using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using GB5Shared.DTO.Framework.AutoNumber;
using GB5Shared.DTO.Framework.Criteria;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.GenerateAutoNumber;
using GB5Shared.Resource.Response;
using GB5Shared.Validation;
using MMDAL.CustomCode.Delivery;
using MMDAL.DTO.Delivery;

namespace MMBLL.Delivery
{
    public class DeliveryBLL : IDeliveryBLL
    {
        private readonly IDeliveryDAL _DeliveryDAL;
        private readonly AutoNumber _AutoNumber;
        private readonly IValidation _Validation;

        public DeliveryBLL(IDeliveryDAL IDeliveryDAL, AutoNumber AutoNumber, IValidation Validation)
        {
            _DeliveryDAL = IDeliveryDAL;
            _AutoNumber = AutoNumber;
            _Validation = Validation;
        }

        public async Task<string> GetDelivery(int DeliveryId, LoginDTO LoginDTO)
        {
            try
            {
                return await _DeliveryDAL.GetDelivery(DeliveryId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public async Task<string> SaveDelivery(DeliveryDTO DeliveryDTO, LoginDTO LoginDTO)
        {
            if (DeliveryDTO == null) throw new ArgumentNullException(nameof(DeliveryDTO));
            AutoNumberDTO? autoNumberDTO = null;

            try
            {
                DeliveryDTO.DeliveryModifiedById = LoginDTO.UserId;
                DeliveryDTO.DeliveryModifiedOn = DateTime.UtcNow;

                int count = 1;
                if (DeliveryDTO.DeliveryId == 0)
                {
                    autoNumberDTO = await _AutoNumber.GetAutoNumber(count, "DELIVERY", LoginDTO);
                    DeliveryDTO.DeliveryId = autoNumberDTO.StartNumber;
                    DeliveryDTO.DeliveryCreatedById = LoginDTO.UserId;
                    DeliveryDTO.DeliveryCreatedOn = DateTime.UtcNow;

                    await _DeliveryDAL.SaveDelivery(DeliveryDTO, LoginDTO);
                    return $"{SuccessResponse.SaveSuccessMessage} {DeliveryDTO.DeliveryId}";
                }
                else
                {
                    await _DeliveryDAL.UpdateDelivery(DeliveryDTO, LoginDTO);
                    return $"{SuccessResponse.UpdateSuccessMessage} {DeliveryDTO.DeliveryId}";
                }
            }
            catch (ValidationException vex)
            {
                throw new Exception(vex.Message);
            }
            catch (Exception)
            {
                if (autoNumberDTO != null && DeliveryDTO.DeliveryId > 0)
                    await _AutoNumber.RollbackAutoNumber("DELIVERY", DeliveryDTO.DeliveryId, LoginDTO);

                throw;
            }
        }

        public async Task<string> DeleteDelivery(int DeliveryId, LoginDTO LoginDTO)
        {
            try
            {
                return await _DeliveryDAL.DeleteDelivery(DeliveryId, LoginDTO);
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}