/**
  * MoneyTransactionRecorder
  * Memorizza un insieme di transazioni economiche
  *
  * @author A. Luchetta
  * @version 7-Nov-2007
  */
  
public class MoneyTransactionRecorder
{
   private static final String IN  = "versamento";
   private static final String OUT = "prelevamento";
   
   private static final int INITIAL_SIZE = 1;

   private MoneyTransaction[] transactions;
   private int transactionsSize;
   private double totalMoneyInEuro; 

   public MoneyTransactionRecorder(double initialMoneyInEuro)
   {
      transactions = new MoneyTransaction[INITIAL_SIZE];
      transactionsSize = 0;
      totalMoneyInEuro = initialMoneyInEuro;
   }

   public MoneyTransactionRecorder()
   {
      this(0);
   }

   public void addTransaction(String aDate,
                                   double someUnits,
                                   String aCurrency,
                                   double anEuroConversionRate,
                                   String direction)
   {
      if (transactionsSize >= transactions.length)
         transactions = resize(transactions, 2 * transactions.length);

      MoneyTransaction tmp = new MoneyTransaction(aDate, someUnits, aCurrency, anEuroConversionRate, direction);

      transactions[transactionsSize] = tmp;
      transactionsSize++;

      if (direction.equalsIgnoreCase(IN))
         totalMoneyInEuro += tmp.getConvertedToEuroUnits();
      else if (direction.equalsIgnoreCase(OUT))
         totalMoneyInEuro -= tmp.getConvertedToEuroUnits();
      else
         tmp.addComment("Operazione errata: non contabilizzata");
   }

   public double getTotalMoneyInEuro()
   {
      return totalMoneyInEuro;
   }

   public String toString()
   {
      String tmpString = "";
      for (int i = 0; i < transactionsSize; i++)
         tmpString = tmpString + transactions[i] + "\n";

      return tmpString;
   }

   private static MoneyTransaction[] resize(MoneyTransaction[] mt, int newLength)
   {
      MoneyTransaction[] newMt = new MoneyTransaction[newLength];

      for (int i = 0; i < mt.length; i++)
         newMt[i] = mt[i];

      return newMt;
   }

}