/// <summary>
/// tries to withdraw money from a client's account
/// </summary>
/// <param name="client">Client object to take data from (client's current ammount, ammount of money
/// the client wants to withdraw and the client's bank account number)</param>
public void WithdrawMoney(Client client)
{
// client does not have enough money, cancel withdrawing
if (client.AmmountToWithdraw > client.CurrentAmmount)
{
client.WithdrawOperationString = string.Format("{0} {1} {2} Negalima išmokėti",
client.BankAccountNumber, client.CurrentAmmount, client.AmmountToWithdraw);
return;
}
// client has more money than the ammount to be withdrawn
else
{
if (PossibleToWithdraw(client.AmmountToWithdraw))
{
bool success = true;
BanknoteContainer banknotes = GetBanknotes(client.AmmountToWithdraw, out success);
RemoveBanknotes(banknotes);
client.CurrentAmmount -= client.AmmountToWithdraw;
client.WithdrawOperationString = FormSuccessfullWithdrawingOperationString(client, banknotes);
}
else
{
client.WithdrawOperationString = string.Format("{0} {1} {2} Negalima išmokėti",
client.BankAccountNumber, client.CurrentAmmount, client.AmmountToWithdraw);
}
}
}
/// <summary>
/// loops through all Banknote objects in a BanknoteContainer and writes formatted banknote strings to
/// a StreamWriter
/// </summary>
/// <param name="writer">StreamWriter to write to</param>
/// <param name="banknotes">BanknoteContainer containing banknotes to print</param>
static void PrintBanknotes(StreamWriter writer, BanknoteContainer banknotes)
{
for (int i = 0; i < banknotes.Count; i++)
{
writer.WriteLine("{0}", banknotes.GetBanknote(i).ToString());
}
}
/// <summary>
/// creates BanknoteCount object for each banknote in the data arrays
///
/// EXAMPLE DATA ARRAYS:
/// banknoteType: ["500", "200", "100"]
/// banknoteCount: ["10", "7", "15"]
/// this means there are 10 banknotes worth 500, 7 banknotes worth 200 and 15 banknotes worth 100
/// </summary>
/// <param name="banknoteType">array containing banknote wealth values</param>
/// <param name="banknoteCount">array containing banknote count values</param>
/// <param name="banknotes">BanknoteContainer to store created BanknoteCount objects in</param>
static void CreateBankotes(string[] banknoteType, string[] banknoteCount, BanknoteContainer banknotes)
{
for (int i = 0; i < NumberOfBanknoteTypes; i++)
{
banknotes.AddBanknote(new BanknoteCount(int.Parse(banknoteType[i]),
int.Parse(banknoteCount[i])));
}
}
/// <summary>
/// removes banknotes from the ATM
/// called only after a successfull withdraw operation
/// </summary>
/// <param name="banknotes">BanknoteContainer containing BanknoteCount objects with the number of
/// banknotes to remove from the ATM</param>
private void RemoveBanknotes(BanknoteContainer banknotes)
{
for (int i = 0; i < banknotes.Count; i++)
{
Banknote banknote = banknotes.GetBanknote(i);
int banknoteIndex = Banknotes.BanknoteIndex(banknote);
Banknotes.InsertBanknote(banknoteIndex,
(Banknotes.GetBanknote(banknoteIndex) as BanknoteCount) - (banknote as BanknoteCount));
}
}
/// <summary>
/// calculates the ammount of money in BanknoteContainer
/// </summary>
/// <param name="banknotes">BanknoteContainer to take data from</param>
/// <returns>the ammount of money from the banknotes</returns>
public int CalculateMoney(BanknoteContainer banknotes)
{
int ammount = 0;
for (int i = 0; i < banknotes.Count; i++)
{
BanknoteCount banknote = banknotes.GetBanknote(i) as BanknoteCount;
ammount += banknote.Count * banknote.Wealth;
}
return(ammount);
}
/// <summary>
/// writes initial data to a seperate text file formatted as two tables:
/// one for banknote data and another one for client data
/// </summary>
/// <param name="fileName">file name to write data to</param>
/// <param name="banknotes">BanknoteContainer containing initial banknote data</param>
/// <param name="clients">ClientContainer containing initial client data</param>
static void PrintInitialDataToTextFile(string fileName, BanknoteContainer banknotes, ClientContainer clients)
{
using (StreamWriter writer = new StreamWriter(fileName)) {
writer.WriteLine("Banknotes:");
writer.WriteLine("{0, -20} {1, -20}", "Banknote wealth", "Banknote count");
