/*
 * [Collect.java]
 *
 * Summary: Consolidate hit stats collected every 30 minutes.
 *
 * Copyright: (c) 2012-2017 Roedy Green, Canadian Mind Products, http://mindprod.com
 *
 * Licence: This software may be copied and used freely for any purpose but military.
 *          http://mindprod.com/contact/nonmil.html
 *
 * Requires: JDK 1.8+
 *
 * Created with: JetBrains IntelliJ IDEA IDE http://www.jetbrains.com/idea/
 *
 * Version History:
 *  1.0 2012-01-20
 */
package com.mindprod.stats;

import com.mindprod.common18.Build;
import com.mindprod.common18.EIO;
import com.mindprod.common18.ST;
import com.mindprod.csv.CSVWriter;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.GregorianCalendar;

import static java.lang.System.*;

/**
 * Consolidate hit stats collected every 30 minutes.
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.0 2012-01-20
 * @since 2012-01-20
 */
public final class Collect
    {
    ;

    /**
     * Modified Zulu format mask 2008-06-22T07:57+46.438
     */
    private static final SimpleDateFormat SDF = new SimpleDateFormat( "yyyy-MM-dd'T'HH:mm'+'ss" );

    /**
     * collect individual *.cnt files into the profile.csv
     *
     * @param args not used
     */
    public static void main( String[] args ) throws IOException
        {
        out.println( "adding" );
        out.println( "file, timestamp, hits, time" );
        final PrintWriter pw = EIO.getPrintWriter( new File( Build.MINDPROD_SOURCE + "/stats/profile.csv" ),
                32 * 1024, EIO.UTF8 );
        final CSVWriter w = new CSVWriter( pw, 0 /* minimal  */, ',', '\"', '#', true /* trim */ );
        final File dir = new File( "E:/snaps" );
        final String[] cnts = dir.list();
        for ( String cnt : cnts )
            {
            final File cntFile = new File( dir, cnt );
            // O P E N
            final FileReader fr = new FileReader( cntFile );
            final BufferedReader br = new BufferedReader( fr, 16 );
            // R E A D
            final String line = br.readLine();
            final int hits = Integer.parseInt( line );
            final String isoDate = cnt.substring( 0, 10 );
            final int year = Integer.parseInt( isoDate.substring( 0, 4 ) );
            final int month = Integer.parseInt( isoDate.substring( 5, 7 ) );
            final int day = Integer.parseInt( isoDate.substring( 8, 10 ) );
            int agg = Integer.parseInt( ST.chopTrailingString( cnt.substring( 11 ), ".cnt" ) );
            final int sec = agg % 60;
            agg = agg / 60;
            final int min = agg % 60;
            agg = agg / 60;
            final int hrs = agg % 24;
            agg = agg / 24;
            assert agg == 0 : "time greater than 24 hours";
            // local time to UTC
            GregorianCalendar when = new GregorianCalendar( year, month - 1, day, hrs, min, sec );
            final Date datestamp = when.getTime();
            final long timestamp = datestamp.getTime();
            // tack this reading onto the tail end.
            w.put( isoDate );
            w.put( timestamp );
            w.put( hits );
            w.nl();
            out.println( cnt + ", " + timestamp + ", " + hits + ", " + SDF.format( datestamp ) );
            // C L O S E
            br.close();
            cntFile.delete();
            }
        w.close();
        }
    }