private void UpdateLatest(TeleBot bot, TelegramSubscription subscription)
{
try
{
foreach (var coinId in subscription.LastSignificantPrice.Keys)
{
var latest = bot.Ctb.Exchanges[subscription.ExchangeId][coinId]?.Clone( );
while (latest?.Average == 0)
{
latest = bot.Ctb.Exchanges[subscription.ExchangeId][coinId]?.Clone( );
}
if (latest != null)
{
PriceChanges[coinId.ToString( )] = latest - subscription.LastSignificantPrice[coinId];
}
else
{
PriceChanges[coinId.ToString( )] = null;
}
CurrentPrice[coinId.ToString( )] = latest;
}
}
catch (Exception e)
{
Logger.Error(e);
}
}
private void SendSubscriptionReply(
TelegramSubscription subscription,
CryptoCoin oldValue,
CryptoCoin newValue
)
{
if (oldValue is null)
{
return;
}
var change = newValue - oldValue;
var builder = new StringBuilder( );
builder
.AppendLine($"{subscription.Exchange.Name,-14} {newValue.Symbol}")
.AppendLine($"Current Price: {subscription.Exchange[newValue.Id].Average:C}")
.AppendLine($"Change: {change.Value.ToCurrency ( )}")
.AppendLine($"Change %: {change.Percentage:P}")
.AppendLine($"in {change.TimeDiff:dd\\:hh\\:mm\\:ss}");
bot.SendTextMessageAsync(
subscription.ChatId,
$"```\n{builder}\n```", ParseMode.Markdown
);
}
private void StartSubscription(CryptoExchangeBase exchange, TeleSubscription sub)
{
var subscription = new TelegramSubscription(exchange, sub);
subscription.Changed += SendSubscriptionReply;
subscription.Changed += async(s, o, n) => await UpdateSubscriptionInDb(s, n).ConfigureAwait(false);
exchange.Subscribe(subscription);
lock (subscriptionLock)
Subscriptions.Add(subscription);
}
private static Task UpdateSubscriptionInDb(
TelegramSubscription subscription,
CryptoCoin coin
)
{
UnitOfWork.Do(u =>
{
var ccv = coin.ToCryptoCoinValue(subscription.ExchangeId);
u.Subscriptions.UpdateCoin(subscription.Id, ccv);
}
);
return(Task.CompletedTask);
}
public void SubOnUpdated(TelegramSubscription sub, CryptoCoin _, CryptoCoin __) =>
Send("TeleSubscriptionUpdates", new TeleBotSubscriptionSummary(Bot, sub.Id));
