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 LabelSet
{
    public string Name;

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

    public string ComponentScriptPath;
    public string ComponentScriptName;
    public string ComponentPrefix = "private";
    public TextAsset ComponentScript;

    public List<TextAsset> Languages;
    public List<GameObject> Prefabs;

    public bool FoldOut;
    public float TotalHeight;
    public List<ComponentPurview> ComponentPurviews = new List<ComponentPurview>();
}

public enum ComponentPurview
{
    Text,
    Button,
    Transform,
    RectTransform,
    SpriteRenderer,
}

public class LabelUtility : MonoBehaviour
{
    #region Config

    public List<LabelSet> LabelSets;

    public static string StartMark = "//StartMarkMark-LabelUtility使用-勿删";
    public static string EndMark = "//EndMarkMark-LabelUtility使用-勿删";
    public static string Prefix = "public static string ";
    public static string LanguagePageSeperator = "__";

    #endregion

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

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

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

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

    private static TextAsset CreateScript(string scriptName, string scriptPath)
    {
        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}");
        }

        string scriptContent = $"public class {scriptName}\r\n{{\r\n\t#region Config\r\n\r\n\t{StartMark}\r\n\t{EndMark}\r\n\r\n\t#endregion\r\n}}";
        File.WriteAllText(fullPath, scriptContent);
        AssetDatabase.Refresh();
        return AssetDatabase.LoadAssetAtPath<TextAsset>(fullPath);
    }


    public static void CreateLabelFromPrefab(LabelSet labelSet)
    {
        if (!EditorUtility.DisplayDialog("注意", "重新生成PrefabLabel?", "确定", "取消"))
        {
            return;
        }
        
        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(labelSet.LabelScript, labels);
    }

    public static void CreateComponentsFromPrefab(LabelSet labelSet)
    {
        if (!EditorUtility.DisplayDialog("注意", "重新生成PrefabComponent?", "确定", "取消"))
        {
            return;
        }

        List<string> textNames = new List<string>();
        List<string> buttonNames = new List<string>();
        List<string> transformNames = new List<string>();
        List<string> rectTransformNames = new List<string>();
        List<string> spriteRendererNames = new List<string>();
        List<Transform> transforms = GetAllTransformFromPrefab(labelSet.Prefabs);
        foreach (var transform in transforms)
        {
            if (labelSet.ComponentPurviews.Contains(ComponentPurview.Text) && transform.GetComponent<Text>() != null)
            {
                textNames.Add($"{labelSet.ComponentPrefix} Text {transform.name};");
            }
            if (labelSet.ComponentPurviews.Contains(ComponentPurview.Button) && transform.GetComponent<Button>() != null)
            {
                buttonNames.Add($"{labelSet.ComponentPrefix} Button {transform.name};");
            }
            if (labelSet.ComponentPurviews.Contains(ComponentPurview.Transform) && transform.GetComponent<Transform>() != null)
            {
                transformNames.Add($"{labelSet.ComponentPrefix} Transform {transform.name};");
            }
            if (labelSet.ComponentPurviews.Contains(ComponentPurview.RectTransform) && transform.GetComponent<RectTransform>() != null)
            {
                rectTransformNames.Add($"{labelSet.ComponentPrefix} RectTransform {transform.name};");
            }
            if (labelSet.ComponentPurviews.Contains(ComponentPurview.SpriteRenderer) && transform.GetComponent<SpriteRenderer>() != null)
            {
                spriteRendererNames.Add($"{labelSet.ComponentPrefix} SpriteRenderer {transform.name};");
            }
        }
        List<string> components = new List<string>();
        components.AddRange(textNames);
        components.AddRange(buttonNames);
        components.AddRange(transformNames);
        components.AddRange(rectTransformNames);
        components.AddRange(spriteRendererNames);
        InsertLineToScript(labelSet.ComponentScript, components);
    }

    private static void InsertLineToScript(TextAsset textAsset, List<string> insertLines)
    {
        int? startMarkLineIndex = null;
        int? endMarkLineIndex = null;
        List<string> strings = GetScriptContentAfterClearMarks(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 List<string> GetScriptContentAfterClearMarks(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;
    }
}

/*To be delete
    //private static string GetDefinedName(string str)
    //{
    //    return Regex.Match(str, "(?<=string)[^=]+(?=\\=)").Value.Trim();
    //}
*/
#endif


}