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 DevComponents.DotNetBar.Controls;
using POSV.ShoppingCart;
using POSV.Utils;
using POSV.Component;
using POSV.Entity;
using POS.Language.Language;

namespace POSV.Business
{
    [ToolboxItem(false)]
    public partial class DiscountPanelEx : AbstractFlyoutPanelEx
    {
        /// <summary>
        /// 操作员默认的最大折扣率
        /// </summary>
        private decimal MaxDiscountRate = Global.Instance.Worker.MaxDiscountRate;

        /// <summary>
        /// 新的折扣率
        /// </summary>
        private decimal NewDiscountRate = 0;

        /// <summary>
        /// 当前选择的记录，单品折扣依赖
        /// </summary>
        private OrderItem _orderItem = null;

        /// <summary>
        /// 整单的记录，，整单折扣依赖
        /// </summary>
        private OrderObject _orderObject = null;

        /// <summary>
        /// 按键操作
        /// </summary>
        private ModuleKeyCode _keyCode = ModuleKeyCode.None;

        /// <summary>
        /// 权限控制码
        /// </summary>
        private string _permissionCode = string.Empty;

        /// <summary>
        /// 授权人权限信息
        /// </summary>
        private Tuple<decimal , decimal , List<string> , Worker> _authz = null;

        /// <summary>
        /// 授权界面或者录入界面切换
        /// </summary>
        private AuthOperator _auth = AuthOperator.None;

        private DiscountPanelEx()
        {
            InitializeComponent();

            this.tabControl.TabsVisible = false;

            this.Height = this.Height - 30;
        }

        public DiscountPanelEx(ModuleKeyCode keyCode,OrderItem orderItem , OrderObject orderObject , string permissionCode , AuthOperator auth = AuthOperator.输入操作 , Tuple<decimal , decimal , List<string> , Worker> authz = null) : this()
        {
            this._orderItem = orderItem;

            this._orderObject = orderObject;

            this._keyCode = keyCode;

            //操作功能的权限码
            this._permissionCode = permissionCode;

            //授权人综合信息
            this._authz = authz;

            //如果授权人存在，说明是外部传入，当前操作按照授权人的最高折扣率
            if (this._authz != null)
            {
                this.MaxDiscountRate = this._authz.Item1;
            }

            //外部传入的操作
            this._auth = auth;
            //定义授权界面的操作事件
            this.authPanel.ButtonClick += OnAuthzButtonClick;
            //默认校验权限控制码
            this.authPanel.ExpectValidate(this._permissionCode);
        }

        /// <summary>
        /// 授权事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnAuthzButtonClick(object sender , AuthEventArgs e)
        {
            switch (e.Action)
            {
                case AuthAction.Close:
                    {
                        this.OnCancelButtonClick(new FlyoutEventArgs(FlyoutAction.Cancel , e.KeyCode , null));
                    }
                    break;
                case AuthAction.Cancel:
                    {
                        this.tabControl.SelectedTab = null;
                        this.tabControl.SelectedTab = this.tabInput;
                    }
                    break;
                case AuthAction.Accept:
                    {
                        if (e.Data is Tuple<decimal , decimal , List<string> , Worker>)
                        {
                            this._authz = e.Data as Tuple<decimal , decimal , List<string> , Worker>;

                            var logInfo = string.Format(LangProxy.ToLang("操作由[{0},{1}]授权") , this._authz.Item4.No , this._authz.Item4.Name);

                            LogUtils.WriteLog(LogAction.授权操作 , logInfo , this._authz.Item4.No , this._orderObject.TradeNo);

                            //修改为授权人的最大折扣率
                            this.MaxDiscountRate = this._authz.Item1;

                            this.tabControl.SelectedTab = null;
                            this.tabControl.SelectedTab = this.tabInput;

                            this.ShowMessage(this.lblInfo , logInfo);

