using Microsoft.Win32;

namespace KronaStaffTerminal.Services;

public static class StartupService
{
    private const string RunKey = @"Software\Microsoft\Windows\CurrentVersion\Run";
    private const string ValueName = "KronaStaffTerminal";

    public static void SetEnabled(bool enabled)
    {
        using var key = Registry.CurrentUser.OpenSubKey(RunKey, writable: true)
            ?? Registry.CurrentUser.CreateSubKey(RunKey, writable: true);
        if (enabled)
        {
            var executablePath = ResolveExecutablePath();
            key.SetValue(ValueName, $"\"{executablePath}\" --autostart", RegistryValueKind.String);
        }
        else
        {
            key.DeleteValue(ValueName, throwOnMissingValue: false);
        }
    }

    private static string ResolveExecutablePath()
    {
        var executablePath = Environment.ProcessPath
            ?? throw new InvalidOperationException("Не удалось определить путь программы.");
        var debugSegment = $"{Path.DirectorySeparatorChar}Debug{Path.DirectorySeparatorChar}";
        if (!executablePath.Contains(debugSegment, StringComparison.OrdinalIgnoreCase)) return executablePath;

        var releasePath = executablePath.Replace(
            debugSegment,
            $"{Path.DirectorySeparatorChar}Release{Path.DirectorySeparatorChar}",
            StringComparison.OrdinalIgnoreCase);
        if (File.Exists(releasePath)) return releasePath;
        throw new InvalidOperationException("Автозагрузка доступна после сборки Release-версии программы.");
    }

    public static bool IsEnabled()
    {
        using var key = Registry.CurrentUser.OpenSubKey(RunKey);
        return key?.GetValue(ValueName) is string;
    }
}