protected function prepare_feedback_postdata()

in classes/api/base.php [649:690]

• 34 lines of code
• 5 McCabe index (conditional complexity)

    protected function prepare_feedback_postdata($submissionid, $assign, $student, $context, $isteacher, $gradeid) {
        $boundary = hash('sha256', rand());
        $postdata = null;

        $a = new \stdClass;
        $a->assign_name = $assign->name;
        $a->student_firstname = $student->firstname;
        $a->student_lastname = $student->lastname;
        $pagetitle = get_string('feedbacktitle', 'local_onenote', $a);

        // If previously saved feedback does not exist.
        if (!$gradeid || !($files = $this->get_stored_page_data($context->id, 'feedback', $gradeid))) {
            if ($isteacher) {
                // This must be the first time teacher is looking at student's submission
                // So prepare feedback page from submission zip package.
                $files = $this->get_stored_page_data($context->id, 'submission', $submissionid);
                if ($files) {
                    // Unzip the submission and prepare postdata from it.
                    $tempfolder = $this->create_temp_folder();
                    $fp = get_file_packer('application/zip');
                    $filelist = $fp->extract_to_pathname(reset($files), $tempfolder);
                    $folder = join(DIRECTORY_SEPARATOR, array(rtrim($tempfolder, DIRECTORY_SEPARATOR), '0'));
                    $postdata = $this->create_postdata_from_folder($pagetitle, $folder, $boundary);
                } else {
                    // Student did not turn in a submission, so create an empty one.
                    $postdata = $this->create_postdata($pagetitle, $assign->intro, $context->id, $boundary);
                }
            } else {
                $errstr = get_string('errorfeedbackinstudentcontext', 'local_onenote');
                \local_onenote\utils::debug($errstr, 'prepare_feedback_postdata', $submissionid);
                throw new \moodle_exception('errorfeedbackinstudentcontext', 'local_onenote');
            }
        } else {
            // Create postdata from the zip package of teacher's feedback.
            $tempfolder = $this->create_temp_folder();
            $fp = get_file_packer('application/zip');
            $filelist = $fp->extract_to_pathname(reset($files), $tempfolder);
            $folder = join(DIRECTORY_SEPARATOR, array(rtrim($tempfolder, DIRECTORY_SEPARATOR), '0'));
            $postdata = $this->create_postdata_from_folder($pagetitle, $folder, $boundary);
        }
        return [$postdata, $boundary];
    }