using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using DM_Weight.Models;
using DM_Weight.util;
using System.Data;
using System.Configuration;

namespace DM_Weight.ViewModels
{
    public class RoleManagerWindowViewModel : BindableBase, IConfirmNavigationRequest, IRegionMemberLifetime
    {
        private List<RoleDm>? _roleList;
        public List<RoleDm>? RoleList
        {
            get { return _roleList; }
            set { SetProperty(ref _roleList, value); }
        }

        //public RoleManagerWindowViewModel()
        //{
        //    _allPremissions = Clone<PremissionDm>(defaultAll);
        //}
       
        public static ObservableCollection<T> Clone<T>(object List)
        {
            using (Stream objectStream = new MemoryStream())
            {
                IFormatter formatter = new BinaryFormatter();
                formatter.Serialize(objectStream, List);
                objectStream.Seek(0, SeekOrigin.Begin);
                return formatter.Deserialize(objectStream) as ObservableCollection<T>;
            }
        }

        private RoleDm _role = new RoleDm();
        public RoleDm Role
        {
            get { return _role; }
            set
            {
                CompareList(value);
                SetProperty(ref _role, value);
            }
        }


        private void CompareList(RoleDm Role)
        {

            AllPremissions = Clone<PremissionDm>(defaultAll);
            RightPremissions.Clear();
            if (Role != null && Role.Permissions != null)
            {
                List<PremissionDm> Permissions = Role.Permissions;
                Permissions.ForEach(it =>
                {
                    // 父菜单
                    PremissionDm p = AllPremissions.ToList().Find(it2 => it2.Id == it.Id);
                    int index = AllPremissions.ToList().FindIndex(it2 => it2.Id == it.Id);
                    if (p.Id != 6)
                    {
                        it.Children.ToList().ForEach(it3 =>
                        {
                            int i =p.Children.ToList().FindIndex(it4 => it4.Id == it3.Id);
                            if (i > 0 && AllPremissions.ElementAt(index).Children.Count > i) 
                            {
                                AllPremissions.ElementAt(index).Children.RemoveAt(i);
                            }
                        });
                        if (p.Children.Count == 0)
                        {
                            AllPremissions.RemoveAt(index);
                        }
                    } else
                    {
                        AllPremissions.RemoveAt(index);
                    }
                    
                });
                RightPremissions = new ObservableCollection<PremissionDm>(Permissions);
            }
        }

        private string? _searchValue;

        /// <summary>
        /// 查询条件 查询字段值
        /// </summary>
        public string? SearchValue
        {
            get { return _searchValue; }
            set
            {
                SetProperty(ref _searchValue, value);
                RequestData();
            }
        }

        public static ObservableCollection<PremissionDm> defaultAll = new ObservableCollection<PremissionDm>();

