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: / var / canvas / app / models / quizzes /
Filename : outstanding_quiz_submission_manager.rb
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# frozen_string_literal: true

#
# Copyright (C) 2014 - present Instructure, Inc.
#
# This file is part of Canvas.
#
# Canvas is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the Free
# Software Foundation, version 3 of the License.
#
# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Outstanding Quiz Submissions Manager
#
# API for accessing quiz submissions which we term "outstanding" in that they are
# unsubmitted, started, and overdue.
#
# These submissions can be found by #find_by_quiz, at the
# API level, and graded internally by #grade_by_course
# or at the API by #grade_by_ids
#
module Quizzes
  class OutstandingQuizSubmissionManager
    def initialize(quiz)
      @quiz = quiz
    end

    def self.grade_by_course(course)
      Quizzes::QuizSubmission.where("quizzes.context_id =?", course.id)
                             .where(user: course.gradable_students)
                             .eager_load(:quiz)
                             .needs_grading
                             .each do |quiz_submission|
        Quizzes::SubmissionGrader.new(quiz_submission).grade_submission({
                                                                          finished_at: quiz_submission.finished_at_fallback
                                                                        })
      end
    end

    def grade_by_ids(quiz_submission_ids)
      quiz_submissions = @quiz.quiz_submissions.where(id: quiz_submission_ids)
      quiz_submissions.select(&:needs_grading?).each do |quiz_submission|
        Quizzes::SubmissionGrader.new(quiz_submission).grade_submission({
                                                                          finished_at: quiz_submission.finished_at_fallback
                                                                        })
      end
    end

    def find_by_quiz
      Quizzes::QuizSubmission.where(quiz_id: @quiz).preload(:user).needs_grading
    end
  end
end