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

namespace DM_Weight.ViewModels
{
    public class OrderTakeDrugWindowViewModel : BindableBase, IConfirmNavigationRequest, IRegionMemberLifetime
    {

        private int _pageNum = 1;
        public int PageNum
        {
            get => _pageNum;
            set
            {
                SetProperty(ref _pageNum, value);
                RequestData();
            }
        }

        private int _pageCount = 1;
        public int PageCount
        {
            get => _pageCount;
            set
            {
                SetProperty(ref _pageCount, value);
            }
        }

        private int _pageSize = 8;
        public int PageSize
        {
            get => _pageSize;
            set
            {
                SetProperty(ref _pageSize, value);
            }
        }

        private int _totalCount = 0;
        public int TotalCount
        {
            get => _totalCount;
            set
            {
                SetProperty(ref _totalCount, value);
            }
        }


        IDialogService _dialogService;
        IEventAggregator _eventAggregator;

        private DelegateCommand _rowSelected;

        public DelegateCommand RowSelected => _rowSelected ??= new DelegateCommand(OpenOrderDialog);

        public OrderTakeDrugWindowViewModel(IDialogService DialogService, IEventAggregator eventAggregator)
        {
            _dialogService = DialogService;
            _eventAggregator = eventAggregator;
        }

        public static List<OrderTakeSelect> StaticOrderTakeSelects = new()
        {
            new OrderTakeSelect
            {
                Code = "OrderNo",
                Name = "处方号"
            },
            new OrderTakeSelect
            {
                Code = "PatientId",
                Name = "患者编号"
            }
        };

        private List<OrderTakeSelect> _orderTakeSelects = StaticOrderTakeSelects;

        public List<OrderTakeSelect> OrderTakeSelects
        {
            get { return _orderTakeSelects; }
            set
            {
                SetProperty(ref _orderTakeSelects, value);
            }
        }

        private OrderTakeSelect _selectedItem = StaticOrderTakeSelects[0];
        /// <summary>
        /// 查询条件 查询字段
        /// </summary>
        public OrderTakeSelect SelectedItem
        {
            get { return _selectedItem; }
            set
            {
                SetProperty(ref _selectedItem, value);
                RequestData();
            }
        }

        private OrderInfo? _selectedOrder;

        public OrderInfo? SelectedOrder
        {
            get { return _selectedOrder; }
            set
            {
                SetProperty(ref _selectedOrder, value);

                //OpenOrderDialog();
            }
        }


        private string _orderDate = DateTime.Now.ToString("yyyy-MM-dd");
        /// <summary>
        /// 查询条件  处方日期
        /// </summary>
        public string OrderDate
        {
            get { return _orderDate; }
            set
            {
                if (!String.IsNullOrEmpty(value))
                {
                    SetProperty(ref _orderDate, DateTime.Parse(value).ToString("yyyy-MM-dd"));
                }
                else
                {
                    SetProperty(ref _orderDate, value);
                }

                RequestData();
            }
        }

        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();
            }
        }

        private List<OrderInfo> _orderInfos = new();

        public List<OrderInfo> OrderInfos { get { return _orderInfos; } set { SetProperty(ref _orderInfos, value); } }

        public bool KeepAlive => false;

        public async void OpenOrderDialog()
        {
            if (SelectedOrder != null && SelectedOrder.DmStatus == 0 && SelectedOrder.CancelFlag == 0 && SelectedOrder.HisDispFlag == 0)
            {
                // 此处延时1毫秒，等待页面渲染
                await Task.Delay(TimeSpan.FromMilliseconds(1));
                DialogParameters dialogParameters = new DialogParameters();
                dialogParameters.Add("orderInfo", SelectedOrder);
                DialogServiceExtensions.ShowDialogHost(_dialogService, "OrderTakeDialog", dialogParameters, DoDialogResult, "RootDialog");

            }

        }

        private void DoDialogResult(IDialogResult dialogResult)
        {
            // 委托   被动执行     被子窗口执行
            // dialogResult  第一方面可以拿到任意参数   第二方面   可判断关闭状态
            //if(dialogResult.Result == ButtonResult.OK)
            //{
            SelectedOrder = null;
            RequestData();
            //}
            //MessageBox.Show("返回值：" + dialogResult.Result.ToString());
        }


        //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);
        }

        public DelegateCommand QueryCommand
        {
            get => new DelegateCommand(() =>
            {
                RequestData();
            });
        }

        public void RequestData()
        {
            OrderInfos.Clear();
            int totalCount = 0;
            //string SearchValue = null;
            //if (SearchValue != null)
            //{
            //    strSearchValue = SearchValue.Trim().Replace("\r", "");
            //}
            List<OrderInfo> queryData = SqlSugarHelper.Db.Queryable<OrderInfo>()
                .InnerJoin<OrderDetail>((oi, od) => oi.OrderNo == od.OrderNo)
                .InnerJoin(SqlSugarHelper.Db.Queryable<ChannelStock>().Where(cs => cs.DrawerType == 1).Where(cs => cs.MachineId.Equals(ConfigurationManager.AppSettings["machineId"] ?? "DM1")).GroupBy(cs => cs.DrugId), (oi, od, t) => od.DrugId == t.DrugId)
                .WhereIF(OrderDate != null, oi => oi.OrderDate.ToString("yyyy-MM-dd") == OrderDate)
                .WhereIF(!String.IsNullOrEmpty(SearchValue) && SelectedItem.Code.Equals("OrderNo"), oi => oi.OrderNo == SearchValue)
                .WhereIF(!String.IsNullOrEmpty(SearchValue) && SelectedItem.Code.Equals("PatientId"), oi => oi.PatientId == SearchValue)
                .WhereIF(!String.IsNullOrEmpty(ConfigurationManager.AppSettings["storage"]), oi => oi.Pharmacy == ConfigurationManager.AppSettings["storage"])
                .Where(oi => oi.DmStatus == 0)
                .Where(oi => oi.HisDispFlag == 0)
                .Where(oi => oi.CancelFlag == 0)
                .Where(oi=>oi.Pharmacy.Equals(ConfigurationManager.AppSettings["storage"] ?? ""))
                .GroupBy(oi => oi.OrderDate)
                .Select(oi => oi)
                .ToPageList(PageNum, PageSize, ref totalCount);
            //.ToList();
            OrderInfos = queryData;
            TotalCount = totalCount;
            PageCount = (int)Math.Ceiling((double)TotalCount / PageSize);
        }

        //接收导航传过来的参数  现在是在此处初始化了表格数据
        public void OnNavigatedTo(NavigationContext navigationContext)
        {
            _eventAggregator.GetEvent<PortUtilEvent>().Subscribe(DoMyPrismEvent);
            RequestData();
        }

        //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)
        {

            // 取消消息订阅
            _eventAggregator.GetEvent<PortUtilEvent>().Unsubscribe(DoMyPrismEvent);
        }

        void DoMyPrismEvent(DeviceMsg msg)
        {
            if (msg.EventType == EventType.CODESCAN)
            {
                SearchValue = msg.Code;
            }

        }
    }
}