                        }
                    }
                    break;
            }
        }

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

            if (this.DesignMode) return;

            this.SetStyle(ControlStyles.Selectable , true);

            switch (this._keyCode)
            {
                case ModuleKeyCode.整单折扣:
                    {
                        //移除 整单折扣和单品折扣
                        this.tableLayoutPanel.Controls.Remove(this.touchButtonX13);
                        this.tableLayoutPanel.Controls.Remove(this.touchButtonX5);

                        //在[3,2]位置添加整单折扣
                        this.tableLayoutPanel.Controls.Add(this.touchButtonX13 , 3 , 2);

                        this.tableLayoutPanel.SetRowSpan(this.touchButtonX13 , 2);

                        this.touchButtonX13.Text = LangProxy.ToLang("确定");
                    }
                    break;
                case ModuleKeyCode.单品折扣:
                    {
                        this.tableLayoutPanel.Controls.Remove(this.touchButtonX13);

                        this.tableLayoutPanel.SetRowSpan(this.touchButtonX5 , 2);

                        this.touchButtonX5.Text = LangProxy.ToLang("确定");
                    }
                    break;
            }
            this.txtDiscount.Multiline = false;
            this.txtDiscount.Focus();
            this.txtDiscount.SelectAll();
            
            this.ActiveControl = this.txtDiscount;

            this.tabControl.SelectedTab = null;
            switch (this._auth)
            {
                case AuthOperator.输入操作:
                    {
                        this.tabControl.SelectedTab = this.tabInput;
                    }
                    break;
                case AuthOperator.授权操作:
                    {
                        this.tabControl.SelectedTab = this.tabAuthc;
                    }
                    break;
            }
        }

        public void ShowMessage(string message , bool error)
        {
            this.Invoke(new Action(() => {
                this.ShowMessage(this.lblInfo , message,error);
            }));
        }


        private void OnTouchClick(object sender , Component.TouchEventArgs e)
        {
            switch (e.Value)
            {
                case "clear":
                    {
                        this.txtDiscount.Text = string.Empty;
                        this.txtDiscount.Focus();
                    }
                    break;
                case "close":
                    {
                        this.OnCancelButtonClick(new FlyoutEventArgs(FlyoutAction.Cancel, e.Value, null));
                    }
                    break;
                case "item":
                    {
                        if (this._orderItem == null)
                        {
                            this.ShowMessage(this.lblInfo, LangProxy.ToLang("单品折扣当前不可用"), true);
                        }
                        else
                        {
                            //最低售价销售或者权限不足时提示,收银员确认是否继续
                            bool isGo = true;

                            if (string.IsNullOrEmpty(this.txtDiscount.Text.Trim()))
                            {
                                this.ShowMessage(this.lblInfo , LangProxy.ToLang("请输入折扣值....") , true);

                                isGo = false;
                            }

                            //当前售价的最高优惠
                            decimal maxDiscountAmount = this._orderItem.Quantity * this._orderItem.Price * (1 - this.MaxDiscountRate);
                            //优惠金额
                            var discountAmount = this._orderItem.Quantity * this._orderItem.Price * (1 - this.NewDiscountRate);
                            if (isGo && discountAmount > maxDiscountAmount)
                            {
                                isGo = false;

                                string info = string.Format(LangProxy.ToLang("权限不足,单价不低于{0}元") , OrderUtils.ToRound(this._orderItem.Price * this.MaxDiscountRate));

                                if (this._authz == null)
                                {
                                    this.ShowMessage(this.lblInfo , info , true);

                                    this.authPanel.SetTitle(LangProxy.ToLang("单品折扣"));

                                    //期望的折扣率
                                    decimal expectDiscountRate = this.NewDiscountRate;
                                    this.authPanel.ExpectValidate(this._permissionCode , expectDiscountRate);

                                    //等待授权操作
                                    this.tabControl.SelectedTab = null;
                                    this.tabControl.SelectedTab = this.tabAuthc;
                                }
                                else
                                {
                                    info = string.Format(LangProxy.ToLang("授权人权限不足,单价不低于{0}元") , OrderUtils.ToRound(this._orderItem.Price * this.MaxDiscountRate));

