using Hermes;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace VisionCommon {
    internal class RecipeUpdater_01_02 : Updater {
        private const string KEY_LOW_VERSION = nameof(UnitRecipe.UnitName);
        private const string KEY_HIGH_VERSION = "UnitName_02";

        public RecipeUpdater_01_02()
            : base(nameof(RecipeUpdater_01_02), 0.1, 0.2) {
        }

        protected override int Upgrade(JToken machineToken) {
            _logger.FuncI();

            string KEY_UPDATE_ITEM = KEY_LOW_VERSION;
            var removeTokenList = new List<JToken>();

            try {
                foreach (JToken recipe in RecipeUpdaterUtil.GetUnitRecipes(machineToken)) {
                    foreach (JToken item in recipe) {
                        if (RecipeUpdaterUtil.KeyEquals(item, KEY_UPDATE_ITEM)) {
                            removeTokenList.Add(item);
                        }
                    }
                }
                foreach (var token in removeTokenList) {
                    JToken oldItem = token.Parent.SelectToken(KEY_UPDATE_ITEM);
                    if (oldItem != null) {
                        string oldValue = oldItem.Value<string>();
                        token.AddBeforeSelf(new JProperty(KEY_HIGH_VERSION, JToken.FromObject(KEY_HIGH_VERSION)));
                        token.Remove();
                    }

                }
            }
            catch (Exception e) {
                _logger.E(e.Message);
                return E1.GENERIC;
            }

            return E1.OK;
        }

        protected override int Downgrade(JToken machineToken) {
            _logger.FuncI();

            string KEY_UPDATE_ITEM = KEY_HIGH_VERSION;
            var removeTokenList = new List<JToken>();

            try {
                foreach (JToken recipe in RecipeUpdaterUtil.GetUnitRecipes(machineToken)) {
                    foreach (JToken item in recipe) {
                        if (RecipeUpdaterUtil.KeyEquals(item, KEY_UPDATE_ITEM)) {
                            removeTokenList.Add(item);
                        }
                    }
                }
                foreach (var token in removeTokenList) {
                    JToken oldItem = token.Parent.SelectToken(KEY_UPDATE_ITEM);
                    if (oldItem != null) {
                        string oldValue = oldItem.Value<string>();
                        token.AddBeforeSelf(new JProperty(KEY_LOW_VERSION, JToken.FromObject(KEY_LOW_VERSION)));
                        token.Remove();
                    }
                }
            }
            catch (Exception e) {
                _logger.E(e.Message);
                return E1.GENERIC;
            }

            return E1.OK;
        }
    }
}