using System.Reflection;

namespace labelUtility
{


#if UNITY_EDITOR
    using System;
    using System.Collections;
    using System.Collections.Generic;
    using System.IO;
    using System.Linq;
    using System.Text;
    using System.Text.RegularExpressions;
    using System.Xml;
    using UnityEditor;
    using UnityEngine;
    using UnityEngine.UI;

    [Serializable]
    public class RegistTarget
    {
        public string Name;
        public bool Force;
        public bool Ignore;
        //public bool CustomName;
        public bool CustomEvent = true;
        public Transform Transform;
        public ComponentType Type;
    }

    [Serializable]
    public class ComponentEventString
    {
        public ComponentType ComponentType;
        public List<string> RegistStrings;
        public List<string> MethodNames;
    }

    [Serializable]
    public class LabelSet //todo 更新
    {
        public string Name;

        public UtilityType UtilityType;

        public string LabelScriptPath;
        public string LabelScriptName;
        public string LabePrefix = "public static string";
        public TextAsset LabelScript;

        public string ComponentScriptPath;
        public string ComponentScriptName;
        public string DerivedString;
        public string RegistMethodString;
        public string ComponentPrefix = "private";
        public string NameExcludeString;
        public string RegistString;
        public List<string> RegistExtraLines;
        public TextAsset ComponentScript;

        public List<TextAsset> Languages; //todo 需要更新为LanguageXml
        public List<GameObject> Prefabs;

        public bool FoldOut;
        public float TotalHeight;
        public List<ComponentType> RegistTypes = new List<ComponentType>();
        public List<RegistTarget> RegistTargets = new List<RegistTarget>();
    }

    [Serializable]
    public enum ComponentType //todo 更新
    {
        None,
        Text,
        Slider,
        Image,
        Button,
        InputField,
        Transform,
        CanvasGroup,
        RectTransform,
        SpriteRenderer,
        VirtualScrollRectPlus,
    }

    public enum UtilityType
    {
        XmlLabel,
        PrefabLabel,
        Regist,
    }

    public class LabelUtility : MonoBehaviour
    {
        #region Config

        public List<string> DllNames;
        public List<ComponentEventString> EventStrings;
        public List<LabelSet> LabelSets;

        public static string StartMark = "//StartMark-Used by LabelUtility-Do not remove"; //todo 更新
        public static string EndMark = "//EndMark-Used by LabelUtility-Do not remove"; //todo 更新
        public static string RegistStartMark = "//RegistStartMark-Used by LabelUtility-Do not remove"; //todo 更新
        public static string RegistEndMark = "//RegistEndMark-Used by LabelUtility-Do not remove"; //todo 更新
        public static string EventStartMark = "//EventStartMark-Used by LabelUtility-Do not remove"; //todo 更新
        public static string EventEndMark = "//EventEndMark-Used by LabelUtility-Do not remove"; //todo 更新
        public static string RegistEventStartMark = "//RegistEventStartMark-Used by LabelUtility-Do not remove"; //todo 更新
        public static string RegistEventEndMark = "//RegistEventEndMark-Used by LabelUtility-Do not remove"; //todo 更新
        public static string Prefix = "public static string ";

        #endregion

        public static void CreateLabelScript(LabelSet labelSet, bool showWarning = true, bool auto = false)
        {
            if (showWarning)
            {
                if (!EditorUtility.DisplayDialog("注意", "新建LabelScript?", "确定", "取消"))
                {
                    return;
                }
            }

            if (!auto)
            {
                auto = EditorUtility.DisplayDialog("提示", "是否自动提取标签", "确定", "取消");
            }

            string scriptContent = "";
            foreach (var dllName in InstanceManager.SearchInstance<LabelUtility>().DllNames)
            {
                scriptContent += $"using {dllName};\r\n";
            }
            scriptContent += "\r\n";
            scriptContent += $"public class {labelSet.LabelScriptName}";
            scriptContent += "\r\n";
            scriptContent += $"{{\r\n\t#region Config\r\n\r\n\t{StartMark}\r\n\t{EndMark}\r\n\r\n\t#endregion\r\n}}";

