Implement equality checks for providers

src/NzbDrone.Core/Download/DownloadClientDefinition.cs

@@ -1,14 +1,35 @@
-using NzbDrone.Core.Indexers;
+using System;
+using Equ;
+using NzbDrone.Core.Indexers;
 using NzbDrone.Core.ThingiProvider;
 
 namespace NzbDrone.Core.Download
 {
-    public class DownloadClientDefinition : ProviderDefinition
+    public class DownloadClientDefinition : ProviderDefinition, IEquatable<DownloadClientDefinition>
     {
+        private static readonly MemberwiseEqualityComparer<DownloadClientDefinition> Comparer = MemberwiseEqualityComparer<DownloadClientDefinition>.ByProperties;
+
+        [MemberwiseEqualityIgnore]
         public DownloadProtocol Protocol { get; set; }
+
         public int Priority { get; set; } = 1;
 
         public bool RemoveCompletedDownloads { get; set; } = true;
         public bool RemoveFailedDownloads { get; set; } = true;
+
+        public bool Equals(DownloadClientDefinition other)
+        {
+            return Comparer.Equals(this, other);
+        }
+
+        public override bool Equals(object obj)
+        {
+            return Equals(obj as DownloadClientDefinition);
+        }
+
+        public override int GetHashCode()
+        {
+            return Comparer.GetHashCode(this);
+        }
     }
 }