using ICSharpCode.AvalonEdit.CodeCompletion;
using ICSharpCode.AvalonEdit.Document;
using ICSharpCode.AvalonEdit.Editing;
using ICSharpCode.AvalonEdit.Folding;
using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Threading;
using TeamAAS_VP.Core;
using TeamAAS_VP.Models;
using TeamAAS_VP.ViewModels.DebugMod;
using Prism.Commands;
using TeamAAS_VP;
using TeamAAS_VP.Resources.Languages;

namespace TeamAAS_VP.Controls
{
    /// <summary>
    /// ScriptEditControl.xaml 的交互逻辑
    /// </summary>
    public partial class ScriptEditControl : UserControl
    {
        /// <summary>
        /// 当前app的所有程序集中的类
        /// </summary>
        Dictionary<string, Type> ClassMemberlist = new Dictionary<string, Type>();
        #region 属性
        private double _fontSize = 14;
        public new double FontSize
        {
            get { return _fontSize; }
            set { _fontSize = value;
                this.textEditor.FontSize = value;
            }
        }

        private TextDocument _document = new TextDocument();
        public TextDocument Document
        {
            get { return _document; }
            set { _document = value;
            }
        }

        private TextArea _mTextArea;

        public TextArea mTextArea
        {
            get { return _mTextArea; }
            set { _mTextArea = value; }
        }


        private ObservableCollection<ScriptCompileMessage> _CompileMessageList = new ObservableCollection<ScriptCompileMessage>();

        public ObservableCollection<ScriptCompileMessage> CompileMessageList
        {
            get { return _CompileMessageList; }
            set {
                _CompileMessageList = value;
                this.messagelist.ItemsSource = value;

                    }
        }

        private bool _IsCompile = true;

        public bool IsCompile
        {
            get { return _IsCompile; }
            set { _IsCompile = value;
                this.Dispatcher.Invoke(new Action(() => { 
                    this.btn1.IsEnabled = value;
                    this.btn2.IsEnabled = value;
                    this.btn3.IsEnabled = value;
                    this.btn4.IsEnabled = value;
                    this.btn5.IsEnabled = value;
                    this.btn6.IsEnabled = value;
                    this.btn7.IsEnabled = value;
                    this.btn8.IsEnabled = value;
                    this.btn9.IsEnabled = value;
                    this.btn10.IsEnabled = value;
                    this.btn11.IsEnabled = value;
                    this.btn12.IsEnabled = value;
                    this.btnShowEndOfLine.IsEnabled= value;
                    this.btnShowLineNumbers.IsEnabled= value;
                    this.btnWordWrap.IsEnabled= value;
                    this.textEditor.IsEnabled= value;
                }));
            }
        }


        [Bindable(true)]
        [Category("Common")]
        [DefaultValue("")]
        public string Text
        {
            get { return (string)GetValue(TextProperty); }
            set { SetValue(TextProperty, value); 
            }
        }

        // Using a DependencyProperty as the backing store for Text.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty TextProperty =
            DependencyProperty.Register("Text", typeof(string), typeof(ScriptEditControl), new PropertyMetadata(default(string),new PropertyChangedCallback(OnValueChanged)));
        
        private static void OnValueChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if (d is ScriptEditControl control)
            {
                if (e.NewValue!=e.OldValue)
                {
                    if (!control.isWrite)
                    {
                        control.textEditor.Document.Text = (string)e.NewValue;
                    }
                    
                }
            }
        }


        [Bindable(true)]
        [Category("Common")]
        [DefaultValue("")]
        public string ScriptPath
        {
            get { return (string)GetValue(ScriptPathProperty); }
            set { SetValue(ScriptPathProperty, value); }
        }

