using Prism.Commands;
using Prism.Events;
using Prism.Mvvm;
using Prism.Regions;
using Prism.Services.Dialogs;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using DM_Weight.Finger;
using DM_Weight.Models;
using DM_Weight.msg;
using DM_Weight.util;

namespace DM_Weight.ViewModels
{
    public class EditUserDialogViewModel : BindableBase, IDialogAware, IRegionMemberLifetime
    {

        private readonly FingerprintUtil _fingerprintUtil;
        IEventAggregator _eventAggregator;
        public EditUserDialogViewModel(FingerprintUtil fingerprintUtil, IEventAggregator eventAggregator)
        {
            _fingerprintUtil = fingerprintUtil;
            _eventAggregator = eventAggregator;
        }

        private UserList _userList = new UserList();

        public UserList UserList
        {
            get => _userList;
            set => SetProperty(ref _userList, value);
        }

        public List<RoleDm> Roles { get; set; }

        private string _oldPass;
        public string OldPass
        {
            get => _oldPass;
            set
            {
                if (string.IsNullOrEmpty(value))
                {
                    throw new ArgumentException("请输入原密码");
                }
                if (!MD5.GetMD5Hash(value).ToLower().Equals(UserList.PassWord.ToLower()))
                {
                    throw new ArgumentException("旧密码错误");
                }
                SetProperty(ref _oldPass, value);
            }
        }
        private string _newPass;
        public string NewPass
        {
            get => _newPass; set
            {
                if (string.IsNullOrEmpty(value))
                {
                    throw new ArgumentNullException("请输入新密码");
                }
                SetProperty(ref _newPass, value);
            }
        }

        private bool _onlyPassword = false;
        private bool _editUser = true;
        public bool OnlyPassword { get => _onlyPassword; set => SetProperty(ref _onlyPassword, value); }
        public bool EditUser { get => _editUser; set => SetProperty(ref _editUser, value); }

        public event Action<IDialogResult> RequestClose;



        public bool KeepAlive => false;

        private string _title = "编辑用户";

        public string Title
        {
            get => _title;
            set => SetProperty(ref _title, value);
        }


        public DelegateCommand SaveUser
        {
            get => new DelegateCommand(() =>
            {
                try
                {

                    // 修改密码
                    if (OnlyPassword)
                    {
                        if (MD5.GetMD5Hash(OldPass).ToLower().Equals(UserList.PassWord.ToLower()))
                        {
                            // 旧密码输入正确
                            UserList.PassWord = MD5.GetMD5Hash(NewPass);
                            SqlSugarHelper.Db.Updateable<UserList>(UserList).UpdateColumns(u => new { u.PassWord }).ExecuteCommand();
                            // 关闭当前窗口
                            RequestClose?.Invoke(new DialogResult(ButtonResult.OK));
                        }
                        else
                        {

                        }
                    }
                    // 保存用户
                    else
                    {
                        if (UserList.Id > 0)
                        {
                            // 更新
                            // 没有写密码
                            if (string.IsNullOrEmpty(NewPass))
                            {
                                SqlSugarHelper.Db.Updateable<UserList>(UserList).UpdateColumns(u => new { u.Nickname, u.UserName, u.UserBarcode, u.RoleId }).ExecuteCommand();
                            }
                            // 更改了密码
                            else
                            {
                                UserList.PassWord = MD5.GetMD5Hash(NewPass);
                                SqlSugarHelper.Db.Updateable<UserList>(UserList).UpdateColumns(u => new { u.Nickname, u.UserName, u.PassWord, u.UserBarcode, u.RoleId }).ExecuteCommand();
                            }
                        }
                        else
                        {
                            UserList.PassWord = MD5.GetMD5Hash(NewPass);
                            UserList.MachineId = ConfigurationManager.AppSettings["machineId"] ?? "DM1";
                            // 插入
                            SqlSugarHelper.Db.Insertable<UserList>(UserList).InsertColumns(u => new { u.Id, u.Nickname, u.UserName, u.PassWord, u.UserBarcode, u.RoleId, u.MachineId }).ExecuteCommand();
                        }
                        RequestClose?.Invoke(new DialogResult(ButtonResult.OK));
                    }

                }
                catch (Exception ex)
                {
                    AlertMsg alertMsg = new AlertMsg
                    {
                        Message = $"保存用户信息异常{ex.Message}",
                        Type = MsgType.ERROR,
                    };
                    _eventAggregator.GetEvent<SnackbarEvent>().Publish(alertMsg);
                }
            });
        }

        void GetAllRole()
        {
            Roles = SqlSugarHelper.Db.Queryable<RoleDm>().Where(r => r.MachineId == (ConfigurationManager.AppSettings["machineId"] ?? "DM1")).OrderBy(r => r.Id).ToList();
            RaisePropertyChanged("Roles");
        }


        public DelegateCommand CancelCommand
        {
            get => new DelegateCommand(() =>
            {
                // 关闭当前窗口
                RequestClose?.Invoke(new DialogResult(ButtonResult.Cancel));
            });
        }


        public bool CanCloseDialog()
        {
            return true;
        }

        public void OnDialogClosed()
        {

        }

        public void OnDialogOpened(IDialogParameters parameters)
        {

            if (parameters.ContainsKey("EditPass"))
            {

                UserList = parameters.GetValue<UserList>("User");
                OnlyPassword = parameters.GetValue<bool>("EditPass");
                EditUser = false;
                Title = "修改密码";
            }
            else
            {
                if (parameters.ContainsKey("User"))
                {
                    UserList = parameters.GetValue<UserList>("User");
                }
                if (UserList.Id == null)
                {
                    Title = "添加用户";
                }
                GetAllRole();
            }


        }

    }
}