        static RoleManagerWindowViewModel()
        {
            #region 取药菜单
            PremissionDm quyao = new PremissionDm{
                Id = 1,
                PremissionName = "取药",
                PremissionImage = "/Images/TbQyao.png",
            };
            ObservableCollection<PremissionDm> quyaoChild = new ObservableCollection<PremissionDm>();
            PremissionDm quyao1 = new PremissionDm
            {
                Id = 11,
                PremissionName = "处方取药",
                PremissionPath = "OrderTakeDrugWindow",
            };
            PremissionDm quyao2 = new PremissionDm
            {
                Id = 12,
                PremissionName = "调拨出库",
                PremissionPath = "InvoiceOutWindow",
            };
            PremissionDm quyao3 = new PremissionDm
            {
                Id = 13,
                PremissionName = "抽屉取药",
                PremissionPath = "DrawerTakeDrugWindow",
            };
            PremissionDm quyao4 = new PremissionDm
            {
                Id = 14,
                PremissionName = "自选取药",
                PremissionPath = "SelfTakeDrugWindow",
            };
            PremissionDm quyao5 = new PremissionDm
            {
                Id = 15,
                PremissionName = "取药记录",
                PremissionPath = "TakeRecordWindow",
            };
            PremissionDm quyao6 = new PremissionDm
            {
                Id = 16,
                PremissionName = "手术取药",
                PremissionPath = "OperationTakeWindow",
            };
            quyaoChild.Add(quyao1);
            quyaoChild.Add(quyao2);
            quyaoChild.Add(quyao3);
            quyaoChild.Add(quyao4);
            quyaoChild.Add(quyao5);
            quyaoChild.Add(quyao6);
            quyao.Children = quyaoChild;
            defaultAll.Add(quyao);
            #endregion
            #region 加药菜单
            PremissionDm jiayao = new PremissionDm
            {
                Id = 2,
                PremissionName = "加药",
                PremissionImage = "/Images/TbJiay.png",
            };
            ObservableCollection<PremissionDm> jiayaoChild = new ObservableCollection<PremissionDm>();
            PremissionDm jiayao1 = new PremissionDm
            {
                Id = 21,
                PremissionName = "自选加药",
                PremissionPath = "SelfAddWindow",
            };
            PremissionDm jiayao2 = new PremissionDm
            {
                Id = 22,
                PremissionName = "调拨入库",
                PremissionPath = "InvoiceInWindow",
            };
            PremissionDm jiayao3 = new PremissionDm
            {
                Id = 23,
                PremissionName = "抽屉加药",
                PremissionPath = "DrawerAddDrugWindow",
            };
            PremissionDm jiayao4 = new PremissionDm
            {
                Id = 25,
                PremissionName = "加药记录",
                PremissionPath = "AddRecordWindow",
            };
            PremissionDm jiayao5 = new PremissionDm
            {
                Id = 24,
                PremissionName = "多批次抽屉加药",
                PremissionPath = "AddDrugControl",
            };
            jiayaoChild.Add(jiayao1);
            jiayaoChild.Add(jiayao2);
            jiayaoChild.Add(jiayao3);
            jiayaoChild.Add(jiayao5);
            jiayaoChild.Add(jiayao4);
            jiayao.Children = jiayaoChild;
            defaultAll.Add(jiayao);
            #endregion
            #region 还药菜单
            PremissionDm huanyao = new PremissionDm
            {
                Id = 3,
                PremissionName = "还药",
                PremissionImage = "/Images/TbTuiy.png",
            };
            ObservableCollection<PremissionDm> huanyaoChild = new ObservableCollection<PremissionDm>();
            PremissionDm huanyao1 = new PremissionDm
            {
                Id = 31,
                PremissionName = "归还药品",
                PremissionPath = "ReturnDrugWindow",
            };
            PremissionDm huanyao11 = new PremissionDm
            {
                Id = 31,
                PremissionName = "归还药品",
                PremissionPath = "ReturnDrugWindow2",
            };
            PremissionDm huanyao2 = new PremissionDm
            {
                Id = 32,
                PremissionName = "归还空瓶",
                PremissionPath = "ReturnEmptyWindow",
            };
            PremissionDm huanyao3 = new PremissionDm
            {
                Id = 33,
                PremissionName = "归还记录",
                PremissionPath = "ReturnRecordWindow",
            };
            huanyaoChild.Add(Convert.ToInt32(ConfigurationManager.AppSettings["returnDrugMode"]) == 1? huanyao11:huanyao1);
            huanyaoChild.Add(huanyao2);
            huanyaoChild.Add(huanyao3);
            huanyao.Children = huanyaoChild;
            defaultAll.Add(huanyao);
            #endregion
            #region 库存管理菜单 
            PremissionDm kuguan = new PremissionDm
            {
                Id = 4,
                PremissionName = "库存管理",
                PremissionImage = "/Images/TbKuc.png",
            };
            ObservableCollection<PremissionDm> kuguanChild = new ObservableCollection<PremissionDm>();
            PremissionDm kuguan1 = new PremissionDm
            {
                Id = 41,
                PremissionName = "库存列表",
                PremissionPath = "StockListWindow",
            };
            PremissionDm kuguan2 = new PremissionDm
            {
                Id = 42,
                PremissionName = "库存盘点",
                PremissionPath = "CheckStockWindow",
            };
            PremissionDm kuguan3 = new PremissionDm
            {
                Id = 43,
                PremissionName = "盘点记录",
                PremissionPath = "CheckRecordWindow",
            };
            PremissionDm kuguan4 = new PremissionDm
            {
                Id = 44,
                PremissionName = "药品列表",
                PremissionPath = "DrugListWindow",
            };
            PremissionDm kuguan5 = new PremissionDm
            {
                Id = 45,
                PremissionName = "交接班记录",
                PremissionPath = "ChangeShiftsListWindow",
            };
            kuguanChild.Add(kuguan1);
            kuguanChild.Add(kuguan2);
            kuguanChild.Add(kuguan3);
            kuguanChild.Add(kuguan4);
            kuguanChild.Add(kuguan5);
            kuguan.Children = kuguanChild;
            defaultAll.Add(kuguan);
            #endregion
            #region 系统设置菜单
            PremissionDm sysset = new PremissionDm
            {
                Id = 5,
                PremissionName = "系统设置",
                PremissionImage = "/Images/TbSet.png",
            };
            ObservableCollection<PremissionDm> syssetChild = new ObservableCollection<PremissionDm>();
            PremissionDm sysset1 = new PremissionDm
            {
                Id = 51,
                PremissionName = "用户管理",
                PremissionPath = "UserManagerWindow",
            };
            PremissionDm sysset2 = new PremissionDm
            {
                Id = 52,
                PremissionName = "角色管理",
                PremissionPath = "RoleManagerWindow",
            };
            PremissionDm sysset3 = new PremissionDm
            {
                Id = 53,
                PremissionName = "设置",
                PremissionPath = "SettingWindow",
            };
            syssetChild.Add(sysset1);
            syssetChild.Add(sysset2);
            syssetChild.Add(sysset3);
            sysset.Children = syssetChild;
            defaultAll.Add(sysset);
            #endregion
            #region 退出菜单
            PremissionDm logout = new PremissionDm
            {
                Id = 6,
                PremissionName = "退出",
                PremissionImage = "/Images/TbExit.png",
            };
            defaultAll.Add(logout);
            #endregion
        }

