package net.sf.statcvs.reports;

 import java.util.Calendar;

 import java.util.Collection;

 import java.util.Date;

 import java.util.GregorianCalendar;

 import java.util.Iterator;

 import net.sf.statcvs.model.Author;

 import net.sf.statcvs.model.Repository;

 import net.sf.statcvs.model.Revision;

 import net.sf.statcvs.output.ConfigurationOptions;

 import net.sf.statcvs.output.ReportConfig;

 import net.sf.statcvs.pages.CommitLogPageMaker;

 import net.sf.statcvs.pages.TwitterHelp;

 import net.sf.statcvs.reportmodel.AuthorColumn;

 import net.sf.statcvs.reportmodel.IntegerColumn;

 import net.sf.statcvs.reportmodel.LinkColumn;

 import net.sf.statcvs.reportmodel.SimpleTextColumn;

 import net.sf.statcvs.reportmodel.Table;

 import net.sf.statcvs.util.IntegerMap;

 /**

  * Table report which creates a table containing the names of all developers,

  * their LOC contributions and number of changes.

  * 

  * @author Anja Jentzsch (anja@anjeve.de)

  * @version $Id: DevelopersTableReport.java,v 1.1 2006/12/08 16:19:25 cyganiak

  *          Exp $

  */

 public class DevelopersOfTheMonthTable implements TableReport {

     private final ReportConfig config;

     private final Repository repository;

     private Table table;

     private final static String[] MONTH_NAME = { "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November",

             "December" };

     /**

      * Creates a table report containing all authors, their number of changes

      * and LOC contributions.

      * 

      * @param content

      *            the version control source data

      */

     public DevelopersOfTheMonthTable(final ReportConfig config) {

         this.repository = config.getRepository();

         this.config = config;

     }

     public void calculate() {

         final LinkColumn months = new LinkColumn("Month");

         final AuthorColumn developers = new AuthorColumn();

         final IntegerColumn loc = new IntegerColumn("Lines");

         final SimpleTextColumn twitter = new SimpleTextColumn("Tweet This");

         loc.setShowPercentages(false);

         this.table = new Table("Repository Tags");

         this.table.setKeysInFirstColumn(true);

         this.table.addColumn(months);

         this.table.addColumn(developers);

         this.table.addColumn(loc);

         if (ConfigurationOptions.isEnableTwitterButton()) {

             this.table.addColumn(twitter);

         }

         final Date start = this.repository.getFirstDate();

         final Date end = this.repository.getLastDate();

         final Calendar calendar = new GregorianCalendar();

         calendar.setTime(end);

         final Calendar startCal = new GregorianCalendar();

         startCal.setTime(start);

         while (true) {

             final int year = calendar.get(Calendar.YEAR);

             final int month = calendar.get(Calendar.MONTH);

             final String month_year = MONTH_NAME[month] + " " + year;

             final IntegerMap developerMap = getMostActiveUserOfMonth(month, year);

             if (developerMap.size() > 0) {

                 months.addValue(CommitLogPageMaker.getURL(calendar.getTime()), month_year);

                 final Iterator it = developerMap.iteratorSortedByValueReverse();

                 final Author developer = (Author) it.next();

                 developers.addValue(developer);

                 loc.addValue(developerMap.get(developer));

                 twitter.addValue(TwitterHelp.buildDeveloperOfMonthLink(developer, developerMap.get(developer), repository, month_year, config));

             }

             if (calendar.get(Calendar.YEAR) == startCal.get(Calendar.YEAR) && calendar.get(Calendar.MONTH) == startCal.get(Calendar.MONTH)) {

                 break;

             }

             calendar.add(Calendar.MONTH, -1);

         }

     }

     private IntegerMap getMostActiveUserOfMonth(final int month, final int year) {

         final Collection revisions = this.repository.getRevisions();

         final Calendar calendar = new GregorianCalendar();

         final IntegerMap developerMap = new IntegerMap();

         final Iterator it = revisions.iterator();

         while (it.hasNext()) {

             final Revision revision = (Revision) it.next();

             calendar.setTime(revision.getDate());

             if (calendar.get(Calendar.YEAR) != year || calendar.get(Calendar.MONTH) != month || revision.getAuthor() == null) {

                 continue;

             }

             if (developerMap.contains(revision.getAuthor())) {

                 final int loc = developerMap.get(revision.getAuthor());

                 developerMap.put(revision.getAuthor(), revision.getNewLines() + loc);

             } else {

                 developerMap.put(revision.getAuthor(), revision.getNewLines());

             }

         }

         return developerMap;

     }

     public Table getTable() {

         return this.table;

     }

 }