class CKEditor5::Rails::Presets::ToolbarBuilder

def append(*appended_items, after: nil)
  if after
    index = find_item_index(after)
    raise ArgumentError, "Item '#{after}' not found in array" unless index
    items.insert(index + 1, *appended_items)
  else
    items.push(*appended_items)
  end
end

def break_line
  :-
end

def find_group(name)
  items.find { |item| item.is_a?(ToolbarGroupItem) && item.name == name }
end

def find_item_index(item)
  items.find_index { |existing_item| item_matches?(existing_item, item) }
end

def group(name, **options, &block)
  group = ToolbarGroupItem.new(name, [], **options)
  group.instance_eval(&block) if block_given?
  items << group
  group
end

def initialize(items)
  @items = items
end

def item_matches?(existing_item, item)
  if existing_item.is_a?(ToolbarGroupItem)
    existing_item.name == item
  else
    existing_item == item
  end
end

def prepend(*prepended_items, before: nil)
  if before
    index = find_item_index(before)
    raise ArgumentError, "Item '#{before}' not found in array" unless index
    items.insert(index, *prepended_items)
  else
    items.insert(0, *prepended_items)
  end
end

def remove(*removed_items)
  items.delete_if do |existing_item|
    removed_items.any? { |item_to_remove| item_matches?(existing_item, item_to_remove) }
  end
end

def remove_group(name)
  items.delete_if { |item| item.is_a?(ToolbarGroupItem) && item.name == name }
end

def separator
  :|
end