/************  CardHandler.java  ************/
import java.io.*;
import java.util.Formatter;

public class CardHandler {
	protected String Name;
	protected double Value;
	protected String Type;
	protected String LastAction;
	
	File cardFile;
	
	public boolean openFromPath(String filename) {
		cardFile = new File(filename);
		if (!cardFile.exists()) { return false; }
		try {
			FileReader input = new FileReader(filename);
			BufferedReader bufRead = new BufferedReader(input);
			//String line = getClass().getName(); 	// String that holds current file line
			
			String Line[] = new String[4];
			for (int i=0; i<Line.length; i++) {
				Line[i] = bufRead.readLine();
			}
			Type = Line[0];
			Name = Line[1];
			Value = Double.valueOf(Line[2].trim()).doubleValue();
			LastAction = Line[3];
			
			bufRead.close();   
		}
		catch (ArrayIndexOutOfBoundsException e){ System.out.println("array index error"); return false; }
		catch (IOException e) { System.out.println("IO error"); return false; }
		return true;
	}
	
	public boolean isInserted() {
		return cardFile.exists();
	}

	public String getMeta(String dataname) {
		if (dataname.equals("Type")) {return Type;}
		if (dataname.equals("Name")) {return Name;}
		if (dataname.equals("LastAction")) {return LastAction;}
		return null;
	}
	public double getValue() {
		return Value;
	}

	public void setMeta(String dataname, String newValue) {
		if (dataname.equals("Type")) {this.Type = newValue;}
		if (dataname.equals("Name")) {this.Name = newValue;}
		if (dataname.equals("Value")) {this.Value = Double.valueOf(newValue).doubleValue();}
		if (dataname.equals("LastAction")) {this.LastAction = newValue;}
	}
	
	public void adjustValue(double difference) {
		Value += difference;
	}

	public boolean close() {
		try
		{
			PrintStream ps = new PrintStream(cardFile);
			ps.println(Type);
			ps.println(Name);
			ps.println(Value);
			ps.println(LastAction);
			ps.close();
		}
		catch (IOException e) { return false; }
		return true;
	}
}