package org.openslx.imagemaster.serverconnection;

import java.sql.Timestamp;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;

import org.apache.log4j.Logger;
import org.openslx.imagemaster.db.DbImage;

/**
 * Helper class for ImageProcessor to save some infos about the images in the process list.
 */
public class UploadingImage
{
	public static final Logger log = Logger.getLogger( UploadingImage.class );
	/**
	 * Token for the satellite.
	 */
	private String token;
	/**
	 * The missing blocks that need to be uploaded by the satellite.
	 */
	private List<Integer> missingBlocks;
	/**
	 * The list of blocks that were requested but not checked
	 */
	private List<Integer> blocksToCheck = new LinkedList<>();
	private Timestamp ts; // when did the server something for the last time
	private DbImage dbImage = null;	// the DB representation of this image
	private String uuid;
	private String filename;
	private String crcFilename;

	protected UploadingImage(String token, List<Integer> missingBlocks, Timestamp ts, String uuid, String filename, String crcFilename)
	{
		this.token = token;
		this.missingBlocks = missingBlocks;
		this.ts = ts;
		this.uuid = uuid;
		this.crcFilename = crcFilename;
		log.debug(missingBlocks);
	}

	protected void removeBlock( int number )
	{
		this.missingBlocks.remove( number );
		dbImage.updateMissingBlocks( missingBlocks );
	}

	protected void removeBlocks( Collection<Integer> list )
	{
		this.missingBlocks.removeAll( list );
		dbImage.updateMissingBlocks( missingBlocks );
	}

	protected void addBlockToCheck( int number )
	{
		synchronized ( blocksToCheck ) {
			blocksToCheck.add( number );
		}
		log.debug( number + " added to check list..." );
	}

	protected List<Integer> getNotCheckedBlocks()
	{
		return this.blocksToCheck;
	}

	protected String getToken()
	{
		return this.token;
	}

	protected List<Integer> getAllMissingBlocks()
	{
		return this.missingBlocks;
	}

	protected Timestamp getTimestamp()
	{
		return this.ts;
	}

	protected DbImage getDbImage()
	{
		if ( dbImage == null ) {
			dbImage = DbImage.getImageByUUID( this.uuid );
		}
		return this.dbImage;
	}
	
	protected String getFilename()
	{
		return this.filename;
	}
	
	protected String getCrcFilename()
	{
		return this.crcFilename;
	}

	public int amountOfMissingBlocks()
	{
		return missingBlocks.size();
	}

	public int removeMissingBlock( int index )
	{
		synchronized ( missingBlocks ) {
			return missingBlocks.remove( index );
		}
	}
}