public RouteReflector(IRouteReflectorOptions options)
{
_options = options;
}
private static string ReplaceRoutePlaceholders(string routeTemplate, Type controller, MethodInfo action, IRouteReflectorOptions options)
{
var partRegexSquare = new Regex(@"\[(?<part>[^]=?]+)[?]?(=[^]]+)?\]");
var partRegexBraces = new Regex(@"\{(?<part>[^}=?]+)[?]?(=[^}]+)?\}");
string ExtractParameterName(string part) =>
!part.Contains(':') ? part : part.Substring(0, part.IndexOf(':'));
bool DoesRouteParamExist(string paramName)
{
if (action.GetParameters()
.Any(p => p.Name?.Equals(paramName, StringComparison.InvariantCultureIgnoreCase) ?? false))
return true;
if (action.GetParameters()
.Where(p => !options.TypeConverter.TreatAsPrimitive(p.ParameterType.UnwrapNullable())
&& !p.ParameterType.IsCollection()
&& p.GetCustomAttributes(StaticConfig.Instance.FromRouteAttribute).Any())
.Any(p => p.ParameterType.GetProperties().Any(prop =>
prop.Name.Equals(paramName, StringComparison.InvariantCultureIgnoreCase))))
return true;
return false;
}
string MatchReplacer(Match match) => match.Groups["part"].Value switch
{
"controller" => controller.Name.Replace("Controller", "").ToLower(),
"action" => action.Name.ToLower(),
_ => DoesRouteParamExist(ExtractParameterName(match.Groups["part"].Value))
? $"{{{ExtractParameterName(match.Groups["part"].Value)}}}"
: ""
};
return partRegexSquare.Replace(
partRegexBraces.Replace(routeTemplate, MatchReplacer),
MatchReplacer);
}
internal static string DefaultBuildRouteStrategy(Type controller, MethodInfo action, string defaultRoute, IRouteReflectorOptions options)
{
var controllerRouteTemplate = controller.GetCustomAttributes(StaticConfig.Instance.RouteAttribute)
.Select(StaticConfig.Instance.GetTemplateFromRouteAttribute)
.FirstOrDefault();
var methodRouteTemplate = action.GetCustomAttributes(StaticConfig.Instance.RouteAttribute)
.Select(StaticConfig.Instance.GetTemplateFromRouteAttribute)
.FirstOrDefault();
var httpMethodTemplate = action.GetCustomAttributes()
.Where(a => StaticConfig.Instance.HttpMethodBaseAttribute.IsInstanceOfType(a))
.Select(StaticConfig.Instance.GetTemplateFromHttpMethodAttribute)
.FirstOrDefault();
var parts = new List<string>();
if (methodRouteTemplate?.StartsWith("/") != true && controllerRouteTemplate != null)
parts.Add(controllerRouteTemplate);
if (methodRouteTemplate != null)
parts.Add(methodRouteTemplate);
if (httpMethodTemplate != null)
{
if (httpMethodTemplate.StartsWith("/"))
parts = new List<string> {httpMethodTemplate};
else
parts.Add(httpMethodTemplate);
}
var routeTemplate = parts.Any() ? string.Join("/", parts) : defaultRoute;
return ReplaceRoutePlaceholders(routeTemplate, controller, action, options)
.Trim('/');
}
