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;

namespace POSV.Component
{
    [ToolboxItem(true)]
    public partial class TableAreaX : BaseUserControl
    {
        /// <summary>
        /// 绑定的数据源
        /// </summary>
        private List<TableArea> _dataSource = null;

        /// <summary>
        /// 当前选择的项
        /// </summary>
        private MetroTileItem _selectedItem = null;

        public TableAreaX()
        {
            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;

            this.Height = (this.Visible ? this.Rows * this.ItemHeight : 0);

            this.InitTableArea();

            this.BindDataSource();
        }

        private void InitTableArea()
        {
            try
            {
                this._dataSource = new List<TableArea>();

                //当前的桌台
                using (var db = Global.Instance.OpenDataBase)
                {
                    this._dataSource = db.Query<TableArea>().ToList();
                } 
            }
            catch (Exception ex)
            {
                LOGGER.Error(ex , "加载桌台异常");
            }
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            Rectangle rect = new Rectangle(0, 0, this.Width, this.Height);
            ControlPaint.DrawBorder(e.Graphics, rect, Color.Transparent, ButtonBorderStyle.Solid);
        }

        private void BindDataSource()
        {
            try
            {
                if (this._dataSource == null)
                {
                    return;
                }

                if(this._dataSource.Count > 0 && !this._dataSource.Exists(x=>x.No.Equals(Constant.ALL_TABLE_TAG)))
                {
                    var all = new TableArea();

                    all.Id = IdWorkerUtils.Instance.NextId();
                    all.No = Constant.ALL_TABLE_TAG;
                    all.Name = "全部";

                    this._dataSource.Insert(0 , all);
                }
                //总记录
                this.TotalCount = this._dataSource.Count;
                //每页的显示数量
                this.PageSize = this.Rows * this.Columns;

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

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

                var pager = this.ListPager(this._dataSource);

                ItemContainer ic = new ItemContainer();

                ic.MultiLine = (this.Rows > 1);
                ic.ItemSpacing = 2;
                ic.LayoutOrientation = eOrientation.Horizontal;

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

                    item.Name = entity.Id;

                    item.Checked = false;

                    //绑定到Tag属性
                    item.Tag = entity;

                    //绑定编码到TitleText属性
                    //item.TitleText = entity.No;

                    //绑定名称到Text属性
                    item.Text = entity.Name;

                    ic.SubItems.Add(item);

                    if(this._selectedItem == null)
                    {
                        this._selectedItem = item;
                    }
                }

                this.itemPanel.Items.Add(ic);
                this.itemPanel.Invalidate();
            }
            catch (Exception ex)
            {
                LOGGER.Error(ex, "绑定桌台数据源异常");
            }
            finally
            {
                if(this._selectedItem != null)
                {
                    //选中情况下的文字颜色
                    this._selectedItem.TileStyle.TextColor = ColorTranslator.FromHtml(this.TextColor2);
                    this._selectedItem.TitleTextColor = ColorTranslator.FromHtml(this.TextColor2);
                    //选中情况下的背景颜色
                    this._selectedItem.TileStyle.BackColor = ColorTranslator.FromHtml(this.BackColor2);
                    this._selectedItem.TileStyle.BackColor2 = ColorTranslator.FromHtml(this.BackColor2);
                    //边框颜色
                    this._selectedItem.TileStyle.BorderColor = ColorTranslator.FromHtml(this.BackColor2);
                    this._selectedItem.TileStyle.BorderColor2 = ColorTranslator.FromHtml(this.BackColor2);
                    
                }
            }
        }

        /// <summary>
        /// 获取当前选择的桌台区域
        /// </summary>
        public TableArea SelectedTableArea => this._selectedItem.Tag as TableArea;
        

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

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

            return result;
        }

        private MetroTileItem GetItemTemplate()
        {
            MetroTileItem template = new MetroTileItem();

            template.TileStyle.PaddingLeft = template.TileStyle.PaddingRight = -2;

            template.EnableMarkup = true;
            template.OptionGroup = "TableX";
            template.CheckBehavior = eMetroTileCheckBehavior.LeftMouseButtonClick;

