public void UpdateSubscription(string userId)
{
SymbolSubscriptions.RemoveAll(x => x.UserId == userId);
var subscriptions = _subscriptionManager.GetSubscriptionsByUser(userId);
foreach (var subscription in subscriptions)
{
SymbolSubscriptions.Add(subscription);
}
}
public void ResetCache(string userId, string symbolId = null)
{
var subscriptions = SymbolSubscriptions.Where(x => x.UserId == userId);
if (!string.IsNullOrEmpty(symbolId))
{
subscriptions = subscriptions.Where(x => x.SymbolId == symbolId).ToList();
}
foreach (var subscription in subscriptions)
{
subscription.LastNotifiedPrice = decimal.Zero;
subscription.LastNotifiedDate = DateTime.Now;
}
}
private void NotifyPriceAsync(SymbolModel symbol, decimal currentPrice)
{
var symbolSubscriptions = SymbolSubscriptions.Where(x => x.SymbolId == symbol.Id);
foreach (var symbolSubscription in symbolSubscriptions)
{
if (symbolSubscription.LastNotifiedPrice == decimal.Zero)
{
symbolSubscription.LastNotifiedPrice = currentPrice;
symbolSubscription.LastNotifiedDate = DateTime.Now;
}
else
{
decimal userPrice = symbolSubscription.LastNotifiedPrice;
decimal userChange = (currentPrice - userPrice) / userPrice;
if (Math.Abs(userChange) >= symbolSubscription.MinimumChange)
{
var user = Users.FirstOrDefault(x => x.Id == symbolSubscription.UserId);
string message = string.Format("{0}: {1} [{2}%{3}]",
symbol.FriendlyName,
currentPrice,
(userChange * 100).ToString("+0.00;-0.00;0"),
GetTimeSpanString(DateTime.Now - symbolSubscription.LastNotifiedDate));
_userManager.SendMessage(user.Id, message);
// Console.WriteLine("Notified {0}: {1}", user.Id, message);
symbolSubscription.LastNotifiedPrice = currentPrice;
symbolSubscription.LastNotifiedDate = DateTime.Now;
_subscriptionManager.UpdateAsNotified(user.Id, symbol.Id, currentPrice, DateTime.Now);
}
}
}
}
