Fix for FilePurpose (#369)

Author: joseharriaga

api/OpenAI.net8.0.cs

@@ -1770,7 +1770,8 @@ public enum FilePurpose {
         FineTune = 4,
         FineTuneResults = 5,
         Vision = 6,
-        UserData = 7
+        UserData = 7,
+        Evaluations = 8
     }
     [Obsolete("This struct is obsolete. If this is a fine-tuning training file, it may take some time to process after it has been uploaded. While the file is processing, you can still create a fine-tuning job but it will not start until the file processing has completed.")]
     public enum FileStatus {

api/OpenAI.netstandard2.0.cs

@@ -1681,7 +1681,8 @@ public enum FilePurpose {
         FineTune = 4,
         FineTuneResults = 5,
         Vision = 6,
-        UserData = 7
+        UserData = 7,
+        Evaluations = 8
     }
     [Obsolete("This struct is obsolete. If this is a fine-tuning training file, it may take some time to process after it has been uploaded. While the file is processing, you can still create a fine-tuning job but it will not start until the file processing has completed.")]
     public enum FileStatus {

src/Custom/Files/FilePurpose.Serialization.cs

@@ -18,7 +18,49 @@ internal static partial class FilePurposeExtensions
             FilePurpose.FineTuneResults => "fine-tune-results",
             FilePurpose.Vision => "vision",
             FilePurpose.UserData => "user_data",
+            FilePurpose.Evaluations => "evals",
             _ => throw new ArgumentOutOfRangeException(nameof(value), value, "Unknown FilePurpose value.")
         };
+
+        public static FilePurpose ToFilePurpose(this string value)
+        {
+            if (StringComparer.OrdinalIgnoreCase.Equals(value, "assistants"))
+            {
+                return FilePurpose.Assistants;
+            }
+            if (StringComparer.OrdinalIgnoreCase.Equals(value, "assistants_output"))
+            {
+                return FilePurpose.AssistantsOutput;
+            }
+            if (StringComparer.OrdinalIgnoreCase.Equals(value, "batch"))
+            {
+                return FilePurpose.Batch;
+            }
+            if (StringComparer.OrdinalIgnoreCase.Equals(value, "batch_output"))
+            {
+                return FilePurpose.BatchOutput;
+            }
+            if (StringComparer.OrdinalIgnoreCase.Equals(value, "fine-tune"))
+            {
+                return FilePurpose.FineTune;
+            }
+            if (StringComparer.OrdinalIgnoreCase.Equals(value, "fine-tune-results"))
+            {
+                return FilePurpose.FineTuneResults;
+            }
+            if (StringComparer.OrdinalIgnoreCase.Equals(value, "vision"))
+            {
+                return FilePurpose.Vision;
+            }
+            if (StringComparer.OrdinalIgnoreCase.Equals(value, "user_data"))
+            {
+                return FilePurpose.UserData;
+            }
+            if (StringComparer.OrdinalIgnoreCase.Equals(value, "evals"))
+            {
+                return FilePurpose.Evaluations;
+            }
+            throw new ArgumentOutOfRangeException(nameof(value), value, "Unknown FilePurpose value.");
+        }
     }
 }

src/Custom/Files/FilePurpose.cs

@@ -18,4 +18,6 @@ public enum FilePurpose
     Vision,
 
     UserData,
+
+    Evaluations,
 }