public async Task <Category> UpdateAsync(int id, UpdateCategoryDto categoryToUpdate)
{
if (id < 1)
{
throw new ArgumentOutOfRangeException(nameof(id), id, "Id cannot be lower than 1.");
}
if (categoryToUpdate == null)
{
throw new ArgumentNullException(nameof(categoryToUpdate));
}
if (categoryToUpdate.Name.Length > 35)
{
throw new ArgumentOutOfRangeException(nameof(categoryToUpdate.Name), categoryToUpdate.Name, "Category name length cannot be greater than 35.");
}
if (!await _categoriesRepository.ExistsById(id))
{
throw new DataNotFoundException($"Category Id:{id} doesn't exists.");
}
if (await _categoriesRepository.ExistsByName(categoryToUpdate.Name))
{
throw new ArgumentException(nameof(categoryToUpdate.Name), $"Category {categoryToUpdate.Name} already exists.");
}
return(await _categoriesRepository.UpdateAsync(id, categoryToUpdate));
}