using Microsoft.Office.Interop.Excel;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
using System.Xml;
using VisionCommon;
using static GUI.MainPage;
using static System.Windows.Forms.VisualStyles.VisualStyleElement;

namespace DB
{
    public class RecipeFieldScan
    {
        private static readonly RecipeFieldScan instance = new RecipeFieldScan();

        static RecipeFieldScan() { }
        private RecipeFieldScan() { }
        public static RecipeFieldScan Instance { get { return instance; } }

        private string defaultScoutName = "D:\\ILSOSConfig\\ILSOS_PrismaticScanner\\_vision\\FieldScanImage\\Default\\DefaultFieldScanImage.Jpeg";

        #region GUI에서 활용하는 함수 (영역 업데이트, 필드 로드, 필드 저장, 필드 영역 전달 등등)
        public void UpdateScoutField(List<ChildBufRowCol> fieldScan, int selectedIndex)
        {
            if (fieldScanDatas.Count() - 1 < selectedIndex) {
                for (int i = fieldScanDatas.Count() - 1; i < selectedIndex; i++) {
                    if (fieldScanDatas.Count() == 0) AddFieldScanData(GetAutoPageName(selectedIndex), defaultScoutName, fieldScan);
                    else {
                        string str = GetPageImageName(GetAutoPageName(fieldScanDatas.Count - 1), ref defaultScoutName);
                        AddFieldScanData(GetAutoPageName(selectedIndex), str, fieldScan);
                    }
                }
            } else {
                ChangeFieldScan(GetAutoPageName(selectedIndex), fieldScan);
            }
        }
        public void LoadFieldHelper(string fileName, int pageCount, string defaultFileStr = null, List<ChildBufRowCol> defaultChildBufRowCols=null)
        {
            try {
                XmlDocument doc = new XmlDocument();
                var extenstion = Path.GetExtension(fileName);

                if (!File.Exists(fileName)) File.WriteAllText(fileName, "");

                if (extenstion == ".json") {
                    var jsonString = File.ReadAllText(fileName);
                } else {
                    FileInfo fi = new FileInfo(fileName);
                    StreamReader sr = new StreamReader(fileName);
                    doc.Load(sr);
                    sr.Dispose();
                }

                XmlElement root = doc.DocumentElement;


                // JSON 파일 읽기, JSON을 List로 변환
                string json = File.ReadAllText(fileName);
                List<FieldScanData> jsonData = new List<FieldScanData>();

                if (json != null && json != "") jsonData = System.Text.Json.JsonSerializer.Deserialize<List<FieldScanData>>(json);
                else ;

                fieldScanDatas.Clear();

                // default 값 써주기
                FieldScanData defaultFieldScan = new FieldScanData("none", defaultFileStr, defaultChildBufRowCols);

                // page 개수보다 입력된 개수가 작을 경우(비정상)와 정상인 경우에 따라 다르게 저장.
                if (jsonData.Count != pageCount) {
                    for (int i = 0; i < pageCount; i++) {
                        // PageName이 동일하다면 그대로 써줄 것. 아니라면, 초기 값을 써줄 것.
                        var modifyFieldScan = jsonData.FirstOrDefault(f => f.PageName.Equals(GetAutoPageName(i), StringComparison.OrdinalIgnoreCase));
                        if (modifyFieldScan != null && modifyFieldScan.FieldScans != null && modifyFieldScan.FileName != null) AddFieldScanData(modifyFieldScan.PageName, modifyFieldScan.FileName, modifyFieldScan.FieldScans);
                        else AddFieldScanData(GetAutoPageName(i), defaultFieldScan.FileName, defaultFieldScan.FieldScans);
                    }
                } else {
                    foreach (FieldScanData js in jsonData) {
                        if (js != null && js.FieldScans != null && js.FileName != null)  AddFieldScanData(js.PageName, js.FileName, js.FieldScans);
                        else AddFieldScanData(js.PageName, defaultFieldScan.FileName, defaultFieldScan.FieldScans);
                    }
                }
            } catch (Exception ex) {
                throw ex;
            }
        }
        /// <summary>
        /// Scout 후, Field Size 변경 후, Recipe 저장 시 FieldScan 저장되어야 함.
        /// </summary>
        /// <param name="fileName"></param>
        /// <param name="defaultFileStr"></param>
        public void SaveFieldHelper(string fileName, string defaultFileStr = null)
        {
            try {
                using (MemoryStream stream = new MemoryStream()) {
                    XmlTextWriter wr = new XmlTextWriter(stream, Encoding.UTF8);
                    wr.Formatting = System.Xml.Formatting.Indented;
                    wr.Flush();

