private async void ShowChart(ExchangeRateItem obj)
{
obj.IsChartVisible = !obj.IsChartVisible;
if (obj.IsChartVisible)
{
obj.ChartEntries = await _ratesStore.GetDataForChartGenerationAsync(obj.CurrencyType, obj.ChartDate.Month, obj.ChartDate.Year);
}
}
public ExchangeRateItem GetExchangeRateApi(string rate)
{
WebClient webclient = new WebClient();
string url = string.Format("http://api.nbp.pl/api/exchangerates/rates/a/" + rate + "/?format=json");
string ratejson = webclient.DownloadString(url);
ExchangeRateItem item = JsonConvert.DeserializeObject <ExchangeRateItem>(ratejson);
return(item);
}
public PartialViewResult ExchangeRateGadget()
{
//Lepsze rozwiazanie: pojedyńcze połączenie z api z całą tabelą z wiloma walutami
ExchangeRateItem eur = GetExchangeRateApi("eur");
ExchangeRateItem usd = GetExchangeRateApi("usd");
ExchangeRateItem chf = GetExchangeRateApi("chf");
ExchangeRateItem gbp = GetExchangeRateApi("gbp");
ExchangeRateGadgetViewModel model = new ExchangeRateGadgetViewModel()
{
EUR = eur.rates[0].mid,
USD = usd.rates[0].mid,
CHF = chf.rates[0].mid,
GBP = gbp.rates[0].mid
};
return(PartialView(model));
}
public static ExchangeRatesInfo TransformToExchangeRatesInfo(this IEnumerable <HistoryItemExRatesApi> input)
{
var orderBy = input.OrderBy(r => r.Rate);
var min = orderBy.First();
var max = orderBy.Last();
var minExRateItem = new ExchangeRateItem {
Date = min.Date.ToString(), Rate = string.Format("{0:0.0000000000}", min.Rate)
};
var maxExRateItem = new ExchangeRateItem {
Date = max.Date.ToString(), Rate = string.Format("{0:0.0000000000}", max.Rate)
};
return(new ExchangeRatesInfo {
MinimumExchangeRateItem = minExRateItem, MaximumExchangeRateItem = maxExRateItem, AverageRate = string.Format("{0:0.0000000000}", input.Average(r => r.Rate))
});
}
public static ExchangeRatesInfo TransformToExchangeRatesInfo(this TimeseriesResponseApiExchangerate input, IEnumerable <DateTime> requestedDates)
{
var requestedDateStrings = requestedDates.TransformToFormattedDateStrings();
var requestedPairs = input.Rates.Select(pair => new { Date = pair.Key, Rate = pair.Value.First().Value }).Where(x => requestedDateStrings.Contains(x.Date)).ToList();
var orderBy = requestedPairs.OrderBy(x => x.Rate);
var minPair = orderBy.First();
var maxPair = orderBy.Last();
var minExRateItem = new ExchangeRateItem {
Date = minPair.Date.ToString(), Rate = string.Format("{0:0.0000000000}", minPair.Rate)
};
var maxExRateItem = new ExchangeRateItem {
Date = maxPair.Date.ToString(), Rate = string.Format("{0:0.0000000000}", maxPair.Rate)
};
return(new ExchangeRatesInfo {
MinimumExchangeRateItem = minExRateItem, MaximumExchangeRateItem = maxExRateItem, AverageRate = string.Format("{0:0.0000000000}", requestedPairs.Average(r => r.Rate))
});
}
private void DecrementChartDate(ExchangeRateItem obj)
{
obj.ChartDate = obj.ChartDate.AddMonths(-1);
}
private bool CanIncrementChartDate(ExchangeRateItem arg)
{
return(!IsBusy && arg != null && arg.ChartDate.AddMonths(1) <= DateTime.Now);
}
private bool CanDecrementDate(ExchangeRateItem arg)
{
return(!IsBusy && arg != null && arg.ChartDate.AddMonths(-1) >= new DateTime(1999, 1, 1));
}
