using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using POSV.Entity;
using POSV.Bean;
using DevComponents.DotNetBar.Metro;
using DevComponents.DotNetBar;
using POSV.Utils;
using System.Threading.Tasks;

namespace POSV.Component
{
    [ToolboxItem(true)]
    public partial class TableX : BaseUserControl
    {
        /// <summary>
        /// 桌台数据源
        /// </summary>
        private List<Table> _dataSource = null;

        public TableX()
        {
            InitializeComponent();

            this.BackColor = Color.Transparent;
        }

        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);

            if (this.DesignMode) return;

            //当前页码
            this.PageNumber = 1;
        }

        /// <summary>
        /// 刷新界面元素
        /// </summary>
        public void RefreshUi()
        {
            if (this.itemPanel.Items.Count > 0)
            {
                var items = this.itemPanel.Items[0].SubItems;
                if (items.Count > 0)
                {
                    var lists = this._dataSource.FindAll(x => x.TableExt != null);

                    Parallel.ForEach(lists , table =>
                    {
                        if (items.Count > 0 && items.Contains(table.Id))
                        {
                            var item = items[table.Id] as MetroTileItem;

                            this.ChangedStyle(table , item);
                        }
                    });
                }
            }
        }

        public void BindDataSource(List<Table> dataSource , KeyboardAction action = KeyboardAction.None)
        {
            this._dataSource = dataSource;

            if (this._dataSource == null)
            {
                this._dataSource = new List<Table>();
            }

            //总数量
            this.TotalCount = dataSource.Count;

            //每页的显示数量
            this.PageSize =  this.Rows * this.Columns;

            //清空历史数据
            this.itemPanel.Items.Clear();

            this.itemPanel.Font = this.GetSystemFont(this.FontSize);

            //复制新的数据源，进行分页运算
            var merge = TableMerge.Merge(this.Rows , this.Columns , dataSource , false);
            
            var pager = ListPager(merge);

            ItemContainer ic = new ItemContainer();

            ic.MultiLine = true;
            ic.ItemSpacing = 0;
            ic.LayoutOrientation = eOrientation.Horizontal;

            foreach (var entity in pager)
            {
                MetroTileItem item = this.GetItemTemplate();

                item.EnableMarkup = true;

                item.Name = entity.Id;

                //绑定品类ID到Tag属性
                item.Tag = entity;

                switch (entity.Name)
                {
                    case Constant.PREV_PAGER:
                        {
                            item.Image = POSV.Properties.Resources.left;
                            item.ImageTextAlignment = System.Drawing.ContentAlignment.MiddleCenter;

                            item.TileStyle.BackColor = ColorTranslator.FromHtml(this.PagerColor);
                            item.TileStyle.BackColor2 = ColorTranslator.FromHtml(this.PagerColor);
                        }
                        break;
                    case Constant.NEXT_PAGER:
                        {
                            item.Image = POSV.Properties.Resources.right;
                            item.ImageTextAlignment = System.Drawing.ContentAlignment.MiddleCenter;

                            item.TileStyle.BackColor = ColorTranslator.FromHtml(this.PagerColor);
                            item.TileStyle.BackColor2 = ColorTranslator.FromHtml(this.PagerColor);
                        }
                        break;
                    default:
                        {
                            //绑定人数
                            item.Text = string.Format("可供{0}人",entity.Number);

                            //绑定桌名
                            item.TitleText = string.Format("{0}" , entity.Name); 
                        }
                        break;
                }

                this.ChangedStyle(entity,item);

                ic.SubItems.Add(item);
            }

            this.itemPanel.Items.Add(ic);
            this.itemPanel.Invalidate();
        }

        public void ChangedStyle(Table entity,MetroTileItem item = null)
        {
            if (entity == null || entity.TableExt == null) return;

            if(item == null)
            {
                if (this.itemPanel.Items.Count > 0)
                {
                    var items = this.itemPanel.Items[0].SubItems;
                    if (items.Count > 0 && items.Contains(entity.Id))
                    {
                        item = items[entity.Id] as MetroTileItem;
                    }
                }
            }

