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✏️ Editing: no_recent_accesses.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * No recent accesses.
 *
 * @package   core_course
 * @copyright 2019 David Monllaó {@link http://www.davidmonllao.com}
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

namespace core_course\analytics\target;

defined('MOODLE_INTERNAL') || die();

/**
     * Machine learning backends are not required to predict.
     *
     * @return bool
     */
    public static function based_on_assumptions() {
        return true;
    }

/**
     * Returns the name.
     *
     * If there is a corresponding '_help' string this will be shown as well.
     *
     * @return \lang_string
     */
    public static function get_name(): \lang_string {
        return new \lang_string('target:norecentaccesses', 'course');
    }

/**
     * Returns the body message for the insight.
     *
     * @param  \context     $context
     * @param  string       $contextname
     * @param  \stdClass    $user
     * @param  \moodle_url  $insighturl
     * @return array                        The plain text message and the HTML message
     */
    public function get_insight_body(\context $context, string $contextname, \stdClass $user, \moodle_url $insighturl): array {
        global $OUTPUT;

$a = (object)['coursename' => $contextname, 'userfirstname' => $user->firstname];
        $fullmessage = get_string('norecentaccessesinfomessage', 'course', $a) . PHP_EOL . PHP_EOL . $insighturl->out(false);
        $fullmessagehtml = $OUTPUT->render_from_template('core_analytics/insight_info_message',
            ['url' => $insighturl->out(false), 'insightinfomessage' => get_string('norecentaccessesinfomessage', 'course', $a)]
        );

return [$fullmessage, $fullmessagehtml];
    }

/**
     * Only past stuff whose start matches the course start.
     *
     * @param  \core_analytics\local\time_splitting\base $timesplitting
     * @return bool
     */
    public function can_use_timesplitting(\core_analytics\local\time_splitting\base $timesplitting): bool {
        return ($timesplitting instanceof \core_analytics\local\time_splitting\past_periodic);
    }

/**
     * Discards courses that are not yet ready to be used for prediction.
     *
     * @param \core_analytics\analysable $course
     * @param bool $fortraining
     * @return true|string
     */
    public function is_valid_analysable(\core_analytics\analysable $course, $fortraining = true) {

if (!$course->was_started()) {
            return get_string('coursenotyetstarted', 'course');
        }

if (!$this->students = $course->get_students()) {
            return get_string('nocoursestudents', 'course');
        }

if (!$fortraining && !$course->get_course_data()->visible) {
            return get_string('hiddenfromstudents');
        }

if ($course->get_end() && $course->get_end() < $course->get_start()) {
            return get_string('errorendbeforestart', 'course');
        }

// Finished courses can not be used to get predictions.
        if (!$fortraining && $course->is_finished()) {
            return get_string('coursealreadyfinished', 'course');
        }

return true;
    }

/**
     * Do the user has any read action in the course?
     *
     * @param int $sampleid
     * @param \core_analytics\analysable $analysable
     * @param int $starttime
     * @param int $endtime
     * @return float|null 0 -> accesses, 1 -> no accesses.
     */
    protected function calculate_sample($sampleid, \core_analytics\analysable $analysable, $starttime = false, $endtime = false) {

if (!$this->enrolment_active_during_analysis_time($sampleid, $starttime, $endtime)) {
            // We should not use this sample as the analysis results could be misleading.
            return null;
        }

$readactions = $this->retrieve('\core\analytics\indicator\any_course_access', $sampleid);
        if ($readactions == \core\analytics\indicator\any_course_access::get_min_value()) {
            return 1;
        }
        return 0;
    }
}

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