using Aitex.Core.RT.Log;
using Aitex.Core.UI.View.Common;
using Aitex.UI.RecipeEditor;
using Aitex.UI.RecipeEditor.View;
using Prism.Commands;
using Prism.Mvvm;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Xml;
using Venus_MainPages.PMs;
using Venus_MainPages.Views;
using WPF.Themes.UserControls;

namespace Venus_MainPages.ViewModels
{
    internal class RecipeViewModel : BindableBase
    {
        #region 私有字段
        private string m_Title;
       
        private string m_chamId = "PMA";
        private string m_CurrentRecipeName;


        private UiRecipeManager m_uiRecipeManager = new UiRecipeManager();
        private RecipeView recipeView;
        private TreeView treeViewRcpList;
        private RecipeEditorControl tableRecipeGrid;
        #endregion

        #region  属性
        public string Title
        {
            get { return m_Title; }
            set { SetProperty(ref m_Title, value); }
        }

        public string CurrentRecipeName
        {
            get { return m_CurrentRecipeName; }
            set { SetProperty(ref m_CurrentRecipeName, value); }
        }
        #endregion

        #region 命令
        private DelegateCommand _NewCommand;
        public DelegateCommand NewCommand =>
            _NewCommand ?? (_NewCommand = new DelegateCommand(OnNew));

        private DelegateCommand _ReNameCommand;
        public DelegateCommand ReNameCommand =>
            _ReNameCommand ?? (_ReNameCommand = new DelegateCommand(OnReName));

        private DelegateCommand _DeleteCommand;
        public DelegateCommand DeleteCommand =>
            _DeleteCommand ?? (_DeleteCommand = new DelegateCommand(OnDelete));

        private DelegateCommand<Object> _MouseRightButtonDownCommand;
        public DelegateCommand<Object> MouseRightButtonDownCommand =>
            _MouseRightButtonDownCommand ?? (_MouseRightButtonDownCommand = new DelegateCommand<Object>(OnMouseRightButtonDown));

        private DelegateCommand<Object> _LoadedCommand;
        public DelegateCommand<Object> LoadedCommand =>
            _LoadedCommand ?? (_LoadedCommand = new DelegateCommand<Object>(OnLoaded));
        #endregion

        #region 构造函数
        public RecipeViewModel()
        {
            Title = "配方管理";
        }
        #endregion

        #region 方法
        private void OnNew()
        {

        }
        private void OnReName()
        {

        }
        private void OnDelete()
        {

        }

        private void OnLoaded(Object myrecipeView)
        {
            recipeView = myrecipeView as RecipeView;
            treeViewRcpList = recipeView.treeViewRcpList;
            tableRecipeGrid = recipeView.tableRecipeGrid;
            UpdateRecipeFileList();
            treeViewRcpList.SelectedItemChanged += TreeViewRcpList_SelectedItemChanged;
        }

        private void TreeViewRcpList_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
        {
            if (tableRecipeGrid.IsRecipeModified)
            {
                //if (permission == ViewPermission.FullyControl)
                {
                    switch (MessageBox.Show(string.Format(Application.Current.Resources["GlobalLableMsgSaveCurrentRecipe"].ToString(), CurrentRecipeName), Application.Current.Resources["GlobalLableTitleRecipeEditor"].ToString(), MessageBoxButton.YesNo, MessageBoxImage.Question))
                    {
                        case MessageBoxResult.Yes:
                            if (SaveRecipeV())
                            {
                                var item = e.NewValue as TreeViewFileItem;
                                if (item != null)
                                    item.IsSelected = true;
                            }
                            else
                            {
                                var item = e.OldValue as TreeViewFileItem;
                                if (item != null)
                                    item.IsSelected = true;
                                return;
                            }
                            break;
                        case MessageBoxResult.No:
                            {
                                var item = e.NewValue as TreeViewFileItem;
                                if (item != null)
                                    item.IsSelected = true;
                            }
                            break;
                    }
                }
            }
            var selectedItem = e.NewValue as TreeViewFileItem;
            if (selectedItem == null)
                return;
            try
            {
                CurrentRecipeName = selectedItem.FileName;
                string xmlRecipeData = m_uiRecipeManager.LoadRecipe(m_chamId,selectedItem.FileName);
                this.tableRecipeGrid.ControlViewModel.LoadRecipe(RecipeFormat, xmlRecipeData);
            }
            catch (Exception ex)
            {
                //LOG.Write(ex);
                MessageBox.Show(string.Format(Application.Current.Resources["GlobalLableTitleRecipeEditor"].ToString(), ex.Message), Application.Current.Resources["GlobalLableTitleRecipeEditor"].ToString(), MessageBoxButton.OK, MessageBoxImage.Error);
            }
        }

