public async Task <CommandResult> Handle(MakeTransferCommand command, CancellationToken cancellationToken)
{
var user = await context.Users.Include(x => x.Wallets).FirstOrDefaultAsync(x => x.Id == command.UserId);
if (!user.Wallets.Any(x => x.Id == command.Transaction.SourceId))
{
return(CommandResult.ReturnFailure());
}
if (!context.Users.Any(e => e.UserName == command.Transaction.Username) || !context.Wallets.Any(e => e.Id == command.Transaction.TargetId))
{
return(CommandResult.ReturnFailure());
}
var source = context.Wallets.FirstOrDefault(e => e.Id == command.Transaction.SourceId);
var destinationUser = context.Users.Include(e => e.Wallets).FirstOrDefault(e => e.UserName == command.Transaction.Username);
var destination = destinationUser.Wallets.FirstOrDefault(e => e.Id == command.Transaction.TargetId);
if (destination == null || source.Amount < command.Transaction.Amount)
{
return(CommandResult.ReturnFailure());
}
source.Amount -= command.Transaction.Amount;
decimal destinationAmount = CurrencyManager.CheckCurrency(command.Transaction.Amount, source.Currency, destination.Currency);
destination.Amount += destinationAmount;
var transaction = new Transaction
{
SourceWalletId = source.Id,
SourceUserId = command.UserId,
SourceUserName = user.UserName,
DestinationWalletId = destination.Id,
DestinationUserId = destinationUser.Id,
DestinationUserName = destinationUser.UserName,
Date = DateTime.Now,
Amount = command.Transaction.Amount,
Currency = source.Currency
};
context.Add(transaction);
context.SaveChanges();
return(CommandResult.ReturnSuccess());
}
public async Task <CommandResult> Handle(ReciveCashByCodeCommand command, CancellationToken cancellationToken)
{
if (!context.Users.Any(e => e.Id == command.UserId))
{
return(CommandResult.ReturnFailure());
}
var user = await context.Users.Include(x => x.Wallets).FirstOrDefaultAsync(x => x.Id == command.UserId);
if (!user.Wallets.Any(e => e.Id == command.WalletId))
{
return(CommandResult.ReturnFailure());
}
if (!context.CashByCodeRepo.Any(e => e.GeneratedCode == command.Code))
{
return(CommandResult.ReturnFailure());
}
var wallet = await context.Wallets.FirstOrDefaultAsync(e => e.Id == command.WalletId);
var cashByCode = await context.CashByCodeRepo.FirstOrDefaultAsync(e => e.GeneratedCode == command.Code);
if (cashByCode.ExpireTime < DateTime.Now)
{
context.CashByCodeRepo.Remove(cashByCode);
context.SaveChanges();
return(CommandResult.ReturnFailure());
}
wallet.Amount += CurrencyManager.CheckCurrency(cashByCode.Amount, cashByCode.Currency, wallet.Currency);
context.CashByCodeRepo.Remove(cashByCode);
context.SaveChanges();
return(CommandResult.ReturnSuccess());
}
