using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using ModelContextProtocol.Server;
using System.ComponentModel;

internal class Program
{
    private static async Task Main(string[] args)
    {
        var builder = Host.CreateApplicationBuilder(args);
        builder.Logging.AddConsole(consoleLoggerOptions =>
        { 
            consoleLoggerOptions.LogToStandardErrorThreshold = LogLevel.Trace;
        });

        builder.Services.
            AddMcpServer().
            WithStdioServerTransport().
            WithToolsFromAssembly();

        await builder.Build().RunAsync();
    }
}

[McpServerToolType]
public static class EchoTool
{
    [McpServerTool, Description("Echoes the message back to the client.")]
    public static string Echo(string message) => $"Hello from C#: {message}";

    [McpServerTool, Description("Echoes in reverse the message sent by the client.")]
    public static string ReverseEcho(string message)
    {
        char[] charArray = message.ToCharArray();
        Array.Reverse(charArray);
        var reversed = new string(charArray);
        return reversed;
    }
}