using Prism.Commands;
using Prism.Events;
using Prism.Ioc;
using Prism.Mvvm;
using Prism.Regions;
using Prism.Services.Dialogs;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using TeamAAS_VP.Events;
using TeamAAS_VP.Core;
using TeamAAS_VP.Models;

namespace TeamAAS_VP.ViewModels.Product
{
    public class ProductDescriptionViewModel : BindableBase
    {
        IRegionManager _regionManager;
        IEventAggregator _eventAggregator;
        IContainerProvider _container;
        IDialogService _dialogService;
        ProductsViewModel productsViewModel;
        #region 属性

        private ProductModel _SelectProduct;

        /// <summary>
        /// 选中的产品
        /// </summary>
        public ProductModel SelectProduct
        {
            get { return _SelectProduct; }
            set { SetProperty(ref _SelectProduct, value); }
        }

        #endregion

        #region 命令
        private DelegateCommand _NextCommand;
        public DelegateCommand NextCommand =>
            _NextCommand ?? (_NextCommand = new DelegateCommand(ExecuteNextCommand));

        private DelegateCommand _BackCommand;
        public DelegateCommand BackCommand =>
            _BackCommand ?? (_BackCommand = new DelegateCommand(ExecuteBackCommand));

        private DelegateCommand _LoadedCommand;
        public DelegateCommand LoadedCommand =>
            _LoadedCommand ?? (_LoadedCommand = new DelegateCommand(ExecuteLoadedCommand));

        
        #endregion

        #region 事件

        #endregion

        public ProductDescriptionViewModel(IRegionManager regionManager, IEventAggregator ea, IContainerProvider container, IDialogService dialogService)
        {
            _regionManager = regionManager;
            _eventAggregator = ea;
            _container = container;
            _dialogService = dialogService;
            //订阅权限登录事件
            _eventAggregator.GetEvent<UserLoginNotification>().Subscribe(LoginChange);

            productsViewModel = _container.Resolve<ProductsViewModel>();
            SelectProduct = productsViewModel.SelectProduct;
        }

        #region 方法

        /// <summary>
        /// 下一步
        /// </summary>
        void ExecuteNextCommand()
        {
            _regionManager.RequestNavigate("ProductRegionContext", "ProductProcessManage");
        }

        void ExecuteBackCommand()
        {
            _regionManager.RequestNavigate("ProductRegionContext", "ProductHome");
        }

        void ExecuteLoadedCommand()
        {
            if (_container.Resolve<Management>().CurrentUser.userPart == Enums.UserPart.Operator)
            {
                IsAllowEdit = false;
            }
            else
            {
                IsAllowEdit = true;
            }

            productsViewModel = _container.Resolve<ProductsViewModel>();
            SelectProduct = productsViewModel.SelectProduct;
        }
        #endregion

        private bool _IsAllowEdit = false;

        public bool IsAllowEdit
        {
            get { return _IsAllowEdit; }
            set { SetProperty(ref _IsAllowEdit, value); }
        }

        private void LoginChange(Models.User user)
        {
            if (user.userPart == Enums.UserPart.Operator)
            {
                IsAllowEdit = false;
            }
            else
            {
                IsAllowEdit = true;
            }
        }
    }
}