import java.io.*;
import java.util.*;
import java.nio.channels.FileChannel;
/**
 * 
 * 
 * @author Sacchi Matteo, Sassi Federico
 * @version 0.1
 */
public class TargheReaderRed implements DataReaderTarghe {
	
	private File file;
	private ArrayList input;
	private Map in_out;
	private Map occurencies;

	public TargheReaderRed(File file){
		this.file = file;
		in_out = new HashMap();
		occurencies = new HashMap();
		input = new ArrayList();
		File temp = null;

		if(file.isDirectory()) {
			java.io.FilenameFilter select = new FileListFilter(null, "txt");
			File sources[] = file.listFiles(select);
			FileOutputStream outf = null;
			FileInputStream inpf = null;
	
			try {
				temp = File.createTempFile("Classifier_save", null, new File("./ts/"));
				outf = new FileOutputStream(temp, true);
			}
			catch(IOException e) {
				e.printStackTrace(System.err);
				System.exit(1);
			}
	
			FileChannel out = outf.getChannel();
	
			for(int i = 0; i < sources.length; i++) {
	
				try {
					inpf = new FileInputStream(sources[i]);
				}
				catch(IOException e) {
					e.printStackTrace(System.err);
					System.exit(1);
				}
		
				FileChannel in = inpf.getChannel();
		
				try {
					long bytesWritten = 0L;
					long bytesCount = in.size();
					while (bytesWritten < bytesCount) {
						bytesWritten += in.transferTo(bytesWritten, bytesCount - bytesWritten, out);
					}
					inpf.close();
				}
				catch(IOException e) {
					e.printStackTrace(System.err);
					System.exit(1);
				}
		
			}

			file = temp;
		} 

		else if(!file.isFile()) {
			System.err.println(file + " : nome file non esistente...");
			System.exit(1);
		} 

		else {
			String name = file.getName();
			if(!name.endsWith(".txt")) {
				System.err.println(file.getName() + " : formato file non valido...");
				System.exit(1);
			}
		}	
	}

	public void Load(){	
		try{
        	FileReader fr = new FileReader(file);
         	BufferedReader br = new BufferedReader(fr);
	       	String s,sin,sout,opz,res;

        	while ((s = br.readLine()) != null) {
        		s = s.trim();
			if (s.indexOf("/")!=-1 || s.indexOf("#")!=-1 ){
				continue;
			}        		
        		s = s.replaceAll("[^0-9]", "").replaceAll("/s","");
			sin = s.substring(0,28);
        		sout = s.substring(28);
			LongBox in = new LongBox(Long.parseLong(sin,2));
        		LongBox out = new LongBox(Long.parseLong(sout));
        		input.add(in);
        		in_out.put(in,out);
        		Long tmp = (Long) occurencies.get(new Long(out.long_value));
        		if (tmp == null)
        			occurencies.put(new Long(out.long_value),new Long(1));
        		else {
        			tmp = new Long((tmp).longValue()+1); 
        			occurencies.put(new Long(out.long_value), tmp);
        		}
    		} 
		}
		catch (FileNotFoundException e){
			e.printStackTrace(System.err);
			System.exit(-1);
		}
		catch (IOException e){
			e.printStackTrace(System.err);
			System.exit(-1);
		}
	}
	
	public long getOccurencies(Long key){
		return ((Long)occurencies.get(key)).longValue();
	}
	
	public Map getMap(){
		return in_out;
	}
	public ArrayList getInputObjects(){
		return input;
	}
	public boolean isExt(){
		return false;
	}
}