using System.Linq.Expressions;
using Comal.Classes;
using InABox.Core;
using InABox.Database;

namespace PRS.Shared;

public class Update_6_43 : DatabaseUpdateScript
{

    public override VersionNumber Version => new (6, 43);
        
    public override bool Update()
    {
        Logger.Send(LogType.Information, "", "Converting Supplier/Product Links");
        List<SupplierProduct> updates = new List<SupplierProduct>();
        var columns = Columns.None<SupplierProduct>().Add(x => x.ID).Add(x=>x.Product.ID);
        columns.Add("ProductLink.ID");
        CoreTable products = DbFactory.NewProvider(Logger.Main).Query<SupplierProduct>(null, columns);
        foreach (var row in products.Rows)
        {
            Guid id = row.Get<SupplierProduct,Guid>(x=>x.ID);
            Guid oldid = row.Get<Guid>("ProductLink.ID");
            Guid newid = row.Get<SupplierProduct,Guid>(x=>x.Product.ID);
            if ((oldid != Guid.Empty) && (newid == Guid.Empty))
            {
                var update = new SupplierProduct() { ID = id };
                update.CommitChanges();
                update.Product.ID = oldid;
                updates.Add(update);
            }
        }

        DbFactory.NewProvider(Logger.Main).Save(updates);

        return true;
    }
    
}