public ShoppingCartItemDto AddCartItem(string email, ShoppingCartItemInputModel shoppingCartItemItem)
{
var productIdentifier = shoppingCartItemItem.ProductIdentifier;
if (!CryptocurrencyHelper.AllowedCurrencies.Contains(productIdentifier.ToLower()))
{
throw new InvalidProductIdentifierException();
}
var response = Client.GetAsync($"https://data.messari.io/api/v1/assets/" +
$"{productIdentifier}/metrics?fields=market_data/price_usd").Result;
var data = response.DeserializeJsonToObject <CryptoCurrencyResponse>(true).Result;
return(_shoppingCartRepository.AddCartItem(email, shoppingCartItemItem, data.PriceInUsd));
}
public async Task AddCartItem(string email, ShoppingCartItemInputModel shoppingCartItem)
{
var identifier = shoppingCartItem.ProductIdentifier;
if (identifier.ToUpper() != "BTC" && identifier.ToUpper() != "ETH" && identifier.ToUpper() != "USDT" && identifier.ToUpper() != "XMR")
{
throw new ResourceNotFoundException("Invalid product identifier.");
}
// Call the external API using the product identifier as an URL parameter to
string URL = "https://data.messari.io/api/v1/assets/" + shoppingCartItem.ProductIdentifier + "/metrics";
string urlParameters = "?fields=id,symbol,name,slug,market_data/price_usd";
HttpClient client = new HttpClient();
client.BaseAddress = new Uri(URL);
// Add an Accept header for JSON format.
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json")
);
// List data response.
var response = await client.GetAsync(urlParameters);
if (response.IsSuccessStatusCode)
{
// Receive the current price in USD for this particular cryptocurrency
// Deserialize the response to a CryptoCurrencyDto model
var responseObject = await HttpResponseMessageExtensions.DeserializeJsonToObject <CryptoCurrencyDto>(response, true);
client.Dispose();
_shoppingCartRepository.AddCartItem(email, shoppingCartItem, responseObject.PriceInUsd);
}
else
{
throw new Exception("Response failed to external API.");
}
}
public void AddCartItem(string email, ShoppingCartItemInputModel shoppingCartItemItem)
{
float priceInUsd = _cryptoCurrencyService.GetCryptocurrencyPrice(shoppingCartItemItem.ProductIdentifier).Result;
_shoppingCartRepository.AddCartItem(email, shoppingCartItemItem, priceInUsd);
}