public void GiveChange(double change)
{
List <CashMoney> money = new List <CashMoney>();
List <CashMoney> changedMoney = new List <CashMoney>();
try
{
using (var db = new VendMachineDbContext())
{
money = db.Money.ToList <CashMoney>();
changedMoney = CalculateMinimum(money, change);
Console.WriteLine("Change: ");
for (int i = 0; i < changedMoney.Count; i++)
{
CashMoney coinFromChange = changedMoney[i];
Console.Write(changedMoney[i] + " ");
CashMoney cashMoney = db.Money.Where(x => x.MoneyValue == coinFromChange.MoneyValue).FirstOrDefault();
cashMoney.Quantity -= coinFromChange.Quantity;
db.Entry(cashMoney).State = EntityState.Modified;
db.SaveChanges();
}
log.Info("GIVE Change success");
}
}
catch (Exception)
{
log.Error("Fail database connection-GIVE Change");
}
}
public bool Refill()
{
try
{
IList <Product> productQuantity = GetProductsToRefill();
using (var context = new VendMachineDbContext())
{
foreach (Product prod in productQuantity)
{
prod.Quantity = 10;
context.Entry(prod).State = EntityState.Modified;
context.SaveChanges();
}
}
log.Info("REFILL successful");
return(true);
}
catch (Exception)
{
log.Error("REFILL failed");
return(false);
}
}
public double GetProductPriceByKey(int id)
{
using (var context = new VendMachineDbContext())
{
Product p = context.Products.Where(x => x.ProductId == id).FirstOrDefault();
double price = (Double)p.Price;
return(price);
}
}
public void AddProduct(Product p)
{
try
{
using (var context = new VendMachineDbContext())
{
context.Products.Add(p);
context.SaveChanges();
}
}
catch (Exception)
{
log.Error("Db connection failed-ADD");
}
}
public void UpdateProduct(Product p)
{
try
{
using (var context = new VendMachineDbContext())
{
context.Entry(p).State = EntityState.Modified;
context.SaveChanges();
}
}
catch (Exception)
{
log.Error("Db connection failed-UPDATE");
}
}
public IList <Product> GetProducts()
{
try
{
using (var context = new VendMachineDbContext())
{
return(context.Products.ToList <Product>());;
}
}
catch (Exception)
{
log.Error("Db connection-GET Prod");
return(new List <Product>());
}
}
public void AddTransaction(Transaction t)
{
try
{
using (var db = new VendMachineDbContext())
{
db.Transactions.Add(t);
db.SaveChanges();
log.Info("Transaction Added");
}
}
catch (Exception)
{
log.Error("Db connection failed-transactions");
}
}
public void DecreaseProductQuantity(int productId)
{
try
{
using (var context = new VendMachineDbContext())
{
Product p = context.Products.Where(x => x.ProductId == productId).FirstOrDefault();
p.Quantity -= 1;
UpdateProduct(p);
}
}
catch (Exception)
{
log.Error("Db connection failed-DecreaseProd");
}
}
public void RemoveProduct(int productId)
{
try
{
using (var context = new VendMachineDbContext())
{
Product p = context.Products.Where(x => x.ProductId == productId).FirstOrDefault();
context.Products.Remove(p);
context.SaveChanges();
}
}
catch (Exception)
{
log.Error("Db connection failed-remove prod");
}
}
public void UpdateMoney(double value, int quantity)
{
try
{
using (var db = new VendMachineDbContext())
{
CashMoney cashMoney = db.Money.Where(x => x.MoneyValue == value).FirstOrDefault();
cashMoney.Quantity += quantity;
db.Entry(cashMoney).State = EntityState.Modified;
db.SaveChanges();
}
}
catch (Exception)
{
log.Error("Fail database connection\n");
}
}
public List <Transaction> GetTransactions()
{
try
{
List <Transaction> transactions = new List <Transaction>();
using (var db = new VendMachineDbContext())
{
transactions = db.Transactions.ToList <Transaction>();
}
return(transactions);
}
catch (Exception)
{
log.Error("Db connection");
return(new List <Transaction>());
}
}
public void Pay(double cost)
{
try
{
using (var db = new VendMachineDbContext())
{
Account Account = db.Accounts.Where(x => x.CardNO == cardNo).FirstOrDefault();
Account.Amount -= cost;
db.Entry(Account).State = EntityState.Modified;
db.SaveChanges();
log.Info("Payment success");
}
}
catch (Exception) {
log.Error("Db connection failed");
}
}
public IList <Product> GetProductsToRefill()
{
try
{
using (var context = new VendMachineDbContext())
{
IList <Product> productQuantity = (from product in context.Products
where (product.Quantity != 10)
select product).ToList();
return(productQuantity);
}
}
catch (Exception)
{
log.Error("FIND refill products failed");
return(new List <Product>());
}
}
private bool IsValidCard(string cardNumber, string cardPin)
{
try
{
using (var db = new VendMachineDbContext())
{
Account Account = db.Accounts.Where(x => x.CardNO == cardNumber).FirstOrDefault();
if (Account != null && Account.Pin == cardPin)
{
return(true);
}
return(false);
}
}
catch (Exception) {
log.Error("Db connection failed");
}
return(false);
}
public bool IsEnough(double cost)
{
try
{
using (var db = new VendMachineDbContext())
{
Account Account = db.Accounts.Where(x => x.CardNO == cardNo).FirstOrDefault();
if (Account.Amount >= cost)
{
return(true);
}
}
}
catch (Exception)
{
log.Error("Db connection failed");
}
return(false);
}
public bool IsValid(IList <CashMoney> money)
{
try
{
using (var db = new VendMachineDbContext())
{
IList <CashMoney> cashMoney = db.Money.ToList <CashMoney>();
foreach (CashMoney m in money)
{
if (cashMoney.Where(mon => mon.MoneyValue == m.MoneyValue).FirstOrDefault() == null)
{
return(false);
}
}
return(true);
}
}
catch (Exception)
{
log.Error("Fail database connection-IsValid");
return(false);
}
}