        private ObservableCollection<PremissionDm> _allPremissions = Clone<PremissionDm>(defaultAll);
        public ObservableCollection<PremissionDm> AllPremissions
        {
            get => _allPremissions;
            set => SetProperty(ref _allPremissions, value);
        }

        private PremissionDm? _leftPremission ;
        public PremissionDm? LeftPremission
        {
            get => _leftPremission;
            set => SetProperty(ref _leftPremission, value);
        }
        private ObservableCollection<PremissionDm> _rightPremissions = new ObservableCollection<PremissionDm>();

        public ObservableCollection<PremissionDm> RightPremissions
        {
            get => _rightPremissions;
            set => SetProperty(ref _rightPremissions, value);
        }

        private PremissionDm? _rightPremission;
        public PremissionDm? RightPremission
        {
            get => _rightPremission;
            set => SetProperty(ref _rightPremission, value);
        }

        public bool KeepAlive => false;

        public T DeepCopyByReflect<T>(T obj)
        {
            //如果是字符串或值类型则直接返回
            if (obj == null || (obj is string) || (obj.GetType().IsValueType)) return obj;

            object retval = Activator.CreateInstance(obj.GetType());
            FieldInfo[] fields = obj.GetType().GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static);
            foreach (FieldInfo field in fields)
            {
                try { field.SetValue(retval, DeepCopyByReflect(field.GetValue(obj))); }
                catch { }
            }
            return (T)retval;
        }
        public DelegateCommand Query
        {
            get => new DelegateCommand(() =>
            {
                RequestData();
            });
        }