            labelSet.LabelScript = CreateScript(labelSet.LabelScriptName, labelSet.LabelScriptPath, scriptContent);

            if (auto)
            {
                if (labelSet.UtilityType == UtilityType.XmlLabel)
                {
                    CreateLabelFromLanguageXml(labelSet, false);
                }
                else if (labelSet.UtilityType == UtilityType.Regist || labelSet.UtilityType == UtilityType.PrefabLabel)
                {
                    CreateLabelFromPrefab(labelSet, false);
                }
            }
        }

        public static void CreateComponentScript(LabelSet labelSet, bool showWarning = true, bool regist = false)
        {
            if (showWarning)
            {
                if (!EditorUtility.DisplayDialog("注意", "新建ComponentScript?", "确定", "取消"))
                {
                    return;
                }
            }

            if (!regist)
            {
                regist = EditorUtility.DisplayDialog("提示", "是否自动注册", "确定", "取消");
            }

            string scriptContent = "";
            foreach (var dllName in InstanceManager.SearchInstance<LabelUtility>().DllNames)
            {
                scriptContent += $"using {dllName};\r\n";
            }
            scriptContent += "\r\n";
            scriptContent += $"public class {labelSet.ComponentScriptName}";
            if (string.IsNullOrEmpty(labelSet.DerivedString))
            {
                scriptContent += "\r\n";
            }
            else
            {
                scriptContent += $" : {labelSet.DerivedString}\r\n";
            }
            scriptContent += $"{{\r\n\t#region Config\r\n\r\n\t{StartMark}\r\n\t{EndMark}\r\n\r\n\t#endregion\r\n";
            scriptContent += "\r\n";
            if (!string.IsNullOrEmpty(labelSet.RegistMethodString))
            {
                scriptContent += $"\t{labelSet.RegistMethodString}\r\n\t{{\r\n";
                scriptContent += $"\t\t{RegistStartMark}\r\n";
                scriptContent += $"\t\t{RegistEndMark}\r\n";
                scriptContent += $"\t\t{RegistEventStartMark}\r\n";
                scriptContent += $"\t\t{RegistEventEndMark}\r\n";
                scriptContent += $"\t}}\r\n";
            }

            scriptContent += "\r\n";
            scriptContent += $"\t{EventStartMark}\r\n";
            scriptContent += $"\t{EventEndMark}\r\n";

            scriptContent += $"}}";

            labelSet.ComponentScript = CreateScript(labelSet.ComponentScriptName, labelSet.ComponentScriptPath, scriptContent);

            if (regist)
            {
                CreateComponentsFromPrefab(labelSet, false);
            }
        }

        private static TextAsset CreateScript(string scriptName, string scriptPath, string content)
        {
            string directory = scriptPath.TrimEnd('/', '\\') + "/";

            if (directory.Length < 6 || directory.Substring(0, 6).ToLower() != "assets")
            {
                throw new Exception("ScripPath必须位置Assets目录内");
            }

            if (!Directory.Exists(directory))
            {
                throw new Exception("文件夹不存在");
            }

            if (string.IsNullOrEmpty(scriptName) || scriptName.Any(Path.GetInvalidFileNameChars().Contains))
            {
                throw new Exception("ScripName包含无效字符");
            }

            string fullPath = $"{scriptPath}/{scriptName}.cs";
            if (File.Exists(fullPath))
            {
                throw new Exception($"已经存在一个 {fullPath}");
            }

            File.WriteAllText(fullPath, content);
            AssetDatabase.Refresh();
            return AssetDatabase.LoadAssetAtPath<TextAsset>(fullPath);
        }


        public static void CreateLabelFromPrefab(LabelSet labelSet, bool showWarning = true, bool regist = false) //todo 更新
        {
            if (labelSet.LabelScript == null)
            {
                Debug.LogError("LabelScript is null");
                return;
            }

            if (showWarning)
            {
                if (!EditorUtility.DisplayDialog("注意", "重新生成Prefab Label?", "确定", "取消"))
                {
                    return;
                }
            }

            if (!regist)
            {
                regist = EditorUtility.DisplayDialog("提示", "是否自动注册", "确定", "取消");
            }

