using System;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Text.RegularExpressions;
using game;
using UnityEditor;
using UnityEditor.Compilation;
using UnityEngine;
using Debug = UnityEngine.Debug;
using Object = UnityEngine.Object;
#if UNITY_IOS
using UnityEditor.iOS.Xcode;
#endif

public class EditorDevUtils
{
    private static Process StartGamectlTask(string task)
    {
        var p = new Process();

        //NOTE: Invoking command in shell on OSX to setup proper paths
        if (Environment.OSVersion.Platform == PlatformID.Unix)
        {
            PatchPATH();
            p.StartInfo.FileName = "bash";
            p.StartInfo.Arguments =
                "-c 'source ~/.bash_profile; php " + Application.dataPath + "/../gamectl " + task + "'";
        }
        else
        {
            p.StartInfo.FileName = "php";
            p.StartInfo.Arguments = Application.dataPath + "/../gamectl " + task;
        }

        p.StartInfo.UseShellExecute = false;
        p.StartInfo.RedirectStandardOutput = true;
        p.StartInfo.RedirectStandardError = true;
        p.Start();

        return p;
    }

    private static void PatchPATH()
    {
        string path = Environment.GetEnvironmentVariable("PATH");
        Environment.SetEnvironmentVariable("PATH", "/usr/local/bin:" + path);
    }

    public static void ProcessAdbTask(string task)
    {
        var p = new Process();

        if (Environment.OSVersion.Platform == PlatformID.Unix)
        {
            p.StartInfo.FileName = "bash";
            p.StartInfo.Arguments = "-c 'source ~/.bash_profile; adb " + task + "'";
        }
        else
        {
            p.StartInfo.FileName = "adb";
            p.StartInfo.Arguments = task;
        }

        p.StartInfo.UseShellExecute = false;
        p.StartInfo.RedirectStandardOutput = true;
        p.StartInfo.RedirectStandardError = true;
        p.Start();

        p.WaitForExit();
        Log.Debug($"Done running 'adb {task}', exit code: {p.ExitCode}");
        if (p.ExitCode != 0)
            ShowProcError(p);
    }

    public static void ShowProcError(Process p)
    {
        string err_msg = p.StandardError.ReadToEnd();
        string out_msg = p.StandardOutput.ReadToEnd();
        //NOTE: showing error first so that it's visible immediately in the console log
        Debug.LogError(err_msg + "\n\n" + out_msg + err_msg);
    }

    public static void ProcessGamectlTask(string task, Action<Process, StreamReader> cb)
    {
        ClearCompilationErrors();

        Process p = StartGamectlTask(task);
        StreamReader s = p.StandardOutput;

        p.WaitForExit();

        cb(p, s);

        if (p.ExitCode == 0)
            return;

        string errMsg = p.StandardError.ReadToEnd();
        string outMsg = p.StandardOutput.ReadToEnd();

        if (TryGuessErrorFileAndLine(errMsg, out string file, out int line))
            EmulateCompilationError(errMsg, file, line);
        else
            Debug.LogError(errMsg + "\n\n" + outMsg + errMsg);
    }

    private static bool TryGuessErrorFileAndLine(string err_msg, out string file, out int line)
    {
        file = "";
        line = -1;

        var m = Regex.Match(err_msg, "File '([^']+)'");
        if (!m.Success)
            return false;

        line = 0;
        file = m.Groups[1].ToString();

        return true;
    }

    private static void EmulateCompilationError(string err_msg, string file, int line)
    {
        var m = typeof(CompilationPipeline).GetMethod("LogEditorCompilationError",
            BindingFlags.Static | BindingFlags.NonPublic);

        string rel_file = Path.GetFullPath(file)
            .Replace(Path.GetFullPath(Application.dataPath) + Path.DirectorySeparatorChar,
                $"Assets{Path.DirectorySeparatorChar}");
        var asset = AssetDatabase.LoadAssetAtPath<Object>(rel_file);

        if (asset == null)
            return;

        m.Invoke(null, new object[] { rel_file + "(1,1): error: " + err_msg, asset.GetInstanceID() });
    }

    private static void ClearCompilationErrors()
    {
        var m = typeof(CompilationPipeline).GetMethod("ClearEditorCompilationErrors",
            BindingFlags.Static | BindingFlags.NonPublic);
        m?.Invoke(null, null);
    }

    public static bool ProcessGamectlTask(string task)
    {
        var success = false;
        ProcessGamectlTask(task, (process, reader) =>
        {
            success = process.ExitCode == 0;
        });

        return success;
    }

    public static bool IsBatchMode()
    {
        string cli_opts = Environment.CommandLine;
        return cli_opts.Contains("-batchmode");
    }

    public static string GameRoot()
    {
        char sep = Path.DirectorySeparatorChar;
        return Path.GetFullPath(Application.dataPath + $"{sep}..{sep}..{sep}");
    }

    public static void DrawHorizontalSeparator(Color color, float padding = 4)
    {
        const float thickness = 1;
        const float padding_y = 3;

