public void Subscribe(Subscription subsciption)
{
//defensive programming
if (subsciption == null) throw new ArgumentNullException("subsciption");
//logging
_loggingService.Log(string.Format("Subscribtion time: {0}", DateTime.Now));
//exception handling
try
{
//transaction
using (var scope = new TransactionScope())
{
//reries
var retries = 3;
var succeeded = false;
while (!succeeded)
{
try
{
subsciption.Game.IsBought = true;
var rentalTime = subsciption.EndDate.Subtract(subsciption.StartDate);
var numberOfDays = (int) rentalTime.TotalDays;
var pointsPerDay = subsciption.Game.IsPremium ? 2 : 1;
var points = numberOfDays*pointsPerDay;
subsciption.User.Points += points;
scope.Complete();
succeeded = true;
}
catch
{
if (retries >= 0)
retries--;
else
throw;
}
}
}
}
catch (Exception ex)
{
//handle exception
_loggingService.Log(string.Format("Exception: {0}", ex.Message));
}
_loggingService.Log(string.Format("Subscribtion completed: {0}", DateTime.Now));
}
public ActionResult PayByMoney(int id)
{
_paymentsReportingService.ReportPayment();
var game = _gamesDataAccess.GetById(id);
var subscription = new Subscription
{
User = _gamesDataAccess.User,
Game = game,
StartDate = DateTime.Today,
EndDate = DateTime.Today.AddDays(7)
};
_subscriptionService.Subscribe(subscription);
return RedirectToAction("Index");
}
public void Subscribe(Subscription subsciption)
{
//subscription != null
//logging
//try
//transaction
subsciption.Game.IsBought = true;
var rentalTime = subsciption.EndDate.Subtract(subsciption.StartDate);
var numberOfDays = (int)rentalTime.TotalDays;
var pointsPerDay = subsciption.Game.IsPremium ? 2 : 1;
var points = numberOfDays * pointsPerDay;
subsciption.User.Points += points;
//logging
}
