From 0778c0d4d43771101945cf8ea297d45792f590fb Mon Sep 17 00:00:00 2001
From: maurok <maurok@gmail.com>
Date: Thu, 1 Jun 2017 16:31:18 -0300
Subject: [PATCH] # Handling LUIS JObjects

---
 .../LuisActionResolver.cs                     | 30 +++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/CSharp/Blog-LUISActionBinding/Microsoft.Cognitive.LUIS.ActionBinding/LuisActionResolver.cs b/CSharp/Blog-LUISActionBinding/Microsoft.Cognitive.LUIS.ActionBinding/LuisActionResolver.cs
index 2b9e8a625a..9c5df45c1b 100644
--- a/CSharp/Blog-LUISActionBinding/Microsoft.Cognitive.LUIS.ActionBinding/LuisActionResolver.cs
+++ b/CSharp/Blog-LUISActionBinding/Microsoft.Cognitive.LUIS.ActionBinding/LuisActionResolver.cs
@@ -350,6 +350,9 @@ private static bool AssignValue(ILuisAction action, PropertyInfo property, objec
                 {
                     object value;
 
+                    // handle LUIS JObjects
+                    paramValue = SanitizeInputValue(type, paramValue);
+
                     if (type.IsArray)
                     {
                         value = BuildArrayOfValues(action, property, type.GetElementType(), paramValue);
@@ -405,6 +408,33 @@ private static Array BuildArrayOfValues(ILuisAction action, PropertyInfo propert
             }
         }
 
+        private static object SanitizeInputValue(Type targetType, object value)
+        {
+            object result = value;
+
+            // handle case where input is JArray returned from LUIS
+            if (value is Newtonsoft.Json.Linq.JArray)
+            {
+                var arrayOfValues = value as Newtonsoft.Json.Linq.JArray;
+
+                if (targetType.IsArray)
+                {
+                    result = arrayOfValues.AsEnumerable<object>();
+                }
+                else
+                {
+                    if (arrayOfValues.Count > 1)
+                    {
+                        throw new FormatException("Cannot assign multiple values to single field");
+                    }
+
+                    result = arrayOfValues[0];
+                }
+            }
+
+            return result;
+        }
+
         private static bool AssignEntitiesToMembers(
             ILuisAction action, 
             IEnumerable<PropertyInfo> properties,