package com.power.pipeengine.Report;

import java.util.*;
import java.io.*;

import com.power.pipeengine.Variable.*;
import com.power.pipeengine.Constraint.*;
import com.power.pipeengine.InputData.*;
import com.power.pipeengine.LPModel.*;
import com.power.pipeengine.Entity.*;
import com.power.pipeengine.*;
import com.power.pipe.*;

public class ProductionOutsByRoute extends Report
{
    private static final ProductionOutsByRoute INSTANCE =
                              new ProductionOutsByRoute();

   // Private constructor supresses
   // default public constructor
    private ProductionOutsByRoute( ) {
		_fileName = "ProductionOutsByRoute";
		//initFileWriter();
    }

    public static ProductionOutsByRoute getInstance( ) {
        return INSTANCE;
    }

    private StringBuffer content = new StringBuffer();

	public void createReport() throws IOException {
		DataModel dataModel = DataModel.getInstance();
		Vector buckets = dataModel.getCalendar().getBuckets();
		StartsVariable startsVar = StartsVariable.getInstance();
		OutsVariable outsVar = OutsVariable.getInstance();
		Solution sol = Solution.getInstance();
		RouteProducts rteProds = dataModel.getRouteProducts();

		Enumeration allProds = rteProds.getProducts().elements();
		String separator = GlobalConfig.getInstance().getSeparator();

		while( allProds.hasMoreElements() ) {
			Product p = (Product) allProds.nextElement();

			for( int i=0; i<buckets.size(); i++ ) {
				Bucket b = (Bucket) buckets.elementAt( i );

				Vector routes = rteProds.getRoutes( p );
				for( int k=0; k<routes.size(); k++ ) {
					Route aRoute = (Route) routes.elementAt( k );
                                        if( aRoute.getFacility().getNumWorkingDaysForBucket( b.getBucketID() ) == 0 ) {
                                          continue;
                                        }
					Bucket rsb = outsVar.getRouteStartBucket( aRoute, aRoute.getProduct(), b );
					if( null == rsb ) continue;

					String start = startsVar.getVariable( aRoute, aRoute.getProduct(), rsb );

					double startValue = sol.getValue( start );
					double splitFraction = rteProds.getRouteProduct( aRoute.getRouteID(),
																	 p.getProductID() ).getSplitFraction( rsb.getBucketID() );

					double outValue = startValue * aRoute.getYield() * splitFraction;

					//skip if no outs
					if( outValue == 0 ) continue;

					String lineOut =    b.getBucketID() + separator +
										b.getFormatedDate() + separator +
										p.getProductID() + separator +
										p.getFacilityID() + separator +
										aRoute.getRouteID() + separator +
										rsb.getBucketID() + separator +
										outValue + "\n";

					content.append( lineOut );
				}
			}
		}

		//_myFileWriter.close();
		super.flush( content.toString() );
        content = null;
        System.gc();
	}

    public void reset() {
        content = new StringBuffer();
    }

}