/// <summary>
/// The add package payment transaction.
/// </summary>
/// <param name="packageId">
/// The package id.
/// </param>
/// <returns>
/// The <see cref="Tuple"/>.
/// </returns>
/// <exception cref="InvalidOperationException">
/// Balance cannot be negative.
/// </exception>
public Tuple<Package, decimal> AddPackagePaymentTransaction(int packageId)
{
using (var context = new ShopAnyWareSql())
{
var package = context.PackagesWithUserAndWallet().Single(p => p.Id.Equals(packageId));
var newTransaction = Transaction.CreatePackagePaymentTransaction(package);
var wallet = package.User.Wallet;
wallet.PackagePayment(newTransaction.OperationAmount);
var brokenRules = wallet.GetBrokenRules();
if (brokenRules.Any())
{
throw new InvalidOperationException("Wallet amount can't be negative");
}
package.ChangePackageStatus(PackageStatus.Paid);
context.Packages.Attach(package);
context.Entry(package).State = System.Data.EntityState.Modified;
context.Transactions.Add(newTransaction);
context.SaveChanges();
return new Tuple<Package, decimal>(package, wallet.Amount);
}
}
