public async Task <ExchangeRateProviderModel> FetchRateAsync(string baseCurrency, string counterCurrency)
{
string apiKey = _apiKey;
string code = $"{baseCurrency}_{counterCurrency}";
string requestUri = $"{_uri}?q={code}&compact=ultra&apiKey={apiKey}";
string json;
using (HttpClient client = new HttpClient())
{
json = await client.GetStringAsync(requestUri);
}
Dictionary <string, decimal> jsonObject = JsonConvert.DeserializeObject <Dictionary <string, decimal> >(json);
decimal rate = jsonObject[code];
ExchangeRateProviderModel result = new ExchangeRateProviderModel(ProviderName, baseCurrency, counterCurrency, rate, rate);
return(result);
}
public Task <ExchangeRateProviderModel> FetchRateAsync(string baseCurrency, string counterCurrency)
{
var result = new ExchangeRateProviderModel(ProviderName, baseCurrency, counterCurrency, DEFAULT_VALUE, DEFAULT_VALUE);
return(Task.FromResult(result));
}