package org.openslx.satellitedaemon.filetransfer;

import java.io.File;
import java.util.List;
import java.util.UUID;

import org.apache.log4j.Logger;
import org.openslx.filetransfer.Uploader;
import org.openslx.imagemaster.thrift.iface.ImageData;
import org.openslx.imagemaster.thrift.iface.UploadInfos;
import org.openslx.satellitedaemon.Globals;
import org.openslx.satellitedaemon.db.DbImage;

public class FileUploadWorker implements Runnable
{
	private static Logger log = Logger.getLogger( FileUploadWorker.class );

	@Override
	public void run()
	{
		while ( true ) {
			// This List contains all Images in the Database that should be
			// uploaded.
			List<DbImage> imageList = DbImage.getAllMarkedForUpload();
			log.info( "imageList Contains " + imageList.size() + " items." );

			// Upload one Image after the other.
			for ( DbImage image : imageList ) {
				// TODO: still some fields for ImageData, which i can't fill with info from DbImage.
				//				ImageData imDat = new ImageData(image.guid, image.rid,
				//						image.name, System.currentTimeMillis(),
				//						System.currentTimeMillis(), image.creator, "anyThing",	// TODO: fields in databases need to fit somehow...
				//						true, false, "best", "theVeryBest", image.fileSize);

				// Only for testing because a random UUID is used. Later the method above should be used. 
				ImageData imDat = new ImageData(
						UUID.randomUUID().toString(), image.rid,
						image.name, System.currentTimeMillis(),
						System.currentTimeMillis(), image.creator, "anyThing",
						true, false, "best", "theVeryBest", image.fileSize );

				String crcPath = image.path.concat( ".crc" );
				// ThriftConnection.getUploadInfos returns uploadInfo and handles ThriftAuthentication
				UploadInfos upInfos = ThriftConnection.getUploadInfos( imDat, crcPath );
				if ( upInfos == null ) {
					log.error( "The UploadInfos returned by ThriftConnection Class are null" );
					continue;
				}
				log.info( "Got upInfos. Trying to create Uploader with token: "
						+ upInfos.token );

				// creating the uploader with the "context"-item.
				Uploader u;
				u = new Uploader( Globals.getMasterserverHost(),
						upInfos.port, Globals.getMasterServerSslContext() );
				// Necessary authentication before upload.
				u.sendToken( upInfos.token );

				log.info( "upInfos.getMissingBlocks().size() = "
						+ upInfos.getMissingBlocks().size() );
				long fileSize = new File( image.path ).length();

				// continue sending Blocks until getMissingBlocks is empty.
				while ( !upInfos.getMissingBlocks().isEmpty() ) {
					List<Integer> blocks = upInfos.getMissingBlocks();
					log.info( "Anzahl angeforderter Blöcke : " + blocks.size() );
					log.info( blocks );
					for ( int i = 0; i < blocks.size(); i++ ) {
						int startOffset = blocks.get( i ) * Globals.BLOCKSIZE; // TODO: long
						int endOffset = startOffset + Globals.BLOCKSIZE;
						if ( endOffset > fileSize )
							endOffset = (int)fileSize; // TODO: Long
						u.sendRange( startOffset, endOffset );
						u.sendFile( image.path );
						log.info( "Block number " + blocks.get( i ) + " uploaded." );
					}
					upInfos = ThriftConnection.getUploadInfos( imDat );
				}
				u.close();
			}
			try {
				Thread.sleep( 1 * 60 * 1000 );
				// Thread.sleep( 1000 );
			} catch ( InterruptedException e ) {
				Thread.currentThread().interrupt();
				return;
			}
		}

	}
}