using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web;
using System.Reflection;
using Resources;

namespace Weee.Models.ExtensionMethods
{
    public static class ProductLCAExtension
    {
        public static decimal GetScopeOnePrimaryFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            if (productLca == null) return 0;

            return productLca.WorkHourSheet.GetTotalKgCO2e() +
                   productLca.VehicleSheet.Where(x => x.Type == Vehicle.VehicleType.owned).ToList().GetTotalKgCO2e() +
                   productLca.GasolineEquipmentSheet.GetTotalKgCO2e() +
                   productLca.KitchenSheet.Where(x => x.Type == Kitchen.KitchenType.owned).ToList().GetTotalKgCO2e() +
                   productLca.KitchenSheet.Where(x => x.Type == Kitchen.KitchenType.other).ToList().GetTotalKgCO2e() +
                   productLca.RefrigerantSheet.GetTotalKgCO2e() +
                   productLca.FireEquipmentSheet.GetTotalKgCO2e() +
                   productLca.OtherCompoundSheet.GetTotalKgCO2e();
        }

        public static decimal GetScopeTwoPrimaryFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            if (productLca == null) return 0;
            return productLca.PowerUsageSheet.GetTotalKgCO2e() + productLca.SteamUsageSheet.GetTotalKgCO2e();
        }

        public static decimal GetScopeThreePrimaryFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            if (productLca == null) return 0;

            return productLca.WaterUsageSheet.GetTotalKgCO2e() +
                   productLca.VehicleSheet.Where(x => x.Type == Vehicle.VehicleType.rental).ToList().GetTotalKgCO2e() +
                   productLca.KitchenSheet.Where(x => x.Type == Kitchen.KitchenType.outsourcing).ToList().GetTotalKgCO2e();
        }

        public static decimal GetPrimaryFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            if (productLca == null) return 0;

            return (productLca.WorkHourSheet.GetTotalKgCO2e() +
                    productLca.VehicleSheet.GetTotalKgCO2e() +
                    productLca.GasolineEquipmentSheet.GetTotalKgCO2e() +
                    productLca.KitchenSheet.GetTotalKgCO2e() +
                    productLca.RefrigerantSheet.GetTotalKgCO2e() +
                    productLca.FireEquipmentSheet.GetTotalKgCO2e() +
                    productLca.OtherCompoundSheet.GetTotalKgCO2e() +
                    productLca.PowerUsageSheet.GetTotalKgCO2e() +
                    productLca.SteamUsageSheet.GetTotalKgCO2e() +
                    productLca.WaterUsageSheet.GetTotalKgCO2e());
        }

        public static decimal GetLcaResultKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            if (productLca == null) return 0;
            return productLca.Materials.GetTotalKgCO2e() +
                   productLca.GetPrimaryFabKgCO2e();
        }

        public static decimal GetSecondaryFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            if (productLca == null) return 0;
            return productLca.Materials.GetTotalKgCO2e() +
                   productLca.GetLcaResultKgCO2e() +
                   productLca.TransportSheet.GetTotalKgCO2e();
        }

        public static decimal GetPrimaryAndSecondaryFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            if (productLca == null) return 0;
            return (productLca.GetPrimaryFabKgCO2e() + productLca.GetSecondaryFabKgCO2e());
        }

        public static decimal GetTotalFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            if (productLca == null) return 0;

            return productLca.GetPrimaryFabKgCO2e() + 
                   productLca.WasteSheet.GetTotalKgCO2e() + 
                   productLca.WasteTransportSheet.GetTotalKgCO2e();
        }

        public static decimal GetScopeOneDistributeByWeightFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            if (productLca.GetDistributeWeight() == 0) return 0;
            return productLca.GetScopeOnePrimaryFabKgCO2e() / productLca.GetDistributeWeight();
        }

        public static decimal GetScopeOneDistributeByAreaFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            if (productLca.GetDistributeArea() == 0) return 0;
            return productLca.GetScopeOnePrimaryFabKgCO2e() / productLca.GetDistributeArea();
        }

        public static decimal GetScopeOneDistributeByHourFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            return productLca.GetScopeOnePrimaryFabKgCO2e() * productLca.GetDistributeHour();
        }

        public static decimal GetScopeTwoDistributeByWeightFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            if (productLca.GetDistributeWeight() == 0) return 0;
            return productLca.GetScopeTwoPrimaryFabKgCO2e() / productLca.GetDistributeWeight();
        }

        public static decimal GetScopeTwoDistributeByAreaFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            if (productLca.GetDistributeArea() == 0) return 0;
            return productLca.GetScopeTwoPrimaryFabKgCO2e() / productLca.GetDistributeArea();
        }

        public static decimal GetScopeTwoDistributeByHourFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            return productLca.GetScopeTwoPrimaryFabKgCO2e() * productLca.GetDistributeHour();
        }

        public static decimal GetScopeThreeDistributeByWeightFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            if (productLca.GetDistributeWeight() == 0) return 0;
            return productLca.GetScopeThreePrimaryFabKgCO2e() / productLca.GetDistributeWeight();
        }

        public static decimal GetScopeThreeDistributeByAreaFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            if (productLca.GetDistributeArea() == 0) return 0;
            return productLca.GetScopeThreePrimaryFabKgCO2e() / productLca.GetDistributeArea();
        }

        public static decimal GetScopeThreeDistributeByHourFabKgCO2e<T>(this T productLca) where T : ProductLCA
        {
            return productLca.GetScopeThreePrimaryFabKgCO2e() * productLca.GetDistributeHour();
        }

        public static decimal GetDistributeWeight<T>(this T productLca) where T : ProductLCA
        {
            decimal distributeWeight = 0;

            if (productLca.TargetProduct.Weight.HasValue &&
                productLca.FabProductionWeight.HasValue) {
                distributeWeight = productLca.TargetProduct.Weight.Value * productLca.FabProductionWeight.Value;
            }

            return distributeWeight;
        }

        public static decimal GetDistributeArea<T>(this T productLca) where T : ProductLCA
        {
            decimal distributeArea = 0;

            if (productLca.TargetProduct.AreaSize.HasValue &&
                productLca.FabProductionArea.HasValue) {
                distributeArea = productLca.TargetProduct.AreaSize.Value * productLca.FabProductionArea.Value;
            }

            return distributeArea;
        }

        public static decimal GetDistributeHour<T>(this T productLca) where T : ProductLCA
        {
            decimal distributeHour = 0;

            if (!productLca.FabProductionHour.HasValue ||
                !productLca.ProductProductionPcs.HasValue)
            {
                return 0;
            }

            if (productLca.FabProductionHour.Value != 0 &&
                productLca.ProductProductionPcs.Value != 0) 
            {
                distributeHour = (productLca.ProductProductionHour.Value / productLca.FabProductionHour.Value) * (1 / productLca.ProductProductionPcs.Value);
            }

            return distributeHour;
        }
    }
}