/// <summary>
/// Generates POST routes automatically for the a NancyModule.
/// </summary>
/// <typeparam name="TBase">The type of the service (must be an interface)</typeparam>
/// <param name="module">The NancyModule in which the routes will be created</param>
/// <param name="implementation">An implementation of the service interface type</param>
public static CableRouteSchema RegisterRoutesFor <TBase>(NancyModule module, TBase implementation)
{
var baseType = typeof(TBase);
var type = implementation.GetType();
var baseTypeName = TypeName(baseType);
var serviceName = TypeName(type);
var routeSchema = new CableRouteSchema
{
ServiceInterface = baseTypeName,
ServiceName = serviceName
};
CheckMethodOverloading <TBase>();
var defaultMethods = new string[] { "Equals", "ToString", "GetHashCode", "GetType" };
var publicMethods = baseType.GetMethods().Where(method => !defaultMethods.Contains(method.Name));
foreach (var method in publicMethods)
{
if (method.ContainsGenericParameters)
{
throw new ArgumentException($"Method {method.Name} contains generic type parameters, this is not supported.");
}
RegisterRoute <TBase>(implementation, method, module, routeSchema);
}
return(routeSchema);
}
static void RegisterRoute <TBase>(object implementation, MethodInfo method, NancyModule module, CableRouteSchema routeSchema)
{
var typeName = typeof(TBase).Name;
var url = urlMapper(typeName, method.Name);
var isReturningTask = method.ReturnType.BaseType == typeof(Task);
routeSchema.Routes.Add(new CableRoute
{
Method = method.Name,
ParameterTypes = method.GetParameters().Select(p => p.ParameterType).Select(TypeName).ToList(),
ReturnType = TypeName(method.ReturnType),
Route = url
});
module.Post[url, true] = async(ctx, token) =>
{
try
{
using (var reader = new StreamReader(module.Request.Body))
{
var incomingJson = await reader.ReadToEndAsync();
var inputParameters = JObject.Parse(incomingJson);
var jsonParameters = inputParameters["Value"] as JArray;
var parameterTypes = method.GetParameters().Select(p => p.ParameterType).ToArray();
object[] parameters = new object[parameterTypes.Length];
for (var i = 0; i < parameters.Length; i++)
{
var type = parameterTypes[i];
// deserialize each parameter to it's respective type
var json = jsonParameters[i].ToString();
parameters[i] = Json.Deserialize(json, type);
}
object result = null;
if (isReturningTask)
{
dynamic task = method.Invoke(implementation, parameters);
result = await task;
}
else
{
result = method.Invoke(implementation, parameters);
}
return(Json.Serialize(result));
}
}
catch (Exception ex)
{
var errorData = new Dictionary <string, object>();
errorData["$exception"] = true;
errorData["$exceptionMessage"] = ex.InnerException.Message;
return(JsonConvert.SerializeObject(errorData));
}
};
}
