private void SimulateAssetValueChanges()
{
var notificationSubscriptions = SubscriptionsManager.Subscriptions;
var assets = _exchangeRatesProvider.GetAssets().GetAwaiter().GetResult().ToArray();
var rnd = new Random();
var changedAssetsAmount = rnd.Next(assets.Length);
for (var i = 0; i < changedAssetsAmount; i++)
{
var randomAssetInd = rnd.Next(assets.Length);
var randomAsset = assets[randomAssetInd];
var assetValue = _exchangeRatesProvider.GetAssetValue(randomAsset).GetAwaiter().GetResult();
var matchedConditions = notificationSubscriptions.Where(ns =>
ns.Predicate(assetValue) &&
ns.Asset.Equals(randomAsset, StringComparison.InvariantCultureIgnoreCase))
.ToArray();
foreach (var matchedCondition in matchedConditions)
{
AssetValueChangedEvent?.Invoke(this, new AssetValueChangedEventArgs
{
Asset = matchedCondition.Asset,
ChatId = matchedCondition.ChatId,
Value = assetValue
});
}
foreach (var cond in matchedConditions)
{
_subscriptionsManager.Unsubscribe(cond.Asset, cond.ChatId, cond.Predicate);
}
}
}
public async Task <QuoteValueCriterionSubscriptionResponse> Process()
{
decimal currentValue;
try
{
currentValue = await _exchangeRatesProvider.GetAssetValue(_asset);
var conditionAlreadyApplies = _request.Predicate(currentValue);
if (conditionAlreadyApplies)
{
return(new QuoteValueCriterionSubscriptionResponse
{
Success = false,
ResultMessage = string.Format(MessageTexts.ConditionAlreadySatisfied, currentValue)
});
}
var alreadySubscribed = await _subscriptionsManager.AlreadySubscribed(_asset, _request.ChatId, _request.Predicate);
if (alreadySubscribed)
{
return(new QuoteValueCriterionSubscriptionResponse
{
Success = true,
ResultMessage = MessageTexts.AlreadySubscribed
});
}
}
catch (Exception)
{
return(new QuoteValueCriterionSubscriptionResponse
{
Success = false,
ResultMessage = MessageTexts.ConditionCheckFailed
});
}
try
{
await _subscriptionsManager.Subscribe(_asset, _request.ChatId, _request.Predicate);
return(new QuoteValueCriterionSubscriptionResponse
{
Success = true,
ResultMessage = string.Format(MessageTexts.SubscribedSuccessfully, currentValue),
CurrentPrice = currentValue
});
}
catch (Exception e)
{
return(new QuoteValueCriterionSubscriptionResponse
{
Success = false,
ResultMessage = $"{MessageTexts.SubscriptionFailed}. {e.Message}"
});
}
}
