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 DevComponents.DotNetBar.Metro;
using POSV.MessageEvent;
using DevComponents.DotNetBar;
using POSV.ShoppingCart;

namespace POSV.Business
{
    public partial class ProductCouponPanelEx : AbstractFlyoutPanelEx
    {

        /// <summary>
        /// 选中行数据
        /// </summary>
        private readonly OrderItem _orderItem = null;

        /// <summary>
        /// 规格数据源
        /// </summary>
        private List<StoreProductCoupon> _storeProductCouponsList = null;

        /// <summary>
        /// 键盘、方向键
        /// </summary>
        private KeyboardAction _action = KeyboardAction.None;

        /// <summary>
        /// 当前焦点索引
        /// </summary>
        private int _index = 0;

        /// <summary>
        /// 当前焦点单品
        /// </summary>
        private MetroTileItem _curr = null;


        public ProductCouponPanelEx(OrderItem item)
        {
            InitializeComponent();

            this._orderItem = item;

            //规格键盘通知事件
            MsgEvent.RemoveListener(Constant.SPEC_KEYBOARD_NOTIFY, this.SpecKeyboardEventNotify);
            MsgEvent.Receive(Constant.SPEC_KEYBOARD_NOTIFY, this.SpecKeyboardEventNotify);

        }

        protected void SpecKeyboardEventNotify(object sender, MsgEventArgs args)
        {
            if (args != null && args.Data != null)
            {
                Enum.TryParse<KeyboardAction>(args.Data.ToString(), out this._action);
                switch (this._action)
                {
                    case KeyboardAction.Left:
                        {
                            if (this.itemPanel.Items.Count > 0)
                            {
                                var container = this.itemPanel.Items[0] as ItemContainer;
                                int subItems = container.SubItems.Count;

                                //只有一个单品
                                if (subItems == 1)
                                {
                                    //当前操作的
                                    this._index = 0;
                                    this._curr = container.SubItems[this._index] as MetroTileItem;

                                    this.UpdateSelectedStyle(this._curr);
                                }

                                if (this._index - 1 >= 0)
                                {
                                    //当前操作的，重置样式
                                    var focus = container.SubItems[this._index] as MetroTileItem;
                                    this.ResetMetroTileItemStyle(focus);

                                    //当前操作的
                                    this._index = this._index - 1;
                                    this._curr = container.SubItems[this._index] as MetroTileItem;

                                    this.UpdateSelectedStyle(this._curr);
                                }
                            }
                        }
                        break;
                    case KeyboardAction.Right:
                        {
                            if (this.itemPanel.Items.Count > 0)
                            {
                                var container = this.itemPanel.Items[0] as ItemContainer;
                                int subItems = container.SubItems.Count;

                                //只有一个单品
                                if (subItems == 1)
                                {
                                    //当前操作的
                                    this._index = 0;
                                    this._curr = container.SubItems[this._index] as MetroTileItem;

                                    this.UpdateSelectedStyle(this._curr);
                                }

                                if (this._index + 1 < subItems)
                                {
                                    //重置当前样式
                                    var focus = container.SubItems[this._index] as MetroTileItem;
                                    this.ResetMetroTileItemStyle(focus);

                                    //当前操作的
                                    this._index = this._index + 1;
                                    this._curr = container.SubItems[this._index] as MetroTileItem;

                                    this.UpdateSelectedStyle(this._curr);
                                }
                            }
                        }
                        break;
                    case KeyboardAction.Enter:
                        {
                            if (this._curr != null)
                            {
                                LOGGER.Info(">>>>>>" + this._curr.Text);

                                LOGGER.Info(">>>>>>" + this._curr.DisplayRectangle);

                                LOGGER.Info(">>>>>>" + this._curr.Bounds);

                                LOGGER.Info(">>>>>>" + this.Parent);

                                LOGGER.Info(">>>>>>" + this);

                                var r = this.RectangleToScreen(this.DisplayRectangle);

                                var e = new MouseEventArgs(MouseButtons.Left, 1, r.Left + 5, r.Top + 5, 0);

                                this.TileItemMouseDown(this._curr, e);
                            }
                        }
                        break;
                }
            }
        }

        public void ResetMetroTileItemStyle(MetroTileItem item)
        {
            //背景颜色
            item.TileColor = eMetroTileColor.Coffee;
            //去除边框颜色
            item.TileStyle.BorderColor = Color.Transparent;
            item.TileStyle.BorderColor2 = Color.Transparent;
        }

        public void UpdateSelectedStyle(MetroTileItem item)
        {
            //背景颜色
            item.TileColor = eMetroTileColor.DarkGreen;

            item.TileStyle.BorderColor = Color.Transparent;
            item.TileStyle.BorderColor2 = Color.Transparent;
        }

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

            this.SetStyle(ControlStyles.Selectable, true);

            if (this.DesignMode) return;

            this._curr = null;

            lock (Global.Instance.SyncLock)
            {
                //规格数据源
                using (var db = Global.Instance.OpenDataBase)
                {
                    this._storeProductCouponsList = db.Query<StoreProductCoupon>("where productId = @0 and specId = @1", this._orderItem.ProductId, this._orderItem.SpecId).ToList();
                }
            }


            if (this._storeProductCouponsList == null)
            {
                this._storeProductCouponsList = new List<StoreProductCoupon>();
            }

            BuilderAll();
        }

        private void BuilderAll()
        {
            //清空历史数据
            this.itemPanel.Items.Clear();

            ItemContainer ic = new ItemContainer();

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

            foreach (var entity in this._storeProductCouponsList)
            {

                MetroTileItem tileItem = new MetroTileItem();

                tileItem.TileStyle.PaddingLeft = tileItem.TileStyle.PaddingRight = -1;

                tileItem.OptionGroup = "Coupons";

                tileItem.SymbolColor = Color.Empty;
                tileItem.TileSize = new Size(150, 60);
                tileItem.TileStyle.CornerType = eCornerType.Square;

                tileItem.TileStyle.TextAlignment = eStyleTextAlignment.Center;
                tileItem.TileStyle.TextLineAlignment = eStyleTextAlignment.Near;

                tileItem.TitleText = Constant.CNY + entity.CouponPrice.ToString();

                tileItem.TitleTextAlignment = ContentAlignment.BottomCenter;
                tileItem.TitleTextFont = Constant.NORMAL_FONT;
                tileItem.Text = string.Format("{0}元优惠券",  entity.CouponPrice);
                //背景颜色
                tileItem.TileColor = eMetroTileColor.Coffee;
                //去除边框颜色
                tileItem.TileStyle.BorderColor = Color.Transparent;
                tileItem.TileStyle.BorderColor2 = Color.Transparent;

                if (entity.Id.Equals(this._orderItem.SpecId))
                {
                    tileItem.Checked = true;
                }

                tileItem.Tag = entity;

                tileItem.MouseDown += TileItemMouseDown;

                ic.SubItems.Add(tileItem);
            }

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

        private void TileItemMouseDown(object sender, MouseEventArgs e)
        {
            MetroTileItem item = (MetroTileItem)sender;
            item.Checked = true;

            var storeProductCoupon = item.Tag as StoreProductCoupon;

            //通知主界面改变
            this.OnNotifyChanged(new FlyoutEventArgs(FlyoutAction.Notify, storeProductCoupon));
        }
    }
}