feat: insert region on client's constructor

Author: diegofesanto

Functions/Client.cs

@@ -10,7 +10,6 @@
 using Supabase.Core.Extensions;
 using Supabase.Functions.Exceptions;
 using Supabase.Functions.Interfaces;
-using Supabase.Functions.Responses;
 
 [assembly: InternalsVisibleTo("FunctionsTests")]
 
@@ -21,6 +20,7 @@ public partial class Client : IFunctionsClient
     {
         private HttpClient _httpClient = new HttpClient();
         private readonly string _baseUrl;
+        private FunctionRegion _region;
 
         /// <summary>
         /// Function that can be set to return dynamic headers.
@@ -33,9 +33,11 @@ public partial class Client : IFunctionsClient
         /// Initializes a functions client
         /// </summary>
         /// <param name="baseUrl"></param>
-        public Client(string baseUrl)
+        /// <param name="region"></param>
+        public Client(string baseUrl, FunctionRegion? region = null)
         {
             _baseUrl = baseUrl;
+            _region = region ?? FunctionRegion.Any;
         }
 
         /// <summary>
@@ -126,9 +128,14 @@ private async Task<HttpResponseMessage> HandleRequest(
 
             options.Headers["X-Client-Info"] = Util.GetAssemblyVersion(typeof(Client));
 
-            if (options.FunctionRegion != FunctionRegion.Any)
+            if (options.FunctionRegion != null)
             {
-                options.Headers["x-region"] = options.FunctionRegion.ToString();
+                _region = options.FunctionRegion;
+            }
+
+            if (_region != FunctionRegion.Any)
+            {
+                options.Headers["x-region"] = _region.ToString();
             }
 
             var builder = new UriBuilder(url);

Functions/InvokeFunctionOptions.cs

@@ -40,15 +40,15 @@ public class InvokeFunctionOptions
             /// <summary>
             /// Region of the request
             /// </summary>
-            public FunctionRegion FunctionRegion { get; set; } = FunctionRegion.Any;
+            public FunctionRegion? FunctionRegion { get; set; } = null;
         }
 
         /// <summary>
         /// Define the region for requests
         /// </summary>
         public class FunctionRegion : IEquatable<FunctionRegion>
         {
-            private string _region;
+            private readonly string _region;
 
             /// <summary>
             /// Empty region
@@ -170,7 +170,7 @@ public bool Equals(FunctionRegion other)
             /// <summary>
             /// Overloading the operator !=
             /// </summary>
-            public static bool operator !=(FunctionRegion left, FunctionRegion right) =>
+            public static bool operator !=(FunctionRegion? left, FunctionRegion? right) =>
                 !Equals(left, right);
 
             /// <summary>