Added JsonExtensions class

Author: Microsoft Graph DevX Tooling

src/readme.graph.md

@@ -337,8 +337,8 @@ directive:
 
         // Enables null valued properties
         $ = $.replace(/AddIf\(\s*null\s*!=\s*(this\._\w+)\s*\?\s*\(\s*Microsoft\.Graph\.PowerShell\.Runtime\.Json\.JsonNode\)\s*(.*)\s*:\s*null\s*,\s*"(.*?)"\s*,\s*container\.Add\s*\)/gm, 'container.Add("$3", $1 != null ? (Microsoft.Graph.PowerShell.Runtime.Json.JsonNode) $2 :"defaultnull")')
-        
-        $ = $.replace(/AddIf\(\s*null\s*!=\s*\(\(\(\(object\)\s*(this\._\w+)\)\)?.ToString\(\)\)\s*\?\s*\(\s*Microsoft\.Graph\.PowerShell\.Runtime\.Json\.JsonNode\)\s*new\s*Microsoft\.Graph\.PowerShell\.Runtime\.Json\.JsonString\((this\._\w+).ToString\(\)\)\s*:\s*null\s*,\s*"(.*?)"\s*,\s*container\.Add\s*\)/gm, 'container.Add("$3", $1 != null ? (Microsoft.Graph.PowerShell.Runtime.Json.JsonNode) new Microsoft.Graph.PowerShell.Runtime.Json.JsonString($2.ToString()) :"defaultnull)');
+
+        $ = $.replace(/AddIf\(\s*null\s*!=\s*\(\(\(\(object\)\s*(this\._\w+)\)\)?.ToString\(\)\)\s*\?\s*\(\s*Microsoft\.Graph\.PowerShell\.Runtime\.Json\.JsonNode\)\s*new\s*Microsoft\.Graph\.PowerShell\.Runtime\.Json\.JsonString\((this\._\w+).ToString\(\)\)\s*:\s*null\s*,\s*"(.*?)"\s*,\s*container\.Add\s*\)/gm, 'container.Add("$3", $1 != null ? (Microsoft.Graph.PowerShell.Runtime.Json.JsonNode) new Microsoft.Graph.PowerShell.Runtime.Json.JsonString($2.ToString()) :"defaultnull")');
 
         return $;
       }

tools/Custom/JsonExtensions.cs

@@ -0,0 +1,63 @@
+namespace Microsoft.Graph.PowerShell.JsonUtilities
+{
+    using Newtonsoft.Json.Linq;
+    using System.Linq;
+    using static Microsoft.Graph.PowerShell.Runtime.Extensions;
+
+    public static class JsonExtensions
+    {
+        /// <summary>
+        /// Removes JSON properties that have a value of "defaultnull" and converts properties with values of "null" or empty strings ("") to actual JSON null values.
+        /// </summary>
+        /// <param name="jsonObject">The JObject to process and clean.</param>
+        /// <returns>
+        /// A JSON string representation of the cleaned JObject with "defaultnull" properties removed and "null" or empty string values converted to JSON null.
+        /// </returns>
+        /// <example>
+        /// JObject json = JObject.Parse(@"{""name"": ""John"", ""email"": ""defaultnull"", ""address"": ""null""}");
+        /// string cleanedJson = json.RemoveDefaultNullProperties();
+        /// Console.WriteLine(cleanedJson);
+        /// // Output: { "name": "John", "address": null }
+        /// </example>
+        public static string RemoveDefaultNullProperties(this JObject jsonObject)
+        {
+            try
+            {
+                foreach (var property in jsonObject.Properties().ToList())
+                {
+                    if (property.Value.Type == JTokenType.Object)
+                    {
+                        RemoveDefaultNullProperties((JObject)property.Value);
+                    }
+                    else if (property.Value.Type == JTokenType.Array)
+                    {
+                        foreach (var item in property.Value)
+                        {
+                            if (item.Type == JTokenType.Object)
+                            {
+                                RemoveDefaultNullProperties((JObject)item);
+                            }
+                        }
+                    }
+                    else if (property.Value.Type == JTokenType.String && property.Value.ToString() == "defaultnull")
+                    {
+                        property.Remove();
+                    }
+                    else if (property.Value.Type == JTokenType.String && (property.Value.ToString() == "null" || property.Value.ToString() == ""))
+                    {
+                        property.Value = JValue.CreateNull();
+                    }
+                }
+            }
+            catch (System.Exception)
+            {
+                return jsonObject.ToString(); // Return the original string if parsing fails
+            }
+            return jsonObject.ToString();
+        }
+        public static string ReplaceAndRemoveSlashes(this string body)
+        {
+            return body.Replace("/", "").Replace("\\", "").Replace("rn", "").Replace("\"{", "{").Replace("}\"", "}");
+        }
+    }
+}