private async Task <InvestmentOrderResult> PlaceTradeInvestment(InvestmentOrder order, Wallet wallet)
{
var resource = await _context.TradeAssets.FindAsync(order.ProductId);
if (resource?.Open is null)
{
return(new InvestmentOrderResult
{
Errors = new[] { "Unavailable investment option." }
});
}
var investment = new Investment
{
Description = resource.Symbol,
Quantity = order.Quantity,
AssetId = resource.Id,
Value = order.Quantity * resource.Open.Value,
Wallet = wallet
};
_context.Add(investment);
await _context.SaveChangesAsync();
return(new InvestmentOrderResult
{
Success = true
});
}
private async Task <InvestmentOrderResult> PlaceCryptoInvestment(InvestmentOrder order, Wallet wallet)
{
var resource = await _context.CryptoCoins.FindAsync(order.ProductId);
if (resource is null || !decimal.TryParse(resource.PriceUsd, out var price))
{
return(new InvestmentOrderResult
{
Errors = new[] { "Unavailable investment option." }
});
}
var investment = new Investment
{
Description = resource.AssetId,
Quantity = order.Quantity,
AssetId = resource.Id,
Value = order.Quantity * price,
Wallet = wallet
};
_context.Add(investment);
await _context.SaveChangesAsync();
return(new InvestmentOrderResult
{
Success = true
});
}
public async Task <InvestmentOrderResult> PlaceInvestmentOrder(InvestmentOrder order)
{
var user = await _userManager.FindByIdAsync(order.UserId);
if (user is null)
{
return(new InvestmentOrderResult
{
Errors = new[] { "Invalid user." }
});
}
var wallet = await _context.Wallets.SingleOrDefaultAsync(w => w.UserId == user.Id);
if (wallet is null)
{
wallet = new Wallet
{
User = user
};
_context.Add(wallet);
await _context.SaveChangesAsync();
}
if (order.IsCrypto)
{
return(await PlaceCryptoInvestment(order, wallet));
}
return(await PlaceTradeInvestment(order, wallet));
}