add separate init pattern for FromEnv in Config.cs

src/typechat.examplesLib/Config.cs

@@ -40,6 +40,7 @@ public static OpenAIConfig LoadOpenAI(string? sectionName = null)
     {
         sectionName ??= "OpenAI";
         OpenAIConfig config = LoadConfig<OpenAIConfig>(DefaultConfigFile, DefaultConfigFile_Dev, sectionName);
+
         return config;
     }
 
@@ -48,8 +49,16 @@ public static OpenAIConfig LoadOpenAI(string? sectionName = null)
 
     public Config()
     {
-        _openAI = LoadOpenAI();
-        _openAIEmbeddings = LoadOpenAI("OpenAI_Embeddings");
+        if (File.Exists(DefaultConfigFile) || File.Exists(DefaultConfigFile_Dev))
+        {
+            _openAI = LoadOpenAI();
+            _openAIEmbeddings = LoadOpenAI("OpenAI_Embeddings");
+        }
+        else
+        {
+            _openAI = OpenAIConfig.FromEnvironment();
+            _openAIEmbeddings = OpenAIConfig.FromEnvironment(isEmbedding: true);
+        }
     }
 
     public OpenAIConfig OpenAI => _openAI;

tests/TypeChat.IntegrationTests/Readme.md

@@ -1,6 +1,6 @@
 # Running Tests
 The integration tests require an Open AI key and will just skip if one is not available. 
 To supply a key:
-- Create appSettings.Development.json in this folder and override the ApiKey property defined in appSettings.json
+- Create appSettings.Development.json in this folder and override the ApiKey property defined in appSettings.json.example
 - In Visual Studio, set File properties to Copy Always
 - Build

tests/TypeChat.IntegrationTests/TypeChat.IntegrationTests.csproj

@@ -31,7 +31,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <Content Include="appSettings.json" Link="appSettings.json">
+    <Content Include="appSettings.json.example" Link="appSettings.json.example">
     <CopyToOutputDirectory>Always</CopyToOutputDirectory>
   </Content>
   </ItemGroup>