/**
Parses the URL savedEstimateOldStyle, which is in the old estimation save url
and sets the according difficulties in model.PreconditionItems and
model.ComplexityItems and the estimate in model.Estimate.
**/
private static void ParseOldStyleUrl(HomeModel model, string savedEstimateOldStyle)
{
// The old estimate url schema is:
var urlScheme = "nnnnPPPPPPPPCCCCCCCC";
// Where n is the original zero-left-padded estimate value,
// P is the selected precondition difficulty (0, A, B, C, D)
// C is the selected complexity difficulty (0, A, B, C, D)
// Preconditions and complexity have the same order as displayed.
if (savedEstimateOldStyle.Length == "nnnnPPPPPPPPCCCCCCCC".Length)
{
int estimate;
if (int.TryParse(savedEstimateOldStyle.Substring(0, urlScheme.Count(c => c == 'n')),
NumberStyles.HexNumber,
CultureInfo.InvariantCulture.NumberFormat,
out estimate))
{
model.Estimate = estimate;
int preconditionCount = urlScheme.Count(c => c == 'P');
Debug.Assert(preconditionCount == model.PreconditionItems.Count);
for (int i = 0; i < preconditionCount; ++i)
{
model.PreconditionItems[i].SelectedDifficulty = CodeToNumericDifficulty(savedEstimateOldStyle[4 + i]);
}
int complexityCount = urlScheme.Count(c => c == 'C');
Debug.Assert(complexityCount == model.ComplexityItems.Count);
for (int i = 0; i < complexityCount; ++i)
{
model.ComplexityItems[i].SelectedDifficulty = CodeToNumericDifficulty(savedEstimateOldStyle[4 + preconditionCount + i]);
}
}
}
}
// GET: /<controller>/
public IActionResult Index()
{
var model = new HomeModel();
ViewData.Model = model;
if (HttpContext.Request.Query.ContainsKey ("e"))
{
var savedEstimateOldStyle = HttpContext.Request.Query ["e"];
ParseOldStyleUrl(model, savedEstimateOldStyle);
}
return View();
}
