using POSV.Component;
using POSV.MessageEvent;
using POSV.ShoppingCart;
using POSV.Utils;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace POSV.Business
{
    public partial class CashDialogForm : BusinessForm
    {
        /// <summary>
        /// 现金结算 编码
        /// </summary>
        private const string PayModeNo = "01";

        /// <summary>
        /// 操作是否验证通过
        /// </summary>
        private bool inputVerify = false;


        private OrderObject _orderObject = null;

        public CashDialogForm(OrderObject orderObject)
        {
            InitializeComponent();

            this._orderObject = orderObject;

            this.ActiveControl = this.txtCash;
        }

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

            if (DesignMode) return;

            this.txtCash.Multiline = false;
            this.txtCash.Focus();
            this.txtCash.Select();

            //应收金额
            this.lblReceivableAmount.Text = string.Format(this.lblReceivableAmount.Tag.ToString(),this._orderObject.ReceivableAmount);
            //实收金额
            this.lblInputAmount.Text = string.Format(this.lblInputAmount.Tag.ToString(), "0.00");
            //找零金额
            this.lblChangeAmount.Text = string.Format(this.lblChangeAmount.Tag.ToString(), "0.00");

        }       

        private decimal CalculateChangeAmount(decimal inputMoney)
        {
            if (this._orderObject.Pays == null)
            {
                this._orderObject.Pays = new List<PayItem>();
            }
            //待收金额 = 应收金额 - 已收金额
            decimal receivableAmount = this._orderObject.PaidAmount - this._orderObject.Pays.FindAll(x => !x.No.Equals(PayModeNo)).Sum(x => x.PaidAmount);
            //重新计算找零金额
            return inputMoney < receivableAmount ? 0 : (inputMoney - receivableAmount);
        }

        private void OnKeyBoardTouchAfter(object sender, KeyboardExtEventArgs e)
        {
            try
            {
                this.ActiveControl = this.txtCash;
                this.txtCash.Focus();

                switch (e.KeyCode)
                {
                    case "clear":
                        {
                            //如果当前焦点控件是输入框
                            this.txtCash.Text = string.Empty;
                            this.txtCash.Focus();
                        }
                        break;
                    case "close":
                        {
                            OnCloseClick(sender, EventArgs.Empty);
                        }
                        break;
                    case "accept":
                        {
                            //验证通过
                            if (this.inputVerify)
                            {
                                this.OnAcceptButtonClick(new TransparentEventArgs(TransparentAction.Accept, e.KeyCode, this.txtCash.DecimalValue));

                                this.OnCloseClick(sender, EventArgs.Empty);
                            }
                        }
                        break;
                    case "100":
                        {
                            InputSimulatorUtils.SendKey(KeyCodes.Map["1"]);
                            InputSimulatorUtils.SendKey(KeyCodes.Map["0"]);
                            InputSimulatorUtils.SendKey(KeyCodes.Map["0"]);
                        }
                        break;
                    case "50":
                        {
                            InputSimulatorUtils.SendKey(KeyCodes.Map["5"]);
                            InputSimulatorUtils.SendKey(KeyCodes.Map["0"]);
                        }
                        break;
                    case "20":
                        {
                            InputSimulatorUtils.SendKey(KeyCodes.Map["2"]);
                            InputSimulatorUtils.SendKey(KeyCodes.Map["0"]);
                        }
                        break;
                    case "10":
                        {
                            InputSimulatorUtils.SendKey(KeyCodes.Map["1"]);
                            InputSimulatorUtils.SendKey(KeyCodes.Map["0"]);
                        }
                        break;
                    default:
                        {
                            InputSimulatorUtils.SendKey(KeyCodes.Map[e.KeyCode]);
                        }
                        break;
                }
            }
            finally
            {
                
            }
        }

        private void OnCloseClick(object sender, EventArgs e)
        {
            if (this.Owner != null)
            {
                this.Owner.Close();
            }
            this.Close();
        }

        private void OnInputValueChanged(object sender, EnterEventArg e)
        {
            this.inputVerify = false;

            if (this._orderObject == null)
            {
                this.ShowToastNotify(this, "订单数据错误啦,请拍个照...");

                //实收金额
                this.lblInputAmount.Text = string.Format(this.lblInputAmount.Tag.ToString(), "0.00");
                //找零金额
                this.lblChangeAmount.Text = string.Format(this.lblChangeAmount.Tag.ToString(), "0.00");

                return;
            }
            
            decimal inputMoney = this.txtCash.DecimalValue;
            if (inputMoney < 0)
            {
                this.ShowToastNotify(this, "请输入金额...");

                //实收金额
                this.lblInputAmount.Text = string.Format(this.lblInputAmount.Tag.ToString(), "0.00");
                //找零金额
                this.lblChangeAmount.Text = string.Format(this.lblChangeAmount.Tag.ToString(), "0.00");
                
                this.txtCash.Focus();
                this.txtCash.SelectAll();

                return;
            }

            //计算找零金额
            decimal changeAmount = this.CalculateChangeAmount(inputMoney);
            //前台收银找零不允许超过100元
            bool notAllowMoreOneHundred = Global.Instance.GlobalConfigBoolValue(ConfigConstant.CASHIER_NOT_ALLOW_MORE_ONE_HUNDRED);
            if (notAllowMoreOneHundred && changeAmount > 100)
            {
                this.ShowToastNotify(this, "找零不允许超过100元...");

                //实收金额
                this.lblInputAmount.Text = string.Format(this.lblInputAmount.Tag.ToString(), "0.00");
                //找零金额
                this.lblChangeAmount.Text = string.Format(this.lblChangeAmount.Tag.ToString(), "0.00");


                this.txtCash.Focus();
                this.txtCash.SelectAll();

                return;
            }

            //实收金额
            this.lblInputAmount.Text = string.Format(this.lblInputAmount.Tag.ToString(), inputMoney);
            //找零金额
            this.lblChangeAmount.Text = string.Format(this.lblChangeAmount.Tag.ToString(), changeAmount);
            
            //找零
            this._orderObject.ChangeAmount = changeAmount;

            this.inputVerify = true;
        }
    }
}