using System.Linq;
using Tanshu.Accounts.Contracts;
using Tanshu.Common;
using Tanshu.Accounts.Entities;
using System;

namespace Tanshu.Accounts.PointOfSale
{
    public class BillDict : OrderedDictionary<BillItemKey, BillItemValue>
    {
        public delegate void ItemChangedHandler();
        public void Load(Voucher voucher)
        {
            this.Clear();
            foreach (var kot in voucher.Kots)
            {
                var kotKey = new BillItemKey(kot.KotID);
                var kotItem = new BillItemValue(kot);
                this.Add(kotKey, kotItem);
                foreach (var inv in kot.Inventories)
                {
                    var key = new BillItemKey(inv.Product.ProductID, kot.KotID, inv.IsHappyHour);
                    var item = new BillItemValue(inv);
                    this.Add(key, item);
                }
            }
        }

        public decimal Tax
        {
            get
            {
                return this.Where(x => x.Key.BillItemType != BillItemType.Kot).Sum(i => i.Value.inventory.ServiceTaxAmount + i.Value.inventory.VatAmount);
            }
        }
        public decimal Discount
        {
            get
            {
                return this.Where(x=>x.Key.BillItemType != BillItemType.Kot).Sum(i => i.Value.inventory.DiscountAmount);
            }
        }
        public decimal ServiceCharge
        {
            get
            {
                return this.Where(x => x.Key.BillItemType != BillItemType.Kot).Sum(i => i.Value.inventory.ServiceChargeAmount);
            }
        }
        public decimal NetAmount
        {
            get
            {
                return this.Where(x => x.Key.BillItemType != BillItemType.Kot).Sum(i => i.Value.inventory.Net);
            }
        }
        public decimal Amount
        {
            get
            {
                return Math.Round(this.Where(x => x.Key.BillItemType != BillItemType.Kot).Sum(i => i.Value.inventory.Amount));
            }
        }
    }
}