class SpreeCmCommissioner::RedisStock::LineItemsCachedInventoryItemsBuilder

def cached_inventory_items
  @cached_inventory_items ||= SpreeCmCommissioner::RedisStock::CachedInventoryItemsBuilder.new(inventory_items)
                                                                                          .call
end

def call
  cached_inventory_items.group_by do |cached_inventory_item|
    line_item = line_items.find { |item| item.variant_id == cached_inventory_item.variant_id }
    line_item.id
  end
end

def initialize(line_item_ids:)
  @line_item_ids = line_item_ids
end

def inventory_items
  @inventory_items ||= line_items.flat_map(&:inventory_items)
end

def line_items
  @line_items ||= Spree::LineItem.where(id: line_item_ids).includes(:inventory_items)
end