public OfficialRatesModel(OfficialRates record, OfficialRatesModel previous, OfficialRatesModel annual)
{
Date = record.Date;
TodayRates = record;
YesterdayNbRbRates = previous?.TodayRates.NbRates;
UsdStr = TodayRates.NbRates.Usd.Value.ToString("#,#.####", new CultureInfo("ru-RU"));
EuroStr = TodayRates.NbRates.Euro.Value.ToString("#,#.####", new CultureInfo("ru-RU"));
RurStr = TodayRates.NbRates.Rur.Value.ToString("#,#.####", new CultureInfo("ru-RU"));
UsdBrush = YesterdayNbRbRates == null || YesterdayNbRbRates.Usd.Value.Equals(TodayRates.NbRates.Usd.Value)
? Brushes.Black
: YesterdayNbRbRates.Usd.Value > TodayRates.NbRates.Usd.Value
? Brushes.LimeGreen : Brushes.Red;
Basket = BelBaskets.Calculate(record);
_yesterdayBasket = previous == null
? 0
: previous.Date.Year == 1999 && record.Date.Year == 2000
? previous.Basket / 1000
: previous.Basket;
SetBasketStr();
SetBasketBreakStr(previous);
SetUsdAnnualStr(annual);
SetBasketAnnualStr(annual);
RurUsdStr = TodayRates.CbrRate.Usd.Value.Equals(0) ? "" : TodayRates.CbrRate.Usd.Value.ToString("#,#.##", new CultureInfo("ru-RU"));
}
public static double Calculate(OfficialRates officialRates)
{
var basket = Math.Pow(officialRates.NbRates.Usd.Value / officialRates.NbRates.Usd.Unit, Baskets.Last().Usd) *
Math.Pow(officialRates.NbRates.Euro.Value / officialRates.NbRates.Euro.Unit, Baskets.Last().Euro) *
Math.Pow(officialRates.NbRates.Rur.Value / officialRates.NbRates.Rur.Unit, Baskets.Last().Rur);
return(officialRates.Date < new DateTime(2016, 7, 1) ? Math.Round(basket, 1) : Math.Round(basket, 4));
}
private static OfficialRates NbRbRateFromString(string str)
{
var rate = new OfficialRates();
var substrings = str.Split(';');
rate.Date = Convert.ToDateTime(substrings[0], new CultureInfo("ru-RU"));
rate.NbRates.Usd.Value = Convert.ToDouble(substrings[1], new CultureInfo("en-US")) / GetDenominator(rate.Date);
rate.NbRates.Euro.Value = Convert.ToDouble(substrings[2], new CultureInfo("en-US")) / GetDenominator(rate.Date);
rate.NbRates.Rur.Unit = rate.Date < new DateTime(2016, 7, 1) ? 1 : 100;
rate.NbRates.Rur.Value = Convert.ToDouble(substrings[3], new CultureInfo("en-US")) / GetDenominator(rate.Date) * rate.NbRates.Rur.Unit;
return(rate);
}
public async void Download()
{
IsDownloadEnabled = false;
using (new WaitCursor())
{
var date = Rows.Last().Date.AddDays(1);
var annual = Rows.Last(r => r.Date.Day == 31 && r.Date.Month == 12);
while (date <= DateTime.Today.Date.AddDays(1))
{
var nbRbRates = await NbRbRatesDownloader.GetRatesForDate(date);
if (nbRbRates == null)
{
break;
}
var officialRates = new OfficialRates()
{
Date = date, NbRates = nbRbRates
};
var usd2Rur = await CbrRatesDownloader.GetRateForDate(date);
officialRates.CbrRate.Usd = new OneRate()
{
Unit = 1, Value = usd2Rur
};
_rates.Add(officialRates);
var line = new OfficialRatesModel(officialRates, Rows.Last(), annual);
Rows.Add(line);
if (date.Date.Day == 31 && date.Date.Month == 12)
{
annual = line;
}
date = date.AddDays(1);
}
}
IsDownloadEnabled = true;
}