class FactoryBot::AttributeAssigner

# File lib/factory_bot/attribute_assigner.rb, line 4
def initialize(evaluator, build_class, &instance_builder)
  @build_class = build_class
  @instance_builder = instance_builder
  @evaluator = evaluator
  @attribute_list = evaluator.class.attribute_list
  @attribute_names_assigned = []
end

# File lib/factory_bot/attribute_assigner.rb, line 24
def hash
  @evaluator.instance = build_hash

  attributes_to_set_on_hash.each_with_object({}) do |attribute, result|
    result[attribute] = get(attribute)
  end
end

# File lib/factory_bot/attribute_assigner.rb, line 13
def object
  @evaluator.instance = build_class_instance
  build_class_instance.tap do |instance|
    attributes_to_set_on_instance.each do |attribute|
      instance.public_send(:"#{attribute}=", get(attribute))
      @attribute_names_assigned << attribute
    end
  end
end

# File lib/factory_bot/attribute_assigner.rb, line 93
def association_names
  @attribute_list.associations.names
end

# File lib/factory_bot/attribute_assigner.rb, line 101
def attribute_names
  @attribute_list.names
end

# File lib/factory_bot/attribute_assigner.rb, line 110
def attribute_names_overriden_by_alias
  @attribute_list
    .non_ignored
    .flat_map { |attribute|
      override_names.map do |override|
        attribute.name if ignorable_alias?(attribute, override)
      end
    }
    .compact
end

# File lib/factory_bot/attribute_assigner.rb, line 75
def attribute_names_to_assign
  @attribute_names_to_assign ||= begin
    # start a list of candidates containing non-transient attributes and overrides
    assignment_candidates = non_ignored_attribute_names + override_names
    # then remove any transient attributes (potentially reintroduced by the overrides),
    # and remove ignorable aliased attributes from the candidate list
    assignment_candidates - ignored_attribute_names - attribute_names_overriden_by_alias
  end
end

# File lib/factory_bot/attribute_assigner.rb, line 70
def attributes_to_set_on_hash
  attribute_names_to_assign - association_names
end

# File lib/factory_bot/attribute_assigner.rb, line 66
def attributes_to_set_on_instance
  (attribute_names_to_assign - @attribute_names_assigned - methods_invoked_on_evaluator).uniq
end

# File lib/factory_bot/attribute_assigner.rb, line 54
def build_class_instance
  @build_class_instance ||= method_tracking_evaluator.instance_exec(&@instance_builder)
end

# File lib/factory_bot/attribute_assigner.rb, line 58
def build_hash
  @build_hash ||= NullObject.new(hash_instance_methods_to_respond_to)
end

# File lib/factory_bot/attribute_assigner.rb, line 43
def decorated_evaluator
  Decorator::NewConstructor.new(
    Decorator::InvocationTracker.new(@evaluator),
    @build_class
  )
end

# File lib/factory_bot/attribute_assigner.rb, line 62
def get(attribute_name)
  @evaluator.send(attribute_name)
end

# File lib/factory_bot/attribute_assigner.rb, line 105
def hash_instance_methods_to_respond_to
  attribute_names + override_names + @build_class.instance_methods
end

# File lib/factory_bot/attribute_assigner.rb, line 128
def ignorable_alias?(attribute, override)
  return false unless attribute.alias_for?(override)

  # The attribute alias should be ignored when the override interrupts an association
  return true if override_interrupts_association?(attribute, override)

  # Remaining aliases should be ignored when the override does not match a declared attribute.
  # An override which is an alias to a declared attribute should not interrupt the aliased
  # attribute and interrupt only the attribute with a matching name. This workaround allows a
  # factory to declare both <attribute> and <attribute>_id as separate and distinct attributes.
  !override_matches_declared_attribute?(override)
end

# File lib/factory_bot/attribute_assigner.rb, line 89
def ignored_attribute_names
  @attribute_list.ignored.names
end

# File lib/factory_bot/attribute_assigner.rb, line 36
def method_tracking_evaluator
  @method_tracking_evaluator ||= Decorator::AttributeHash.new(
    decorated_evaluator,
    attribute_names_to_assign
  )
end

# File lib/factory_bot/attribute_assigner.rb, line 50
def methods_invoked_on_evaluator
  method_tracking_evaluator.__invoked_methods__
end

# File lib/factory_bot/attribute_assigner.rb, line 85
def non_ignored_attribute_names
  @attribute_list.non_ignored.names
end

# File lib/factory_bot/attribute_assigner.rb, line 152
def override_interrupts_association?(aliased_attribute, override)
  (aliased_attribute.association? || association_names.include?(override)) &&
    aliased_attribute.name != override
end

# File lib/factory_bot/attribute_assigner.rb, line 164
def override_matches_declared_attribute?(override)
  attribute_names.include?(override)
end

# File lib/factory_bot/attribute_assigner.rb, line 97
def override_names
  @evaluator.__override_names__
end