using Laservall.Solidworks.Common;
using Laservall.Solidworks.Extension;
using Laservall.Solidworks.Model;
using SolidWorks.Interop.sldworks;
using System.Diagnostics;
using System.Reflection;
using System.Threading.Tasks;
using System.Windows.Input;
using Xarial.XCad;
using Xarial.XCad.Documents;
using Xarial.XCad.Features;
using Xarial.XCad.SolidWorks.Documents;

namespace Laservall.Solidworks.Pane
{
    public class PartPropPaneViewModel : ViewModelBase
    {
        private IModelDoc2 _selectedDoc;

        private PartPropModel _model = new PartPropModel();
        public PartPropModel Model
        {
            get => _model;
            set => Set(ref _model, value);
        }

        private string _statusText;
        public string StatusText
        {
            get => _statusText;
            set => Set(ref _statusText, value);
        }

        private string _versionText;
        public string VersionText
        {
            get => _versionText;
            set => Set(ref _versionText, value);
        }

        private bool _isLoadingPartTypes;
        public bool IsLoadingPartTypes
        {
            get => _isLoadingPartTypes;
            set => Set(ref _isLoadingPartTypes, value);
        }

        public ICommand SaveCommand { get; }
        public ICommand ResetCommand { get; }
        public ICommand RefreshPartTypesCommand { get; }

        public PartPropPaneViewModel()
        {
            VersionText = $"Ver.{Assembly.GetExecutingAssembly().GetName().Version}";

            SaveCommand = new RelayCommand(ExecuteSave, CanSave);
            ResetCommand = new RelayCommand(ExecuteReset, CanReset);
            RefreshPartTypesCommand = new RelayCommand(async _ => await LoadPartTypesAsync());

            // 异步加载零件类型数据
            Task.Run(async () => await LoadPartTypesAsync());
        }

        /// <summary>
        /// 从PLM API加载零件类型数据
        /// </summary>
        private async Task LoadPartTypesAsync()
        {
            try
            {
                IsLoadingPartTypes = true;
                StatusText = "正在加载零件类型...";

                // 调用PLM API获取零件类型
                var partTypes = await PartTypeService.GetAllAsync();

                if (partTypes.Count > 0)
                {
                    // 注册到可搜索ComboBox编辑器
                    SearchableComboBoxPropertyEditor.RegisterPartTypes("零件类型", partTypes);
                    StatusText = $"已加载 {partTypes.Count} 个零件类型";
                }
                else
                {
                    StatusText = "未找到零件类型数据";
                }
            }
            catch (System.Exception ex)
            {
                Debug.WriteLine($"加载零件类型失败: {ex.Message}");
                StatusText = "加载零件类型失败";
            }
            finally
            {
                IsLoadingPartTypes = false;
            }
        }

        public void OnSelectionChanged(IXDocument doc, IXSelObject selObject)
        {
            IModelDoc2 resolvedDoc = null;

            if (selObject.OwnerDocument is IXDocument)
            {
                if (selObject is ISwPartComponent partComponent)
                {
                    resolvedDoc = (IModelDoc2)partComponent.Component.GetModelDoc();
                }
                else if (selObject is IXFeature feature)
                {
                    if (feature.Component is ISwComponent swPartComponent)
                    {
                        resolvedDoc = swPartComponent.Component.GetModelDoc() as IModelDoc2;
                    }
                    else if (feature.OwnerDocument != null)
                    {
                        resolvedDoc = (feature.OwnerDocument as ISwDocument).Model;
                    }
                }
            }

            if (selObject.OwnerDocument is ISwPart)
            {
                resolvedDoc = null;
            }

            _selectedDoc = resolvedDoc;

            if (_selectedDoc != null)
            {
                SWDocReader.ReadDocProperties(_selectedDoc, Model);
                StatusText = $"已加载: {_selectedDoc.GetTitle()}";
            }
            else
            {
                StatusText = "";
            }

            ((RelayCommand)SaveCommand).RaiseCanExecuteChanged();
            ((RelayCommand)ResetCommand).RaiseCanExecuteChanged();

            Debug.WriteLine($"OnSelectionChanged: {selObject.GetType()}");
        }

        private bool CanSave()
        {
            return _selectedDoc != null;
        }

        private void ExecuteSave()
        {
            if (_selectedDoc == null) return;
            SWDocWriter.WriteDocProperties(_selectedDoc, Model);
            StatusText = "属性已保存";
        }

        private bool CanReset()
        {
            return _selectedDoc != null;
        }

        private void ExecuteReset()
        {
            if (_selectedDoc == null) return;
            SWDocReader.ReadDocProperties(_selectedDoc, Model);
            StatusText = "属性已重置";
        }
    }
}