# frozen_string_literal: true

module Decidim
  module Elections
    # The data store for an Answer in the Decidim::Elections component. It stores a
    # title, description and related resources and attachments.
    class Answer < ApplicationRecord
      include Decidim::Resourceable
      include Decidim::HasAttachments
      include Decidim::HasAttachmentCollections
      include Traceable
      include Loggable

      delegate :organization, :participatory_space, to: :component

      belongs_to :question, foreign_key: "decidim_elections_question_id", class_name: "Decidim::Elections::Question", inverse_of: :answers
      has_one :election, through: :question, foreign_key: "decidim_elections_election_id", class_name: "Decidim::Elections::Election"
      has_one :component, through: :election, foreign_key: "decidim_component_id", class_name: "Decidim::Component"
      has_many :results, foreign_key: "decidim_elections_answer_id", class_name: "Decidim::Elections::Result", dependent: :destroy

      default_scope { order(weight: :asc, id: :asc) }

      # Public: Get all the proposals related to the answer
      #
      # Returns an ActiveRecord::Relation.
      def proposals
        linked_resources(:proposals, "related_proposals")
      end

      def slug
        "answer-#{id}"
      end

      # Sum all valid results from different origins (PollingStations or BulletinBoard)
      def results_total
        @results_total ||= results.valid_answers.sum(:value)
      end

      # A result percentage relative to the question
      # Returns a Float.
      def results_percentage
        @results_percentage ||= results_total.positive? ? (results_total.to_f / question.results_total * 100.0).round : 0
      end
    end
  end
end