package YalpServer;

import java.util.ArrayList;

import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;

import YalpInterfaces.*;

public class OutputPluginHandler {

	private ArrayList<OutputPlugin> plugins;
	private static int outputIds = 0;

	private String log4jFile = "log4j_server.conf";

	private static Logger logger =
		Logger.getLogger("Yalp.Server.OutputPluginHandler");

	public OutputPluginHandler() {
		PropertyConfigurator.configureAndWatch(log4jFile);
		logger.debug("OutputPluginHandler()");
		plugins = new ArrayList<OutputPlugin>();
	}

	public PluginInfo addPlugin(OutputPlugin plugin)
	{
		logger.debug("addPlugin("+plugin.info.name+")");
		plugin.info.id = outputIds++;
		plugins.add(plugin);
		return plugin.info;
	}

	public void control( OutputHolder ctlOutput, YalpErrorHolder err ) {

		logger.debug("control()");

		for( OutputPlugin plugin : plugins ) {
			if( plugin.info.id == ctlOutput.value.id ) {
				plugin.itf.control( ctlOutput, err );
				return;
			}
		}

		YalpError error = new YalpError();
		error.descr = "output plugin not found";
		error.msg = "selected output plugin is not available";
		error.code = YalpErrorCode.ERROR_OUTPUT_PLUGIN_NA;
		error.level = YalpErrorLevel.ERROR_LEVEL_ERROR;
		err.value = error;

		Output dummy = new Output();
		ctlOutput.value = dummy;
	}
}