using Sarand.BusinessMgr.Net.Standard.Base.App;
using Sarand.BusinessMgr.Net.Standard.Base.Bus;
using Sarand.BusinessMgr.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.Core;
using System;
using System.Collections.Generic;

namespace Sarand.BusinessMgr.Net.Standard.Base.Mgr
{
	//=======================================================================
	public abstract partial class SbmPriceMgr : SbmItemMgr
	{
		//-------------------------------------------------------------------
		// Data members.
		// Code types.
		private List<Sbm.ApplCodeType> supportedCodeTypes = new List<Sbm.ApplCodeType>()
		{
		};

		//-------------------------------------------------------------------
		// Construction.
		protected SbmPriceMgr(ISbmUserContext userContext) :
			base(userContext)
		{
		}
		protected override void Dispose(bool disposing)
		{
			if (disposing)
			{
			}
			base.Dispose(disposing);
		}

		//-------------------------------------------------------------------
		// Properties.
		public abstract bool PriceDatabaseIsValid { get; }
		// System codes.
		public List<TypeCodeDesc> PriceTypes { get { return GetCodesOfType(Sbm.SystemCode.PriceType); } }
		public List<TypeCodeDesc> PriceCalculationMethods { get { return GetCodesOfType(Sbm.SystemCode.PriceCalcMethod); } }
		public List<TypeCodeDesc> PriceRounderMethods { get { return GetCodesOfType(Sbm.SystemCode.PriceRounderMethod); } }
		public List<TypeCodeDesc> PriceRounderDirections { get { return GetCodesOfType(Sbm.SystemCode.PriceRounderDirection); } }
		// Code types.
		public override List<Sbm.ApplCodeType> SupportedCodeTypes { get { return new List<Sbm.ApplCodeType>(supportedCodeTypes); } }

		//-------------------------------------------------------------------
		// Utilities.
		public decimal CalculatePrice(decimal fSalesPrice, SbmPriceCalculationParams prmCalc)
		{
			// Clear working data.
			prmCalc.IsPriceSetUsed = false;
			prmCalc.IsDiscountUsed = false;

			// Calculate sales price:
			decimal fPrice = fSalesPrice;

			// First try the price set:
			if (prmCalc.IsPriceSetAvailable)
			{
				prmCalc.IsPriceSetUsed = true;
				// Price set derived pricing method:
				decimal fCalcValue = prmCalc.CalculationValue;
				switch (prmCalc.CalculationMethod)
				{
					case Sbm.PriceCalcMethod.Fixed:
						// Fixed discounted price (ie. List=100.00 Fixed=60.00):
						fPrice = Math.Max(0.0m, fCalcValue);
						break;
					case Sbm.PriceCalcMethod.Standard:
						// Uses standard stock record sales price.
						break;
					case Sbm.PriceCalcMethod.DecreasePercent:
						// Decrease product sales price by a percentage:
						fPrice = Math.Max(0.0m, fPrice - (fPrice * (fCalcValue / 100.0m)));
						break;
					case Sbm.PriceCalcMethod.DecreaseValue:
						// Decrease product sales price by a specified amount
						fPrice = Math.Max(0.0m, fPrice - fCalcValue);
						break;
					case Sbm.PriceCalcMethod.MarkupCost:
						// Increase cost price by a percentage
						fPrice = Math.Max(0.0m, fPrice + (fPrice * (fCalcValue / 100.0m)));
						break;
					case Sbm.PriceCalcMethod.MarkupValue:
						// Increase cost price by a specified amount
						fPrice = Math.Max(0.0m, fPrice + fCalcValue);
						break;
					case Sbm.PriceCalcMethod.MarkupSales:
						// Increase sales price by a percentage
						fPrice = Math.Max(0.0m, fPrice + (fPrice * (fCalcValue / 100.0m)));
						break;
					default:
						prmCalc.IsPriceSetUsed = false;
						break;
				}
			}
			// Discount rate can be used if there is no price set or
			// both are allowed to be used.
			bool bUseDiscount = Math.Abs(prmCalc.DiscountRate) > 0.001m && !prmCalc.IsPriceSetUsed;
			if (bUseDiscount && prmCalc.IsPriceSetAvailable && !prmCalc.IsPriceSetUsed)
			{
				// Price set is available but no valid price found.
				// Discount can be used if allowed in conjunction with no price set price found.
				SbmConfigConsole configConsole = ConfigConsole;
				if (prmCalc.IsSales)
					bUseDiscount = configConsole != null && configConsole.AllowOption(UserContext, Sbm.ConfigOption.CustomerDiscountWhenNoPriceInSet);
				else
					bUseDiscount = configConsole != null && configConsole.AllowOption(UserContext, Sbm.ConfigOption.SupplierDiscountWhenNoPriceInSet);
			}
			if (bUseDiscount)
			{
				// Global discount rate:
				fPrice = Math.Max(0.0m, fPrice * (1.0m - (prmCalc.DiscountRate / 100.0m)));
				if (prmCalc.DiscountType == Sbm.DiscountType.NoDiscount)
				{
					// Discount type refers to 'additional' discounts (over and above discount rate).
				}
				//else if (prmCalc.eDiscountType == eSapDiscountType_ValueDiscount)
				//{
				//	fPrice = fPrice * (1.0f - (prmCalc.fDiscountRate/100.0f));
				//}
				prmCalc.IsDiscountUsed = true;
			}
			return Math.Round(fPrice, prmCalc.CurrencyDecimals);
		}

		//-------------------------------------------------------------------
	}
	//=======================================================================
}