/// <sell>
/// This method takes from the console information for a sell.
/// (buyer nickname, drug name, drug quantity)
/// It decreases the quantity on the specified drug from the database with the specified quantity,
/// increases the balance with the sell price of the drug multiplied by the selected quantity,
/// and increases the dealer's 'money_brought_this_month'.
/// </sell>
public void Sell()
{
Dealer dealer;
Buyer buyer;
Drug drug;
int quantity;
try
{
Dictionary <string, string> dict = CommandReader.Sell();
OutputPrinter.Connecting();
if (dict["bNickname"] == "" || dict["drugName"] == "" || dict["quantity"] == "")
{
throw new InvalidOperationException(ConstantStrings.Blank);
}
try
{
buyer = c.Buyers.Single(e => e.Nickname == dict["bNickname"]);
}
catch (Exception)
{
throw new InvalidOperationException(ConstantStrings.Buyer + " " + ConstantStrings.NotFound);
}
dealer = c.Dealers.Single(e => e.Id == buyer.DealerId);
try
{
drug = c.Drugs.Single(e => e.Name == dict["drugName"]);
}
catch (Exception)
{
throw new InvalidOperationException(ConstantStrings.Drug + " " + ConstantStrings.NotFound);
}
try
{
quantity = int.Parse(dict["quantity"]);
}
catch (Exception)
{
throw new InvalidOperationException(ConstantStrings.Quantity + " " + ConstantStrings.ValidNumber);
}
if (quantity <= 0)
{
throw new InvalidOperationException(ConstantStrings.Quantity + " " + ConstantStrings.PositiveNumber);
}
if (quantity > drug.Quantity)
{
throw new InvalidOperationException(ConstantStrings.NotEnough + $" {drug.Name}!");
}
double price = drug.Sell_Price * quantity;
money.Money_Amount += price;
dealer.Money_Brought_This_Month += price;
Sel(drug, quantity);
OutputPrinter.Done();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
OutputPrinter.InvalidCommand();
}
}