chore: import upstream snapshot with attribution

dotnet/samples/AgentFrameworkMigration/OpenAI/Step01_Basics/Program.cs

@@ -0,0 +1,100 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Agents.AI;
+using Microsoft.SemanticKernel;
+using Microsoft.SemanticKernel.Agents;
+using Microsoft.SemanticKernel.Connectors.OpenAI;
+using OpenAI;
+using OpenAI.Chat;
+
+var apiKey = Environment.GetEnvironmentVariable("OPENAI_API_KEY") ?? throw new InvalidOperationException("OPENAI_API_KEY is not set.");
+var model = System.Environment.GetEnvironmentVariable("OPENAI_MODEL") ?? "gpt-4o";
+var userInput = "Tell me a joke about a pirate.";
+
+Console.WriteLine($"User Input: {userInput}");
+
+await SKAgentAsync();
+await SKAgent_As_AFAgentAsync();
+await AFAgentAsync();
+
+// Example of Semantic Kernel Agent code
+async Task SKAgentAsync()
+{
+    Console.WriteLine("\n=== SK Agent ===\n");
+
+    var builder = Kernel.CreateBuilder().AddOpenAIChatClient(model, apiKey);
+
+    var agent = new ChatCompletionAgent()
+    {
+        Kernel = builder.Build(),
+        Name = "Joker",
+        Instructions = "You are good at telling jokes.",
+    };
+
+    var thread = new ChatHistoryAgentThread();
+    var settings = new OpenAIPromptExecutionSettings() { MaxTokens = 1000 };
+    var agentOptions = new AgentInvokeOptions() { KernelArguments = new(settings) };
+
+    await foreach (var result in agent.InvokeAsync(userInput, thread, agentOptions))
+    {
+        Console.WriteLine(result.Message);
+    }
+
+    Console.WriteLine("---");
+    await foreach (var update in agent.InvokeStreamingAsync(userInput, thread, agentOptions))
+    {
+        Console.Write(update.Message);
+    }
+}
+
+// Example of Semantic Kernel Agent code converted as an Agent Framework Agent
+async Task SKAgent_As_AFAgentAsync()
+{
+    Console.WriteLine("\n=== SK Agent Converted as an AF Agent ===\n");
+
+    var builder = Kernel.CreateBuilder().AddOpenAIChatClient(model, apiKey);
+
+#pragma warning disable SKEXP0110 // Type is for evaluation purposes only and is subject to change or removal in future updates. Suppress this diagnostic to proceed.
+
+    var agent = new ChatCompletionAgent()
+    {
+        Kernel = builder.Build(),
+        Name = "Joker",
+        Instructions = "You are good at telling jokes.",
+    }.AsAIAgent();
+
+#pragma warning restore SKEXP0110 // Type is for evaluation purposes only and is subject to change or removal in future updates. Suppress this diagnostic to proceed.
+
+    var thread = await agent.CreateSessionAsync();
+    var agentOptions = new ChatClientAgentRunOptions(new() { MaxOutputTokens = 1000 });
+
+    var result = await agent.RunAsync(userInput, thread, agentOptions);
+    Console.WriteLine(result);
+
+    Console.WriteLine("---");
+    await foreach (var update in agent.RunStreamingAsync(userInput, thread, agentOptions))
+    {
+        Console.Write(update);
+    }
+}
+
+// Example of a fully migrated Agent Framework Agent code
+async Task AFAgentAsync()
+{
+    Console.WriteLine("\n=== AF Agent ===\n");
+
+    var agent = new OpenAIClient(apiKey).GetChatClient(model)
+        .AsAIAgent(name: "Joker", instructions: "You are good at telling jokes.");
+
+    var thread = await agent.CreateSessionAsync();
+    var agentOptions = new ChatClientAgentRunOptions(new() { MaxOutputTokens = 1000 });
+
+    var result = await agent.RunAsync(userInput, thread, agentOptions);
+    Console.WriteLine(result);
+
+    Console.WriteLine("---");
+    await foreach (var update in agent.RunStreamingAsync(userInput, thread, agentOptions))
+    {
+        Console.Write(update);
+    }
+}