public void CalculateCurrencyAmount(ObservableCollection <CurrencyExchangeBindableItem> list, CurrencyExchangeBindableItem targetCurrency = null)
{
CurrencyExchangeBindableItem standardItem = list.FirstOrDefault(x => x.IsBaseCurrency);
if (standardItem != null)
{
if (targetCurrency != null)
{
if (targetCurrency.IsBaseCurrency)
{
standardItem.Amount = targetCurrency.Amount;
}
else
{
if (targetCurrency.Rate != 0)
{
standardItem.Amount = targetCurrency.Amount / targetCurrency.Rate;
}
}
standardItem.AmountText = CurrencyHelper.FormatCurrencyAmount(standardItem.Amount, standardItem.TargetCurrency.CultureName);
}
foreach (var item in list.Where(x => x.IsBaseCurrency == false).ToList())
{
if (targetCurrency != null)
{
if (targetCurrency.TargetCode != item.TargetCode)
{
item.Amount = standardItem.Amount * item.Rate;
}
}
else
{
item.Amount = standardItem.Amount * item.Rate;
}
item.AmountText = CurrencyHelper.FormatCurrencyAmount(item.Amount, item.TargetCurrency.CultureName);
}
}
}
public void SetBaseCurrency(ObservableCollection <CurrencyExchangeBindableItem> list, CurrencyExchangeBindableItem baseCurrency)
{
foreach (var x in list)
{
x.IsBaseCurrency = false;
x.BaseCurrency = baseCurrency.TargetCurrency;
x.BaseCode = baseCurrency.TargetCode;
}
baseCurrency.IsBaseCurrency = true;
}
public async Task DeleteCurrencyAsync(ObservableCollection <CurrencyExchangeBindableItem> list, CurrencyExchangeBindableItem item)
{
var target = list.FirstOrDefault(x => x.Id == item.Id);
if (target != null)
{
list.Remove(target);
for (var i = 0; i < list.Count; i++)
{
list[i].SortOrder = i;
}
await _dataService.DeleteAsync(target.Id);
await _dataService.UpdateRangeAsync(list.Select(x => x.ToCurrencyExchangeItem()));
}
}
