using WeldingCommon.Process;
using WeldingCommon.Settings;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;

namespace WeldingCommon.Tools
{
    public class CsvLogger
    {
        private readonly object _fileLock = new object();

        private readonly string _dirPath;          // 디렉터리 보관
        private readonly string _fileNamePrefix;   // 파일명 접두 (Default, 또는 인자)
        private readonly string _dateFormat = "yyyyMMdd";
        private string _currentDate;               // 마지막으로 쓴 날짜(yyyyMMdd)
        private string _filePath;                  // 현재 쓰는 파일 경로

        public CsvLogger(string filepath = null, string fileName = null)
        {
            _dirPath = string.IsNullOrWhiteSpace(filepath) ? AppDomain.CurrentDomain.BaseDirectory : filepath;

            Directory.CreateDirectory(_dirPath);

            _fileNamePrefix = string.IsNullOrWhiteSpace(fileName) ? "Default" : fileName;

            lock (_fileLock) {
                UpdateFileDate();
            }
        }

        private void UpdateFileDate()
        {
            string today = DateTime.Now.ToString(_dateFormat, CultureInfo.InvariantCulture);
            if (_currentDate == today && !string.IsNullOrEmpty(_filePath))
                return;

            _currentDate = today;
            string safeName = $"{_fileNamePrefix}_{_currentDate}.csv";
            _filePath = Path.Combine(_dirPath, safeName);

            if (!File.Exists(_filePath)) {
                File.AppendAllText(_filePath, "Time,Lot_ID,Cell_ID,Ng,Judge,HeightMeas1,HeightMeas2,HeightMeas3,HeightMeas4,HeightMeas5,HeightMeas6,HeightMeas7,HeightMeas8\n", Encoding.UTF8);
            }
        }

        public void WriteLine(string str)
        {
            lock (_fileLock) {
                UpdateFileDate();

                string time = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture);
                string line = $"{time},{str}";
                File.AppendAllText(_filePath, line + Environment.NewLine, Encoding.UTF8);
            }
        }

        public void WriteLineCellData(PalletInfo Cell)
        {
            var sb = new StringBuilder();
            sb.Append(Cell.weldingData.LotId); sb.Append(",");
            sb.Append(Cell.weldingData.CellId); sb.Append(",");
            sb.Append(Cell.weldingData.NgJudge > 0); sb.Append(",");
            sb.Append(Cell.weldingData.NgReason); sb.Append(",");
            foreach (var heightMeas in Cell.weldingData.HeightMeasurements) {
                sb.Append(heightMeas); sb.Append(",");
            }

            WriteLine(sb.ToString());

            //var inv = CultureInfo.InvariantCulture;
            //string data = string.Join(",", Cell.weldingData.HeightMeasurements.Select(d => d.ToString("G", inv)));
            //string line = $"{Cell.weldingData.LotId},{Cell.weldingData.CellId},{(Cell.weldingData.NgJudge > 0)},{Cell.weldingData.NgReason},{data}";
            //WriteLine(line);
        }

        public string GetFilePath()
        {
            lock (_fileLock) {
                UpdateFileDate();
                return _filePath;
            }
        }
    }
}