        /// <summary>
        /// Recipe format
        /// </summary>
        public string RecipeFormat
        {
            get
            {
                return m_uiRecipeManager.GetRecipeFormatXml(m_chamId);
            }
        }

        private bool SaveRecipeV(string flag = "Single")
        {
            bool ret = true;
            try
            {
                var hasErr = this.tableRecipeGrid.ControlViewModel.Errors.Count > 0;
                if (!hasErr ||
                    MessageBox.Show(Application.Current.Resources["GlobalLableMsgRecipeSaveInfo"].ToString(), Application.Current.Resources["GlobalLableTitleRecipeEditor"].ToString(), MessageBoxButton.YesNoCancel, MessageBoxImage.Warning) == MessageBoxResult.Yes)
                {
                        ret = SaveRecipe(CurrentRecipeName, this.tableRecipeGrid.ControlViewModel.GetRecipeContentString());

                        tableRecipeGrid.Dispatcher.Invoke(new System.Action(() =>
                        {
                            tableRecipeGrid.ControlViewModel.LoadRecipe(RecipeFormat, LoadRecipe(CurrentRecipeName));
                        }));
                }
                else
                {
                    ret = false;
                }
            }
            catch (Exception ex)
            {
                //LOG.Write(ex);
                MessageBox.Show(Application.Current.Resources["GlobalLableMsgRecipeSaveException"].ToString(), Application.Current.Resources["GlobalLableTitleRecipeEditor"].ToString(), MessageBoxButton.OK, MessageBoxImage.Warning);
                ret = false;
            }
            return ret;
        }

        /// <summary>
        /// Load recipe data by recipe name
        /// </summary>
        /// <param name="receipeName"></param>
        /// <returns></returns>
        public string LoadRecipe(string receipeName)
        {
            return m_uiRecipeManager.LoadRecipe(m_chamId, receipeName);
        }

        /// <summary>
        /// Save recipe by recipe name and recipe data
        /// </summary>
        /// <param name="recipeName"></param>
        /// <param name="recipe"></param>
        /// <returns></returns>
        public bool SaveRecipe(string recipeName, string recipeContent)
        {
            return m_uiRecipeManager.SaveRecipe(m_chamId, recipeName, recipeContent);
        }

        /// <summary>
        /// 右击TreeView，上下文菜单选择功能
        /// </summary>
        /// <param name="treeView"></param>
        private void OnMouseRightButtonDown(Object treeView)
        {
            //treeViewRcpList = treeView as TreeView;

            treeViewRcpList.ContextMenu = new ContextMenu() { Background = new SolidColorBrush(Colors.AliceBlue)};

            MenuItem menuItem = new MenuItem();

            menuItem = new MenuItem();
            menuItem.Tag = "\\";
            menuItem.Click += new RoutedEventHandler(menuItem_MouseClick_CreateRecipe);
            menuItem.Header = Application.Current.Resources["GlobalLableMenuNewRecipe"];
            treeViewRcpList.ContextMenu.Items.Add(menuItem);

            menuItem = new MenuItem();
            menuItem.Tag = "\\";
            //menuItem.Click += new RoutedEventHandler(menuItem_MouseClick_ImportRecipe);
            menuItem.Header = Application.Current.Resources["GlobalLableMenuImportRecipe"];
            treeViewRcpList.ContextMenu.Items.Add(menuItem);

           treeViewRcpList.ContextMenu.Items.Add(new Separator());

            menuItem = new MenuItem();
            menuItem.Tag = "\\";
            //menuItem.Click += new RoutedEventHandler(menuItem_MouseClick_CreateFolder);
            menuItem.Header = Application.Current.Resources["GlobalLableMenuNewFolder"];
            treeViewRcpList.ContextMenu.Items.Add(menuItem);

            treeViewRcpList.ContextMenu.Visibility = Visibility.Visible;
        }

        /// <summary>
        /// 创建新的配方
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void menuItem_MouseClick_CreateRecipe(object sender, RoutedEventArgs e)
        {
            MenuItem mit = sender as MenuItem;
            string folderName = mit.Tag as string;
            PerformCreateRecipe(folderName);
        }

        private void PerformCreateRecipe(string folderName)
        {
            try
            {
                RecipeNameInputDlg dlg = new RecipeNameInputDlg(Application.Current.Resources["GlobalLableMsgInputRecipeName"].ToString())
                {
                    Owner = Application.Current.MainWindow
                };
                if (dlg.ShowDialog() == true)
                {
                    var recipeName = folderName + "\\" + dlg.InputText;
                    string recipeContent = m_uiRecipeManager.GetRecipeTemplate(m_chamId);

