public async Task <IEnumerable <CryptoCurrencyDto> > GetAvailableCryptocurrencies()
{
// Call the external API using the product identifier as an URL parameter to
string URL = "https://data.messari.io/api/v2/assets";
string urlParameters = "?fields=id,symbol,name,slug,metrics/market_data/price_usd,profile/general/overview/project_details";
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)
{
// Deserialize the response to a CryptoCurrencyDto model
var cryptoCurrencies = await HttpResponseMessageExtensions.DeserializeJsonToList <CryptoCurrencyDto>(response, true);
// Filter the list for BTC, ETH, USDT and XMR
var filteredCryptoCurrencies = cryptoCurrencies.Where(c => c.Symbol == "BTC" || c.Symbol == "ETH" || c.Symbol == "USDT" || c.Symbol == "XMR").ToList();
client.Dispose();
return(filteredCryptoCurrencies);
}
else
{
throw new ApplicationException("Request failed to external API.");
}
}
public async Task <Envelope <ExchangeDto> > GetExchanges(int pageNumber = 1)
{
HttpClient client = new HttpClient();
// Call the external API with a paginated query and get all exchanges with fields required for the ExchangeDto model
var getExhanges = "https://data.messari.io/api/v1/markets?page={pageNumber}&fields=id,exchange_name,exchange_slug,quote_asset_symbol,price_usd,last_trade_at";
client.DefaultRequestHeaders.Accept.Clear();
//client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
var response = await client.GetAsync(getExhanges);
// Deserialize the response to a list - I would advise to use the HttpResponseMessageExtensions to deserialize and flatten the response
var responseFlat = await HttpResponseMessageExtensions.DeserializeJsonToList <ExchangeDto>(response, true);
// Create an envelope and add the list to the envelope and return that
/*var envelope = new Envelope<ExchangeDto>
* {
* Items = new List<ExchangeDto>(responseFlat);
*
* };*/
//return envelope;
return(null);
}
public async Task <IEnumerable <CryptoCurrencyDto> > GetAvailableCryptocurrencies()
{
HttpClient client = new HttpClient();
// Call the external API and get all cryptocurrencies with fields required for the CryptoCurrencyDto model
var getCurrencies = "https://data.messari.io/api/v2/assets?fields=id,name,slug,symbol,metrics/market_data/price_usd,profile/general/overview/project_details";
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
var response = await client.GetAsync(getCurrencies);
// Deserializes the response to a list - I would advise to use the HttpResponseMessageExtensions to deserialize and flatten the response.
var responseFlat = await HttpResponseMessageExtensions.DeserializeJsonToList <CryptoCurrencyDto>(response, true);
// Return a filtered list where only the available cryptocurrencies BitCoin (BTC), Ethereum (ETH), Tether (USDT) and Monero (XMR) are within the list
return(responseFlat.Where(s => s.Symbol == "BTC" || s.Symbol == "ETH" || s.Symbol == "USDT" || s.Symbol == "XMR"));
}
public async Task <Envelope <ExchangeDto> > GetExchanges(int pageNumber = 1)
{
// Call the external API using the product identifier as an URL parameter to
string URL = "https://data.messari.io/api/v1/markets";
string urlParameters = "?fields=exchange_id,exchange_name,exchange_slug,quote_asset_symbol,price_usd,last_trade_at&page=" + pageNumber;
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)
{
// Deserialize the response to a ExchangeDto model
var exchanges = await HttpResponseMessageExtensions.DeserializeJsonToList <ExchangeDto>(response, true);
// Create the enveloper
var envelope = new Envelope <ExchangeDto>
{
Items = exchanges,
PageNumber = pageNumber
};
client.Dispose();
return(envelope);
}
else
{
throw new Exception("Request failed to external API.");
}
}