app/serializers/service_field_entity.rb


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# frozen_string_literal: true

class ServiceFieldEntity < Grape::Entity
  include RequestAwareEntity
  include Gitlab::Utils::StrongMemoize

  expose :type, :name, :placeholder, :required, :choices, :checkbox_label

  expose :title do |field|
    non_empty_password?(field) ? field[:non_empty_password_title] : field[:title]
  end

  expose :help do |field|
    non_empty_password?(field) ? field[:non_empty_password_help] : field[:help]
  end

  expose :value do |field|
    value = value_for(field)

    if non_empty_password?(field)
      'true'
    elsif field[:type] == 'checkbox'
      ActiveRecord::Type::Boolean.new.deserialize(value).to_s
    else
      value
    end
  end

  private

  def service
    request.service
  end

  def value_for(field)
    strong_memoize(:value_for) do
      # field[:name] is not user input and so can assume is safe
      service.public_send(field[:name]) # rubocop:disable GitlabSecurity/PublicSend
    end
  end

  def non_empty_password?(field)
    strong_memoize(:non_empty_password) do
      field[:type] == 'password' && value_for(field).present?
    end
  end
end