using System;
using System.IO;
using System.Threading;
using System.Threading.Tasks;

namespace Launcher.Next.App;

/// <summary>Explicit automation of the same LocalParityLaunchService used by the main-window actions.</summary>
internal static class LocalParityLaunchCli
{
    public static async Task<int> RunAsync(string[] args)
    {
        if (args.Length != 4 || args[0] != "--mode" || args[1] != "LocalParityLaunch" || args[2] != "--config") return 2;
        try
        {
            var service = new LocalParityLaunchService();
            var prepared = await service.PrepareAsync(LocalParityLaunchService.LoadProfile(args[3]), CancellationToken.None);
            var launch = await service.LaunchAsync(prepared, CancellationToken.None);
            return launch.TerminalState == "Succeeded" ? 0 : 1;
        }
        catch (Exception exception)
        {
            // Explicit local mode: retain a bounded diagnostic next to its supplied profile.
            // Normal production and automation routes never take this path.
            try { await File.WriteAllTextAsync(Path.Combine(Path.GetDirectoryName(args[3])!, "local-parity-last-error.txt"), exception.ToString()); } catch { }
            return 1;
        }
    }
}