public static ValidationResult Validate(ExchangeRangeViewModel exchangeRange, ValidationContext validationContext)
{
if (exchangeRange.StartDate > exchangeRange.EndDate)
{
return(new ValidationResult("StartDate mustn't be greater than EndDate.", new List <string> {
"StartDate", "EndDate"
}));
}
return(ValidationResult.Success);
}
public static ValidationResult Validate(ExchangeRangeViewModel exchangeRange, ValidationContext validationContext)
{
if (exchangeRange.StartDate > exchangeRange.EndDate)
return new ValidationResult("StartDate mustn't be greater than EndDate.", new List<string> { "StartDate", "EndDate" });
return ValidationResult.Success;
}
/*
* Returns rates for a given currencyCode from startDate to endDate inclusive.
* GET: Exchanges/Range/2014-02-25/2014-02-27/RUB
**/
public ActionResult Range(ExchangeRangeViewModel exchangeRange)
{
Trace.WriteLine("RANGE for "+exchangeRange+".");
var startDate = exchangeRange.StartDate;
var endDate = exchangeRange.EndDate;
var targetCurrencyCode = exchangeRange.TargetCurrencyCode;
var maxNumberOfDaysInRange = 62;
Trace.WriteLine(
String.Format(
"Range requested for: {0}-{1} {2}",
startDate, endDate, targetCurrencyCode
)
);
var numberOfDaysInRange = (endDate - startDate).Days + 1; // Inclusive.
if (!(0 < numberOfDaysInRange && numberOfDaysInRange <= maxNumberOfDaysInRange))
{
return new HttpStatusCodeResult(HttpStatusCode.RequestedRangeNotSatisfiable,
String.Format("Number of days in a range must be positive and less than {0}.", maxNumberOfDaysInRange));
}
IEnumerable<Exchange> exchanges;
try
{
exchanges = exchangeContext.ExchangeRepository.GetRange(startDate, endDate, targetCurrencyCode);
Trace.WriteLine("Retrieved range of responses without errors.");
}
catch (ExchangeResource.BaseException resEx)
{
Trace.WriteLine("ExchangeResource exception caught with "+resEx.GetFailedDates().Count()+" failed dates. Specifying type...");
var failedDatesString = String.Join(", ", resEx.GetFailedDates().Select(d => d.ToString("yyyy-MM-dd")));
var header = String.Format(
"Couldn't supply information about {0} on these dates: {1}. Reason:<br/>",
targetCurrencyCode,
failedDatesString
);
header = header.Replace("\r", "").Replace("\n", "<br/>"); // Linebreaks are not allowed in http headers.
try {
throw;
}
catch (ExchangeResource.TryLaterException)
{
return new HttpStatusCodeResult(
HttpStatusCode.ServiceUnavailable,
header + "Temporary fail. The application has temporary difficulties with specified currency and dates. Try a bit later."
);
}
catch (ExchangeResource.TryRequestingOtherDatesOrCurrency requestEx)
{
return new HttpStatusCodeResult(
HttpStatusCode.NotFound,
header + "The application has no information about this currency on dates requested."
+ "<br/>" +requestEx.Message
);
}
catch (ExchangeResource.BaseException)
{
Trace.WriteLine("Some base resource exception caught. Header for response: <"+header+">");
return new HttpStatusCodeResult(
HttpStatusCode.ServiceUnavailable,
header + "The application can't complete your request for specified currency and dates due to some internal conflicts."
);
}
}
Trace.WriteLine("Now we have all exchanges and ready to render a view.");
return View(exchanges);
}
public ActionResult RangeRoot(ExchangeRangeViewModel exchangeRange)
{
Trace.WriteLine("RangeRoot for exchangeRange.");
if (ModelState.IsValid)
{
Trace.WriteLine("Model is valid. Be ready to request the range.");
return RedirectToAction("Range", exchangeRange.ToRouteValues());
}
Trace.WriteLine("Model is not valid.");
return View(exchangeRange);
}
public ActionResult RangeRoot()
{
Trace.WriteLine("RANGE W/O arguments.");
var endDate = DateTime.Now;
var startDate = DateTime.Now.Subtract(TimeSpan.FromDays(14));
var currencyCode = "RUB";
var model = new ExchangeRangeViewModel { StartDate = startDate, EndDate = endDate, TargetCurrencyCode = currencyCode };
return View(model);
}