using Amazon.BedrockRuntime;
using Microsoft.Extensions.AI;
using Microsoft.Extensions.DependencyInjection;
using System.Globalization;

var services = new ServiceCollection();
services.TryAddAWSService<IAmazonBedrockRuntime>();

var runtime = services.BuildServiceProvider().GetRequiredService<IAmazonBedrockRuntime>();

var chatClient = runtime.AsIChatClient().AsBuilder().UseFunctionInvocation().Build();

var aiFunction = AIFunctionFactory.Create(() => DateTime.UtcNow.ToString("d", CultureInfo.InvariantCulture), "GetCurrentDate", "Returns the current date in UTC format.");

var chatOptions = new ChatOptions
{
    ModelId = "anthropic.claude-3-5-sonnet-20240620-v1:0",
    Tools = [aiFunction],
};

var response = await chatClient.GetResponseAsync([
    new ChatMessage(ChatRole.User, "What is the current date?"),
], chatOptions);

Console.WriteLine($"Response: {response}");