using System.CommandLine;
using System.Text.Json;
using StellaOps.Aoc.Cli.Commands;

namespace StellaOps.Aoc.Cli;

public static class Program
{
    private const string DeprecationDate = "2025-07-01";
    private const string MigrationUrl = "https://docs.stellaops.io/cli/migration";

    public static async Task<int> Main(string[] args)
    {
        // Emit deprecation warning
        EmitDeprecationWarning();

        var rootCommand = new RootCommand("StellaOps AOC CLI - Verify append-only contract compliance")
        {
            VerifyCommand.Create()
        };

        return await rootCommand.InvokeAsync(args);
    }

    private static void EmitDeprecationWarning()
    {
        var originalColor = Console.ForegroundColor;
        Console.ForegroundColor = ConsoleColor.Yellow;
        Console.Error.WriteLine();
        Console.Error.WriteLine("================================================================================");
        Console.Error.WriteLine("[DEPRECATED] stella-aoc is deprecated and will be removed on " + DeprecationDate + ".");
        Console.Error.WriteLine();
        Console.Error.WriteLine("Please migrate to the unified stella CLI:");
        Console.Error.WriteLine("  stella aoc verify --since <ref> --postgres <conn>");
        Console.Error.WriteLine();
        Console.Error.WriteLine("Migration guide: " + MigrationUrl);
        Console.Error.WriteLine("================================================================================");
        Console.Error.WriteLine();
        Console.ForegroundColor = originalColor;
    }
}