using CoreUnit.Common;
using Newtonsoft.Json.Linq;
using System;
using System.Configuration;
using System.IO;
using System.Linq;

namespace DB
{
    public class RecipeExIds
    {
        public const string RECIPE_DIR = "_config_recipe";
        public const string SETTING_DIR = "_config_setting";
        public const string TEACHING_EDITOR_RECIPE = "TeachingEditor.json";
        public const string SYSTEM_PARAMETER = "SystemParameterILSOS.json";
        public const string CAPTURED_TEACHING = "CapturedTeaching.bmp";
    }

    public class LASARecipeHelper
    {
        static string mSystemParameterPath = string.Empty;
        static string SytemParameterPath {
            get {
                if (string.IsNullOrWhiteSpace(mSystemParameterPath)) {
                    mSystemParameterPath = Path.Combine(
                        ConfigurationManager.AppSettings.Get("DATA_PATH"),
                        RecipeExIds.SETTING_DIR,
                        RecipeExIds.SYSTEM_PARAMETER);
                }
                return mSystemParameterPath;
            }
        }

        static bool CopyIfNotExist(string path)
        {
            if (!File.Exists(path)) {
                var dir = Path.GetDirectoryName(path);
                if (!Directory.Exists(dir)) {
                    Directory.CreateDirectory(Path.GetDirectoryName(path));
                }
                File.Copy(@"..\..\..\External\LaserScanner\SystemRecipe.json", path);
                return true;
            }
            return false;
        }

        public static object GetValue(string ID, object defaultValue)
        {
            CopyIfNotExist(SytemParameterPath);

            var recipeStr = File.ReadAllText(SytemParameterPath);
            try {
                if (!string.IsNullOrWhiteSpace(recipeStr)) {
                    var jproperties = JObject.Parse(recipeStr);
                    return jproperties.FirstOrDefault(ID);
                }
            } catch (Exception ex) {
                var message = ex.Message;
            }
            return defaultValue;
        }

        public static void SaveValues(string ID, object value)
        {
            CopyIfNotExist(SytemParameterPath);

            try {
                var recipeStr = File.ReadAllText(SytemParameterPath);

                if (!string.IsNullOrWhiteSpace(recipeStr)) {
                    var jproperties = JObject.Parse(recipeStr);
                    var firstToken = jproperties.FindTokens(ID);
                    if (firstToken.Count() == 0) {
                        jproperties.Add(ID, value.ToString());
                        File.WriteAllText(SytemParameterPath, jproperties.ToString());
                    } else {
                        jproperties.Remove(ID);
                        jproperties.Add(ID, value.ToString());
                        File.WriteAllText(SytemParameterPath, jproperties.ToString());
                    }
                } else {
                    var newProperty = new JObject
                    {
                        new JProperty(ID, value)
                    };

                    File.WriteAllText(SytemParameterPath, newProperty.ToString());
                }
            } catch (Exception ex) {
                var message = ex.Message;
            }

        }
    }
}