private void RaiseSendingSignalEvent(string ticker, double value)
{
var handler = SendingSignalEvent;
var args = new SendingSignalEventArgs {
Ticker = ticker, Value = value
};
handler?.Invoke(this, args);
}
private async void OnSendingSignalAsync(object sender, SendingSignalEventArgs args)
{
try
{
if (_nextSignalTime > DateTime.UtcNow)
{
return;
}
using var scope = _scopeFactory.CreateScope();
using var context = scope.ServiceProvider.GetService <ApplicationDbContext>();
var chats = await context.Chats.ToListAsync();
chats = FilterForMode(chats);
foreach (var chat in chats)
{
try
{
_nextSignalTime = DateTime.UtcNow.AddSeconds(GlobalSignalIntervalSeconds);
await _telegramClient.SendTextMessageAsync(chat.Id, $"{args.Ticker} near the level {args.Value}");
}
catch (ApiRequestException ex)
{
if (ex.ErrorCode == 403)
{
var record = await context.Chats.FirstOrDefaultAsync(x => x.Id == chat.Id);
if (record != null)
{
context.Remove(record);
}
await context.SaveChangesAsync();
}
}
}
_tinkoffClient.NextSignalTime[args.Ticker] = DateTime.UtcNow.AddSeconds(SignalIntervalSeconds);
}
catch (Exception ex)
{
_logger.LogError(ex, "An error occured while sending signal for ticker {Ticker}", args.Ticker);
}
}
