# frozen_string_literal: true

require "active_support/concern"

module Decidim
  module Comments
    # Shared behaviour for commentable models.
    module Commentable
      extend ActiveSupport::Concern

      included do
        has_many :comment_threads, as: :root_commentable, foreign_key: "decidim_commentable_id", foreign_type: "decidim_commentable_type", class_name: "Decidim::Comments::Comment"
        has_many :comments, as: :commentable, foreign_key: "decidim_root_commentable_id", foreign_type: "decidim_root_commentable_type", class_name: "Decidim::Comments::Comment"

        # Public: Whether the object's comments are visible or not.
        def commentable?
          true
        end

        # Public: Whether the object can have new comments or not.
        def accepts_new_comments?
          true
        end

        # Public: Whether the object's comments can have alignment or not. It enables the
        # alignment selector in the add new comment form.
        def comments_have_alignment?
          false
        end

        # Public: Whether the object's comments can have have votes or not. It enables the
        # upvote and downvote buttons for comments.
        def comments_have_votes?
          false
        end

        # Public: Identifies the commentable type in the API.
        def commentable_type
          self.class.name
        end

        # Public: Defines which users will receive a notification when a comment is created.
        # This method can be overridden at each resource model to include or exclude
        # other users, eg. admins.
        # Returns: a relation of Decidim::User objects.
        def users_to_notify_on_comment_created
          Decidim::User.none
        end

        # Public: Whether the object can have new comments or not.
        def user_allowed_to_comment?(_user)
          true
        end

        # Public: Updates the comments counter cache. We have to do it these
        # way in order to properly calculate the coutner with hidden
        # comments.
        #
        # rubocop:disable Rails/SkipsModelValidations
        def update_comments_count
          comments_count = comments.not_hidden.count
          update_columns(comments_count: comments_count, updated_at: Time.current)
        end
        # rubocop:enable Rails/SkipsModelValidations
      end
    end
  end
end