Add VertexAI Support

.gitignore

@@ -347,3 +347,8 @@ healthchecksdb
 
 # Backup folder for Package Reference Convert tool in Visual Studio 2017
 MigrationBackup/
+
+.idea/
+
+# Test Configuration Files
+Anthropic.SDK.Tests/appsettings.json

Anthropic.SDK.Tests/Anthropic.SDK.Tests.csproj

@@ -19,10 +19,23 @@
     <EmbeddedResource Include="Claude3ModelCard.pdf" />
     <EmbeddedResource Include="Red_Apple.jpg" />
   </ItemGroup>
+
+  <ItemGroup>
+    <Content Include="appsettings.json" Condition="Exists('appsettings.json')">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
+    <Content Include="appsettings.json.template">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Google.Cloud.AIPlatform.V1" Version="3.24.0" />
     <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="8.0.0" />
     <PackageReference Include="Microsoft.Extensions.AI" Version="9.3.0-preview.1.25161.3" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="8.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
     <PackageReference Include="Microsoft.SemanticKernel" Version="1.42.0" />
     <PackageReference Include="Microsoft.SemanticKernel.Abstractions" Version="1.42.0" />

Anthropic.SDK.Tests/TestSettings.cs

@@ -0,0 +1,48 @@
+using Google.Apis.Auth.OAuth2;
+using Microsoft.Extensions.Configuration;
+
+namespace Anthropic.SDK.Tests
+{
+    /// <summary>
+    /// Configuration settings for tests
+    /// </summary>
+    public class TestSettings
+    {
+        /// <summary>
+        /// VertexAI project ID for integration tests
+        /// </summary>
+        public string VertexAIProjectId { get; set; } = string.Empty;
+
+        /// <summary>
+        /// VertexAI region for integration tests
+        /// </summary>
+        public string VertexAIRegion { get; set; } = string.Empty;
+
+        public string VertexAIAccessToken { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Loads test settings from appsettings.json
+        /// </summary>
+        /// <returns>The test settings</returns>
+        public static TestSettings LoadSettings()
+        {
+            var configuration = new ConfigurationBuilder()
+                .SetBasePath(Directory.GetCurrentDirectory())
+                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
+                .Build();
+
+            var settings = new TestSettings();
+            configuration.GetSection("TestSettings").Bind(settings);
+
+            if (string.IsNullOrEmpty(settings.VertexAIAccessToken))
+            {
+                var credential = GoogleCredential.GetApplicationDefault()
+                    .CreateScoped("https://www.googleapis.com/auth/cloud-platform");
+
+                settings.VertexAIAccessToken = credential.UnderlyingCredential.GetAccessTokenForRequestAsync().Result;
+            }
+
+            return settings;
+        }
+    }
+}