protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
while (!stoppingToken.IsCancellationRequested)
{
_logger.LogInformation("Worker running at: {time}", DateTimeOffset.Now);
try
{
using var scope = _serviceScopeFactory.CreateScope();
var defenderDbContext = scope.ServiceProvider.GetRequiredService <DefenderDbContext>();
var pushes = await defenderDbContext.Pushes.Include(p => p.User).Where(p => p.Pushed == null)
.ToListAsync(stoppingToken);
if (pushes.Count > 0)
{
var usersWithMinSince =
pushes.GroupBy(p => p.UserId).SelectMany(g => g.Where(x => x.Since == g.Min(y => y.Since)))
.Select(s => new { s.UserId, s.Since })
.ToList();
var userWithMinSinceForQuery = defenderDbContext.FromLocalList(usersWithMinSince);
var creditRequestsForPushQuery =
from creditRequest in defenderDbContext.CreditRequests.AsNoTracking().Include(r => r.Bank)
join userWithMinSince in userWithMinSinceForQuery on creditRequest.UserId equals
userWithMinSince.UserId
where creditRequest.OrderDate >= userWithMinSince.Since
select creditRequest;
var creditRequestsForPush = await creditRequestsForPushQuery.ToListAsync(stoppingToken);
foreach (var userCreditRequests in creditRequestsForPush.GroupBy(cr => cr.UserId))
{
var userId = userCreditRequests.Key;
var user = pushes.First(x => x.UserId == userCreditRequests.Key).User;
var creditsCount = userCreditRequests.Count();
var isMoreThenOneCredit = creditsCount > 1;
var firstCredit = userCreditRequests.First();
var pushTitle = isMoreThenOneCredit
? "Обнаружены новые кредиты!"
: "Обнаружен новый кредит!";
var pushMessage = new PushMessage
{
Aps = new PushMessageAps {
Alert = pushTitle
},
Data = new PushMessageData
{
BankName = firstCredit.Bank.Name,
BankIcoUrl = firstCredit.Bank.IcoUrl,
OrderDate = firstCredit.OrderDate,
TotalSum = firstCredit.Amount,
Text = isMoreThenOneCredit
? $"На ваше имя взято более одного кредита: {creditsCount} шт!"
: "На ваше имя взят кредит! Это были вы?"
}
};
var data = new Dictionary <string, string>
{
{ "bankName", firstCredit.Bank.Name },
{ "bankIcoUrl", firstCredit.Bank.IcoUrl },
{ "orderDate", firstCredit.OrderDate.ToLongDateString() },
{ "totalSum", firstCredit.Amount.ToString(CultureInfo.InvariantCulture) },
{
"text", isMoreThenOneCredit
? $"На ваше имя взято более одного кредита: {creditsCount} шт!"
: "На ваше имя взят кредит! Это были вы?"
}
};
var pushMessageString =
JsonConvert.SerializeObject(pushMessage, Formatting.Indented,
new JsonSerializerSettings
{
ContractResolver = new CamelCasePropertyNamesContractResolver()
});
await _notificationClient.SendAsync(new[] { user.Token }, pushTitle, data);
_logger.LogInformation(
"Push done to {Phone}, total credits: {Count} with message {Message}", user.Phone,
creditsCount, pushMessageString);
foreach (var push in pushes.Where(p => p.UserId == userId))
{
push.Pushed = push.Updated = DateTime.Now;
}
}
await defenderDbContext.SaveChangesAsync(stoppingToken);
}
}
catch (Exception e)
{
_logger.LogError(e, "Error");
}
await Task.Delay(5000, stoppingToken);
}
}