using CapMachine.Core;
using CapMachine.Model;
using CapMachine.Wpf.Dtos;
using CapMachine.Wpf.Services;
using Masuit.Tools;
using Prism.Commands;
using Prism.Events;
using Prism.Regions;
using Prism.Services.Dialogs;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace CapMachine.Wpf.ViewModels
{
    public class UserManageViewModel : NavigationViewModel
    {
        public UserManageViewModel(IEventAggregator eventAggregator, IFreeSql freeSql, ConfigService configService, IDialogService dialogService, IRegionManager regionManager)
        {
            //事件服务
            _EventAggregator = eventAggregator;
            FreeSql = freeSql;
            ConfigService = configService;
            DialogService = dialogService;
            RegionManager = regionManager;
            CurUserDto = new UserDto() { IsEnable = true };
        }
        private IEventAggregator _EventAggregator { get; set; }
        public IFreeSql FreeSql { get; }
        public ConfigService ConfigService { get; }
        public IDialogService DialogService { get; }
        public IRegionManager RegionManager { get; }



        /// <summary>
        /// 当前用户
        /// </summary>
        public UserDto CurUserDto { get; set; }


        private DelegateCommand _LoginCmd;
        /// <summary>
        /// 用户登录命令
        /// </summary>
        public DelegateCommand LoginCmd
        {
            set
            {
                _LoginCmd = value;
            }
            get
            {
                if (_LoginCmd == null)
                {
                    _LoginCmd = new DelegateCommand(() => LoginCmdMethod());
                }
                return _LoginCmd;
            }
        }
        /// <summary>
        /// 用户登录信息
        /// </summary>
        /// <exception cref="NotImplementedException"></exception>
        private void LoginCmdMethod()
        {
            if (string.IsNullOrEmpty(CurUserDto.Name))
            {
                MessageBox.Show("用户为空");
                return;
            }
            if (string.IsNullOrEmpty(CurUserDto.Password))
            {
                MessageBox.Show("密码为空");
                return;
            }

            var ListUser = FreeSql.Select<User>().Where(a => a.Name == CurUserDto.Name!.Trim() && a.IsEnable == true).ToList();
            if (ListUser != null && ListUser.Count() > 0)
            {
                if (ListUser.FirstOrDefault().Password == CurUserDto.Password.Trim())
                {
                    MessageBox.Show("登录成功！", "提示");

                    var loginUser = ListUser.FirstOrDefault();
                    CurUserDto.Id = loginUser.Id;
                    CurUserDto.Name = loginUser.Name;
                    CurUserDto.Level = loginUser.Level;
                    CurUserDto.IsEnable = loginUser.IsEnable;
                    CurUserDto.Password = "";
                    ConfigService.CurUserDto = CurUserDto;
                    ConfigService.IsUserLoggedIn = true;
                    _UserManageCmd?.RaiseCanExecuteChanged();
                    RegionManager.RequestNavigate("MainViewContentRegion", "MonitorView");

                }
                else
                {
                    ConfigService.IsUserLoggedIn = false;
                    _UserManageCmd?.RaiseCanExecuteChanged();
                    MessageBox.Show("密码错误！", "提示");
                }
            }
            else
            {
                ConfigService.IsUserLoggedIn = false;
                _UserManageCmd?.RaiseCanExecuteChanged();
                MessageBox.Show("当前用户不存在！", "提示");
            }

        }


        //UserManageCmd

        private DelegateCommand _UserManageCmd;
        /// <summary>
        /// 用户登录命令
        /// </summary>
        public DelegateCommand UserManageCmd
        {
            set
            {
                _UserManageCmd = value;
            }
            get
            {
                if (_UserManageCmd == null)
                {
                    _UserManageCmd = new DelegateCommand(() => UserManageCmdMethod(), () => CanUserManage());
                }
                return _UserManageCmd;
            }
        }

        /// <summary>
        /// 判断当前用户是否可以进行用户管理
        /// </summary>
        /// <returns>true可管理，false不可管理</returns>
        private bool CanUserManage()
        {
            return ConfigService.IsUserLoggedIn &&
                   ConfigService.CurUserDto != null &&
                   ConfigService.CurUserDto.Level == "管理员";
        }

        /// <summary>
        /// 用户管理
        /// </summary>
        /// <exception cref="NotImplementedException"></exception>
        private void UserManageCmdMethod()
        {
            if (!ConfigService.IsUserLoggedIn)
            {
                MessageBox.Show("请先登录后再进行用户管理！", "提示");
                return;
            }

            if (ConfigService.CurUserDto != null && ConfigService.CurUserDto.Level == "管理员")
            {
                ShowDialogExpInfo();
            }
            else
            {
                MessageBox.Show("登录的管理员才有权限编辑用户信息！", "提示");
            }
        }

        private void ShowDialogExpInfo()
        {
            //弹窗
            DialogService.ShowDialog("DialogUserView", new DialogParameters() { { "Name", "" } }, (par) =>
            {
                if (par.Result == ButtonResult.OK)
                {
                    //用户信息
                    //var ListChartTabGroupDto = par.Parameters.GetValue<ExpInfoDto>("ReturnValue");


                }
                else if (par.Result == ButtonResult.Cancel)
                {
                    //取消

                }

            });
        }

        /// <summary>
        /// 导航到当前页面时刷新用户管理按钮状态
        /// </summary>
        /// <param name="navigationContext">导航上下文</param>
        public override void OnNavigatedTo(NavigationContext navigationContext)
        {
            _UserManageCmd?.RaiseCanExecuteChanged();
            base.OnNavigatedTo(navigationContext);
        }
    }
}