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"));
}
private void SetBasketBreakStr(OfficialRatesModel previous)
{
if (previous == null)
{
return;
}
if (BasketDelta * previous.BasketDelta >= 0) // no break
{
_procBasketBreak = previous._procBasketBreak + ProcBasketDelta;
BasketAfterBreakStr = $"{_procBasketBreak:+0.##;-0.##;0}%";
BasketBreakBrush = _procBasketBreak < 0 ? Brushes.LimeGreen : Brushes.Red;
}
else
{
_procBasketBreak = ProcBasketDelta;
BasketAfterBreakStr = "";
}
}
private void SetBasketAnnualStr(OfficialRatesModel annual)
{
if (annual == null || annual.Basket.Equals(0))
{
return;
}
var lastYear = Date.Year == 2000
? annual.Basket / 1000
: Date > new DateTime(2016, 06, 30) && Date < new DateTime(2017, 1, 1)
? annual.Basket / 10000
: annual.Basket;
var delta = Basket - lastYear;
_procBasketAnnual = delta / lastYear * 100;
BasketAnnualStr = $"{_procBasketAnnual:+0.##;-0.##;0}%";
BasketAnnualBrush = _procBasketAnnual < 0 ? Brushes.LimeGreen : Brushes.Red;
}
private void SetUsdAnnualStr(OfficialRatesModel annual)
{
if (annual == null)
{
return;
}
var lastYear = Date.Year == 2000
? annual.TodayRates.NbRates.Usd.Value / 1000
: Date > new DateTime(2016, 06, 30) && Date < new DateTime(2017, 1, 1)
? annual.TodayRates.NbRates.Usd.Value / 10000
: annual.TodayRates.NbRates.Usd.Value;
var delta = TodayRates.NbRates.Usd.Value - lastYear;
var proc = delta / lastYear * 100;
UsdAnnualStr = $"{delta.ToString("#,0.####", new CultureInfo("ru-RU"))} ({proc:+0.##;-0.##;0}%)";
UsdAnnualBrush = proc < 0 ? Brushes.LimeGreen : Brushes.Red;
}
private void Init()
{
Rows = new ObservableCollection <OfficialRatesModel>();
OfficialRatesModel annual = null;
OfficialRatesModel previous = null;
foreach (var record in _rates)
{
var current = new OfficialRatesModel(record, previous, annual);
Application.Current.Dispatcher.Invoke(() => Rows.Add(current));
if (!current.BasketDelta.Equals(0))
{
previous = current;
}
if (current.Date.Day == 31 && current.Date.Month == 12)
{
annual = current;
}
}
}
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;
}