using InSituLaboratory.Base;
using InSituLaboratory.Entities;
using InSituLaboratory.IService;
using InSituLaboratory.Models;
using Prism.Events;
using Prism.Regions;
using Prism.Services.Dialogs;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace InSituLaboratory.ViewModels.Pages
{
    public class MenuManagementViewModel : ViewModelBase
    {

        IMenuService _menuService;
        IDialogService _dialogService;
        IEventAggregator _eventAggregator;
        public MenuManagementViewModel(IRegionManager regionManager, IMenuService menuService, IDialogService dialogService, IEventAggregator eventAggregator) : base(regionManager)
        {
            PageTitle = "菜单数据维护";

            _menuService = menuService;
            _dialogService = dialogService;
            _eventAggregator = eventAggregator;

            Refresh();
        }

        public ObservableCollection<MenuItemModel> Menus { get; set; } =
          new ObservableCollection<MenuItemModel>();
        List<Entities.SysMenu> origMenus;

        string _searchKey;

        //搜索 刷新
        public override void Refresh()
        {
            Menus.Clear();
            origMenus = _menuService.GetMenuList(SearchKey).ToList();
            MenuHelper.FillMenus(Menus, null, origMenus);
        }

        //新建 编辑菜单
        public override void DoModify(object model)
        {
            DialogParameters ps = new DialogParameters();
            ps.Add("model", model);
            _dialogService.ShowDialog("ModifyMenuView", ps, result =>
            {
                // 判断子窗口的返回状态，如果OK，刷新当前页面，否则不管
                if (result.Result == ButtonResult.OK)
                {
                    this.Refresh();

                    //通知左侧树状图菜单变化
                    _eventAggregator.GetEvent<RefreshMenuEvent>().Publish();
                }
            });
        }

        /// <summary>
        /// 删除
        /// </summary>
        /// <param name="model"></param>
        public override void DoDelete(object model)
        {
            try
            {
                if (MessageBox.Show("是否确定删除此项？", "提示", MessageBoxButton.YesNo) == MessageBoxResult.Yes)
                {
                    //物理删除
                    _menuService.Delete<SysMenu>((model as MenuItemModel).MenuId);

                    //逻辑删除
                    //通过特定字段进行数据过滤 
                    //以下方法存在问题，菜单列表刷新需要条件过滤
                    //var entity = _menuService.Find<SysMenu>((model as MenuItemModel).MenuId);
                    //entity.State = 0;
                    //_menuService.Update<SysMenu>(entity);

                    MessageBox.Show("删除完成！", "提示");

                    this.Refresh();

                    _eventAggregator.GetEvent<RefreshMenuEvent>().Publish();
                }

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "提示");
            }
        }
    }
}