using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.IO;

namespace SHARP_CLAS_UI
{
    public class Vision_Info_Manager
    {
        #region Define
        string str_extension = ".xml";
        #endregion

        #region Property
        private static readonly Lazy<Vision_Info_Manager> _instatnce = new Lazy<Vision_Info_Manager>(() => new Vision_Info_Manager());

        public static Vision_Info_Manager Instance
        {
            get
            {
                return _instatnce.Value;
            }
        }
        #endregion

        #region Field
        private Dictionary<string, Vision_Info_Recipe> Recipes;

        private Xml_Manager<Vision_Info_Recipe> xml_manager = new Xml_Manager<Vision_Info_Recipe>();

        private string file_path;
        #endregion

        #region Construct
        public Vision_Info_Manager()
        {
            Recipes = new Dictionary<string, Vision_Info_Recipe>();
            Get_Vision_Info_Recipes();
        }
        #endregion

        #region Function
        private void Get_File_Path()
        {
            RegistryKey rkk = Registry.CurrentUser.OpenSubKey(Equipment.Registry_Path, true);

            try
            {
                if (rkk == null)
                {
                    rkk = Registry.CurrentUser.CreateSubKey(Equipment.Registry_Path);

                    rkk.SetValue("VISION_INFO_RECIPE_PATH", @"C:\SHARP_CLAS\Config\VISION_INFO_RECIPE\");
                    file_path = @"C:\SHARP_CLAS\Config\VISION_INFO_RECIPE\";
                }
                else
                {
                    object value = rkk.GetValue("VISION_INFO_RECIPE_PATH");
                    if (value == null)
                    {
                        rkk.SetValue("VISION_INFO_RECIPE_PATH", @"C:\SHARP_CLAS\Config\VISION_INFO_RECIPE\");
                        file_path = @"C:\SHARP_CLAS\Config\VISION_INFO_RECIPE\";
                    }
                    else
                    {
                        file_path = value.ToString();
                    }
                }
            }
            finally
            {
                rkk.Close();
            }
        }

        private void Get_Vision_Info_Recipes()
        {
            Get_File_Path();

            Recipes.Clear();

            if (Directory.Exists(file_path))
            {
                DirectoryInfo di = new DirectoryInfo(file_path);
                FileInfo[] recipes = di.GetFiles($"*{str_extension}");

                foreach (FileInfo recipe in recipes)
                {
                    Vision_Info_Recipe vision_info = new Vision_Info_Recipe();

                    if (xml_manager.Try_Read_File(file_path + recipe, out vision_info))
                    {
                        if (Recipes.ContainsKey(vision_info.Name))
                        {
                            Recipes[vision_info.Name] = vision_info;
                        }
                        else
                        {
                            Recipes.Add(vision_info.Name, vision_info);
                        }
                    }
                }
            }
        }

        public void Refresh_Vision_Info()
        {
            Get_Vision_Info_Recipes();
        }

        public bool Exist_Recipe(string name)
        {
            foreach (Vision_Info_Recipe info in Recipes.Values)
            {
                if (name == info.Name)
                    return true;
            }

            return false;
        }

        public bool Create_Recipe(string name)
        {
            if (!Exist_Recipe(name))
            {
                Vision_Info_Recipe info = new Vision_Info_Recipe();
                info.Name = name;

                if (xml_manager.Try_Save_File(file_path + name + str_extension, info))
                {
                    Recipes.Add(name, info);
                    return true;
                }
                else
                    return false;
            }
            else
                return false;
        }

        public bool Delete_Recipe(string name)
        {
            if (Exist_Recipe(name))
            {
                Recipes.Remove(name);

                FileInfo fi = new FileInfo(file_path + name + str_extension);

                if (fi.Exists)
                {
                    fi.Delete();
                }
            }

            return true;
        }

        public bool Save_Recipe(string name, Vision_Info_Recipe info)
        {
            if (Exist_Recipe(name))
            {
                DateTime dt = Recipes[name].Create_Time;
                Recipes[name] = info.Clone();
                Recipes[name].Name = name;
                Recipes[name].Create_Time = dt;

                if (xml_manager.Try_Save_File(file_path + name + str_extension, Recipes[name]))
                {
                    return true;
                }
                else
                    return false;
            }
            else
            {
                return false;
            }
        }

        public bool Try_Get_Recipe(string name, out Vision_Info_Recipe info)
        {
            if (Exist_Recipe(name))
            {
                info = Recipes[name].Clone();
                return true;
            }
            else
            {
                info = null;
                return false;
            }
        }

        public Vision_Info_Recipe Get_Recipe(string name)
        {
            if (Exist_Recipe(name))
            {
                return Recipes[name].Clone();
            }
            else
            {
                return null;
            }
        }

        public Vision_Info_Recipe[] Get_Recipes()
        {
            List<Vision_Info_Recipe> recipes = new List<Vision_Info_Recipe>();
            recipes.Clear();

            foreach (Vision_Info_Recipe info in Recipes.Values)
            {
                recipes.Add(info.Clone());
            }

            return recipes.ToArray();
        }
        #endregion
    }
}