private static CoffeeMachine GetCoffeeMachine()
{
string connectionstring = ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString;
using (SqlConnection connection = new SqlConnection(connectionstring))
{
connection.Open();
string command = "select * from Storage";
SqlCommand com = new SqlCommand(command, connection);
CoffeeMachine cm = null;
SqlDataReader reader = com.ExecuteReader();
if (reader.HasRows)
{
while (reader.Read())
{
double water = (double)reader["Water"];
double sugar = (double)reader["Sugar"];
double coffee = (double)reader["Coffee"];
cm = new CoffeeMachine(water, sugar, coffee);
}
}
reader.Close();
return(cm);
}
}
public static void Buy(Coffee c, CoffeeMachine cm)
{
string connectionstring = ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString;
using (SqlConnection connection = new SqlConnection(connectionstring))
{
connection.Open();
if (c.WaterQuantity <= cm.Water && c.SugarQuantity <= cm.Sugar && c.CoffeeQuantity <= cm.Coffee)
{
cm.Water -= c.WaterQuantity;
cm.Sugar -= c.SugarQuantity;
cm.Coffee -= c.CoffeeQuantity;
cm.MoneyInMachine -= c.Price;
string updateQuerry = $"update Storage set water = {cm.Water}, sugar = {cm.Sugar}, coffee = {cm.Coffee}";
SqlCommand com = new SqlCommand(updateQuerry, connection);
com.ExecuteNonQuery();
}
}
}
private static List <Coffee> GetAvailableCoffees(CoffeeMachine cm)
{
List <Coffee> coffees = new List <Coffee>();
string connectionstring = ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString;
using (SqlConnection connection = new SqlConnection(connectionstring))
{
connection.Open();
string command = "select * from Coffees";
SqlCommand com = new SqlCommand(command, connection);
SqlDataReader reader = com.ExecuteReader();
if (reader.HasRows)
{
while (reader.Read())
{
int id = (int)reader["ID"];
int price = (int)reader["Price"];
if (cm.MoneyInMachine >= price)
{
coffees.Add(new Coffee(id, price));
}
}
}
reader.Close();
}
foreach (var item in coffees.ToList()) //removing those coffees which cant be prepared because of ingrediend loss
{
if (item.WaterQuantity > cm.Water || item.SugarQuantity > cm.Sugar || item.CoffeeQuantity > cm.Coffee)
{
coffees.Remove(item);
}
}
return(coffees);
}
public static void Start() //method for communication with customer
{
ConsoleKeyInfo key;
CoffeeMachine cm = GetCoffeeMachine();
if (cm.Water < 0.1 || cm.Sugar < 0.1 || cm.Coffee < 0.1 || cm == null) //if ingredients in machine are over
{
WriteLine("There are no ingredients to prepare any coffee ");
WriteLine("We appologise for tecnical inconviniances ");
WriteLine("Press any key to continue");
ReadKey();
return;
}
WriteLine("\t\t**** Welcome To My CoffeeMachine ****");
WriteLine("Only coins 50 , 100 , 200 and 500 are available !");
WriteLine("Press any key to start !");
ReadKey();
Clear();
do
{
WriteLine($"Press '1' to insert a coin or '0' to make order .. (Money in Machine - {cm.MoneyInMachine})");
WriteLine("Press 'E' to exit !");
key = ReadKey();
switch (key.Key)
{
case (ConsoleKey.E):
if (cm.MoneyInMachine == 0)
{
return;
}
else
{
WriteLine($"\nTake You money ` {cm.MoneyInMachine}"); //return customers money if it exists
}
return;
case (ConsoleKey.NumPad1):
case (ConsoleKey.D1):
WriteLine("\nEnter the value of coin (50,100,200,500)");
int coinvalue;
bool ParseSucceeded = Int32.TryParse(ReadLine(), out coinvalue);
while ((!(coinvalue == 50 || coinvalue == 100 || coinvalue == 200 || coinvalue == 500)) || !ParseSucceeded) //check correctness of imput
{
WriteLine("Only coins 50 , 100 , 200 and 500 are available !");
WriteLine("Enter proper value !");
ParseSucceeded = Int32.TryParse(ReadLine(), out coinvalue);
}
User.InsertCoin(coinvalue, cm);
break;
case (ConsoleKey.NumPad0):
case (ConsoleKey.D0):
if (cm.MoneyInMachine == 0)
{
WriteLine("\nThere is no money in Machine !");
System.Threading.Thread.Sleep(1100);
break;
}
List <Coffee> availablecoffees = GetAvailableCoffees(cm);
if (availablecoffees.Count == 0)
{
WriteLine("\nNo coffees available !");
break;
}
Clear();
WriteLine($"You can buy the following coffees... (You have {cm.MoneyInMachine}$) \n");
foreach (var coffee in availablecoffees)
{
WriteLine($"CoffeeNumber - {coffee.ID} , Price - {coffee.Price}$");
}
WriteLine("\nEnter the number of the coffee you want");
int number;
bool parsed = int.TryParse(ReadLine(), out number);
while (!parsed)
{
WriteLine("Type only the Number !");
parsed = int.TryParse(ReadLine(), out number);
}
foreach (var cof in availablecoffees)
{
if (number == cof.ID)
{
User.Buy(cof, cm);
WriteLine($"Thank you ! your change is {cm.MoneyInMachine}$ ");
WriteLine("Press Any key to continue ");
ReadKey();
return;
}
}
WriteLine("Wrong Number !!!"); //inform the customer that he inserted wrong coffee number
break;
default:
WriteLine("\nPress 1 or 2 or 'e' !!!\n");
System.Threading.Thread.Sleep(2500);
break;
}
} while (true);
}
static void Main(string[] args)
{
CoffeeMachine cm = new CoffeeMachine();
cm.CreateOrder(1.00M, Beverage.Coffee, true);
}
public static void InsertCoin(int amount, CoffeeMachine cm)
{
cm.MoneyInMachine += amount;
}