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public static class PageTypeRouteAttributeCacheHelper
{
public static readonly Dictionary<string, ControllerActionPair> ClassNameLookup;
static PageTypeRouteAttributeCacheHelper()
{
var controllerTypes = typeof(PageTypeRouteAttributeCacheHelper)
.Assembly
.GetTypes()
.Where(t =>
t.IsPublic &&
t != typeof(Controller) &&
typeof(Controller).IsAssignableFrom(t));
var dictionary = new Dictionary<string, ControllerActionPair>();
foreach (var controllerType in controllerTypes)
{
var actions = controllerType
.GetMethods(BindingFlags.Public | BindingFlags.Instance)
.Where(m => m.IsDefined(typeof(PageTypeRouteAttribute)));
foreach (var action in actions)
{
string[] classNames = action.GetCustomAttribute<PageTypeRouteAttribute>().ClassNames;
foreach (string className in classNames)
{
if (dictionary.ContainsKey(className))
{
var pair = dictionary[className];
throw new Exception(
"Duplicate Annotation: " +
$"{pair.ControllerName}Controller.{pair.ActionName} already registered for NodeClassName {className}. " +
$"Cannot be registered for {controllerType.Name}.{action.Name}"
);
}
dictionary.Add(className, new ControllerActionPair(controllerType.RemoveControllerSuffix(), action.Name));
}
}
}
ClassNameLookup = dictionary;
}
private const int CONTROLLER_SUFFIX_LENGTH = 10;
public static string RemoveControllerSuffix(this Type controllerType)
{
if (!typeof(Controller).IsAssignableFrom(controllerType))
{
throw new ArgumentException($"Type [{controllerType.Name}] is not assignable from [{nameof(Controller)}]");
}
return controllerType
.Name
.Substring(0, controllerType.Name.Length - CONTROLLER_SUFFIX_LENGTH);
}
public readonly struct ControllerActionPair
{
public string ControllerName { get; }
public string ActionName { get; }
public ControllerActionPair(string controllerName, string actionName)
{
ControllerName = controllerName;
ActionName = actionName;
}
}
}
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