private static EndpointHandlerParameterDeclaration[] BuildEndpointParameterInfo(MethodInfo methodInfo, DeclaredRouteInfo declaredRouteInfo, EndpointDeclarationFactoryOptions options)
{
var parameters = methodInfo.GetParameters();
if (parameters is null)
{
return(Array.Empty <EndpointHandlerParameterDeclaration>());
}
EndpointHandlerParameterDeclaration[] results = new EndpointHandlerParameterDeclaration[parameters.Length];
for (int i = 0; i < parameters.Length; i++)
{
results[i] = EndpointParameterInfoFactory.BuildEndpointParameterDeclaration(parameters[i], declaredRouteInfo.Parameters, options);
}
return(results);
}
public static EndpointRequestHandlerDeclaration BuildFactoryForEndpoint(TypeInfo endpointType, DeclaredRouteInfo routeInfo, EndpointDeclarationFactoryOptions options)
{
var handleMethods = endpointType.DeclaredMethods.Where(m => m.IsPublic && (m.Name is "Handle" or "HandleAsync")).ToArray();
if (handleMethods.Length != 1 || handleMethods[0] is null)
{
throw new InvalidEndpointSetupException($"{endpointType.Name} does not contain a single public method named Handle or HandleAsync");
}
var handleMethod = handleMethods[0];
var parameterInfo = BuildEndpointParameterInfo(handleMethod, routeInfo, options);
if (handleMethod.ReturnType == typeof(void))
{
return(BuildNoContentResponse(new VoidEndpointMethodExecutor(endpointType, handleMethod), parameterInfo));
}
if (handleMethod.ReturnType == typeof(Task))
{
return(BuildNoContentResponse(new TaskEndpointMethodExecutor(endpointType, handleMethod), parameterInfo));
}
if (handleMethod.ReturnType == typeof(ValueTask))
{
return(BuildNoContentResponse(new ValueTaskEndpointMethodExecutor(endpointType, handleMethod), parameterInfo));
}
var(endpointMethodExecutor, returnType) = GetMethodExcutorAndReturnTypeFor(endpointType, handleMethod);
if (typeof(IEndpointResult).IsAssignableFrom(returnType))
{
return(BuildForEndpointResultResponse(endpointMethodExecutor, parameterInfo));
}
if (returnType == typeof(string))
{
return(BuildForStringResponse(endpointMethodExecutor, parameterInfo, returnType));
}
return(BuildForObjectResponse(endpointMethodExecutor, parameterInfo, returnType));
}