            template.TileStyle.Font = itemPanel.Font;
            //对齐方式
            template.TileStyle.TextAlignment = DevComponents.DotNetBar.eStyleTextAlignment.Center;
            template.TileStyle.TextLineAlignment = DevComponents.DotNetBar.eStyleTextAlignment.Center;
            //正常情况下的文字颜色
            template.TileStyle.TextColor = ColorTranslator.FromHtml(this.TextColor1);
            template.TitleTextColor = ColorTranslator.FromHtml(this.TextColor1);
            //正常情况下的背景颜色
            template.TileStyle.BackColor = ColorTranslator.FromHtml(this.BackColor1);
            template.TileStyle.BackColor2 = ColorTranslator.FromHtml(this.BackColor1);
            //无边框
            template.TileStyle.BorderColor = Color.Transparent;
            template.TileStyle.BorderColor2 = Color.Transparent;

            template.TileStyle.BorderWidth = 1;
            template.TileStyle.CornerDiameter = 6;
            switch (this.TableAreaCornerType)
            {
                case CornerType.默认:
                    {
                        template.TileStyle.CornerType = eCornerType.Square;
                    }
                    break;
                case CornerType.圆角:
                    {
                        template.TileStyle.CornerType = eCornerType.Rounded;                        
                    }
                    break;
                case CornerType.棱角:
                    {
                        template.TileStyle.CornerType = eCornerType.Diagonal;
                    }
                    break;
            }

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

            return template;
        }
        
        private void OnMouseDown(object sender, MouseEventArgs e)
        {
            MetroTileItem current = (MetroTileItem)sender;
            current.Checked = false;

            foreach (BaseItem item in current.Parent.SubItems)
            {
                if (item == current)
                {
                    continue;
                }
                    
                MetroTileItem b = item as MetroTileItem;
                if (b != null && b.OptionGroup == current.OptionGroup)
                {
                    //正常情况下的文字颜色
                    b.TileStyle.TextColor = ColorTranslator.FromHtml(this.TextColor1);
                    b.TitleTextColor = ColorTranslator.FromHtml(this.TextColor1);
                    //正常情况下的背景颜色
                    b.TileStyle.BackColor = ColorTranslator.FromHtml(this.BackColor1);
                    b.TileStyle.BackColor2 = ColorTranslator.FromHtml(this.BackColor1);
                    //无边框
                    b.TileStyle.BorderColor = Color.Transparent;
                    b.TileStyle.BorderColor2 = Color.Transparent;
                }
            }

            this._selectedItem = current;

            //选中情况下的文字颜色
            current.TileStyle.TextColor = ColorTranslator.FromHtml(this.TextColor2);
            current.TitleTextColor = ColorTranslator.FromHtml(this.TextColor2);
            //选中情况下的背景颜色
            current.TileStyle.BackColor = ColorTranslator.FromHtml(this.BackColor2);
            current.TileStyle.BackColor2 = ColorTranslator.FromHtml(this.BackColor2);
            //边框颜色
            current.TileStyle.BorderColor = ColorTranslator.FromHtml(this.BackColor2);
            current.TileStyle.BorderColor2 = ColorTranslator.FromHtml(this.BackColor2);


            OnTableAreaCheckedChanged(new TableAreaEventArgs((TableArea)current.Tag));
        }



        /// <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; }

        public int Rows { get; } = 1;

        public int Columns { get; } = 7;

        /// <summary>
        /// 宽度
        /// </summary>
        public int ItemWidth { get; } = 90;

        /// <summary>
        /// 高度
        /// </summary>
        public int ItemHeight { get; } = 45;

        /// <summary>
        /// 正常背景颜色
        /// </summary>
        public string BackColor1 { get; set; } = ColorTranslator.ToHtml(Color.Transparent);

        /// <summary>
        /// 选中后背景颜色
        /// </summary>
        public string BackColor2 { get; set; } = ColorTranslator.ToHtml(Color.DimGray);

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

        /// <summary>
        /// 正常文字颜色
        /// </summary>
        public string TextColor1 { get; set; } = ColorTranslator.ToHtml(Color.Black);

        /// <summary>
        /// 选中的颜色
        /// </summary>
        public string TextColor2 { get; set; } = ColorTranslator.ToHtml(Color.White);

        /// <summary>
        /// 显示样式
        /// </summary>
        public CornerType TableAreaCornerType { get; set; } = CornerType.圆角;


        public event TableAreaEventHandler TableAreaCheckedChanged;
        protected virtual void OnTableAreaCheckedChanged(TableAreaEventArgs e)
        {
            TableAreaCheckedChanged?.Invoke(this, e);
        }

    }

    public delegate void TableAreaEventHandler(object sender, TableAreaEventArgs e);

    public class TableAreaEventArgs : EventArgs
    {
        public TableArea Data;
        public TableAreaEventArgs(TableArea data)
        {
            this.Data = data;
        }
    }
}