            List<string> labels = new List<string>();
            List<Transform> transforms = GetAllTransformFromPrefab(labelSet.Prefabs);
            foreach (var transform in transforms)
            {
                labels.Add($"{labelSet.LabePrefix} {transform.name} = \"{transform.name}\";");
            }
            InsertLineToScript(StartMark, EndMark, labelSet.LabelScript, labels);

            if (regist)
            {
                CreateComponentsFromPrefab(labelSet, false);
            }
        }

        public static void CreateLabelFromLanguageXml(LabelSet labelSet, bool showWarning = true) //todo 更新
        {
            if (labelSet.LabelScript == null)
            {
                Debug.LogError("LabelScript is null");
                return;
            }

            if (showWarning)
            {
                if (!EditorUtility.DisplayDialog("注意", "重新生成LanguageXml Label?", "确定", "取消"))
                {
                    return;
                }
            }

            List<string> labels = new List<string>();
            foreach (var language in labelSet.Languages)
            {
                XmlDocument document = new XmlDocument();
                document.LoadXml(language.text);
                XmlNodeList childNodes = document.SelectSingleNode("lan").ChildNodes;
                for (int i = 0; i < childNodes.Count; i++)
                {
                    labels.AddRange(GetAllLabelFromXmlNode(childNodes[i], labelSet));
                }
            }

            InsertLineToScript(StartMark, EndMark, labelSet.LabelScript, labels);
        }

        private static List<string> GetAllLabelFromXmlNode(XmlNode node, LabelSet labelSet) //todo 增加
        {
            List<string> labels = new List<string>();
            for (int i = 0; i < node.ChildNodes.Count; i++)
            {
                XmlNode childNode = node.ChildNodes[i];
                string label;
                if (i == 0)
                {
                    label = $"\t{labelSet.LabePrefix} {node.Name} = \"{node.Name}\";";
                    labels.Add(label);
                }
                label = $"\t{labelSet.LabePrefix} {node.Name}{LanguageLabel.LanguagePageSeperator}{childNode.Name} = \"{node.Name}{LanguageLabel.LanguagePageSeperator}{childNode.Name}\";";
                labels.Add(label);
            }
            return labels;
        }


        public static Type GetType(ComponentType componentType)
        {
            Assembly assembly = Assembly.Load("UnityEngine.UI");
            Type type = assembly.GetType($"UnityEngine.UI.{componentType}");
            if (type == null)
            {
                assembly = Assembly.Load("UnityEngine");
                type = assembly.GetType($"UnityEngine.{componentType}");
            }
            if (type == null)
            {
                assembly = Assembly.Load("Assembly-CSharp");
                type = assembly.GetType($"{componentType}");
            }
            return type;
        }


        public static void CreateComponentsFromPrefab(LabelSet labelSet, bool showWarning = true)  //todo 更新
        {
            if (labelSet.ComponentScript == null)
            {
                Debug.LogError("ComponentScript is null");
                return;
            }

            if (showWarning)
            {
                if (!EditorUtility.DisplayDialog("注意", "重新生成PrefabComponent?", "确定", "取消"))
                {
                    return;
                }
            }

            List<string> defineStrings = new List<string>();
            List<string> registStrings = new List<string>();
            List<string> eventNames = new List<string>();
            List<string> registEventStrings = new List<string>();
            registStrings.AddRange(labelSet.RegistExtraLines);
            foreach (var registTarget in labelSet.RegistTargets)
            {
                if (registTarget.Ignore) continue;
                defineStrings.Add($"{labelSet.ComponentPrefix} {registTarget.Type} {registTarget.Transform.name};");
                string registString = labelSet.RegistString.Replace("#NAME", registTarget.Transform.name).Replace("#TYPE", registTarget.Type.ToString()).Replace("#NEWNAME", registTarget.Name);
                if (labelSet.LabelScript != null)
                {
                    registString = registString.Replace("#LABEL", labelSet.LabelScript.name);
                }
                registStrings.Add(registString);

