//We use this function to return either int 1 or 2 per session. The effect is to make the
//product list random w.r.t. this session only and prevent having too much product variety in the NPC cart.
private static int GetCountdownRandomizerValue(this HttpSessionStateBase session)
{
//returns 1 or 2 randomly based on the session countdown start time.
int milliseconds = session.GetDataFromSession <DateTime>("countdownTimeCsKey").Millisecond;
return(new System.Random(milliseconds).Next(0, 2) + 1);
}
//if countdown already started, return this value. Otherwise return int.Minvalue.
public static int GetRemainingTime(this HttpSessionStateBase session)
{
int remainingMilliseconds; // countdown time variable
DateTime countdownTime = session.GetDataFromSession <DateTime>("countdownTimeCsKey");
if (countdownTime == DateTime.MinValue)
{
remainingMilliseconds = int.MinValue;
}
else
{
TimeSpan tsRemaining = countdownTime - DateTime.Now;
remainingMilliseconds = (int)tsRemaining.TotalMilliseconds; //convert to integer for passing to view.
remainingMilliseconds = Math.Max(remainingMilliseconds, -1); //if time expired just return -1.
}
return(remainingMilliseconds);
}
//return countdown value, but also accounting for the allowed connection delay at checkout. If not extant, return int.Minvalue.
public static int GetRemainingTimeAtCheckout(this HttpSessionStateBase session)
{
int remainingMilliseconds; // countdown time variable
DateTime countdownTime = session.GetDataFromSession <DateTime>("countdownTimeCsKey");
if (countdownTime == DateTime.MinValue)
{
remainingMilliseconds = int.MinValue;
}
else
{
TimeSpan tsRemaining = countdownTime - DateTime.Now;
remainingMilliseconds = (int)tsRemaining.TotalMilliseconds; //convert to integer
remainingMilliseconds += checkoutConnToleranceMilliseconds; //any expired time value may be within the allowed tolerance, which we can add as an increment.
remainingMilliseconds = Math.Max(remainingMilliseconds, -1); //if time expired just return -1.
}
return(remainingMilliseconds);
}
//if countdown already started, return the remaining time. Otherwise return a start-time value.
public static int GetRemainingTimeOrSetDefault(this HttpSessionStateBase session)
{
int remainingMilliseconds; // countdown time variable
DateTime countdownTime = session.GetDataFromSession <DateTime>("countdownTimeCsKey");
if (countdownTime == DateTime.MinValue)
{
//set a new countdown time using a global constant.
session.SetDataToSession <string>("countdownTimeCsKey", DateTime.Now.AddMilliseconds(shoppingTimeMilliseconds));
remainingMilliseconds = shoppingTimeMilliseconds;
}
else
{
TimeSpan tsRemaining = countdownTime - DateTime.Now;
remainingMilliseconds = (int)tsRemaining.TotalMilliseconds; //convert to integer for passing to view.
remainingMilliseconds = Math.Max(remainingMilliseconds, -1); //if time expired just return -1.
}
return(remainingMilliseconds);
}
public static bool GetGameInProgress(this HttpSessionStateBase session)
{
return(session.GetDataFromSession <bool>("gameInProgress"));
}
//flag to prevent user from navigating back to checkout screen using browser navigation after starting a new game.
public static bool GetUserJustClickedCheckout(this HttpSessionStateBase session)
{
return(session.GetDataFromSession <bool>("userClickedCheckout"));
}
public static int GetLastItemAddedByNpcPlayer(this HttpSessionStateBase session)
{
return(session.GetDataFromSession <int>("lastItemAdded"));
}
public static bool GetShoppingByNpcCompleted(this HttpSessionStateBase session)
{
return(session.GetDataFromSession <bool>("shoppingCompleted"));
}