            if (item == null) return;

            switch (entity.TableExt.TableStatus)
            {
                case TableStatus.空闲:
                    {
                        //文字颜色
                        item.TileStyle.TextColor = ColorTranslator.FromHtml(this.TextColor0);
                        //背景颜色
                        item.TileStyle.BackColor = ColorTranslator.FromHtml(this.BackColor0);
                        item.TileStyle.BackColor2 = ColorTranslator.FromHtml(this.BackColor0);
                        //边框颜色
                        item.TileStyle.BorderColor = ColorTranslator.FromHtml(this.BackColor0);
                        item.TileStyle.BorderColor2 = ColorTranslator.FromHtml(this.BackColor0);

                        //绑定桌名
                        item.TitleText = entity.Name;

                        //绑定人数
                        item.Text = string.Format("可供{0}人" , entity.Number);


                    }
                    break;
                case TableStatus.在用:
                    {
                        //文字颜色
                        item.TileStyle.TextColor = ColorTranslator.FromHtml(this.TextColor1);
                        //背景颜色
                        item.TileStyle.BackColor = ColorTranslator.FromHtml(this.BackColor1);
                        item.TileStyle.BackColor2 = ColorTranslator.FromHtml(this.BackColor1);
                        //边框颜色
                        item.TileStyle.BorderColor = ColorTranslator.FromHtml(this.BackColor1);
                        item.TileStyle.BorderColor2 = ColorTranslator.FromHtml(this.BackColor1);

                        //绑定桌名
                        item.TitleText = entity.Name;

                        //已经过去的时间，HH:mm
                        var diff = DateTimeUtils.MinuteDiff(DateTime.Now , Convert.ToDateTime(entity.TableExt.OpenTime));
                        //绑定人数
                        item.Text = string.Format("{0}人 {1} {2}" , entity.TableExt.TableNumber , diff , Constant.CNY + "0.00");

                    }


                    break;
            }

        }

        private MetroTileItem GetItemTemplate()
        {
            MetroTileItem template = new MetroTileItem();
            template.TileStyle.PaddingLeft = template.TileStyle.PaddingRight = -2;

            template.EnableMarkup = true;
            template.OptionGroup = "Table";

            template.TileStyle.Font = this.itemPanel.Font;

            template.TileStyle.TextAlignment = DevComponents.DotNetBar.eStyleTextAlignment.Center;
            template.TileStyle.TextLineAlignment = DevComponents.DotNetBar.eStyleTextAlignment.Far;
            template.TitleTextAlignment = System.Drawing.ContentAlignment.TopCenter;

            template.TileStyle.BorderWidth = 1;
            template.TileStyle.CornerDiameter = 8;
            template.TileStyle.CornerType = eCornerType.Rounded;

            //桌号文字颜色
            template.TitleTextColor = ColorTranslator.FromHtml(this.TextColor0);

            //文字颜色
            template.TileStyle.TextColor = ColorTranslator.FromHtml(this.TextColor0);
            //背景颜色
            template.TileStyle.BackColor = ColorTranslator.FromHtml(this.BackColor0);
            template.TileStyle.BackColor2 = ColorTranslator.FromHtml(this.BackColor0);
            //边框颜色
            template.TileStyle.BorderColor = ColorTranslator.FromHtml(this.BackColor0);
            template.TileStyle.BorderColor2 = ColorTranslator.FromHtml(this.BackColor0);

            //显示大小
            template.TileSize = new Size(this.ItemWidth , this.ItemHeight);

            template.MouseDown += OnItemMouseDown;

            template.DoubleClick += OnItemDoubleClick;

            return template;
        }

        private void OnItemMouseDown(object sender , MouseEventArgs e)
        {
            MetroTileItem item = (MetroTileItem)sender;
            var table = item.Tag as Table;

            switch (table.Name)
            {
                case Constant.PREV_PAGER:
                    {
                        item.Checked = false;

