private static RouteResolutionResult FindMostSpecificRoute(IEnumerable <RouteResolutionResult> routes)
{
RouteResolutionResult bestMatch = default(RouteResolutionResult);
var otherMatches = new List <RouteResolutionResult>();
foreach (var route in routes)
{
if (bestMatch == null)
{
bestMatch = route;
}
else if (route.VariableCount > bestMatch.VariableCount)
{
otherMatches.Clear();
bestMatch = route;
}
else if (route.VariableCount == bestMatch.VariableCount)
{
// Choose
// /product-lines/{productId}/{lineNumber}
// over
// /products/{productId}/product-lines/{lineNumber}
// (shortest one)
if (route.PathLength < bestMatch.PathLength)
{
otherMatches.Add(bestMatch);
bestMatch = route;
}
else
{
otherMatches.Add(route);
}
}
}
// We may find several different routes {code}/{id} and {code}/{name} having the same number of variables.
// Such case will be handled by the next check.
return(bestMatch == null || otherMatches.All(r => r.HasSameVariables(bestMatch))
? bestMatch
: null);
}
/// <summary>Applies this object.</summary>
///
/// <param name="request"> The request.</param>
/// <param name="httpMethod">The HTTP method.</param>
///
/// <returns>A RouteResolutionResult.</returns>
public RouteResolutionResult Apply(object request, string httpMethod)
{
if (!this.IsValid)
{
return(RouteResolutionResult.Error(this, this.ErrorMsg));
}
if (HttpMethods != null && HttpMethods.Length != 0 && httpMethod != null && !HttpMethods.Contains(httpMethod) && !HttpMethods.Contains("ANY"))
{
return(RouteResolutionResult.Error(this, "Allowed HTTP methods '{0}' does not support the specified '{1}' method."
.Fmt(HttpMethods.Join(", "), httpMethod)));
}
var uri = this.Path;
var unmatchedVariables = new List <string>();
foreach (var variable in this.variablesMap)
{
var property = variable.Value;
var value = property.GetValue(request);
var isWildCard = variable.Key.EndsWith("*");
if (value == null && !isWildCard)
{
unmatchedVariables.Add(variable.Key);
continue;
}
var variableValue = FormatVariable(value);
uri = uri.Replace(VariablePrefix + variable.Key + VariablePostfix, variableValue);
}
if (unmatchedVariables.Any())
{
var errMsg = "Could not match following variables: " + string.Join(",", unmatchedVariables.ToArray());
return(RouteResolutionResult.Error(this, errMsg));
}
return(RouteResolutionResult.Success(this, uri));
}
internal bool HasSameVariables(RouteResolutionResult other)
{
return Route.Variables.All(v => other.Route.Variables.Contains(v));
}
internal bool HasSameVariables(RouteResolutionResult other)
{
return(Route.Variables.All(v => other.Route.Variables.Contains(v)));
}