using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using AssetBundleBrowser.AssetBundlePacker;
using UnityEditor;
using UnityEditor.VersionControl;
using UnityEngine;
using Debug = UnityEngine.Debug;

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public class FontPrunerEditor : EditorWindow
{
    [MenuItem("Tools/Font Small")]
    static void StartWindow()
    {
        EditorWindow.GetWindow<FontPrunerEditor>();
    }


    private Font fontAsset;
    private TextAsset charsList;
    private string jarAsset;
    private const int TimeOut = 100000;
    private string workingPath = string.Empty;
    private const string jar_file = "sfnttool.jar";

    void OnEnable()
    {
        var importers = PluginImporter.GetAllImporters();
        jarAsset = importers.First(t => t.assetPath.Contains(jar_file)).assetPath;
        workingPath = Directory.GetParent(jarAsset).Parent.ToString();
        Debug.Log(workingPath);
    }

    void OnGUI()
    {
        fontAsset = (Font) EditorGUILayout.ObjectField("字体", fontAsset, typeof(Font), false);
        charsList = (TextAsset) EditorGUILayout.ObjectField("字符集", charsList, typeof(TextAsset), false);

        GUILayout.Space(50);
        
        
        if (GUILayout.Button("过滤非法字符"))
        {
            var str = charsList.text;
            var newStr = Regex.Replace(str, @"\p{Cs}", "");
            Debug.Log(newStr);
            var path = EditorCommon.RelativeToAbsolutePath(AssetDatabase.GetAssetPath(charsList));
            File.Copy(path, path + ".bak",true);
            File.WriteAllText(path, newStr);
            
            AssetDatabase.ImportAsset(AssetDatabase.GetAssetPath(charsList));

            if (EditorUtility.DisplayDialog("成功", "已经成功过滤非法字符，旧文件已保存为同目录下.bak文件", "ok"))
            {
                
            }
        }

        GUILayout.Space(5);
        if (GUILayout.Button("Go !"))
        {
            DoProcess();
        }
    }

    private void DoProcess()
    {
        var fileName = "java";
        //java -jar sfnttool.jar -s '需要提取的字体' 源字体库 导出的最终字体库
        var commandLine = " -jar bin/" + jar_file + " -c " +
                          EditorCommon.RelativeToAbsolutePath(AssetDatabase.GetAssetPath(charsList)) + " " +
                          EditorCommon.RelativeToAbsolutePath(AssetDatabase.GetAssetPath(fontAsset)) + " " +
                          Application.dataPath + "/" + fontAsset.name + "_new.ttf";

        Process process = Process.Start(
            new ProcessStartInfo(fileName, commandLine)
            {
                RedirectStandardError = true,
                RedirectStandardOutput = true,
                UseShellExecute = false,
                CreateNoWindow = false,
                WorkingDirectory = workingPath,

                // http://stackoverflow.com/questions/16803748/how-to-decode-cmd-output-correctly
                // Default = 65533, ASCII = ?, Unicode = nothing works at all, UTF-8 = 65533, UTF-7 = 242 = WORKS!, UTF-32 = nothing works at all
                StandardOutputEncoding = Encoding.GetEncoding(850)
            });

        if (!process.WaitForExit(TimeOut))
        {
            Debug.LogWarning("FontPruner took too long to finish.  Killing operation.");
            process.Kill();
        }

        string error = process.StandardError.ReadToEnd();
        if (!string.IsNullOrEmpty(error))
        {
            Debug.LogError(error);
        }

        string output = process.StandardOutput.ReadToEnd();
        if (!string.IsNullOrEmpty(output))
        {
            Debug.Log(output);
        }
    }
}