# frozen_string_literal: true

require "gitlab_reviewbot/gitlab"

module Danger
  module AssignStrategies
    class LeastBusyStrategy < Strategy
      def assignees(amount)
        # This doesn't fetch the review count for the users so we need to fetch it separately later
        users_in_group = fetch_users_in_group
        invalid_assignees = [fetch_author] + fetch_assigned_reviewers

        group_users_with_reviews_pending = client.users_with_pending_mr_review(project_id).filter { |u| users_in_group.include? u }
        group_users_without_reviews_pending = users_in_group.filter { |u| !group_users_with_reviews_pending.include? u }

        (group_users_with_reviews_pending + group_users_without_reviews_pending).filter { |u| !invalid_assignees.include? u }
          .sort_by(&:review_count)
          .first(amount)
      end
    end
  end
end