        // Using a DependencyProperty as the backing store for ScriptPath.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty ScriptPathProperty =
            DependencyProperty.Register("ScriptPath", typeof(string), typeof(ScriptEditControl), new PropertyMetadata(default(string), new PropertyChangedCallback(OnPathChanged)));

        private static void OnPathChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if (d is ScriptEditControl control)
            {
                if (e.NewValue != e.OldValue)
                {
                    
                }
            }
        }

        [Bindable(true)]
        [Category("Common")]
        [DefaultValue("")]
        public string CompileType
        {
            get { return (string)GetValue(CompileTypeProperty); }
            set { SetValue(CompileTypeProperty, value); }
        }

        // Using a DependencyProperty as the backing store for CompileType.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty CompileTypeProperty =
            DependencyProperty.Register("CompileType", typeof(string), typeof(ScriptEditControl), new PropertyMetadata(default(string)));

        #endregion

        #region 命令

        #endregion

        #region 事件
        public static readonly RoutedEvent SaveScriptEvent=EventManager.RegisterRoutedEvent("OnSaveScript", RoutingStrategy.Bubble,typeof(RoutedEventHandler),typeof(ScriptEditControl));
        public event RoutedEventHandler OnSaveScript
        {
            add { AddHandler(SaveScriptEvent, value);}
            remove { RemoveHandler(SaveScriptEvent, value);}
        }
        #endregion

        public ScriptEditControl()
        {
            InitializeComponent();
            this.Loaded += ScriptEditControl_Loaded;
            this.textEditor.PreviewMouseWheel += TextEditor_PreviewMouseWheel;
            this.messagelist.SelectionChanged += Messagelist_SelectionChanged;
            this.textEditor.Document = Document;
            this.textEditor.Document.TextChanged += Document_TextChanged;
            this.messagelist.ItemsSource= new ObservableCollection<ScriptCompileMessage>();
        }

        bool isWrite = false;
        private void Document_TextChanged(object sender, EventArgs e)
        {
            isWrite = true;
            Text = this.textEditor.Document.Text;
            isWrite = false;
        }

        #region 方法
        bool isFirst=true;
        private async void ScriptEditControl_Loaded(object sender, RoutedEventArgs e)
        {
            if (isFirst)
            {
                textEditor.Options.HighlightCurrentLine = true;
                mTextArea = textEditor.TextArea;
                textEditor.TextArea.TextEntering += TextArea_TextEntering;
                textEditor.TextArea.TextEntered += TextArea_TextEntered;
                //textEditor.PreviewMouseWheel += vm.TextEditor_PreviewMouseWheel;
                ICSharpCode.AvalonEdit.Search.SearchPanel.Install(textEditor);
                foldingManager = FoldingManager.Install(textEditor.TextArea);
                foldingStrategy = new BraceFoldingStrategy();
                DispatcherTimer foldingUpdateTimer = new DispatcherTimer();
                foldingUpdateTimer.Interval = TimeSpan.FromSeconds(2);
                foldingUpdateTimer.Tick += delegate { UpdateFoldings(); };
                foldingUpdateTimer.Start();
                await Task.Run(() =>
                {
                    try
                    {
                        var cc = GetTypesInNamespace(Assembly.GetExecutingAssembly(), "TeamAAS_VP");
                        foreach (var item in GetTypesInNamespace(Assembly.GetExecutingAssembly(), "TeamAAS_VP"))
                        {
                            if (!item.IsPublic)
                            {
                                continue;
                            }
                            ClassMemberlist.Add(item.Name, item);
                        }
                        //获取当前应用域中加载的所有程序集数组
                        Assembly[] assemblies = AppDomain.CurrentDomain.GetAssemblies();
                        foreach (var item in assemblies)
                        {
                            try
                            {
                                foreach (var item1 in GetTypesInNamespace(Assembly.Load(item.FullName)))
                                {
                                    if (!item1.IsPublic)
                                    {
                                        continue;
                                    }
                                    ClassMemberlist.Add(item1.Name, item1);
                                }
                            }
                            catch (Exception)
                            {
                            }