PrintBanknotes(writer, banknotes);
writer.WriteLine();
writer.WriteLine("Clients:");
writer.WriteLine("{0, -20} {1, -20} {2, -20}",
"Bank account number", "Current ammount", "Ammount to withdraw");
PrintClients(writer, clients);
}
}
/// <summary>
/// creates information string from a successfull withdraw operation:
/// client's bank account number, banknotes the client just received and the ammount of money client has left
/// </summary>
/// <param name="client">Client who performed withdraw operation</param>
/// <param name="banknotes">banknotes the client received from the ATM</param>
/// <returns>formatted withdrawing operation text</returns>
private string FormSuccessfullWithdrawingOperationString(Client client, BanknoteContainer banknotes)
{
string operation = string.Format("{0} {1}",
client.BankAccountNumber, client.CurrentAmmount + CalculateMoney(banknotes), client.AmmountToWithdraw);
for (int i = 0; i < banknotes.Count; i++)
{
BanknoteCount banknote = banknotes.GetBanknote(i) as BanknoteCount;
operation = string.Format("{0}-{1}*{2}", operation, banknote.Wealth, banknote.Count);
}
operation = string.Format("{0} = {1}", operation, client.CurrentAmmount);
return(operation);
}
public static int NumberOfBanknoteTypes = 6; // number of different banknotes in the data file
/// <summary>
/// entry point of the program
/// </summary>
/// <param name="args">arguments for the program</param>
static void Main(string[] args)
{
Console.OutputEncoding = Encoding.UTF8;
BanknoteContainer banknotes = new BanknoteContainer(NumberOfBanknoteTypes);
ClientContainer clients = new ClientContainer(100);
ReadData("U3.txt", banknotes, clients);
PrintInitialDataToTextFile("pradDuom.txt", banknotes, clients);
ATM atm = new ATM(banknotes);
PerformWithdrawOperations(atm, clients);
PrintResults("rezult.txt", atm, clients);
}
/// <summary>
/// tries to get enough right banknotes for a withdraw operation
/// this method does not remove any banknotes from the ATM, it only creates copies of the banknotes
/// to withdraw
/// </summary>
/// <param name="ammount">ammount of money to withdraw</param>
/// <param name="success">boolean indicating wether there was enough right banknotes to withdraw</param>
/// <returns>BanknoteContainer of banknotes to be withdrawn (will be used only is success = true)</returns>
private BanknoteContainer GetBanknotes(int ammount, out bool success)
{
BanknoteContainer banknotes = new BanknoteContainer(Program.NumberOfBanknoteTypes);
for (int i = 0; i < Banknotes.Count; i++)
{
BanknoteCount banknote = Banknotes.GetBanknote(i) as BanknoteCount;
int numberOfBanknotesRequired = ammount / banknote.Wealth;
int availableBanknotes = (banknote.Count >= numberOfBanknotesRequired)
? numberOfBanknotesRequired : banknote.Count;
banknotes.AddBanknote(new BanknoteCount(banknote.Wealth, availableBanknotes));
ammount -= availableBanknotes * banknote.Wealth;
}
success = ammount == 0;
return(banknotes);
}
/// <summary>
/// reads banknote and client data from a given file and stores it in BanknoteContainer and ClientContainer
/// </summary>
/// <param name="fileName">file name to read from</param>
/// <param name="banknotes">BanknoteContainer to store Banknote objects in</param>
/// <param name="clients">ClientContainer to store Client objects in</param>
static void ReadData(string fileName, BanknoteContainer banknotes, ClientContainer clients)
{
using (StreamReader reader = new StreamReader(fileName)) {
CreateBankotes(reader.ReadLine().Split(' '), reader.ReadLine().Split(' '), banknotes);
int clientCount = int.Parse(reader.ReadLine());
for (int i = 0; i < clientCount; i++)
{
string line = reader.ReadLine();
string bankAccountNumber = line.Substring(0, 4);
string[] data = line.Substring(4).Split(new char[] { ' ' },
StringSplitOptions.RemoveEmptyEntries);
int currentAmmount = int.Parse(data[0]);
int ammountToWithdraw = int.Parse(data[1]);
clients.AddClient(new Client(bankAccountNumber, currentAmmount, ammountToWithdraw));
}
}
}
} // banknotes in the ATM
/// <summary>
/// class constructor
/// </summary>
/// <param name="banknotes">BanknoteContainer containing all banknotes in the ATM</param>
public ATM(BanknoteContainer banknotes)
{
Banknotes = banknotes;
}