Transakcii

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/**
 *
 * @author 143035
 */
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;

/**
 * Transactions 2015/11/14 first midterm
 */
public class TransactionsTest {
  public static void main(String[] args) {
    Transactions transactions = new Transactions();
    List<String> invalid = transactions.readData(System.in);
    System.out.println("=== INVALID DATES ===");
    for (String s : invalid) {
      System.out.println(s);
    }
    System.out.println("=== TRANSACTIONS 2001 ===");
    transactions.writeData(2001, System.out);
    System.out.println("=== TRANSACTIONS 2007 ===");
    transactions.writeData(2007, System.out);
    System.out.println("=== TRANSACTIONS 2013 ===");
    transactions.writeData(2013, System.out);
  }
}

class Constants {
  public static final float USD = 50;
  public static final float EUR = 61.5f;
  public static final int DAYS[] = {
    31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
  };
}

class Transactions {
    ArrayList<Transakcija> t;
    public Transactions() {
        t = new ArrayList<>();
    }
    public List<String> readData(InputStream inputStream) {
        Scanner s = new Scanner(inputStream);
        ArrayList<String> log = new ArrayList<>();
        while (s.hasNextLine()) {
            boolean f = true;
            String vlezRed = s.nextLine();
            String[] v = vlezRed.split(";");
            String[] datum = v[0].split("/");
            if (Integer.parseInt(datum[1]) > 12) f = false;
            int god = Integer.parseInt(datum[0]);
            int mesec = Integer.parseInt(datum[1]);
            int days = Integer.parseInt(datum[2]);
            if ((god % 4 == 0)&&(god % 100 != 0) && (god % 400 == 0)) {
                if (v[1].equals("02")) {
                    if (days > Constants.DAYS[1] + 1) {
                        f = false;
                    }
                }
            } else if (days > Constants.DAYS[mesec - 1]) {
                f = false;
            }
            if (!f) {
                log.add(v[0]);
            }
            else t.add(new Transakcija(v));
        }
        return log;
    }
    public void writeData(int year, OutputStream out) {
        Collections.sort(t);
        PrintWriter printer = new PrintWriter(out);
        double balance = 0.0;
        for (Transakcija a : t) {
            if (a.getYear() == year) {
                printer.printf("%s %10.2f %s\n", a.datum, a.vrednost, a.valuta);
                balance += a.getDenari();
            }
        }
        printer.printf("Balance: %10f MKD\n", balance);
        printer.flush();
    }
}

class Transakcija implements Comparable<Transakcija> {
    String datum;
    double vrednost;
    String valuta;

    public Transakcija(String[] vlez) {
        vrednost = Double.parseDouble(vlez[1]);
        valuta = vlez[2];
        datum = vlez[0];
    }

    public int getYear() {
        String[] d = datum.split("/");
        int year = Integer.parseInt(d[0]);
        return year;
    }

    public double getDenari() {
        if (valuta.equals("USD"))
            return vrednost * Constants.USD;
        else if (valuta.equals("EUR"))
            return vrednost * Constants.EUR;
        return vrednost;
    }

    @Override
    public int compareTo(Transakcija t) {
        if (datum.equals(t.datum)) {
            if (vrednost > t.vrednost) return 1;
            else if (vrednost < t.vrednost) return -1;
            else return 0;
        } else {
            return datum.compareTo(t.datum);
        }
    }
}