                        }
                    }
                    catch (Exception)
                    {
                    }
                });
                isFirst = false;
            }
        }

        /// <summary>
        /// 打开脚本文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                OpenFileDialog dlg = new OpenFileDialog();
                dlg.Title = Lang.打开脚本;
                dlg.Filter = $"{Lang.脚本文件}|*.cs|{Lang.所有文件}.*|*.*";
                dlg.CheckFileExists = true;
                if (dlg.ShowDialog() ?? false)
                {
                    this.textEditor.Document.Text = FileHelper.ReadFile(dlg.FileName);
                }
            }
            catch (Exception)
            {

            }
        }

        /// <summary>
        /// 保存脚本
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            try
            {
                if (string.IsNullOrEmpty(ScriptPath))
                {
                    return;
                }
                FileHelper.WriteFile(this.textEditor.Document.Text, ScriptPath);
                RoutedEventArgs args = new RoutedEventArgs(ScriptEditControl.SaveScriptEvent, Text);
                RaiseEvent(args);
                MessageBox.Show("Succed!");
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogError(Lang.保存脚本文件时出错,ex);
                MessageBox.Show(ex.Message);
            }
        }

        /// <summary>
        /// 另存为
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button_Click_2(object sender, RoutedEventArgs e)
        {
            try
            {
                SaveFileDialog dlg = new SaveFileDialog();
                dlg.Title = $"{Lang.保存脚本}";
                dlg.DefaultExt = ".cs";
                dlg.Filter = $"C# {Lang.文件} (*.cs)|*.cs|{Lang.所有文件} (*.txt)|*.txt|All files (*.*)|*.*";
                if (dlg.ShowDialog() ?? false)
                {
                    FileHelper.WriteFile(this.textEditor.Document.Text, dlg.FileName);
                }
            }
            catch (Exception)
            {

            }
        }

        /// <summary>
        /// 字体放大
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button_Click_3(object sender, RoutedEventArgs e)
        {
            if (FontSize < 50)
            {
                FontSize += 1;
            }
        }

        /// <summary>
        /// 字体缩小
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button_Click_4(object sender, RoutedEventArgs e)
        {
            if (FontSize > 1)
                FontSize -= 1;
        }

        /// <summary>
        /// 编译
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private async void Button_Click_5(object sender, RoutedEventArgs e)
        {
            IsCompile = false;
            CompileMessageList.Clear();
            this.messagelist.ItemsSource = CompileMessageList;
            CompileMessageList.Add(new ScriptCompileMessage() { DT = DateTime.Now, Kind = MaterialDesignThemes.Wpf.PackIconKind.InformationSlabCircleOutline, FontColol = new SolidColorBrush(Colors.Black), Message = Lang.开始编译});
            if (!string.IsNullOrEmpty(CompileType) && CompileType== "VisionScripting")
            {
                var rst = await ScriptHelper.CompileVisionScriptingAsync(this.textEditor.Document.Text,null,null,null,null,null,null);
                if (rst.Item1)
                {
                    CompileMessageList.Add(new ScriptCompileMessage() { DT = DateTime.Now, Kind = MaterialDesignThemes.Wpf.PackIconKind.CheckCircle, FontColol = new SolidColorBrush(Colors.Green), Message = Lang.编译完成 });
                    //rst.Item3.Invoke(rst.Item4,null);
                }
                else
                {
                    foreach (var item in rst.Item2)
                    {
                        CompileMessageList.Add(new ScriptCompileMessage() { DT = DateTime.Now, Kind = MaterialDesignThemes.Wpf.PackIconKind.CloseCircle, FontColol = new SolidColorBrush(Colors.Red), Message = item });
                    }

