public ActionResult <double> Get(string code1, string code2, int num)
{
if (code1.Length != 3)
{
return(BadRequest($"400 Error (Bad Request): Currency Code \"{code1}\" not valid."));
}
if (code2.Length != 3)
{
return(BadRequest($"400 Error (Bad Request): Currency Code \"{code2}\" not valid."));
}
if (num < 0 || num > 15)
{
return(BadRequest("400 Error (Bad Request): Precision must be from 0 to 15."));
}
code1 = code1.ToUpper();
code2 = code2.ToUpper();
var currencies = CurrencyService.GetCurrencies();
if (currencies.ContainsKey(code1) && currencies.ContainsKey(code2))
{
var currency1 = currencies[code1];
var currency2 = currencies[code2];
double exchange = CurrencyService.ExchangeRate(currency1, currency2);
if (exchange == 0)
{
return(NotFound("404 Error (Not Found): Currency Conversion Rate could not be found."));
}
exchange = Math.Round(exchange, num);
return(exchange);
}
else if (currencies.ContainsKey(code1) && !currencies.ContainsKey(code2))
{
return(NotFound($"404 Error (Not Found): Currency Code \"{code2}\" could not be found."));
}
else if (!currencies.ContainsKey(code1) && currencies.ContainsKey(code2))
{
return(NotFound($"404 Error (Not Found): Currency Code \"{code1}\" could not be found."));
}
else
{
return(NotFound($"404 Error (Not Found): Currency Code \"{code1}\" & \"{code2}\" could not be found."));
}
}