                    //m_uiRecipeManager.SaveAsRecipe(m_chamId, recipeName, m_uiRecipeManager.LoadRecipe("system",folderName));
                    if (SaveAsRecipe(recipeName, RecipeTemplate))
                    {
                        UpdateRecipeFileList();
                        SelectRecipe(recipeName);
                    }
                    else
                    {
                        WPFMessageBox.ShowError("Error");
                    }
                }
            }
            catch (Exception ex)
            {
                //LOG.Write(ex);
                MessageBox.Show(string.Format(Application.Current.Resources["GlobalLableMsgRecipeCreateException"].ToString(), ex.Message), Application.Current.Resources["GlobalLableTitleRecipeEditor"].ToString(), MessageBoxButton.OK, MessageBoxImage.Error);
            }
        }

        /// <summary>
        /// SaveAs recipe by recipe name and recipe data
        /// </summary>
        /// <param name="recipeName"></param>
        /// <param name="recipe"></param>
        /// <returns></returns>
        public bool SaveAsRecipe(string recipeName, string recipeContent)
        {
            return m_uiRecipeManager.SaveAsRecipe(m_chamId, recipeName, recipeContent);
        }
        /// <summary>
        /// Recipe template
        /// </summary>
        public string RecipeTemplate
        {
            get
            {
                string template = m_uiRecipeManager.GetRecipeTemplate(m_chamId);
                return template;
            }
        }

        private void UpdateRecipeFileList()
        {
            XmlDocument doc = new XmlDocument();
            doc.LoadXml(GetXmlRecipeList());
            treeViewRcpList.Items.Clear();
            CreateTreeViewItems(doc.DocumentElement, this.treeViewRcpList);
        }

        /// <summary>
        /// Get recipe list in xml format
        /// </summary>
        /// <returns></returns>
        public string GetXmlRecipeList()
        {
            return m_uiRecipeManager.GetXmlRecipeList(m_chamId, true) ?? "";
        }

        void CreateTreeViewItems(XmlElement curElementNode, ItemsControl itemsControl)
        {
            foreach (XmlElement ele in curElementNode.ChildNodes)
            {
                if (ele.Name == "File")
                {
                    string fileName = ele.Attributes["Name"].Value;
                    fileName = fileName.Substring(fileName.LastIndexOf('\\') + 1);
                    TreeViewFileItem item = new TreeViewFileItem(ele.Attributes["Name"].Value);
                    item.Tag = ele.Attributes["Name"].Value;
                    item.ToolTip = fileName;
                    itemsControl.Items.Add(item);
                }
                else if (ele.Name == "Folder")
                {
                    string folderName = ele.Attributes["Name"].Value;
                    folderName = folderName.Substring(folderName.LastIndexOf('\\') + 1);
                    TreeViewFolderItem item = new TreeViewFolderItem(folderName);
                    item.Tag = ele.Attributes["Name"].Value;
                    CreateTreeViewItems(ele, item);
                    item.IsExpanded = false;
                    itemsControl.Items.Add(item);
                }
            }
        }

        void SelectRecipe(string recipeName)
        {
            try
            {
                string[] paths = recipeName.Split(new char[] { '\\' }, StringSplitOptions.RemoveEmptyEntries);
                string fileName = "";
                for (int i = 0; i < paths.Length - 1; i++)
                    fileName += paths[i] + "\\";
                fileName += paths[paths.Length - 1];
                selectRecipe(treeViewRcpList, paths, 0, fileName);
            }
            catch (Exception ex)
            {
                //LOG.Write(ex);
            }
        }

        ItemsControl selectRecipe(ItemsControl currentNode, string[] paths, int index, string fileName)
        {
            if (currentNode == null)
                return null;
            if (index == paths.Length - 1)
            {
                foreach (var item in currentNode.Items)
                {
                    TreeViewFileItem tvf = item as TreeViewFileItem;
                    if (tvf != null && tvf.FileName == fileName)
                    {
                        tvf.IsSelected = true;
                        return null;
                    }
                }
            }
            foreach (var item in currentNode.Items)
            {
                TreeViewFolderItem tvf = item as TreeViewFolderItem;
                if (tvf != null && tvf.FolderName == paths[index])
                {
                    tvf.IsExpanded = true;
                    selectRecipe(tvf, paths, index + 1, fileName);
                    break;
                }
            }
            return null;
        }
        #endregion
    }
}