                                    this.ShowMessage(this.lblInfo , info , true);

                                    this.txtDiscount.SelectAll();
                                    this.txtDiscount.Focus();
                                }
                                
                            }

                            //是否低于最低售价的验证
                            //最低售价下的金额
                            decimal minAmount = this._orderItem.Quantity * this._orderItem.MinPrice;
                            if((this._orderItem.Amount - discountAmount) < minAmount)
                            {
                                //是否允许低于最低售价销售
                                bool allowMinPriceSale = Global.Instance.GlobalConfigBoolValue(ConfigConstant.CASHIER_ALLOW_MIN_PRICE_SALE , false);
                                //允许低于最低售价
                                if (isGo && allowMinPriceSale)
                                {
                                    //低于最低售价销售时提示
                                    bool allowMinPriceSaleNofity = Global.Instance.GlobalConfigBoolValue(ConfigConstant.CASHIER_MIN_PRICE_SALE_NOTIFY , false);
                               
                                    //低于最低售价销售时提示
                                    if (isGo && allowMinPriceSaleNofity)
                                    {
                                        var dialog = new DialogForm(LangProxy.ToLang("销售提示信息") , LangProxy.ToLang("您确定要低于最低售价销售?" ), MessageBoxIcon.Warning , MessageBoxButtons.OKCancel);
                                        dialog.StartPosition = FormStartPosition.CenterParent;
                                        dialog.Size = new Size(320, 150);
                                        if (DialogResult.Cancel == dialog.ShowDialog(this))
                                        {
                                            isGo = false;
                                        }
                                    }
                                }
                                else
                                {
                                    this.ShowMessage(this.lblInfo , LangProxy.ToLang("不允许低于最低售价销售" ), true);
                                    isGo = false;
                                }
                            }

                            if (isGo)
                            {
                                //单品议价
                                var promotion = new PromotionItem();
                                //标识
                                promotion.Id = IdWorkerUtils.Instance.NextId();
                                //租户ID
                                promotion.TenantId = this._orderItem.TenantId;
                                //订单ID
                                promotion.OrderId = this._orderItem.OrderId;
                                //订单编号
                                promotion.TradeNo = this._orderItem.TradeNo;
                                //单品编号
                                promotion.ItemId = this._orderItem.Id;
                                //类型
                                promotion.PromotionType = PromotionType.折扣;
                                //折扣率
                                promotion.DiscountRate = this.NewDiscountRate;

                                //是否启用
                                promotion.Enabled = false;

                                this.OnAcceptButtonClick(new FlyoutEventArgs(FlyoutAction.Accept , e.Value , promotion));
                            }
                        }

                    }
                    break;
                case "order":
                    {
                        if (this._orderObject == null)
                        {
                            this.ShowMessage(this.lblInfo , LangProxy.ToLang("整单折扣当前不可用") , true);
                        }
                        else
                        {
                            //*******整单折扣不控制最低售价


                            //最低售价销售时提示,收银员确认是否继续
                            bool isGo = true;

                            if (string.IsNullOrEmpty(this.txtDiscount.Text.Trim()))
                            {
                                this.ShowMessage(this.lblInfo , LangProxy.ToLang("请输入折扣值....") , true);

                                isGo = false;
                            }
                            
                            //当前售价的最高优惠
                            decimal maxDiscountAmount = this._orderObject.Amount * (1 - this.MaxDiscountRate);
                            //折扣后的优惠金额
                            var discountAmount = this._orderObject.Amount * (1 - this.NewDiscountRate);
                            if (isGo && discountAmount > maxDiscountAmount)
                            {
                                isGo = false;

                                string info = string.Format(LangProxy.ToLang("权限不足,总价不低于{0}元") , OrderUtils.ToRound(this._orderObject.Amount * this.MaxDiscountRate));
                                if (this._authz == null)
                                {
                                    this.ShowMessage(this.lblInfo , info , true);

