using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
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 log4net.Repository.Hierarchy;
using log4net;

namespace DM_Weight.ViewModels
{
    public class DrugListWindowViewModel : 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);
            }
        }

        private List<DrugInfo> _drugInfos;
        public List<DrugInfo> DrugInfos
        {
            get { return _drugInfos; }
            set { SetProperty(ref _drugInfos, value); }
        }

        private DrugInfo _selectedDrug = new();
        public DrugInfo SelectedDrug
        {
            get { return _selectedDrug; }
            set
            {

                if (value != null)
                {
                    SetProperty(ref _selectedDrug, value);
                    GetManuNos();
                }
                else
                {
                    SetProperty(ref _selectedDrug, new());
                    Manunos = null;
                }

            }
        }
        public static List<OrderTakeSelect> StaticSelects = new()
        {
            new OrderTakeSelect
            {
                Code = "DrugName",
                Name = "药品名称"
            },
            new OrderTakeSelect
            {
                Code = "PyCode",
                Name = "拼音码"
            },
            new OrderTakeSelect
            {
                Code = "DrugBarcode",
                Name = "药品条码"
            },
            new OrderTakeSelect
            {
                Code = "DrugId",
                Name = "药品编码"
            }
        };

        private List<OrderTakeSelect> _selects = StaticSelects;

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

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

        private DrugManuNo _selectedManuno = new DrugManuNo();
        public DrugManuNo SelectedManuno
        {
            get { return _selectedManuno; }
            set { SetProperty(ref _selectedManuno, value ?? new()); }
        }

        public bool KeepAlive => false;


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

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

                    //SelectedDrug.DrugId = 0;
                    SqlSugarHelper.Db.Insertable(SelectedDrug).ExecuteCommand();
                    RequestData();
                }
                catch (Exception ex)
                {
                    ILog logger = LogManager.GetLogger(typeof(DrugListWindowViewModel));
                    logger.Info($"添加数据异常：{ex.ToString()}");
                    return;
                }
            });
        }

        public DelegateCommand EditDrugCommand
        {
            get => new DelegateCommand(() =>
            {
                SqlSugarHelper.Db.Updateable(SelectedDrug).UpdateColumns(d => new { d.DrugName, d.Manufactory, d.PyCode, d.PackUnit, d.MaxStock, d.DrugSpec }).ExecuteCommand();
                RequestData();
            }, () => SelectedDrug.DrugId is not null).ObservesProperty(() => SelectedDrug);
        }

        public DelegateCommand AddManuCommand
        {
            get => new DelegateCommand(() =>
            {
                if (!string.IsNullOrEmpty(SelectedManuno.EffDate) && !string.IsNullOrEmpty(SelectedManuno.ManuNo))
                {
                    SelectedManuno.Id = Guid.NewGuid().ToString();
                    SelectedManuno.DrugId = SelectedDrug.DrugId.ToString();
                    SelectedManuno.EffDate = DateTime.Parse(SelectedManuno.EffDate).ToString("yyyy-MM-dd");
                    SqlSugarHelper.Db.Insertable(SelectedManuno).ExecuteCommand();
                    GetManuNos();
                }

            }, () => SelectedDrug.DrugId is not null).ObservesProperty(() => SelectedDrug);
        }

        public DelegateCommand EditManuCommand
        {
            get => new DelegateCommand(() =>
            {
                SelectedManuno.EffDate = DateTime.Parse(SelectedManuno.EffDate).ToString("yyyy-MM-dd");
                SqlSugarHelper.Db.Updateable(SelectedManuno).UpdateColumns(m => new { m.ManuNo, m.EffDate }).ExecuteCommand();
                GetManuNos();
            }, () => !string.IsNullOrEmpty(SelectedManuno.DrugId)).ObservesProperty(() => SelectedManuno);
        }


        //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);
        }


        //接收导航传过来的参数
        public void OnNavigatedTo(NavigationContext navigationContext)
        {
            //查询表格数据
            RequestData();
        }

        void GetManuNos()
        {
            Manunos = SqlSugarHelper.Db.Queryable<DrugManuNo>()
                .WhereIF(SelectedDrug != null, (di) => di.DrugId.Equals(SelectedDrug.DrugId))
                .Select(di => di)
                .ToList();
        }

        void RequestData()
        {
            int totalCount = 0;
            DrugInfos = SqlSugarHelper.Db.Queryable<DrugInfo>()
                .WhereIF(!String.IsNullOrEmpty(SearchValue) && SelectedItem.Code.Equals("DrugId"), (di) => di.DrugId.ToString().Contains(SearchValue))
                .WhereIF(!String.IsNullOrEmpty(SearchValue) && SelectedItem.Code.Equals("DrugName"), (di) => di.DrugName.Contains(SearchValue))
                .WhereIF(!String.IsNullOrEmpty(SearchValue) && SelectedItem.Code.Equals("PyCode"), (di) => di.PyCode.Contains(SearchValue))
                .WhereIF(!String.IsNullOrEmpty(SearchValue) && SelectedItem.Code.Equals("DrugBarcode"), (di) => di.DrugBarcode.Contains(SearchValue))
                .Select(di => di)
                .ToPageList(PageNum, PageSize, ref totalCount)
            ;
            TotalCount = totalCount;
            PageCount = (int)Math.Ceiling((double)TotalCount / PageSize);
        }

        //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)
        {

        }
    }
}