public IHttpActionResult PostItem(DtoItem dtoItem)
{
//Validate supplied DTO
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (dtoItem == null)
{
return(BadRequest("Must supply item in body of request."));
}
if (dtoItem.Key == null)
{
return(BadRequest("Must supply key when creating item."));
}
//Get parent item
Item potentialParent = null;
if (dtoItem.Parent != null)
{
potentialParent = db.Items.Find(dtoItem.Parent);
if (potentialParent == null)
{
return(BadRequest("Can't find parent with specified Id"));
}
if (potentialParent is Leaf)
{
throw new System.InvalidOperationException("Parent cannot be Leaf");
}
}
//Create item and assign it to its parent as a child
Item item;
try
{
item = dtoItem.ToDomainObject((Node)potentialParent);
if (potentialParent != null)
{
((Node)potentialParent).Children.Add(item);
}
}
catch (InvalidDataException exception)
{
return(BadRequest(exception.Message));
}
item.Created();
db.Items.Add(item);
db.SaveChanges();
return(CreatedAtRoute("DefaultApi", new { id = item.Id }, item.ToDto()));
}
public IHttpActionResult PutItem(int id, DtoItem dtoItem)
{
//Check dto received is valid
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
//Check id matches
if (dtoItem == null)
{
return(BadRequest("Must supply item in body of request."));
}
if (id != dtoItem.Id)
{
return(BadRequest("Id in url must match id in request body."));
}
//Get the itemfrom the db
Item item = db.Items.Find(id);
if (item == null)
{
return(StatusCode(HttpStatusCode.NotFound));
}
//Get the item's parent
Item potentialParent = null;
if (dtoItem.Parent != null)
{
potentialParent = db.Items.Find(dtoItem.Parent);
if (potentialParent == null)
{
return(BadRequest("Can't find parent with specified Id"));
}
if (potentialParent is Leaf)
{
throw new System.InvalidOperationException("Parent cannot be Leaf");
}
}
//Convert parent to domain object
//Update the item's key to match the parent, and value if the item is a leaf
try
{
Item new_item = dtoItem.ToDomainObject((Node)potentialParent);
item.Key = new_item.Key;
if (dtoItem is DtoLeaf)
{
if (!(item is Leaf))
{
throw new System.InvalidOperationException("Item type must match.");
}
((Leaf)item).Value = ((Leaf)new_item).Value;
((Leaf)item).Stale = ((Leaf)new_item).Stale;
}
}
catch (InvalidDataException exception)
{
return(BadRequest(exception.Message));
}
item.Updated();
db.SaveChanges();
return(Ok(item.ToDto()));
}