private IObservable<PathValue> Resolve(Route route, RequestContext context)
{
if (!context.Unmatched.Any() || _results.Any(pv => pv.Path.Equals(context.Unmatched)))
return Observable.Empty<PathValue>();
var results = route(context).SelectMany(result =>
{
if (result.IsComplete)
{
var pathValues = result.Values;
if (pathValues.Any())
{
_results.AddRange(pathValues);
if (result.UnmatchedPath.Any())
{
return pathValues.ToObservable()
.Where(pathValue => pathValue.Value is Ref)
.SelectMany(pathValue =>
{
var unmatched = ((Ref) pathValue.Value).AsRef().AppendAll(result.UnmatchedPath);
return Resolve(route, context.WithUnmatched(unmatched));
})
//.StartWith(pathValues) // Is this nescessary?
;
}
}
}
else
{
var error = new Error(result.Error);
_results.Add(new PathValue(context.Unmatched, error));
return Observable.Return(new PathValue(context.Unmatched, error));
}
return Observable.Empty<PathValue>();
});
return results;
}