                }
            }
            else
            {
                var rst = await ScriptHelper.CompileAsync(this.textEditor.Document.Text, null, null, null);
                if (rst.Item1)
                {
                    CompileMessageList.Add(new ScriptCompileMessage() { DT = DateTime.Now, Kind = MaterialDesignThemes.Wpf.PackIconKind.CheckCircle, FontColol = new SolidColorBrush(Colors.Green), Message = Lang.编译完成 });
                    //rst.Item3.Invoke(rst.Item4,null);
                }
                else
                {
                    foreach (var item in rst.Item2)
                    {
                        CompileMessageList.Add(new ScriptCompileMessage() { DT = DateTime.Now, Kind = MaterialDesignThemes.Wpf.PackIconKind.CloseCircle, FontColol = new SolidColorBrush(Colors.Red), Message = item });
                    }

                }
            }
            
            this.messagelist.ItemsSource = CompileMessageList;
            IsCompile = true;
        }

        CompletionWindow completionWindow;
        public void TextArea_TextEntered(object sender, System.Windows.Input.TextCompositionEventArgs e)
        {
            if (e.Text == ".")
            {
                //1.获取.前面的字符串

                // 获取当前光标位置
                int caretOffset = mTextArea.Caret.Offset;
                // 获取当前光标位置前面的单词（以空格、标点等作为分隔符）
                TextDocument document = Document;
                int startOffset = Math.Max(0, caretOffset - 1); // 从当前位置的前一个字符开始
                                                                // 找到单词的起始位置
                while (startOffset >= 0 && !char.IsWhiteSpace(document.GetCharAt(startOffset)))
                {
                    startOffset--;
                }
                startOffset++; // 回到单词的起始位置
                // 获取单词的文本
                int endOffset = caretOffset - 1;
                // 使用 AvalonEdit 提供的 TextUtilities 获取当前位置前面的单词
                string word = document.GetText(startOffset, endOffset - startOffset);

                //2.检索字符串，并得到对象
                var type = word.GetType();
                foreach (var item in ClassMemberlist)
                {
                    if (item.Key.ToLower().Trim(' ') == word.ToLower().Trim(' '))
                    {
                        type = item.Value;
                        break;
                    }
                }
                if (type == null)
                    return;
                //3.检索对象中所有的属性，字段，事件，方法，并做提示
                // open code completion after the user has pressed dot:
                completionWindow = new CompletionWindow(((ICSharpCode.AvalonEdit.Editing.TextArea)sender));
                // provide AvalonEdit with the data:
                IList<ICompletionData> data = completionWindow.CompletionList.CompletionData;

                System.Reflection.MethodInfo[] methodInfos = type.GetMethods(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Static);
                System.Reflection.PropertyInfo[] propertyInfos = type.GetProperties(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Static);            // System.Reflection.BindingFlags.Public| System.Reflection.BindingFlags.Static
                System.Reflection.EventInfo[] eventInfos = type.GetEvents(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Static);
                System.Reflection.FieldInfo[] fieldInfos = type.GetFields(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Static);
                List<String> proposals = new List<string>();
                //遍历字段
                foreach (var item in fieldInfos)
                {
                    data.Add(new ScriptCompletionData(item.Name, CoreMemberType.Field));
                }
                //遍历属性
                foreach (var item in propertyInfos)
                {
                    data.Add(new ScriptCompletionData(item.Name, CoreMemberType.Property));
                }
                //遍历方法
                foreach (var item in methodInfos)
                {
                    if (item.IsSpecialName)
                    {
                        continue;
                    }
                    if (item.ToString().Split(' ').Length >= 2)
                    {
                        data.Add(new ScriptCompletionData(item.ToString().Split(" ".ToCharArray(), 2)[1].Replace(" ", ""), CoreMemberType.Void));
                    }
                    else
                    {
                        data.Add(new ScriptCompletionData(item.Name, CoreMemberType.Void));
                    }

