using System;
using System.Threading.Tasks;
using System.Windows;
using HalconDotNet;
using TeamAAS.FlowEditor.Models;
using TeamAAS.FlowEditor.Plugins;
using TeamAAS.FlowEngine;
using TeamAAS.Vision;

namespace Plugins.Halcon.Views
{
    /// <summary>
    /// HALCON 算子专用高级编辑窗体（普通编辑=属性面板常用参数；高级编辑=本窗体）：
    ///  - 左侧参数面板：同一套模型属性（PropertyGridLib），改完即生效；
    ///  - 右侧大显示窗：HalconWindow（缩放/平移/ROI 绘制/保存），运行结果经图层总线渲染；
    ///  - 加载图像：从文件载入测试图并注册为流程「图像」输入变量（算子绑定 &{输入.图像} 时直接生效）；
    ///  - 执行：用当前流程注册表跑一遍该算子（与画布运行同一执行路径），状态栏回报结果与耗时。
    /// 窗体非模态（可边看流程边调参）。
    /// </summary>
    public partial class HalconToolAdvancedEditor : Window
    {
        private readonly BasePluginModel _model;
        private readonly HalconWindow _display;
        private IFlowNodePlugin _plugin;
        private bool _running;

        /// <summary>打开算子高级编辑窗体（非模态）。</summary>
        public static void Show(BasePluginModel model)
        {
            if (model == null) return;
            var win = new HalconToolAdvancedEditor(model);
            win.Show();
            win.Activate();
        }

        public HalconToolAdvancedEditor(BasePluginModel model)
        {
            InitializeComponent();
            _model = model;
            TxtTitle.Text = $"{model.ToolName ?? "Halcon 算子"}  ·  {model.NodeName}";
            Title = $"高级编辑 - {model.ToolName ?? model.GetType().Name}";

            // 普通参数面板（与属性面板同一套模型，双向实时同步）
            PropertyHost.Content = new PropertyGridLib.PropertyGrid { SelectedObject = model };

            // 大显示窗
            _display = new HalconWindow(1);
            _display.SetCaption(model.ToolName ?? "预览");
            DisplayHost.Content = _display;

            // 图层总线：该算子发布图层 → 渲染（整组：底图+叠加，区域自动附带原图）
            VisionLayerStore.Instance.LayerPublished += OnLayerPublished;
            Closed += (s, e) => VisionLayerStore.Instance.LayerPublished -= OnLayerPublished;
        }

        /// <summary>算子插件实例（懒创建；挂当前流程注册表，公式/输入变量按流程上下文解析）。</summary>
        private IFlowNodePlugin Plugin
        {
            get
            {
                if (_plugin == null)
                {
                    _plugin = PluginLoader.Instance.CreateInstance(_model.ToolName);
                    if (_plugin != null)
                    {
                        _plugin.GetModel = _model;
                        _plugin.Registry = PluginLoader.Instance.SelectFlow?.Registry;
                    }
                }
                return _plugin;
            }
        }

        /// <summary>该算子发布图层 → 整组渲染（含区域附带原图回退）。</summary>
        private void OnLayerPublished(LayerPublishArgs args)
        {
            if (args == null || _model == null) return;
            if (!string.Equals(args.FlowId, _model.FlowId, StringComparison.OrdinalIgnoreCase)) return;
            if (!string.Equals(args.NodeName, _model.NodeName, StringComparison.OrdinalIgnoreCase)) return;
            try
            {
                Dispatcher.Invoke(() =>
                {
                    var layers = LayerComboHelper.ResolveLayers(args, null, args.FlowId);
                    if (layers.Count > 0) _display.ShowLayers(layers);
                });
            }
            catch { }
        }

        /// <summary>执行：后台线程跑一遍该算子（不卡 UI），完成回报状态与耗时。</summary>
        private void BtnRun_Click(object sender, RoutedEventArgs e)
        {
            if (_running) return;
            var plugin = Plugin;
            if (plugin == null)
            {
                TxtStatus.Text = "创建插件实例失败（检查插件是否加载）";
                return;
            }
            _running = true;
            BtnRun.IsEnabled = false;
            TxtStatus.Text = "执行中…";

            Task.Run(() =>
            {
                try
                {
                    var status = plugin.Run(System.Threading.CancellationToken.None);
                    SetStatus($"执行完成: {status}，耗时 {plugin.CostTime}ms");
                }
                catch (Exception ex)
                {
                    SetStatus("执行失败: " + ex.Message);
                }
                finally
                {
                    try { Dispatcher.Invoke(() => { _running = false; BtnRun.IsEnabled = true; }); } catch { }
                }
            });
        }

        /// <summary>加载测试图像：注册为流程「图像」输入变量并立即预览。</summary>
        private void BtnLoadImage_Click(object sender, RoutedEventArgs e)
        {
            var dlg = new Microsoft.Win32.OpenFileDialog
            {
                Filter = "图像文件|*.png;*.jpg;*.jpeg;*.bmp;*.tif;*.tiff|所有文件|*.*",
                Title = "加载测试图像"
            };
            if (dlg.ShowDialog(this) != true) return;
            try
            {
                HOperatorSet.ReadImage(out HObject img, dlg.FileName);
                var registry = PluginLoader.Instance.SelectFlow?.Registry;
                if (!string.IsNullOrEmpty(_model.FlowId))
                    registry?.SetInputVariable(_model.FlowId, "图像", img);
                _display.RefreshImage(img);
                TxtStatus.Text = registry != null
                    ? "已加载图像并注册为输入变量「图像」"
                    : "已加载图像（未找到流程注册表，仅预览）";
            }
            catch (Exception ex)
            {
                TxtStatus.Text = "加载失败: " + ex.Message;
            }
        }

        private void SetStatus(string message)
        {
            try { Dispatcher.Invoke(() => TxtStatus.Text = message); } catch { }
        }
    }
}