        GUILayout.Space(padding_y);

        var r = EditorGUILayout.GetControlRect(GUILayout.Height(thickness));
        r.height = thickness;
        r.x += padding;
        r.width -= 2 * padding;
        EditorGUI.DrawRect(r, color);

        GUILayout.Space(padding_y);
    }

    public static string GetFilePath(ConfBase cb)
    {
        return AliasToFilePath(cb.strid);
    }

    public static string AliasToFilePath(string conf_alias)
    {
        return conf_alias.Replace("@", GameRoot() + "configs/") + ".conf.js";
    }

    public static string FilePathToAlias(string file_path)
    {
        return file_path.Replace(GameRoot() + "configs/", "@").Replace(".conf.js", "");
    }

    public static void WriteConfByAlias(string alias, string content)
    {
        string file_path = AliasToFilePath(alias);
        Directory.CreateDirectory(Path.GetDirectoryName(file_path));
        WriteConfigPreserveHeader(file_path, content);
    }

    public static string ExtractJsonHeader(string json, out uint id, out string strid)
    {
        uint tmp_id = 0;
        var tmp_strid = "";

        json = Regex.Replace(json, "^\\{\\s*/\\*\\s*proto_id\\s*=\\s*(\\d+)\\s*;\\s*alias\\s*=\\s*(\\S+)\\s*\\*/",
            delegate(Match m)
            {
                if (m.Success)
                {
                    tmp_id = uint.Parse("" + m.Groups[1]);
                    tmp_strid = "" + m.Groups[2];
                    return "{\n";
                }

                return m.Value;
            }
        );

        id = tmp_id;
        strid = tmp_strid;

        return json;
    }

    public static void RemoveConfigHeader(string path)
    {
        if (!File.Exists(path))
            return;

        string[] lines = File.ReadAllLines(path);

        int idx = lines[0].IndexOf('/');
        if (idx != -1)
            lines[0] = lines[0].Remove(idx);

        File.WriteAllLines(path, lines);
    }

    public static void WriteConfigPreserveHeader(string path, string json)
    {
        if (File.Exists(path))
        {
            string prev_json = File.ReadAllText(path);
            //NOTE: let's preserve header info
            uint id = 0;
            var strid = "";
            ExtractJsonHeader(prev_json, out id, out strid);

            if (id != 0)
            {
                int first_bracket = json.IndexOf("{");

                Error.Assert(first_bracket != -1);

                json =
                    "{ /* proto_id = " + id + " ; alias = " + strid + " */" +
                    json.Substring(first_bracket + 1);
            }
        }

        File.WriteAllText(path, json);
    }

    //public static string ReplaceIdToStrid<T>(string json, string field_name, Configs configs) where T : ConfBase
    //{
    //  for(int i = 0; i < configs.Count; ++i)
    //  {
    //    uint id = configs[i].id;
    //    var conf = configs.Find<T>(id);
    //    if(conf != null && conf is T)
    //      json = json.Replace($"\"{field_name}\": {conf.id}", $"\"{field_name}\": \"{conf.strid}\"");
    //  }
    //  return json;
    //}

    public static string ReplaceI18N(string json, string field_name)
    {
        json = json.Replace($"\"_{field_name}\": ", $"\"{field_name}\": ");
        json = Regex.Replace(json, $",(\n|\r|\r\n) .*\"__{field_name}\": \\[\\]", "", RegexOptions.Multiline);
        json = json.Replace(@"\r", "");
        return json;
    }

    //public static string ReplaceStridToId<T>(string json, string field_name, Configs configs) where T : ConfBase
    //{
    //  for(int i = 0; i < configs.Count; ++i)
    //  {
    //    uint id = configs[i].id;
    //    var conf = configs.Find<T>(id);
    //    if(conf != null && conf is T)
    //      json = json.Replace($"\"{field_name}\": \"{conf.strid}\"", $"\"{field_name}\": {conf.id}");
    //  }
    //  return json;
    //}

#if UNITY_IOS
    public static void IOSAddLocalFile(string buildPath, PBXProject proj, string targetName, string fileDir,
        string fileName)
    {
        string filePath = Path.Combine(fileDir, fileName);
        File.Copy(filePath, Path.Combine(buildPath, fileName));
        proj.AddFileToBuild(targetName, proj.AddFile(fileName, fileName));
    }
#endif

    public static string ToShortName(string file, string path)
    {
        return file.Replace(path + "/", "");
    }
}