                        this.PageNumber = table.Pager;

                        this.BindDataSource(this._dataSource);
                    }
                    break;
                case Constant.NEXT_PAGER:
                    {
                        item.Checked = false;

                        this.PageNumber = table.Pager;

                        this.BindDataSource(this._dataSource);
                    }
                    break;
                default:
                    {
                        item.Checked = true;

                        this.OnTableCheckedChanged(new TableEventArgs(table));
                    }
                    break;
            }
        }
        
        private void OnItemDoubleClick(object sender , EventArgs e)
        {
            MetroTileItem item = (MetroTileItem)sender;
            var table = item.Tag as Table;

            this.OnTableDoubleClick(new TableEventArgs(table));
        }
        

        public event TableEventHandler TableDoubleClick;
        protected virtual void OnTableDoubleClick(TableEventArgs e)
        {
            TableDoubleClick?.Invoke(this , e);
        }

        public event TableEventHandler TableCheckedChanged;
        protected virtual void OnTableCheckedChanged(TableEventArgs e)
        {
            TableCheckedChanged?.Invoke(this , e);
        }


        /// <summary>
        /// 分页List数据
        /// </summary>
        /// <param name="data"></param>
        /// <returns></returns>
        public List<Table> ListPager(List<Table> data)
        {
            var result = new List<Table>();

            result.AddRange(data.Skip((this.PageNumber - 1) * this.PageSize).Take(this.PageSize));

            return result;
        }


        /// <summary>
        /// 显示的高度
        /// </summary>
        public int ItemHeight { get; set; } = 70;

        /// <summary>
        /// 显示的宽度
        /// </summary>
        public int ItemWidth { get; set; } = 92;
        
        /// <summary>
        ///默认行数
        /// </summary>
        public int Rows => this.Height / this.ItemHeight;

        /// <summary>
        /// 每一行显示的数量
        /// </summary>
        public int Columns { get; set; } = 8;


        /// <summary>
        /// 字体大小
        /// </summary>
        public SystemFont FontSize { get; set; } = SystemFont.正常;

        /// <summary>
        /// 空闲状态显示颜色
        /// </summary>
        public string BackColor0 { get; set; } = ColorTranslator.ToHtml(Color.Green);

        /// <summary>
        /// 在用状态显示颜色
        /// </summary>
        public string BackColor1{ get; set; } = ColorTranslator.ToHtml(Color.OrangeRed);

        /// <summary>
        /// 分页按钮的颜色
        /// </summary>
        public string PagerColor { get; set; } = ColorTranslator.ToHtml(Color.Green);

        /// <summary>
        /// 文字显示颜色
        /// </summary>
        public string TextColor0 { get; set; } = ColorTranslator.ToHtml(Color.Black);

        /// <summary>
        /// 开台模式的文字颜色
        /// </summary>
        public string TextColor1 { get; set; } = ColorTranslator.ToHtml(Color.Blue);

        /// <summary>
        /// 每页的大小
        /// </summary>
        public int PageSize { get; private set; }

        /// <summary>
        /// 总页数
        /// </summary>
        public int PageCount => this.PageSize <= 0 ? 0 : ((this.TotalCount + this.PageSize - 1) / this.PageSize);

        /// <summary>
        /// 当前页码
        /// </summary>
        public int PageNumber { get; set; }

        /// <summary>
        /// 总数量
        /// </summary>
        public int TotalCount { get; private set; }

        //是否有上一页
        public bool HasPreviousPage
        {
            get { return PageNumber > 1; }
        }

        //是否有下一页
        public bool HasNextPage
        {
            get { return PageNumber < this.PageCount; }
        }


    }

    public delegate void TableEventHandler(object sender , TableEventArgs e);

    public class TableEventArgs : EventArgs
    {
        public Table Table;
        public TableEventArgs(Table data)
        {
            this.Table = data;
        }
    }
}