                                    this.authPanel.SetTitle(LangProxy.ToLang("整单折扣"));

                                    //期望的折扣率
                                    decimal expectDiscountRate = this.NewDiscountRate;
                                    this.authPanel.ExpectValidate(this._permissionCode , expectDiscountRate);

                                    //等待授权操作
                                    this.tabControl.SelectedTab = null;
                                    this.tabControl.SelectedTab = this.tabAuthc;
                                }
                                else
                                {
                                    info = string.Format(LangProxy.ToLang("授权人权限不足,总价不低于{0}元") , OrderUtils.ToRound(this._orderObject.Amount * this.MaxDiscountRate));

                                    this.ShowMessage(this.lblInfo , info , true);

                                    this.txtDiscount.SelectAll();
                                    this.txtDiscount.Focus();

                                }
                            }

                            if (isGo)
                            {
                                //整单议价
                                var promotion = new PromotionOrder();
                                //标识
                                promotion.Id = IdWorkerUtils.Instance.NextId();
                                //租户ID
                                promotion.TenantId = this._orderObject.TenantId;
                                //订单ID
                                promotion.OrderId = this._orderObject.Id;
                                //订单编号
                                promotion.TradeNo = this._orderObject.TradeNo;
                                //单品编号
                                promotion.ItemId = string.Empty;
                                //类型
                                promotion.PromotionType = PromotionType.整单折扣;
                                //折扣率
                                promotion.DiscountRate = this.NewDiscountRate;

                                //优惠前金额
                                promotion.Amount = this._orderObject.Amount;
                                //优惠金额
                                promotion.DiscountAmount = OrderUtils.ToRound(this._orderObject.Amount * (1 - this.NewDiscountRate));
                                //整单议价后的金额
                                promotion.ReceivableAmount = this._orderObject.Amount  - promotion.DiscountAmount;

                                //是否启用
                                promotion.Enabled = false;

                                this.OnAcceptButtonClick(new FlyoutEventArgs(FlyoutAction.Accept , e.Value , promotion));
                            }
                        }
                    }
                    break;
               
                default:
                    InputSimulatorUtils.SendKey(KeyCodes.Map[e.Value]);
                    break;
            }
        }

        private void OnDiscountEnterClick(object sender , Component.EnterEventArg e)
        {
            this.OnTouchClick(this.touchButtonX4 , new TouchEventArgs(this.touchButtonX4.KeyCode));
        }

        private void OnValueChanged(object sender , EnterEventArg e)
        {
            if (!string.IsNullOrEmpty(e.Value) && this.txtDiscount.DecimalValue >= this.MaxDiscountRate * 10)
            {
                decimal v = (Convert.ToDecimal(e.Value) / Convert.ToDecimal(100.0));
                decimal.TryParse(v.ToString("0.##") , out v);
                this.NewDiscountRate = v;
            }
            else
            {
                this.NewDiscountRate = 0;
            }
        }

        private void OnTabChanged(object sender , DevComponents.DotNetBar.SuperTabStripSelectedTabChangedEventArgs e)
        {
            var tab = this.tabControl.SelectedTab;

            var opt = AuthOperator.None;

            Enum.TryParse(tab.Tag.ToString() , out opt);

            switch (opt)
            {
                case AuthOperator.授权操作:
                    {
                        this.ActiveControl = this.authPanel;

                        //设置焦点
                        this.authPanel.SetFocus();
                    }
                    break;
                case AuthOperator.输入操作:
                    {
                        this.ActiveControl = this.txtDiscount;

                        this.txtDiscount.Multiline = false;
                        this.txtDiscount.Focus();
                        this.txtDiscount.SelectAll();
                    }
                    break;
            }
        }

        private void OnTabChanging(object sender , DevComponents.DotNetBar.SuperTabStripSelectedTabChangingEventArgs e)
        {
            //是否开启授权
            e.Cancel = !Global.Instance.GlobalConfigBoolValue(ConfigConstant.CASHIER_AUTO_LOCK_DISABLE , false);
        }
    }
}