using System.ComponentModel;
using System.Windows;
using System.Windows.Input;
using HC_APTBS.ViewModels.Dialogs;

namespace HC_APTBS.Views.Dialogs
{
    /// <summary>
    /// Non-modal window showing immobilizer unlock progress.
    /// Prevents user-initiated closing until the unlock sequence completes;
    /// programmatic close via <see cref="ForceClose"/> always succeeds.
    /// Equivalent to the old <c>WUnlocker</c> window.
    /// </summary>
    public partial class UnlockProgressDialog : Window
    {
        private bool _forceClose;

        /// <summary>Creates the dialog and wires the ViewModel.</summary>
        public UnlockProgressDialog(UnlockProgressViewModel vm)
        {
            InitializeComponent();
            DataContext = vm;
            vm.RequestClose += ForceClose;
        }

        /// <summary>Closes the window unconditionally (bypasses the completion guard).</summary>
        public void ForceClose()
        {
            _forceClose = true;
            Close();
        }

        /// <summary>Allows dragging the borderless window by clicking anywhere.</summary>
        private void OnMouseDrag(object sender, MouseButtonEventArgs e)
        {
            if (e.ChangedButton == MouseButton.Left)
                DragMove();
        }

        /// <summary>Prevents user-initiated closing while the unlock sequence is still running.</summary>
        private void OnWindowClosing(object? sender, CancelEventArgs e)
        {
            if (_forceClose) return;

            if (DataContext is UnlockProgressViewModel vm && !vm.IsComplete)
                e.Cancel = true;
        }
    }
}