcher context, TractFetcher pages, Map remoteNames)
	{
		StorerHelper.put(context, "wiki.pages", pages);
		StorerHelper.put(context, "wiki.remoteNames", new MapStringRepository(remoteNames));
	}

	public ClassicToHTMLFilter(Fetcher context, TractFetcher pages, Map remoteNames, String spec)
	{
		setContext(context, pages, remoteNames);
		setConverter(new ExternalFormatter(spec, context));
	}

	public ClassicToHTMLFilter(Fetcher context, TractFetcher pages, Map remoteNames, File file)
	{
		this(context, pages, remoteNames, FileReadingUtils.readFile(file));
	}

	protected static Map loadRemoteDetails(File file)
	{
		Map remoteNames = new HashMap();
		String spec = FileReadingUtils.readFile(file);
		StringTokenizer tok = new StringTokenizer(spec, "\n");
		while (tok.hasMoreTokens())
		{
			String line = tok.nextToken().trim();
			int sep = line.indexOf(" ");
			if (sep > 0)
			{
				String name = line.substring(0,sep);
				String url = line.substring(sep+1);
				remoteNames.put(name, url);
			}
		}

		return remoteNames;
	}

	public String makeLinkSource(String name)
	{
		return "<a href='view?" + name + "'>" + name + "</a>";	
	}
}