        public DelegateCommand ToRight => new DelegateCommand(() =>
        {
            // 说明是父菜单
            if (LeftPremission.Children != null || LeftPremission.Id == 6)
            {
                // 右侧有没有此菜单
                int index = RightPremissions.ToList().FindIndex((it) => it.Id == LeftPremission.Id);
                // 已经存在
                if (index > -1)
                {
                    // 获取右侧中的菜单
                    PremissionDm item = RightPremissions.ElementAt(index);
                    // 向其中添加子菜单
                    LeftPremission.Children.ToList().ForEach(it =>
                    {
                        int v = it.Id % 10;
                        if (v > item.Children.Count)
                        {
                            item.Children.Add(it);
                        } else
                        {
                            item.Children.Insert(v-1, it);
                        }
                    });
                }
                else
                {
                    int v = LeftPremission.Id % 10;
                    if (v > RightPremissions.Count)
                    {
                        RightPremissions.Add(LeftPremission);
                    }
                    else
                    {
                        RightPremissions.Insert(v - 1, LeftPremission);
                    }
                   
                }

                AllPremissions.RemoveAt(AllPremissions.ToList().FindIndex(it => it.Id == LeftPremission.Id));
            }
            // 子菜单
            else
            {
                // 查找所选子菜单的父菜单
                PremissionDm item = AllPremissions.ToList().Find(it => (int)(LeftPremission.Id / 10) == it.Id);
                // 查找父菜单是否在右侧
                int index = RightPremissions.ToList().FindIndex(it => it.Id == item.Id);
                // 存在
                if (index > -1)
                {
                    ObservableCollection<PremissionDm>  a= RightPremissions.ElementAt(index).Children;
                    int v = LeftPremission.Id % 10;
                    if (v > a.Count)
                    {
                        a.Add(LeftPremission);
                    }
                    else
                    {
                        a.Insert(v - 1, LeftPremission);
                    }
                    item.Children.RemoveAt(item.Children.ToList().FindIndex(it => it.Id == LeftPremission.Id));
                    if (item.Children.Count == 0)
                    {
                        AllPremissions.RemoveAt(AllPremissions.ToList().FindIndex(it => it.Id == LeftPremission.Id));
                    }
                }
                // 不存在
                else
                {
                    // 拷贝
                    PremissionDm item2 = DeepCopyByReflect<PremissionDm>(item);
                    ObservableCollection<PremissionDm> child = new ObservableCollection<PremissionDm>();
                    child.Add(LeftPremission);
                    item2.Children = child;
                    int v = item2.Id % 10;
                    if (v > RightPremissions.Count)
                    {
                        RightPremissions.Add(item2);
                    }
                    else
                    {
                        RightPremissions.Insert(v - 1, item2);
                    }
                    

                    item.Children.RemoveAt(item.Children.ToList().FindIndex(it => it.Id == LeftPremission.Id));
                }

            }
        });
        public DelegateCommand<PremissionDm> LeftSelectedItemChangedCommand
        {
            get => new DelegateCommand<PremissionDm>((PremissionDm _selected) =>
            {
                LeftPremission = _selected;
            });
        }
        public DelegateCommand<PremissionDm> RightSelectedItemChangedCommand
        {
            get => new DelegateCommand<PremissionDm>((PremissionDm _selected) =>
            {
                RightPremission = _selected;
            });
        }
        

        public DelegateCommand ToLeft
        {
            get => new DelegateCommand(() =>
            {
                // 说明是父菜单
                if (RightPremission.Children != null || RightPremission.Id == 6)
                {
                    // 左侧有没有此菜单
                    int index = AllPremissions.ToList().FindIndex((it) => it.Id == RightPremission.Id);
                    // 已经存在
                    if (index > -1)
                    {
                        // 获取左侧中的菜单
                        PremissionDm item = AllPremissions.ElementAt(index);
                        // 向其中添加子菜单
                        RightPremission.Children.ToList().ForEach(it =>
                        {
                            int v = it.Id % 10;
                            if (v > item.Children.Count)
                            {
                                item.Children.Add(it);
                            }
                            else
                            {
                                item.Children.Insert(v - 1, it);
                            }
                        });
                    }
                    else
                    {
                        int v = RightPremission.Id % 10;
                        if (v > AllPremissions.Count)
                        {
                            AllPremissions.Add(RightPremission);
                        }
                        else
                        {
                            AllPremissions.Insert(v - 1, RightPremission);
                        }