                foreach (var eventString in InstanceManager.SearchInstance<LabelUtility>().EventStrings)
                {
                    if (eventString.ComponentType == registTarget.Type)
                    {
                        if (!registTarget.CustomEvent)
                        {
                            continue;
                        }
                        for (int i = 0; i < eventString.MethodNames.Count; i++)
                        {
                            eventNames.Add($"{eventString.MethodNames[i].Replace("#NEWNAME", registTarget.Name).Replace("#NAME", registTarget.Transform.name)}");
                        }
                        for (int i = 0; i < eventString.RegistStrings.Count; i++)
                        {
                            registEventStrings.Add($"{eventString.RegistStrings[i].Replace("#NEWNAME", registTarget.Name).Replace("#NAME", registTarget.Transform.name)};");
                        }
                    }
                }
            }

            //foreach (var eventString in eventStrings)
            //{
            //    Debug.Log(eventString);
            //}

            int? startIndex = null;
            int? endIndex = null;
            List<string> oldEventMethods = GetScriptContentBetweenMarks(EventStartMark, EventEndMark, labelSet.ComponentScript, ref startIndex, ref endIndex);
            List<string> newEventMethods = new List<string>();
            int? tabAmount = GetMarkSpaceAmount(labelSet.ComponentScript, EventStartMark);
            for (int i = 0; i < eventNames.Count; i++)
            {
                List<string> methodStrings = TryGetMethodStrings(eventNames[i], oldEventMethods);
                if (methodStrings.Valid())
                {
                    for (int j = 0; j < methodStrings.Count; j++)
                    {
                        if (tabAmount == null)
                        {
                            newEventMethods.Add(methodStrings[j]);
                        }
                        else
                        {
                            //Debug.Log((int)methodStrings[j][0]);
                            //Debug.Log((int)methodStrings[j][1]);
                            //Debug.LogWarning(methodStrings[j]);
                            //Debug.Log(methodStrings[j].Length);
                            string str = methodStrings[j].Length > 0 ? methodStrings[j].Substring(tabAmount.Value) : methodStrings[j];
                            newEventMethods.Add(str);
                        }
                    }
                    if (i < eventNames.Count - 1)
                    {
                        newEventMethods.Add("");
                    }
                }
                else
                {
                    newEventMethods.Add($"{labelSet.ComponentPrefix} {eventNames[i]}");
                    newEventMethods.Add("{\r\n");
                    newEventMethods.Add(i < eventNames.Count - 1 ? "}\r\n" : "}");
                }
            }

            InsertLineToScript(StartMark, EndMark, labelSet.ComponentScript, defineStrings);
            InsertLineToScript(RegistStartMark, RegistEndMark, labelSet.ComponentScript, registStrings);
            InsertLineToScript(RegistEventStartMark, RegistEventEndMark, labelSet.ComponentScript, registEventStrings);
            InsertLineToScript(EventStartMark, EventEndMark, labelSet.ComponentScript, newEventMethods);

            //foreach (var registEventString in registEventStrings)
            //{
            //    Debug.Log(registEventString);
            //}