                    foreach(FieldScanData fieldScan in fieldScanDatas) {
                        fieldScan.FieldScans
                        .OrderBy(row => row.RowIdx)
                        .ThenBy(col => col.ColIdx)
                        .Select(param => param.Clone() as ChildBufRowCol)
                        .ToList();
                    }

                    var json = System.Text.Json.JsonSerializer.Serialize(fieldScanDatas, new JsonSerializerOptions { WriteIndented = true });
                    File.WriteAllText(fileName, json);
                }
            } catch {

            }
        }
        public List<ChildBufRowCol> GetPageFieldScan(string pageName)
        {
            var modifyFieldScan = fieldScanDatas.FirstOrDefault(f => f.PageName.Equals(pageName, StringComparison.OrdinalIgnoreCase));
            if (modifyFieldScan != null) {
                return modifyFieldScan.FieldScans
                .OrderBy(row => row.RowIdx)
                .ThenBy(col => col.ColIdx)
                .Select(param => param.Clone() as ChildBufRowCol)
                .ToList();
            } else return null;
        }
        public string GetAutoPageName(int pageNo) { return string.Format("selectedIndex{0}", pageNo); }
        #endregion

        #region Dictionary 관리를 위한 함수
        void AddFieldScanData(string pageName, string fileName, List<ChildBufRowCol> childBuf)
        {
            fieldScanDatas.Add(new FieldScanData(pageName,fileName,childBuf));
            for (int i = 0; i < fieldScanDatas.Count(); i++) {
                fieldScanDatas[i].PageName = GetAutoPageName(i);
            }
        }
        public void DeleteFieldScanData(string pageName)
        {
            fieldScanDatas = fieldScanDatas.Where(fieldScan => fieldScan.PageName != pageName).ToList();
            for (int i = 0; i < fieldScanDatas.Count(); i++) {
                fieldScanDatas[i].PageName = GetAutoPageName(i);
            }
        }
        bool ChangeFieldScan(string pageName, List<ChildBufRowCol> childBuf)
        {
            var modifyFieldScan = fieldScanDatas.FirstOrDefault(f => f.PageName.Equals(pageName, StringComparison.OrdinalIgnoreCase));
            if (modifyFieldScan != null) {
                modifyFieldScan.FieldScans = childBuf;
                return true;
            } else return false;
        }
        public bool ChangeFieldString(string pageName, string fileName)
        {
            var modifyFieldScan = fieldScanDatas.FirstOrDefault(f => f.PageName.Equals(pageName, StringComparison.OrdinalIgnoreCase));
            if (modifyFieldScan != null) {
                modifyFieldScan.FileName = fileName;
                return true;
            } else return false;
        }
        public string GetPageImageName(string pageName, ref string defaultStr)
        {
            var modifyFieldScan = fieldScanDatas.FirstOrDefault(f => f.PageName.Equals(pageName, StringComparison.OrdinalIgnoreCase));
            if (modifyFieldScan != null) {
                return modifyFieldScan.FileName;
            } else return defaultStr;
        }
        #endregion

        #region 데이터를 위한 Class
        private List<FieldScanData> fieldScanDatas = new List<FieldScanData>();
        public class FieldScanData
        {
            public string PageName { get; set; }
            public string FileName { get; set; }
            public List<ChildBufRowCol> FieldScans { get; set; }

            public FieldScanData(string pageName, string fileName, List<ChildBufRowCol> fieldScans)
            {
                this.PageName = pageName;
                this.FileName = fileName;
                this.FieldScans = fieldScans;
            }
        }
        #endregion
    }
}