Add JTokenExtensions.ThrowIfHasErrors

Author: chasedog

RedditSharp/Exceptions/RedditException.cs

@@ -1,4 +1,5 @@
 using System;
+using Newtonsoft.Json.Linq;
 
 namespace RedditSharp
 {
@@ -8,6 +9,8 @@ namespace RedditSharp
     [Serializable]
     public class RedditException : Exception
     {
+        public JArray Errors { get; }
+
         /// <summary>
         /// Initializes a new instance of the RedditException class.
         /// </summary>
@@ -26,6 +29,17 @@ public RedditException(string message)
 
         }
 
+        /// <summary>
+        /// Initializes a new instance of the RedditException class with a specified error message and a JArray of errors
+        /// </summary>
+        /// <param name="message">The message that describes the error.</param>
+        /// <param name="errors">List of errors.</param>
+        public RedditException(string message, JArray errors)
+            : base(message)
+        {
+            Errors = errors;
+        }
+
         /// <summary>
         /// Initializes a new instance of the RedditException class with a specified error message and
         /// a referenced inner exception that is the cause of this exception.

RedditSharp/Extensions/JTokenExtensions/JTokenExtensions.cs

@@ -0,0 +1,33 @@
+using Newtonsoft.Json.Linq;
+
+namespace RedditSharp.Extensions.JTokenExtensions
+{
+    public static class JTokenExtensions
+    {
+        public static void ThrowIfHasErrors(this JToken json, string message)
+        {
+            if (json["errors"].IsNonEmptyArray(out var errors))
+            {
+                throw new RedditException($"{message} {errors}", errors);
+            }
+        }
+
+        public static bool IsNonEmptyArray(this JToken json, out JArray array)
+        {
+            var isArray = _IsArray(json, out array);
+            return isArray && array.Count > 0;
+        }
+
+        private static bool _IsArray(JToken json, out JArray array)
+        {
+            if (json != null && json.Type == JTokenType.Array)
+            {
+                array = (JArray)json;
+                return true;
+            }
+            array = default;
+            return false;
+
+        }
+    }
+}