            //List <string> typeNames = new List<string>();
            //foreach (var purview in labelSet.RegistTypes)
            //{
            //    typeNames.Add(purview.ToString());
            //}
            //List <Transform> transforms = GetAllTransformFromPrefab(labelSet.Prefabs);
            //Dictionary<string, List<string>> namesDictionary = new Dictionary<string, List<string>>();
            //foreach (var name in typeNames)
            //{
            //    namesDictionary.Add(name, new List<string>());
            //}
            //foreach (var kv in namesDictionary)
            //{
            //    Assembly assembly = Assembly.Load("UnityEngine.UI");
            //    Type type = assembly.GetType($"UnityEngine.UI.{kv.Key}");
            //    if (type == null)
            //    {
            //        assembly = Assembly.Load("UnityEngine");
            //        type = assembly.GetType($"UnityEngine.{kv.Key}");
            //    }
            //    if (type == null)
            //    {
            //        assembly = Assembly.Load("Assembly-CSharp");
            //        type = assembly.GetType($"{kv.Key}");
            //    }
            //    foreach (var transform in transforms)
            //    {
            //        if (transform.GetComponent(type) == null) continue;
            //        namesDictionary[kv.Key].Add(transform.name);
            //    }
            //}
            //List<string> names = new List<string>();
            //List<string> components = new List<string>();
            //List<string> registStrings = new List<string>();
            //registStrings.AddRange(labelSet.RegistExtraLines);
            //foreach (var kv in namesDictionary)
            //{
            //    foreach (var name in kv.Value)
            //    {
            //        names.Add(name);
            //        string newName = string.IsNullOrEmpty(labelSet.NameExcludeString) ? name : name.Replace(labelSet.NameExcludeString, "");
            //        components.Add($"{labelSet.ComponentPrefix} {kv.Key} {newName};");
            //        string registString = labelSet.RegistString.Replace("#NAME", name).Replace("#TYPE", kv.Key).Replace("#NEWNAME", newName);
            //        if (labelSet.LabelScript != null)
            //        {
            //            registString = registString.Replace("#LABEL", labelSet.LabelScript.name);
            //        }
            //        registStrings.Add(registString);
            //    }
            //}
            //InsertLineToScript(StartMark, EndMark, labelSet.ComponentScript, components);
            //InsertLineToScript(RegistStartMark, RegistEndMark, labelSet.ComponentScript, registStrings);
        }

        private static List<string> TryGetMethodStrings(string methodName, List<string> strings)
        {
            List<string> results = new List<string>();
            for (int i = 0; i < strings.Count; i++)
            {
                if (!strings[i].Contains(methodName)) continue;
                for (int j = i; j < strings.Count; j++)
                {
                    results.Add(strings[j]);
                    if (strings[j].Trim() == "}")
                    {
                        return results;
                    }
                }
            }
            return results;
        }

        private static void InsertLineToScript(int startIndex, TextAsset textAsset, List<string> insertLines)
        {
            List<string> strings = GetScriptContents(textAsset);
            int prefixIndex = strings[startIndex].IndexOf("//");
            string prefix = strings[startIndex].Substring(0, prefixIndex);
            for (int i = 0; i < insertLines.Count; i++)
            {
                strings.Insert(startIndex, prefix + insertLines[i]);
                startIndex++;
            }
            StringBuilder stringBuilder = new StringBuilder();
            for (int i = 0; i < strings.Count; i++)
            {
                stringBuilder.AppendLine(strings[i]);
            }
            string content = stringBuilder.ToString();
            content = content.Substring(0, content.Length - 2);
            File.WriteAllText(AssetDatabase.GetAssetPath(textAsset), content);
            AssetDatabase.Refresh();
        }

        private static void InsertLineToScript(string startMark, string endMark, TextAsset textAsset, List<string> insertLines)
        {
            int? startMarkLineIndex = null;
            int? endMarkLineIndex = null;
            List<string> strings = GetScriptContentAfterClearMarks(startMark, endMark, textAsset, ref startMarkLineIndex, ref endMarkLineIndex);
            int prefixIndex = strings[startMarkLineIndex.Value].IndexOf("//");
            string prefix = strings[startMarkLineIndex.Value].Substring(0, prefixIndex);
            for (int i = 0; i < insertLines.Count; i++)
            {
                strings.Insert(startMarkLineIndex.Value + 1, prefix + insertLines[i]);
                startMarkLineIndex++;
            }
            StringBuilder stringBuilder = new StringBuilder();
            for (int i = 0; i < strings.Count; i++)
            {
                stringBuilder.AppendLine(strings[i]);
            }
            string content = stringBuilder.ToString();
            content = content.Substring(0, content.Length - 2);
            File.WriteAllText(AssetDatabase.GetAssetPath(textAsset), content);
            AssetDatabase.Refresh();
        }

        private static int? GetMarkIndex(TextAsset textAsset, string mark)
        {
            List<string> strings = textAsset.text.Split(new[] { "\r\n" }, StringSplitOptions.None).ToList();
            for (int i = 0; i < strings.Count; i++)
            {
                if (strings[i].Contains(mark))
                {
                    return i;
                }
            }
            return null;
        }

