/// <summary>
/// Queries the API endpoint asynchronously and returns a <see cref="HistoricalRatesResponse"/> object.
/// </summary>
/// <returns>A task that contains a normalized <see cref="HistoricalRatesResponse"/> object.</returns>
public async Task <HistoricalRatesResponse> GetHistoricalRates(HistoricalRatesParamEndpoints historicalRatesParam)
{
HistoricalRatesResponse cachedResponse = Cache.GetObject <HistoricalRatesResponse>(historicalRatesParam);
if (cachedResponse != null)
{
return(cachedResponse);
}
else
{
string endpoint = historicalRatesParam.GetDescription();
RestRequest request = new(endpoint);
RestResponse <HistoricalRatesResponse> response = await Client.ExecuteGetAsync <HistoricalRatesResponse>(request);
if (response.IsSuccessful)
{
Cache.SaveObject(historicalRatesParam, response.Data);
return(response.Data);
}
else
{
OnError(response);
return(null);
}
}
}
