SweetSp3 1.2.5

[HttpPost]
public async Task<IActionResult> Save(Customer customer, IFormFile? photo)
{
   using var transaction = await _context.Database.BeginTransactionAsync();
   try
   {
       if (photo != null && photo.Length > 0)
       {
           var uploadsFolder = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot/Uploads");

           if (!Directory.Exists(uploadsFolder))
           {
               Directory.CreateDirectory(uploadsFolder);
           }

           var fileName = Path.GetFileNameWithoutExtension(photo.FileName);
           var extension = Path.GetExtension(photo.FileName);
           var uniqueFileName = $"{fileName}_{DateTime.Now.Ticks.ToString()}{extension}";
           var filePath = Path.Combine(uploadsFolder, uniqueFileName);

           using var stream = new FileStream(filePath, FileMode.Create);
           await photo.CopyToAsync(stream);

           customer.Photo = uniqueFileName;
       }

       if (customer.CustomerId > 0)
       {
           //for edit
           var existingCustomer = await _context.Customers
                                              .Include(c => c.DeliveryAddresses)
                                              .FirstOrDefaultAsync(c => c.CustomerId == customer.CustomerId);

           if (existingCustomer != null)
           {
               existingCustomer.Name = customer.Name;
               existingCustomer.Email = customer.Email;
               existingCustomer.Phone = customer.Phone;
               existingCustomer.Address = customer.Address;
               existingCustomer.CustomerType = customer.CustomerType;
               existingCustomer.CreditDetails = customer.CreditDetails;
               existingCustomer.BusinessStart = customer.BusinessStart;
               existingCustomer.Photo = customer.Photo ?? existingCustomer.Photo;

               _context.DeliveryAddresses.RemoveRange(existingCustomer.DeliveryAddresses);
               foreach (var address in customer.DeliveryAddresses)
               {
                   existingCustomer.DeliveryAddresses.Add(new DeliveryAddress
                   {
                       Address = address.Address,
                       ContactPerson = address.ContactPerson,
                       Phone = address.Phone
                   });
               }
               _context.Customers.Update(existingCustomer);
           }
       }
       else
       {
           //for insert

           _context.Customers.Add(customer);
       }
       await _context.SaveChangesAsync();
       await transaction.CommitAsync();
       return RedirectToAction("Index");
   }
   catch (Exception ex)
   {
       await transaction.RollbackAsync();
       Console.WriteLine($"Error: {ex.Message}");
       return BadRequest("An error occured while saving data!!");
   }
}

[HttpPost]
public async Task<IActionResult> Delete(int id)
{
   var customer = await _context.Customers.FindAsync(id);
   if (customer == null)
   {
       return NotFound();
   }
   _context.Customers.Remove(customer);
   await _context.SaveChangesAsync();

   return Json(new
   {
       redirectTo = Url.Action("Index", "Customers")
   });
}