public async Task BuyLotteryTicketAsync(BuyLotteryTicketDto lotteryTicketDto, UserAndOrganizationDto userOrg)
{
var applicationUser = await _userService.GetApplicationUserAsync(userOrg.UserId);
var lotteryDetails = await GetLotteryDetailsAsync(lotteryTicketDto.LotteryId, userOrg);
if (lotteryDetails is null || applicationUser is null)
{
return;
}
if (lotteryTicketDto.Tickets <= 0)
{
await AddKudosLogForCheatingAsync(userOrg, lotteryDetails.EntryFee, applicationUser);
throw new LotteryException("Thanks for trying - you were charged double Kudos for this without getting a ticket.");
}
if (applicationUser.RemainingKudos < lotteryDetails.EntryFee * lotteryTicketDto.Tickets)
{
throw new LotteryException("User does not have enough kudos for the purchase.");
}
if (DateTime.UtcNow > lotteryDetails.EndDate)
{
throw new LotteryException("Lottery has already ended.");
}
var kudosLog = new AddKudosLogDto
{
ReceivingUserIds = new List <string> {
userOrg.UserId
},
PointsTypeId = await _kudosService.GetKudosTypeIdAsync(KudosTypeEnum.Minus),
MultiplyBy = lotteryTicketDto.Tickets * lotteryDetails.EntryFee,
Comment = $"{lotteryTicketDto.Tickets} ticket(s) for lottery {lotteryDetails.Title}",
UserId = userOrg.UserId,
OrganizationId = userOrg.OrganizationId
};
await _kudosService.AddLotteryKudosLogAsync(kudosLog, userOrg);
if (applicationUser.RemainingKudos < 0)
{
kudosLog.PointsTypeId = await _kudosService.GetKudosTypeIdAsync(KudosTypeEnum.Refund);
await _kudosService.AddRefundKudosLogsAsync(new List <AddKudosLogDto> {
kudosLog
});
}
else
{
for (var i = 0; i < lotteryTicketDto.Tickets; i++)
{
_participantsDbSet.Add(MapNewLotteryParticipant(lotteryTicketDto, userOrg));
}
}
await _uow.SaveChangesAsync(applicationUser.Id);
await _kudosService.UpdateProfileKudosAsync(applicationUser, userOrg);
}