HC_APTBS/ViewModels/Dialogs/RpmSafetyWarningViewModel.cs

using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;

namespace HC_APTBS.ViewModels.Dialogs
{
    /// <summary>
    /// Result of the RPM safety warning dialog.
    /// </summary>
    public enum RpmSafetyResult
    {
        /// <summary>User cancelled — do not start the motor.</summary>
        Cancel,

        /// <summary>Turn on oil pump first, then start the motor.</summary>
        ProceedWithOil,

        /// <summary>Proceed without oil pump (operator acknowledges risk).</summary>
        ProceedWithoutOil
    }

    /// <summary>
    /// ViewModel for the RPM safety warning dialog shown when the operator
    /// starts the bench motor while the oil pump is OFF.
    /// Equivalent to the old <c>WCareOnRpmOn</c> dialog.
    /// </summary>
    public sealed partial class RpmSafetyWarningViewModel : ObservableObject
    {
        // ── Dialog result ─────────────────────────────────────────────────────────

        /// <summary>The operator's chosen action.</summary>
        public RpmSafetyResult Result { get; private set; } = RpmSafetyResult.Cancel;

        // ── Radio button selection ────────────────────────────────────────────────

        /// <summary>True when the "turn on oil pump and proceed" option is selected.</summary>
        [ObservableProperty]
        [NotifyCanExecuteChangedFor(nameof(AcceptCommand))]
        private bool _isOilAndProceedSelected;

        /// <summary>True when the "proceed without oil" option is selected.</summary>
        [ObservableProperty]
        [NotifyCanExecuteChangedFor(nameof(AcceptCommand))]
        private bool _isProceedWithoutOilSelected;

        // ── Commands ──────────────────────────────────────────────────────────────

        /// <summary>Accepts the selected option and closes the dialog.</summary>
        [RelayCommand(CanExecute = nameof(CanAccept))]
        private void Accept()
        {
            Result = IsOilAndProceedSelected
                ? RpmSafetyResult.ProceedWithOil
                : RpmSafetyResult.ProceedWithoutOil;
            RequestClose?.Invoke();
        }

        private bool CanAccept() => IsOilAndProceedSelected || IsProceedWithoutOilSelected;

        /// <summary>Cancels and closes the dialog.</summary>
        [RelayCommand]
        private void Cancel()
        {
            Result = RpmSafetyResult.Cancel;
            RequestClose?.Invoke();
        }

        // ── Events ────────────────────────────────────────────────────────────────

        /// <summary>Raised when the dialog should close itself.</summary>
        public event System.Action? RequestClose;
    }
}