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

namespace HC_APTBS.ViewModels.Dialogs
{
    /// <summary>
    /// Generic Yes/No (or Confirm/Cancel) modal dialog view-model.
    ///
    /// <para>Reusable across abort-test, skip-phase, delete-pump, and any future
    /// binary decision prompt. Caller sets <see cref="Title"/>, <see cref="Message"/>,
    /// <see cref="ConfirmText"/>, <see cref="CancelText"/> before showing the dialog,
    /// then inspects <see cref="Accepted"/> after the dialog closes.</para>
    /// </summary>
    public sealed partial class ConfirmDialogViewModel : ObservableObject
    {
        /// <summary>Window title.</summary>
        [ObservableProperty] private string _title = string.Empty;

        /// <summary>Body message — may be multi-line.</summary>
        [ObservableProperty] private string _message = string.Empty;

        /// <summary>Text shown on the positive-action button (defaults to a localised "OK").</summary>
        [ObservableProperty] private string _confirmText = "OK";

        /// <summary>Text shown on the cancel button (defaults to a localised "Cancel").</summary>
        [ObservableProperty] private string _cancelText = "Cancel";

        /// <summary>True when the operator clicked <see cref="ConfirmText"/>; false on cancel/close.</summary>
        public bool Accepted { get; private set; }

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

        /// <summary>Accepts the prompt — sets <see cref="Accepted"/> to true and closes.</summary>
        [RelayCommand]
        private void Confirm()
        {
            Accepted = true;
            RequestClose?.Invoke();
        }

        /// <summary>Cancels the prompt — leaves <see cref="Accepted"/> false and closes.</summary>
        [RelayCommand]
        private void Cancel()
        {
            Accepted = false;
            RequestClose?.Invoke();
        }
    }
}