using System;
using InABox.Core;

namespace Comal.Classes
{
    [UserTracking(typeof(Product))]
    public class SupplierProduct : StockEntity, IPersistent, IRemotable, ILicense<ProductManagementLicense>, IExportable, IImportable, IManyToMany<Supplier, Product>
    {
        private bool bChanging;

        [EditorSequence(0)]
        public SupplierLink SupplierLink { get; set; }

        [EntityRelationship(DeleteAction.SetNull)]
        [NullEditor]
        [Obsolete("Replaced with Product", true)]
        public ProductLink ProductLink
        {
            get { return Product; }
            set { Product = value; }
        }
        
        [EntityRelationship(DeleteAction.SetNull)]
        [EditorSequence(1)]
        public override ProductLink Product { get; set; }
        
        [EditorSequence(2)]
        public JobLink Job { get; set; }

        [CodeEditor(Editable = Editable.Enabled)]
        [EditorSequence(3)]
        public string SupplierCode { get; set; }

        [TextBoxEditor]
        [EditorSequence(4)]
        public string SupplierDescription { get; set; }
        
        [EditorSequence(5)]
        [RequiredColumn]
        [DimensionsEditor(typeof(StockDimensions), AllowEditingUnit = false)]
        public override StockDimensions Dimensions { get; set; }

        [TextBoxEditor]
        [EditorSequence(6)]
        public string SupplierCategory { get; set; }

        [CurrencyEditor(Visible = Visible.Optional)]
        [EditorSequence(7)]
        public double TradePrice { get; set; }

        [DoubleEditor(Visible = Visible.Optional)]
        [EditorSequence(8)]
        public double Discount { get; set; }

        [CurrencyEditor(Visible = Visible.Optional)]
        [EditorSequence(9)]
        public double CostPrice { get; set; }

        [EditorSequence(10)]
        public TaxCodeLink TaxCode { get; set; }

        [URLEditor]
        [EditorSequence(11)]
        public string URL { get; set; }

        [TimestampEditor]
        [EditorSequence(12)]
        public DateTime Expired { get; set; }

        protected override void Init()
        {
            base.Init();
            SupplierLink = new SupplierLink(() => this);
            Job = new JobLink();
            TaxCode = new TaxCodeLink();
        }
        
        static SupplierProduct()
        {
            LinkedProperties.Register<SupplierProduct, ProductLink, String>(x => x.Product, x => x.Code, x => x.SupplierCode);
            LinkedProperties.Register<SupplierProduct, ProductLink, String>(x => x.Product, x => x.Name, x => x.SupplierDescription);
            StockEntity.LinkStockDimensions<SupplierProduct>();
        }

        protected override void DoPropertyChanged(string name, object before, object after)
        {
            base.DoPropertyChanged(name, before, after);

            if (bChanging)
                return;

            bChanging = true;

            if (name.Equals("TradePrice"))
                CostPrice = (double)after * (100.0F - Discount) / 100.0F;
            else if (name.Equals("Discount"))
                CostPrice = TradePrice * (100.0F - (double)after) / 100.0F;
            else if (name.Equals("CostPrice"))
                TradePrice = Discount == 100.0F ? double.MaxValue : (double)after / ((100.0F - Discount) / 100.0F);

            bChanging = false;
        }
    }
}