public async Task <ResponseHelper <CurrencyPurchase> > BuyCurrencyAsync(CurrencyPurchase purchase)
{
CurrencyQuotation currencyQuotation = await GetCurrencyQuotationAsync(purchase.ISOCode);
purchase.Amount /= currencyQuotation.PurchaseRate;
CurrencyApiSetting currencySetting = CurrenciesSettings.CurrenciesApiSettings
.FirstOrDefault(c => c.ISOCode == purchase.ISOCode);
decimal monthlyAmmout = GetUserMonthlyAmmount(purchase);
List <string> errors = ValidatePurchase(purchase, currencySetting.Limit, monthlyAmmout);
if (errors.Count > 0)
{
return(new ResponseHelper <CurrencyPurchase>(errors, statusCode: 400));
}
else
{
purchase.DateTime = DateTime.Now;
UnitOfWork.GenericRepository <CurrencyPurchase>().Add(purchase);
await UnitOfWork.CompleteAsync();
return(new ResponseHelper <CurrencyPurchase>(purchase));
}
}
public async Task <CurrencyQuotation> GetCurrencyQuotationAsync(string ISOCode)
{
CurrencyApiSetting currencySetting = CurrenciesSettings.CurrenciesApiSettings
.FirstOrDefault(c => c.ISOCode == ISOCode);
JObject response = await _currenciesExternalService.GetCurrencyExchangeRateAsync(currencySetting.Url);
CurrencyQuotation currencyQuote = new CurrencyQuotation()
{
ISOCode = currencySetting.ISOCode,
PurchaseRate = (decimal)response.SelectToken($"response{currencySetting.PurchaseRateField}") * currencySetting.QuoteRate,
SaleRate = (decimal)response.SelectToken($"response{currencySetting.SaleRateField}") * currencySetting.QuoteRate,
LastUpdate = DateTime.Now
};
return(currencyQuote);
}