Contents

module Stockman
  module Logic
    class Product
      class StockLevelsCollection
        include Enumerable

        attr_reader :product_id

        def initialize(product_id)
          @product_id = product_id.to_i
        end

        def sellables
          @sellables ||= SellablesCollection.new(product_id)
        end

        def stock_levels
          @stock_levels ||= load_stock_levels
        end

        def warehouse_ids
          @warehouse_ids ||= load_warehouse_ids
        end

        def each
          stock_levels.each{ |stock_level| yield stock_level }
        end

        def empty?
          stock_levels.empty?
        end

        def [](warehouse_id)
          find_by_warehouse(warehouse_id)
        end

        def find_by_warehouse(warehouse_id)
          stock_levels.detect{ |stock_level| stock_level.warehouse_id == warehouse_id }
        end

        private

        def load_warehouse_ids
          sellables.map(&:warehouse_ids).flatten.uniq
        end

        def load_stock_levels
          warehouse_ids.inject([]) do |memo, warehouse_id|
            memo << StockLevel.new(sellables, warehouse_id)
          end
        end
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
stockman-logic-0.1.1	lib/stockman/logic/product/stock_levels_collection.rb
stockman-logic-0.1.0	lib/stockman/logic/product/stock_levels_collection.rb