using System.Collections.Specialized;
using System.ComponentModel;
using System.Windows;
using XP.Common.Logging.Interfaces;
using XP.Hardware.Plc.Abstractions;
using XP.Hardware.PLC.ViewModels;

namespace XP.Hardware.PLC.Views
{
    /// <summary>
    /// PLC 测试工具窗口 Code-Behind | PLC Test Bench Window Code-Behind
    /// </summary>
    public partial class PlcTestBenchWindow : Window
    {
        private readonly PlcTestBenchViewModel _viewModel;

        /// <summary>
        /// 构造函数 | Constructor
        /// </summary>
        /// <param name="plcClient">PLC 客户端接口 | PLC client interface</param>
        /// <param name="logger">日志服务 | Logger service</param>
        public PlcTestBenchWindow(IPlcClient plcClient, ILoggerService logger)
        {
            InitializeComponent();
            _viewModel = new PlcTestBenchViewModel(plcClient, logger);
            DataContext = _viewModel;

            // 继承主窗口图标
            if (Application.Current?.MainWindow != null)
            {
                Icon = Application.Current.MainWindow.Icon;
            }

            // 订阅日志集合变化，自动滚动到最新条目 | Subscribe to log collection changes for auto-scroll
            _viewModel.LogEntries.CollectionChanged += LogEntries_CollectionChanged;
        }

        /// <summary>
        /// 日志集合变化时自动滚动到最新条目 | Auto-scroll to latest entry on collection change
        /// </summary>
        private void LogEntries_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
        {
            if (e.Action == NotifyCollectionChangedAction.Add && _viewModel.LogEntries.Count > 0)
            {
                // 使用 Dispatcher 延迟执行，确保 UI 渲染完成后再滚动 | Use Dispatcher to ensure UI rendering is complete before scrolling
                Dispatcher.InvokeAsync(() =>
                {
                    LogListBox.ScrollIntoView(_viewModel.LogEntries[_viewModel.LogEntries.Count - 1]);
                }, System.Windows.Threading.DispatcherPriority.Background);
            }
        }

        /// <summary>
        /// 窗口关闭时释放资源 | Release resources on window closing
        /// </summary>
        protected override void OnClosing(CancelEventArgs e)
        {
            _viewModel?.Cleanup();
            base.OnClosing(e);
        }
    }
}