// GET api/Exchange/USD/INR/2018-02-02,2018-07-05
public IEnumerable <string> Get(string baseCurrency, string targetCurrency, string dates)
{
CurrencyRateCalculation obj = new CurrencyRateCalculation();
ExchangeRateCalculation calculation = obj.GetCalculatedData(baseCurrency, targetCurrency, dates);
return(new string[] { "Min Rate - ", calculation.MinRate, "Min Date - ", calculation.MinDate, "Max Rate - ", calculation.MaxRate, "Max Date - ", calculation.MaxDate, "Average Rate - ", calculation.AvgRate });
}
public ExchangeRateCalculation GetCalculatedData(string baseCurrency, string targetCurrency, string dates)
{
ExchangeRateCalculation calculation = new ExchangeRateCalculation();
//initialisation
List <double> values = new List <double>();
int maxindex, minindex;
double minvalue, maxvalue, sumvalue;
string[] dateArray = dates.Split(',');
exchangeRate.BaseCurrency = baseCurrency;
exchangeRate.TargetCurrency = targetCurrency;
// get exchange rate
for (int i = 0; i < dateArray.Count(); i++)
{
exchangeRate.Date = dateArray[i];
values.Add(GetData(exchangeRate));
}
// Calculations
if (values.Count != 0)
{
minvalue = maxvalue = values[0];
minindex = maxindex = 0; sumvalue = 0;
for (int i = 0; i < values.Count; i++)
{
sumvalue = sumvalue + values[i];
if (values[i] > maxvalue)
{
maxvalue = values[i];
maxindex = i;
}
else if (values[i] < minvalue)
{
minvalue = values[i];
minindex = i;
}
}
calculation.MinDate = dateArray[minindex];
calculation.MaxDate = dateArray[maxindex];
calculation.MinRate = minvalue.ToString();
calculation.MaxRate = maxvalue.ToString();
calculation.AvgRate = (sumvalue / values.Count()).ToString();
}
return(calculation);
}
