//Parsing XML data to object (type Rates)
public IEnumerable <Rates> ParsingData(bool latest)
{
DataFile DataXml = new DataFile();
Rates DataRates;
IEnumerable <Rates> ListDataRates = Enumerable.Empty <Rates>();;
if (latest == true)
{
DataXml = DataXml.XmlToDataFile();
}
else
{
DataXml = DataXml.XmlToDataFileHistory();
}
for (int j = 0; j < DataXml.CubeRootEl.Count(); j++)
{
var time = DataXml.CubeRootEl.ElementAtOrDefault(j).Time;
IEnumerable <Rates.Currency> currencies = Enumerable.Empty <Rates.Currency>();
for (int i = 0; i < DataXml.CubeRootEl.ElementAtOrDefault(j).CubeItems.Count(); i++)
{
Rates.Currency currency = new Rates.Currency();
currency.Name = DataXml.CubeRootEl.ElementAtOrDefault(j).CubeItems.ElementAtOrDefault(i).Currency;
currency.Rate = DataXml.CubeRootEl.ElementAtOrDefault(j).CubeItems.ElementAtOrDefault(i).Rate;
currencies = currencies.Append(currency);
}
DataRates = new Rates(time, currencies);
ListDataRates = ListDataRates.Append(DataRates);
}
return(ListDataRates);
}
//Filtering exchange rates records to get specific currencies
public IEnumerable <Rates> FindRates(IEnumerable <Rates> listdatarates, string symbols)
{
if (symbols != null)
{
var symbolss = symbols.Split(',');
IEnumerable <Rates> Listdatarates = Enumerable.Empty <Rates>();
for (int a = 0; a < listdatarates.Count(); a++)
{
Rates datarates = new Rates();
Rates newrates = new Rates();
datarates = listdatarates.ElementAtOrDefault(a);
IEnumerable <Rates.Currency> currencies = Enumerable.Empty <Rates.Currency>();
for (int i = 0; i < datarates.Currencies.Count(); i++)
{
for (int j = 0; j < symbolss.Length; j++)
{
if (datarates.Currencies.ElementAtOrDefault(i).Name == symbolss[j])
{
Rates.Currency currency = new Rates.Currency();
currency.Name = datarates.Currencies.ElementAtOrDefault(i).Name;
currency.Rate = datarates.Currencies.ElementAtOrDefault(i).Rate;
currencies = currencies.Append(currency);
}
}
}
newrates = new Rates(datarates.Base, datarates.Time, currencies);
Listdatarates = Listdatarates.Append(newrates);
}
for (int i = 0; i < Listdatarates.Count(); i++)
{
if (Listdatarates.ElementAtOrDefault(i).Currencies.Count() != symbolss.Length)
{
throw new Exception($"Symbols '{symbols}' are invalid. Maybe they are lowercase or not supported. Carefull with whitespaces between symbols.");
}
}
return(Listdatarates);
}
else
{
return(listdatarates);
}
}
