using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Windows;
using System.Windows.Controls;
using FurnaceUI.Views.Recipes;

namespace FurnaceUI.Controls
{
    partial class PaginationList : UserControl, INotifyPropertyChanged
    {
        #region 属性 
        public List<BoatWaferItem> SubItems { private get; set; }
        public List<BoatWaferItem> Items
        {
            get { return (List<BoatWaferItem>)GetValue(ItemsProperty); }
            set { SetValue(ItemsProperty, value); }
        }
        public static readonly DependencyProperty ItemsProperty =
            DependencyProperty.Register("Items", typeof(List<BoatWaferItem>), typeof(PaginationList),new PropertyMetadata(null, new PropertyChangedCallback(RenderUpdateByPropertyChanged)));
        public int CurrentItemIndex
        {
            get { return (int)GetValue(CurrentItemIndexProperty); }
            set { SetValue(CurrentItemIndexProperty, value); }
        }
        public static readonly DependencyProperty CurrentItemIndexProperty =
            DependencyProperty.Register("CurrentItemIndex", typeof(int), typeof(PaginationList), new PropertyMetadata(-1, new PropertyChangedCallback(RenderUpdateByPropertyChanged)));
        #endregion
        #region 页面属性
        public int PageIndex { get; set; } = 1;
        public int PageCount { get; set; }
        public int RecordCount { get; set; }
        public int PageSize
        {
            get { return (int)GetValue(PageSizeProperty); }
            set { SetValue(PageSizeProperty, value); }
        }
        public static readonly DependencyProperty PageSizeProperty =
           DependencyProperty.Register("PageSize", typeof(int), typeof(PaginationList), new PropertyMetadata(1, new PropertyChangedCallback(RenderUpdateByPropertyChanged)));

        public bool IsListEnable
        {
            get { return (bool)GetValue(IsListEnableProperty); }
            set { SetValue(IsListEnableProperty, value); }
        }
        public static readonly DependencyProperty IsListEnableProperty =
           DependencyProperty.Register("IsListEnable", typeof(bool), typeof(PaginationList), new PropertyMetadata(true, new PropertyChangedCallback(RenderUpdateByPropertyChanged)));

        public event PropertyChangedEventHandler PropertyChanged;


        #endregion

        #region 翻页命令
        public void NextPageCommand()
        {
            if (PageIndex < PageCount)
            {
                PageIndex = PageIndex + 1;
                TakePage();
            }

        }
        public void PreviousPageCommand()
        {
            if (PageIndex > 1)
            {
                PageIndex = PageIndex - 1; ;
                TakePage();
            }


        }
        public void HomePageCommand()
        {
            PageIndex = 1;
            TakePage();
        }
        public void TailPageCommand()
        {
            PageIndex = PageCount;
            TakePage();
        }
        
        #endregion
        public PaginationList()
        {
            InitializeComponent();
        }

        /// <summary>
        /// 当属性刷新的时候，进行强制更新绘图
        /// </summary>
        /// <param name="dependency"></param>
        /// <param name="e"></param>
        public static void RenderUpdateByPropertyChanged(DependencyObject dependency, DependencyPropertyChangedEventArgs e)
        {
            if (dependency is PaginationList hslThermometer)
            {
                hslThermometer.TakePage();
            }
        }
        private void TakePage()
        {
            if (PageSize <= 0 || Items == null || Items.Count<=0) return;
            PageCount = Items.Count / PageSize;
            RecordCount = Items.Count % PageSize;
            if (RecordCount > 0)
                PageCount += 1;
            if (PageIndex == PageCount)//最后一页
            {
                RecordCount = RecordCount == 0 ? PageSize : RecordCount;
                SubItems = Items.GetRange((PageIndex - 1) * PageSize, RecordCount);
            }
            else
            {
                SubItems = Items.GetRange((PageIndex - 1) * PageSize, PageSize);
            }

            SortSubItems();
            list.ItemsSource = SubItems;
            list.IsEnabled = IsListEnable;

        }
        private void SortSubItems()
        {
            BoatWaferItem[] TempList = new BoatWaferItem[SubItems.Count];
            var length = TempList.Length % 2 == 0 ? TempList.Length : TempList.Length + 1;
            for (int i = 0; i < TempList.Length; i++)
            {
                if(i%2==0)
                    TempList[i] = SubItems[i/2];
                else
                    TempList[i] = SubItems[i/2 + length / 2];
            }
           
            SubItems =new List<BoatWaferItem>(TempList);
        }
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            Button btn = sender as Button;
            switch (btn.Tag)
            {
                case "HomePage":
                    HomePageCommand();
                    break;
                case "PrePage":
                    PreviousPageCommand();
                    break;
                case "NextPage":
                    NextPageCommand();
                    break;
                case "TailPage":
                    TailPageCommand();
                    break;

            }           
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            Button btn = sender as Button;
            CurrentItemIndex = (int)btn.Tag;
        }
    }
}