        private static int? GetMarkSpaceAmount(TextAsset textAsset, string mark)
        {
            List<string> strings = textAsset.text.Split(new[] { "\r\n" }, StringSplitOptions.None).ToList();
            for (int i = 0; i < strings.Count; i++)
            {
                if (strings[i].Contains(mark))
                {
                    if (Regex.Match(strings[i], "^\\s+").Success)
                    {
                        //Debug.Log(Regex.Match(strings[i], "^\\s+").Length);
                        return Regex.Match(strings[i], "^\\s+").Length;
                    }
                    else
                    {
                        return null;
                    }
                }
            }
            return null;
        }

        private static List<string> GetScriptContentBetweenMarks(string startMark, string endMark, TextAsset textAsset, ref int? startMarkLineIndex, ref int? endMarkLineIndex)
        {
            //Debug.Log(textAsset.text);
            List<string> strings = textAsset.text.Split(new[] { "\r\n" }, StringSplitOptions.None).ToList();
            for (int i = 0; i < strings.Count; i++)
            {
                if (strings[i].Contains(startMark))
                {
                    //Debug.Log(strings[i][0]);
                    //Debug.LogWarning(strings[i][1]);
                    //Debug.Log(strings[i][2]);
                    //Debug.LogWarning(strings[i][3]);
                    //Debug.Log(strings[i][4]);
                    //Debug.LogWarning(strings[i][5]);

                    startMarkLineIndex = i;
                }
                else if (strings[i].Contains(endMark))
                {
                    endMarkLineIndex = i;
                }
            }

            List<string> results = new List<string>();
            for (int i = startMarkLineIndex.Value + 1; i < endMarkLineIndex.Value; i++)
            {
                //if (strings[i].Length > 0)
                //{
                //    Debug.Log(strings[i][0]);
                //}
                //if (strings[i].Length > 1)
                //{
                //    Debug.LogWarning(strings[i][1]);
                //}
                results.Add(strings[i]);
            }
            return results;
        }

        private static List<string> GetScriptContents(TextAsset textAsset)
        {
            List<string> strings = textAsset.text.Split(new[] { "\r\n" }, StringSplitOptions.None).ToList();
            return strings;
        }

        private static List<string> GetScriptContentAfterClearMarks(string startMark, string endMark, TextAsset textAsset, ref int? startMarkLineIndex, ref int? endMarkLineIndex)
        {
            List<string> strings = textAsset.text.Split(new[] {"\r\n"}, StringSplitOptions.None).ToList();
            //List<string> currentDefinedNames = new List<string>();
            for (int i = 0; i < strings.Count; i++)
            {
                if (strings[i].Contains(startMark))
                {
                    startMarkLineIndex = i;
                }
                else if (strings[i].Contains(endMark))
                {
                    endMarkLineIndex = i;
                }

                //if (startMarkLineIndex != null)
                //{
                //    if (endMarkLineIndex != null)
                //    {
                //        if (i > startMarkLineIndex.Value && i < endMarkLineIndex.Value)
                //        {
                //            currentDefinedNames.Add(GetDefinedName(strings[i]));
                //        }
                //    }
                //    else
                //    {
                //        if (i > startMarkLineIndex.Value)
                //        {
                //            currentDefinedNames.Add(GetDefinedName(strings[i]));
                //        }
                //    }
                //}
            }
            int definedCount = endMarkLineIndex.Value - startMarkLineIndex.Value - 1;
            for (int i = 0; i < definedCount; i++)
            {
                strings.RemoveAt(startMarkLineIndex.Value + 1);
            }
            return strings;
        }

        private static List<Transform> GetAllTransformFromPrefab(List<GameObject> prefabs)
        {
            List<Transform> transforms = new List<Transform>();
            for (int i = 0; i < prefabs.Count; i++)
            {
                transforms.AddRange(prefabs[i].GetComponentsInChildren<Transform>(true));
            }
            return transforms;
        }
    }
#endif


}