class LicenseAcceptance::ProductReader

def read
  logger.debug("Reading products and relationships...")
  location = get_location
  self.products = {}
  self.relationships = {}
  toml = Tomlrb.load_file(location, symbolize_keys: false)
  raise InvalidProductInfo.new(location) if toml.empty? || toml["products"].nil? || toml["relationships"].nil?
  for product in toml["products"]
    products[product["id"]] = Product.new(
      product["id"], product["pretty_name"],
      product["filename"], product["mixlib_name"],
      product["license_required_version"]
    )
  end
  for parent_id, children in toml["relationships"]
    parent = products[parent_id]
    raise UnknownParent.new(parent_id) if parent.nil?
    # Its fine to not have a relationship entry, but not fine to have
    # a relationship where the children are nil or empty.
    if children.nil? || children.empty? || !children.is_a?(Array)
      raise NoChildRelationships.new(parent)
    end
    children.map! do |child_id|
      child = products[child_id]
      raise UnknownChild.new(child_id) if child.nil?
      child
    end
    relationships[parent] = children
  end
  logger.debug("Successfully read products and relationships")
end