public ActionResult Index(string collectionCode, string referenceCode,
string referenceValue1, string referenceValue2, string referenceValue3)
{
HadithCollection collection = HadithCollectionRepository.Get(collectionCode);
if (collection == null)
{
return(HttpNotFound());
}
var referencePartNamesAndValues = new List <(string referencePartName, int value, string suffix)>();
if (!string.IsNullOrWhiteSpace(referenceValue1))
{
referencePartNamesAndValues.Add(HadithReference.SplitNameAndValue(referenceValue1));
}
if (!string.IsNullOrWhiteSpace(referenceValue2))
{
referencePartNamesAndValues.Add(HadithReference.SplitNameAndValue(referenceValue2));
}
if (!string.IsNullOrWhiteSpace(referenceValue3))
{
referencePartNamesAndValues.Add(HadithReference.SplitNameAndValue(referenceValue3));
}
IEnumerable <string> referencePartNames = referencePartNamesAndValues
.Select(x => x.referencePartName);
HadithReferenceDefinition referenceDefinition = collection.GetReferenceDefinition(referenceCode);
if (referenceDefinition == null && referenceCode.Contains("-"))
{
return(RedirectForMissingIndexCode(collectionCode, referenceCode, collection, referencePartNamesAndValues, referencePartNames, ref referenceDefinition));
}
if (referenceDefinition == null || !referenceDefinition.PatternMatch(referencePartNames))
{
return(HttpNotFound());
}
IEnumerable <(int value, string suffix)> referenceValues =
referencePartNamesAndValues.Select(x => (x.value, x.suffix));
IEnumerable <HadithReference> hadithReferences =
HadithRepository.GetReferences(
collectionCode: collectionCode,
referenceCode: referenceCode,
values: referenceValues);
IEnumerable <string> urlReferenceParts = referencePartNamesAndValues
.Select(x => x.value + x.suffix)
.Select((value, i) => referenceDefinition.PartNames[i] + "-" + value);
string partsAsUrl = string.Join("/", urlReferenceParts);
string urlSoFar = $"/hadith/{collectionCode}/{referenceCode}/{partsAsUrl}";
if (urlSoFar.EndsWith("/"))
{
urlSoFar = urlSoFar.Substring(0, urlSoFar.Length - 1);
}
var headerViewModel = new HadithIndexHeaderViewModel(
selectedReferenceCode: referenceCode,
urlSoFar: urlSoFar,
collection: collection,
referencePartNamesAndValues: urlReferenceParts);
if (referencePartNames.Count() == referenceDefinition.PartNames.Count)
{
IEnumerable <int> hadithIds = hadithReferences.Select(x => x.HadithId);
IEnumerable <Hadith> hadiths = HadithRepository.GetHadiths(hadithIds);
IEnumerable <HadithViewModel> hadithViewModels = HadithViewModelFactory.Create(hadiths);
var viewModel = new HadithsViewModel(headerViewModel, hadithViewModels);
return(View("Hadiths", viewModel));
}
else
{
string nextReferencePartName = referenceDefinition.PartNames[referencePartNames.Count()];
Func <HadithReference, string> getNextValue;
switch (referencePartNames.Count())
{
case 0:
getNextValue = x => x.ReferenceValue1 + x.ReferenceValue1Suffix;
break;
case 1:
getNextValue = x => x.ReferenceValue2 + x.ReferenceValue2Suffix;
break;
case 2:
getNextValue = x => x.ReferenceValue3 + x.ReferenceValue3Suffix;
break;
default:
throw new NotImplementedException();
}
// If the next level is the final level (the hadith itself) then remove the suffix
// from the final part so that all hadiths with the same reference but different
// suffixes are shown on screen at once.
hadithReferences = hadithReferences
.Select(x => x.ExcludingFinalSuffix())
.Distinct()
.OrderBy(x => x);
// Get the next available values
IEnumerable <string> nextReferencePartValues = hadithReferences
.Select(getNextValue)
.Distinct();
var viewModel = new BrowseHadithIndexViewModel(
hadithIndexHeaderViewModel: headerViewModel,
nextReferencePartName: nextReferencePartName,
nextReferencePartValueSelection: nextReferencePartValues);
return(View("BrowseHadithIndex", viewModel));
}
}