using bnhtrade.Core.Data.Database.UnitOfWork;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace bnhtrade.Core.Logic.Account
{
    public class InvoiceLineItemService : UnitOfWorkBase
    {
        private Logic.Log.LogEvent _log = new Logic.Log.LogEvent();

        public InvoiceLineItemService()
        {
        }

        internal InvoiceLineItemService(IUnitOfWork unitOfWork) : base(unitOfWork)
        {
        }

        /// <summary>
        /// Creates new 'default' item code entry. The item code and title are set, will require updating by user before use.
        /// </summary>
        /// <param name="itemCode">Item code string</param>
        /// <returns></returns>
        public Model.Account.InvoiceLineItem CreateNew(string itemCode)
        {
            return WithUnitOfWork(uow =>
            {
                uow.InvoiceRepository.CreateDefaultInvoiceLineItem(itemCode);
                var item = uow.InvoiceRepository.GetInvoiceLineItem(null, new List<string> { itemCode });
                if (item == null || item.Count == 0)
                {
                    _log.LogError("InvoiceLineItemService.CreateNew", "Error creating new invoice line item in database for item code: " + itemCode);
                    throw new Exception("Error creating new invoice line item in database");
                }
                CommitIfOwned(uow);
                return item[0];
            });
        }

        public Dictionary<string, Model.Account.InvoiceLineItem> GetLineItems(List<string> itemCodes)
        {
            return WithUnitOfWork(uow =>
            {
                var dbResult = uow.InvoiceRepository.GetInvoiceLineItem(null, itemCodes);
                var returnDict = new Dictionary<string, Model.Account.InvoiceLineItem>();
                foreach (var item in dbResult)
                {
                    returnDict.Add(item.Value.ItemCode, item.Value);
                }
                return returnDict;
            });
        }
    }
}