                    }

                    RightPremissions.RemoveAt(RightPremissions.ToList().FindIndex(it => it.Id == RightPremission.Id));
                }
                // 子菜单
                else
                {
                    // 查找所选子菜单的父菜单
                    PremissionDm item = RightPremissions.ToList().Find(it => (int)(RightPremission.Id / 10) == it.Id);
                    // 查找父菜单是否在左侧
                    int index = AllPremissions.ToList().FindIndex(it => it.Id == item.Id);
                    // 存在
                    if (index > -1)
                    {
                        ObservableCollection<PremissionDm> a = AllPremissions.ElementAt(index).Children;
                        int v = RightPremission.Id % 10;
                        if (v > a.Count)
                        {
                            a.Add(RightPremission);
                        }
                        else
                        {
                            a.Insert(v - 1, RightPremission);
                        }
                        item.Children.RemoveAt(item.Children.ToList().FindIndex(it => it.Id == RightPremission.Id));

                        if (item.Children.Count == 0)
                        {
                            RightPremissions.RemoveAt(RightPremissions.ToList().FindIndex(it => it.Id == RightPremission.Id));
                        }
                    }
                    // 不存在
                    else
                    {
                        // 拷贝
                        PremissionDm item2 = DeepCopyByReflect<PremissionDm>(item);
                        ObservableCollection<PremissionDm> child = new ObservableCollection<PremissionDm>();
                        child.Add(RightPremission);
                        item2.Children = child;
                        int v = item2.Id % 10;
                        if (v > AllPremissions.Count)
                        {
                            AllPremissions.Add(item2);
                        }
                        else
                        {
                            AllPremissions.Insert(v - 1, item2);
                        }
                        item.Children.RemoveAt(item.Children.ToList().FindIndex(it => it.Id == RightPremission.Id));
                    }

                }
            });
        }

        public DelegateCommand AllToRight
        {
            get => new DelegateCommand(() =>
            {
                RightPremissions = Clone<PremissionDm>(defaultAll);
                AllPremissions.Clear();
            });
        }

        public DelegateCommand AllToLeft
        {
            get => new DelegateCommand(() =>
            {
                AllPremissions = Clone<PremissionDm>(defaultAll);
                RightPremissions.Clear();
            });
        }

        public DelegateCommand AddRole
        {
            get => new DelegateCommand(() =>
            {
                Role.Id = 0;
                Role.MachineId = ConfigurationManager.AppSettings["machineId"] ?? "DM1";
                Role.Permissions = RightPremissions.ToList();
                SqlSugarHelper.Db.Insertable<RoleDm>(Role).ExecuteCommand();
                RequestData();
            });
        }

        public DelegateCommand EditRole
        {
            get => new DelegateCommand(() =>
            {
                Role.Permissions = RightPremissions.ToList();
                SqlSugarHelper.Db.Updateable<RoleDm>(Role).ExecuteCommand();
                RequestData();
            });
        }

        //这个方法用于拦截请求,continuationCallback(true)就是不拦截，continuationCallback(false)拦截本次操作
        public void ConfirmNavigationRequest(NavigationContext navigationContext, Action<bool> continuationCallback)
        {
            continuationCallback(true);
        }


        //接收导航传过来的参数
        public void OnNavigatedTo(NavigationContext navigationContext)
        {
            //查询表格数据
            RequestData();
        }



        void RequestData()
        {
            RoleList = SqlSugarHelper.Db.Queryable<RoleDm>()
                .Where(di => di.MachineId.Equals(ConfigurationManager.AppSettings["machineId"] ?? "DM1"))
                .WhereIF(!String.IsNullOrEmpty(SearchValue), (di) => di.RoleName.Contains(SearchValue??""))
                .Select(r => r)
                .ToList()
                ;
        }

        //每次导航的时候，该实列用不用重新创建，true是不重新创建,false是重新创建
        public bool IsNavigationTarget(NavigationContext navigationContext)
        {
            return true;
        }

        //这个方法用于拦截请求
        public void OnNavigatedFrom(NavigationContext navigationContext)
        {

        }
    }
}