Remove duplicates in Search API fields

Author: YomesInc

CloudinaryDotNet.Tests/SearchTest.cs

@@ -0,0 +1,58 @@
+using System.Collections.Generic;
+using System.Linq;
+using Newtonsoft.Json.Linq;
+using NUnit.Framework;
+
+namespace CloudinaryDotNet.Tests
+{
+    public class SearchTest
+    {
+        private MockedCloudinary m_cloudinary = new MockedCloudinary();
+
+        [Test]
+        public void TestShouldNotDuplicateValues()
+        {
+            m_cloudinary
+                .Search()
+                .SortBy("created_at", "asc")
+                .SortBy("created_at", "desc")
+                .SortBy("public_id", "asc")
+                .Aggregate("format")
+                .Aggregate("format")
+                .Aggregate("resource_type")
+                .WithField("context")
+                .WithField("context")
+                .WithField("tags")
+                .Execute();
+
+            AssertCorrectRequest(m_cloudinary.HttpRequestContent);
+        }
+
+        private void AssertCorrectRequest(string request)
+        {
+            var requestJson = JToken.Parse(request);
+
+            Assert.IsNotNull(requestJson["sort_by"]);
+            Assert.AreEqual(
+                new List<Dictionary<string, string>>
+                {
+                    new Dictionary<string, string> { ["created_at"] = "desc" },
+                    new Dictionary<string, string> { ["public_id"] = "asc" }
+                },
+                requestJson["sort_by"]
+                    .Children<JObject>()
+                    .Select(item =>
+                        new Dictionary<string, string>
+                        {
+                            [item.Properties().First().Name] = item.Properties().First().Value.ToString()
+                        })
+                );
+
+            Assert.IsNotNull(requestJson["aggregate"]);
+            Assert.AreEqual(new[] { "format", "resource_type" }, requestJson["aggregate"].Values<string>());
+
+            Assert.IsNotNull(requestJson["with_field"]);
+            Assert.AreEqual(new[] { "context", "tags" }, requestJson["with_field"].Values<string>());
+        }
+    }
+}

CloudinaryDotNet/Search.cs

@@ -1,6 +1,7 @@
 namespace CloudinaryDotNet
 {
     using System.Collections.Generic;
+    using System.Linq;
     using System.Threading;
     using System.Threading.Tasks;
     using CloudinaryDotNet.Actions;
@@ -129,17 +130,17 @@ public Dictionary<string, object> ToQuery()
 
             if (withFieldParam.Count > 0)
             {
-                queryParams.Add("with_field", withFieldParam);
+                queryParams.Add("with_field", withFieldParam.Distinct());
             }
 
             if (sortByParam.Count > 0)
             {
-                queryParams.Add("sort_by", sortByParam);
+                queryParams.Add("sort_by", sortByParam.GroupBy(d => d.Keys.First()).Select(l => l.Last()));
             }
 
             if (aggregateParam.Count > 0)
             {
-                queryParams.Add("aggregate", aggregateParam);
+                queryParams.Add("aggregate", aggregateParam.Distinct());
             }
 
             return queryParams;