BPASmartClient/BPASmartClient.MorkTM/ViewModel/RecipeViewModel.cs

using BPASmartClient.MorkTM;
using Microsoft.Toolkit.Mvvm.ComponentModel;
using Microsoft.Toolkit.Mvvm.Input;
using Model;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Text;
using System.Windows;

namespace ViewModel
{
    public class RecipeViewModel : ObservableObject
    {
        //路径
        string recipePath = string.Empty;
        string posionPath = string.Empty;


        #region 奶茶配方录入
        /// <summary>
        /// 奶茶配方
        /// </summary>
        public ObservableCollection<MaterialRecipe> materialRecipes { get; set;} = new ObservableCollection<MaterialRecipe>();
        /// <summary>
        /// 出料集合
        /// </summary>
        public ObservableCollection<string> MaterailList { get; set; } = new ObservableCollection<string>();
        /// <summary>
        /// 奶茶名称
        /// </summary>
        public string LocalGoodName { get { return _localGoodName; } set { _localGoodName = value; OnPropertyChanged(); } }
        private string _localGoodName;
        /// <summary>
        /// 添加一条配方
        /// </summary>
        public RelayCommand AddRecipeCommand { get; set; }
        /// <summary>
        /// 删除一条配方
        /// </summary>
        public RelayCommand<object> RemoveRecipeCommand { get; set; }
        /// <summary>
        /// 取消配方
        /// </summary>
        public RelayCommand RecipeCancelCommand { get; set; }
        /// <summary>
        /// 保存配方
        /// </summary>
        public RelayCommand SaveRecipeCommand { get; set; }

        #endregion

        #region 本地奶茶配方
        /// <summary>
        /// 本地奶茶配方列表
        /// </summary>
        public ObservableCollection<LocalTeaWithMilkConfig> localMaterialRecipes  { get; set; } = new ObservableCollection<LocalTeaWithMilkConfig>();
        /// <summary>
        /// 删除配方奶茶
        /// </summary>
        public RelayCommand<object> DeleteRecipeCommand { get; set; }

        #endregion

        #region 物料位置名称
        /// <summary>
        /// 物料位置名称集合
        /// </summary>
        public ObservableCollection<MaterailNameAndPosion> materailNameAndPosions  { get; set; } = new ObservableCollection<MaterailNameAndPosion>();
        /// <summary>
        /// 更新物料位置
        /// </summary>
        public RelayCommand UpdateMaterialPosionCommand{ get; set; }
        #endregion

        public RecipeViewModel()
        {
            materialRecipes.Add(new MaterialRecipe()
            {
                MaterialWeight = 10
            });
           

            foreach (MaterialPosion item in Enum.GetValues(typeof(MaterialPosion)))
            {
                materailNameAndPosions.Add(new MaterailNameAndPosion()
                {
                    MaterialPosion = item.ToString()
                });
            }


            AddRecipeCommand = new RelayCommand(new Action(() =>
            {
                materialRecipes.Add(new MaterialRecipe()
                {
                    MaterialID = materialRecipes.Count() + 1
                }) ;
      
            }));

            RemoveRecipeCommand = new RelayCommand<object>((o=>
            {
                if(o!=null&&o is int index)
                {
                    materialRecipes.RemoveAt(index);
                    for (int i = 0; i < materialRecipes.Count; i++)//ID排序
                    {
                        materialRecipes[i].MaterialID = i + 1;
                    }
                }
                
            }));

            RecipeCancelCommand = new RelayCommand(new Action(() =>
            {
                materialRecipes.Clear();
            }));

            SaveRecipeCommand = new RelayCommand(new Action(() =>
            {
                if(LocalGoodName == "" || LocalGoodName == null) return;
                if(materialRecipes.Count == 0) return;
                
                localMaterialRecipes.Insert(0, new LocalTeaWithMilkConfig()
                {
                    GoodNames = LocalGoodName,
                    materialRecipes = materialRecipes

                });

                UpdateLocalJosnData<LocalTeaWithMilkConfig>(recipePath, localMaterialRecipes);//更新奶茶配方json文件
                MessageBox.Show("保存成功");
            }));


            DeleteRecipeCommand = new RelayCommand<object>((o =>
            {
                if (o != null && o is int index)
                {
                    localMaterialRecipes.RemoveAt(index);
                    UpdateLocalJosnData<LocalTeaWithMilkConfig>(recipePath, localMaterialRecipes);//更新奶茶配方json文件
                }
            }));

            UpdateMaterialPosionCommand = new RelayCommand(new Action(() =>
            {
                UpdateLocalJosnData<MaterailNameAndPosion>(posionPath, materailNameAndPosions);//更新物料位置名称
            }));

            Init();
        }

        /// <summary>
        /// 界面初始化加载
        /// </summary>
        private void Init()
        {
            string path = Path.Combine(Environment.CurrentDirectory, "AccessFile", "Recipes");
            //判断文件夹是否存在，如果不存在就创建file文件夹
            if (!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }
            recipePath = Path.Combine(path, "LocalRecipes.json");
            posionPath = Path.Combine(path, "MaterialPosion.json");

            localMaterialRecipes = GetJsonToT<LocalTeaWithMilkConfig>(recipePath);
            materailNameAndPosions = GetJsonToT<MaterailNameAndPosion>(posionPath);
            if(materailNameAndPosions.Count == 0)
            {
                foreach (MaterialPosion item in Enum.GetValues(typeof(MaterialPosion)))
                {
                    materailNameAndPosions.Add(new MaterailNameAndPosion()
                    {
                        MaterialPosion = item.ToString()
                    });
                }
            }

            foreach(MaterailNameAndPosion m in materailNameAndPosions)
            {
                if(m.MaterialName!=null) MaterailList.Add(m.MaterialName);

            }
            


        }

        /// <summary>
        /// 获取Json文件内容,转换成ObservableCollection
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="path"></param>
        /// <returns></returns>
        private ObservableCollection<T> GetJsonToT<T>(string path)
        {
            if (!File.Exists(path))
            {
                //创建该文件
                File.Create(path);
                return default;
            }
            else
            {
                using (StreamReader recipeReader = new StreamReader(path))//读取json文件
                {
                    string datacache = "";
                    string line;
                    while ((line = recipeReader.ReadLine()) != null)  //循环将每一行数据拼接为一个完整的字符串
                    {
                        datacache = datacache + line;  
                    }
                    
                    var res =  JsonConvert.DeserializeObject<ObservableCollection<T>>(datacache);  //将string转换为class类，从而达到json文件转换的目的
                    if(res != null)
                        return res;
                    else return new ObservableCollection<T> { };
                }
            }              
        }
        /// <summary>
        /// 更新Json文件数据
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="path"></param>
        /// <param name="ts"></param>
        private void UpdateLocalJosnData<T>(string path,ObservableCollection<T> ts)
        {
            if(ts != null) File.WriteAllText(path, JsonConvert.SerializeObject(ts));

        }
      
    }


   
}