public async void CleanExpiredQRToken()
{
_logger.LogInformation($"{DateTime.Now}: Clean expired QR token started.");
var expiredTokens = await _QRcontext.QRTokens.Where(it => it.Expires < DateTime.UtcNow)
.ToListAsync();
_logger.LogInformation($"{DateTime.Now}: Find {expiredTokens.Count} token expired.");
_QRcontext.RemoveRange(expiredTokens);
_QRcontext.SaveChanges();
_logger.LogInformation($"{DateTime.Now}: Clean expired QR token finished.");
}
public async Task <QRToken> PermitByToken(string token, int uid)
{
var item = await _context.QRTokens.FirstOrDefaultAsync(it => it.Token == token);
if (item == null || item.Expires < DateTime.UtcNow)
{
return(null);
}
item.Status = 1;
item.UserId = uid;
_context.QRTokens.Update(item);
_context.SaveChanges();
return(item);
}