public void AddItemToGroup(string groupName, string itemName)
{
if (groupName == itemName)
{
throw new ArgumentException("Cannot add a group to itself.");
}
IGroupModel parent = _groupStore.GetOne(x => x.Name == groupName);
if (parent == null)
{
throw new ArgumentException($"Can't add item to group named {groupName} since it doesn't exist.");
}
ITextModel childText = _textStore.GetOne(x => x.Name == itemName);
IGroupModel childGroup = _groupStore.GetOne(x => x.Name == itemName);
if (childText == null)
{
if (childGroup == null)
{
throw new ArgumentException($"Can't add item named {itemName} to group since it doesn't exist.");
}
if (_groupStore.Contains(childGroup, parent))
{
throw new ArgumentException("Can't add a group as a child to its own parent or a parent of its parent or ...");
}
if (_groupStore.Contains(parent, childGroup))
{
throw new ArgumentException("Cannot add item to group since it is already a member of that group.");
}
parent.Add(childGroup);
_groupStore.AddItem(parent, childGroup);
}
else
{
if (childGroup != null)
{
throw new ArgumentException("The database has a text and group with the same name. That shouldn't happen.");
}
if (_groupStore.Contains(parent, childText))
{
throw new ArgumentException("Cannot add item to group since it is already a member of that group.");
}
parent.Add(childText);
_groupStore.AddItem(parent, childText);
}
}
public IGroupModel GetOne(Expression <Func <Grouping, bool> > criteria)
{
Grouping group = _db.Groupings.FirstOrDefault(criteria);
if (group == null)
{
return(null);
}
IGroupModel output = _modelFactory.GetGroupModel(group.Name, UniversalConstants.CountSize);
IQueryable <int> TextIds = _db.Texts.Join(
_db.Text_Grouping,
text => text.Id,
text_grouping => text_grouping.TextId,
(text, text_grouping) => new { TextId = text_grouping.TextId, GroupingId = text_grouping.GroupingId }
).Where(x => x.GroupingId == group.Id)
.Select(x => (int)x.TextId);
foreach (Text text in _db.Texts.Where(x => TextIds.Contains((int)x.Id)))
{
ITextModel textModel = _textStore.GetOne(x => x.Id == text.Id);
if (textModel == null)
{
throw new ArgumentException("Cannot get group since it contains a reference to a nonexistant text.");
}
output.Add(textModel);
}
foreach (Grouping_Grouping groupGroup in _db.Grouping_Grouping.Where(x => x.ParentId == group.Id))
{
IGroupModel groupModel = GetOne(x => x.Id == groupGroup.ChildId);
if (groupModel == null)
{
throw new ArgumentException("Cannot get group since it contains a reference to a nonexistant child group.");
}
output.Add(groupModel);
}
return(output);
}
public void AddGroupToItself()
{
groupOne.Add(groupOne);
}