using LibGit2Sharp;
using Newtonsoft.Json.Linq;
using NLog;
using Server.System;
using System.Diagnostics;

namespace Server.Git
{
    public abstract class AbstractGit
    {
        public Crypto crypto = new Crypto();
        private static readonly NLog.ILogger logger = LogManager.GetCurrentClassLogger();
        public bool isRestart;
        string _repositoryPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "excel");

        public string repositoryPath { get { return _repositoryPath; } }

        /// <summary>
        /// 가장먼저 시작해야 하는 스크립트
        /// </summary>
        public void Init()
        {
        restart:
            isRestart = false;
            Pull();
            if (isRestart)
                goto restart;
            string excel = ChangeScript();
            if (isRestart)
                goto restart;
            Push(excel);
            if (isRestart)
                goto restart;
        }

        /// <summary>
        /// 엑셀 불러오기, 저장, 혹은 배포 까지 작업해야하는 함수
        /// </summary>
        public abstract string ChangeScript();

        private void Pull()
        {
            if (!Directory.Exists(_repositoryPath))
            {
                Directory.CreateDirectory(_repositoryPath);
                RepositorySet($"clone {STATICS.remoteUrl} {_repositoryPath}", null);

                //main브렌치로 세팅
                RepositorySet("branch -m main", _repositoryPath);
                RepositorySet("branch --set-upstream-to=origin/main main", _repositoryPath);
            }

            // pull 명령어 실행
            RepositorySet("pull", _repositoryPath);
        }

        private static void RepositorySet(string command, string workingDirectory)
        {
            ProcessStartInfo psi = new ProcessStartInfo
            {
                FileName = "git",
                Arguments = command,
                WorkingDirectory = workingDirectory,
                RedirectStandardOutput = true,
                RedirectStandardError = true,
                UseShellExecute = false,
                CreateNoWindow = true,
                EnvironmentVariables = { ["GIT_ASKPASS"] = "echo" }
            };
            using (Process process = new Process { StartInfo = psi })
            {
                process.Start();
                process.WaitForExit();

                // Git 명령 실행 결과 출력
                logger.Info(process.StandardOutput.ReadToEnd());
            }
        }

        private void Push(string excel)
        {
            if(excel == "")
            {
                return;
            }

            //json 저장
            using (StreamWriter writer = new StreamWriter(repositoryPath + @"/excel.json"))
            {
                writer.Write(excel);
                logger.Info($"save file : {repositoryPath + @"/excel.json"}");
            }
            //이곳에서 json변경후 저장
            //압축
            //string EncryptoExcel = crypto.Compress(excel);
            //암호화
            ProtocolProcessor.cryptoData = crypto.Compress(excel);
            // 스테이징
            RepositorySet("add .", repositoryPath);

            // 커밋
            RepositorySet($"commit -m \"update excel data\"", repositoryPath);

            // 푸시
            RepositorySet("push origin main", repositoryPath);

        }

        /// <summary>
        /// 모든 파일리스트 반환
        /// </summary>
        /// <param name="directoryPath">검색할 폴더 경로</param>
        /// <param name="extension">확장자</param>
        /// <returns></returns>
        public List<string> GetFiles(string directoryPath, string extension)
        {
            List<string> xlsxFileList = new List<string>();

            try
            {
                string[] files = Directory.GetFiles(directoryPath);

                foreach (string file in files)
                {
                    if (Path.GetExtension(file).Equals(".xlsx", StringComparison.OrdinalIgnoreCase))
                    {
                        xlsxFileList.Add(file);
                    }
                }

                string[] subdirectories = Directory.GetDirectories(directoryPath);
                foreach (string subdirectory in subdirectories)
                {
                    //git시스템 파일은 뛰어넘기
                    if (subdirectory == directoryPath + "\\.git")
                        continue;

                    //제귀
                    xlsxFileList.AddRange(GetFiles(subdirectory, extension));
                }
            }
            catch (Exception ex)
            {
                logger.Error(ex);
            }

            return xlsxFileList;
        }
    }
}