public IActionResult MoveCategory(MoveCategoryCommand cmd)
{
var parentCategory = _db.TestCategories.Find(cmd.ParentCategoryId);
if (parentCategory == null)
{
return(BadRequest($"Parent test category with id={cmd.ParentCategoryId} doesn't exist"));
}
var categories = _db.TestCategories.Where(c => c.ParentId == cmd.ParentCategoryId).ToList().OrderBy(c => c.Position);
if (categories.Count() < 2)
{
return(BadRequest($"Parent test category with id={cmd.ParentCategoryId} contain less then 2 nodes"));
}
var category = categories.FirstOrDefault(c => c.Id == cmd.CategoryId);
if (category == null)
{
return(NotFound($"Test category with id={cmd.CategoryId} and ParentId={cmd.ParentCategoryId} doesn't exist"));
}
var maxPosition = Math.Max(category.Position, cmd.Position);
var minPosition = Math.Min(category.Position, cmd.Position);
category.Position = cmd.Position;
int shift = cmd.Position == minPosition ? 1 : -1;
categories.Where(c => (c.Position >= minPosition && c.Position <= maxPosition && c.Id != category.Id))
.ToList()
.ForEach(c => c.Position += shift);
_db.SaveChanges();
return(Ok());
}
public IActionResult MoveCategory(MoveCategoryCommand cmd)
{
throw new NotImplementedException();
}