                }
                //遍历事件
                foreach (var item in eventInfos)
                {
                    data.Add(new ScriptCompletionData(item.Name, CoreMemberType.Event));
                }
                completionWindow.Show();
                completionWindow.Closed += delegate {
                    completionWindow = null;
                };
            }
            else if (e.Text == "(")
            {
                Document.Insert(mTextArea.Caret.Offset, ")");
                mTextArea.Caret.Offset = mTextArea.Caret.Offset - 1;
            }
            else if (e.Text == "{")
            {
                Document.Insert(mTextArea.Caret.Offset, "}");
                mTextArea.Caret.Offset = mTextArea.Caret.Offset - 1;
            }
        }

        public void TextArea_TextEntering(object sender, System.Windows.Input.TextCompositionEventArgs e)
        {
            if (e.Text.Length > 0 && completionWindow != null)
            {
                if (!char.IsLetterOrDigit(e.Text[0]))
                {
                    // Whenever a non-letter is typed while the completion window is open,
                    // insert the currently selected element.
                    completionWindow.CompletionList.RequestInsertion(e);
                }
            }
            // do not set e.Handled=true - we still want to insert the character that was typed
        }

        /// <summary>
        /// 获取指定命名空间下的所有类
        /// </summary>
        /// <param name="assembly"></param>
        /// <param name="nameSpace"></param>
        /// <returns></returns>
        private Type[] GetTypesInNamespace(Assembly assembly, string nameSpace = null)
        {
            if (nameSpace == null)
            {
                return assembly.GetTypes();
            }
            else
            {
                return assembly.GetTypes();
                //return assembly.GetTypes().Where(t => String.Equals(t.Namespace, nameSpace, StringComparison.Ordinal)).ToArray();
            }
        }

        public void TextEditor_PreviewMouseWheel(object sender, System.Windows.Input.MouseWheelEventArgs e)
        {
            // 检查是否按下了 Ctrl 键
            if ((Keyboard.Modifiers & ModifierKeys.Control) == ModifierKeys.Control)
            {
                // 根据鼠标滚轮方向调整字体大小
                if (e.Delta > 0)
                {
                    Button_Click_3(null,null);
                }
                else
                {
                    Button_Click_4(null,null);
                }

                // 禁止事件继续传播，防止影响文本编辑器的滚动
                e.Handled = true;
            }
        }

        /// <summary>
        /// 编辑输出信息选中时
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Messagelist_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            ListView listView = sender as ListView;
            ScriptCompileMessage item = listView.SelectedItem as ScriptCompileMessage;
            if (item == null)
            {
                return;
            }
            if (item.Kind != MaterialDesignThemes.Wpf.PackIconKind.CloseCircle)
            {
                return;
            }
            // 正则表达式
            string pattern = @"<script>\((\d+),(\d+)\): error (\w+): (.*)";
            // 匹配正则表达式
            Match match = Regex.Match(item.Message, pattern);
            // 如果匹配成功，提取各个部分
            if (match.Success)
            {
                string fullMatch = match.Groups[0].Value;    // 完整匹配结果
                string lineNumber = match.Groups[1].Value;   // 行号
                string charNumber = match.Groups[2].Value;   // 字符号
                string errorCode = match.Groups[3].Value;    // 错误编码
                string errorDescription = match.Groups[4].Value;  // 错误信息
                mTextArea.Caret.Line = int.Parse(lineNumber);
                mTextArea.Caret.BringCaretToView();
            }
        }
        #endregion

        #region Folding
        FoldingManager foldingManager;
        object foldingStrategy;

        void UpdateFoldings()
        {
            if (foldingStrategy is BraceFoldingStrategy)
            {
                ((BraceFoldingStrategy)foldingStrategy).UpdateFoldings(foldingManager, textEditor.Document);
            }
            if (foldingStrategy is XmlFoldingStrategy)
            {
                ((XmlFoldingStrategy)foldingStrategy).UpdateFoldings(foldingManager, textEditor.Document);
            }
        }
        #endregion
    }
}