/*******************************************************************************
 *     SDR Trunk 
 *     Copyright (C) 2014,2015 Dennis Sheirer
 * 
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 * 
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 * 
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>
 ******************************************************************************/
package module.decode.event;

import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;

import javax.swing.table.AbstractTableModel;

import module.decode.event.CallEvent.CallEventType;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import sample.Listener;

public class CallEventModel extends AbstractTableModel implements Listener<CallEvent>
{
    private static final long serialVersionUID = 1L;

	private final static Logger mLog = LoggerFactory.getLogger( CallEventModel.class );

	private static DecimalFormat mFrequencyFormatter = 
			new DecimalFormat( "0.000000" );
    
    public static final int TIME = 0;
    public static final int EVENT = 1;
    public static final int FROM_ID = 2;
    public static final int FROM_ALIAS = 3;
    public static final int TO_ID = 4;
    public static final int TO_ALIAS = 5;
    public static final int CHANNEL = 6;
    public static final int FREQUENCY = 7;
    public static final int DETAILS = 8;

	protected int mMaxMessages = 500;

	protected List<CallEvent> mEvents = new ArrayList<CallEvent>();

	protected String[] mHeaders = new String[] { "Time",
												 "Event",
												 "From",
												 "Alias",
												 "To",
												 "Alias",
												 "Channel",
												 "Frequency",
												 "Details" };

	private SimpleDateFormat mSDFTime = new SimpleDateFormat( "HH:mm:ss" );
	
	private boolean mNewMessagesFirst = true;
	
	public CallEventModel()
	{
	}
	
	public void dispose()
	{
		mEvents.clear();
	}
	
	public void reset()
	{
		mEvents.clear();
		
		fireTableDataChanged();
	}
	
	public int getMaxMessageCount()
	{
		return mMaxMessages;
	}

	public void setMaxMessageCount( int count )
	{
		mMaxMessages = count;
	}

	/**
	 * Adds, updates or deletes the event from the model.  Producers can send
	 * the same call event multiple times to indicate that information in the
	 * event is updated.  Producers can also mark the event as invalid and the
	 * event will be removed from the model.
	 */
	public void receive( final CallEvent event )
	{
	//TODO: reverse this so that the new events go to the end and the oldest
		//events are at the beginning ... use the getObjectAt() to control 
		//correct access to the ordering imposed.
		
		if( event.isValid() )
		{
			if( !mEvents.contains( event ) )
			{
				mEvents.add( 0, event );
				
				fireTableRowsInserted( 0, 0 );

				prune();
			}
			else
			{
				int row = mEvents.indexOf( event );
				
				fireTableRowsUpdated( row, row );
			}
		}
		else
		{
			if( mEvents.contains( event ) )
			{
				int row = mEvents.indexOf( event );
				
				mEvents.remove( event );
				
				fireTableRowsDeleted( row, row );
			}
		}
	}
	
	private void prune()
	{
		while( mEvents.size() > mMaxMessages )
		{
			int index = mEvents.size() - 1;
			mEvents.remove( index );
			
			fireTableRowsDeleted( index, index );
		}
	}

	@Override
    public int getRowCount()
    {
		return mEvents.size();
    }

	@Override
    public int getColumnCount()
    {
	    return mHeaders.length;
    }

	public String getColumnName( int column ) 
	{
        return mHeaders[ column ];
    }
	
	@Override
    public Object getValueAt( int rowIndex, int columnIndex )
    {
		synchronized( mEvents )
		{
			switch( columnIndex )
			{
				case TIME:
					StringBuilder sb = new StringBuilder();
					
					sb.append( mSDFTime.format( 
							mEvents.get( rowIndex ).getEventStartTime() ) );
					
					if( mEvents.get( rowIndex ).getEventEndTime() != 0 )
					{
						sb.append( " - " );
						sb.append( mSDFTime.format( 
								mEvents.get( rowIndex ).getEventEndTime() ) );
					}
					else if( mEvents.get( rowIndex )
							.getCallEventType() == CallEventType.CALL )
					{
						sb.append( " - In Progress" );
					}
					
					return sb.toString();
				case EVENT:
					return mEvents.get( rowIndex ).getCallEventType();
				case FROM_ID:
					return mEvents.get( rowIndex ).getFromID();
				case FROM_ALIAS:
					return mEvents.get( rowIndex ).getFromIDAlias();
				case TO_ID:
					return mEvents.get( rowIndex ).getToID();
				case TO_ALIAS:
					return mEvents.get( rowIndex ).getToIDAlias();
				case CHANNEL:
					return mEvents.get( rowIndex ).getChannel();
				case FREQUENCY:
					long frequency = mEvents.get( rowIndex ).getFrequency();
					
					if( frequency != 0 )
					{
						return mFrequencyFormatter.format( (double)frequency / 1E6d );
					}
					else
					{
						return null;
					}
				case DETAILS:
					return mEvents.get( rowIndex ).getDetails();
			}
		}
		
		return null;
    }
}