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692 lines
29 KiB
692 lines
29 KiB
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Data provider.
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*
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* @package core_badges
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* @copyright 2018 Frédéric Massart
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* @author Frédéric Massart <fred@branchup.tech>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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namespace core_badges\privacy;
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defined('MOODLE_INTERNAL') || die();
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use badge;
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use context;
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use context_course;
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use context_helper;
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use context_system;
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use context_user;
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use core_text;
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use core_privacy\local\metadata\collection;
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use core_privacy\local\request\approved_contextlist;
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use core_privacy\local\request\transform;
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use core_privacy\local\request\writer;
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use core_privacy\local\request\userlist;
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use core_privacy\local\request\approved_userlist;
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require_once($CFG->libdir . '/badgeslib.php');
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/**
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* Data provider class.
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*
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* @package core_badges
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* @copyright 2018 Frédéric Massart
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* @author Frédéric Massart <fred@branchup.tech>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class provider implements
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\core_privacy\local\metadata\provider,
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\core_privacy\local\request\core_userlist_provider,
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\core_privacy\local\request\subsystem\provider {
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/**
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* Returns metadata.
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*
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* @param collection $collection The initialised collection to add items to.
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* @return collection A listing of user data stored through this system.
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*/
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public static function get_metadata(collection $collection) : collection {
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$collection->add_database_table('badge', [
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'usercreated' => 'privacy:metadata:badge:usercreated',
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'usermodified' => 'privacy:metadata:badge:usermodified',
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'timecreated' => 'privacy:metadata:badge:timecreated',
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'timemodified' => 'privacy:metadata:badge:timemodified',
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], 'privacy:metadata:badge');
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$collection->add_database_table('badge_issued', [
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'userid' => 'privacy:metadata:issued:userid',
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'dateissued' => 'privacy:metadata:issued:dateissued',
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'dateexpire' => 'privacy:metadata:issued:dateexpire',
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], 'privacy:metadata:issued');
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$collection->add_database_table('badge_criteria_met', [
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'userid' => 'privacy:metadata:criteriamet:userid',
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'datemet' => 'privacy:metadata:criteriamet:datemet',
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], 'privacy:metadata:criteriamet');
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$collection->add_database_table('badge_manual_award', [
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'recipientid' => 'privacy:metadata:manualaward:recipientid',
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'issuerid' => 'privacy:metadata:manualaward:issuerid',
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'issuerrole' => 'privacy:metadata:manualaward:issuerrole',
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'datemet' => 'privacy:metadata:manualaward:datemet',
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], 'privacy:metadata:manualaward');
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$collection->add_database_table('badge_backpack', [
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'userid' => 'privacy:metadata:backpack:userid',
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'email' => 'privacy:metadata:backpack:email',
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'externalbackpackid' => 'privacy:metadata:backpack:externalbackpackid',
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'backpackuid' => 'privacy:metadata:backpack:backpackuid',
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// The columns autosync and password are not used.
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], 'privacy:metadata:backpack');
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$collection->add_external_location_link('backpacks', [
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'name' => 'privacy:metadata:external:backpacks:badge',
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'description' => 'privacy:metadata:external:backpacks:description',
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'image' => 'privacy:metadata:external:backpacks:image',
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'url' => 'privacy:metadata:external:backpacks:url',
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'issuer' => 'privacy:metadata:external:backpacks:issuer',
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], 'privacy:metadata:external:backpacks');
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return $collection;
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}
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/**
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* Get the list of contexts that contain user information for the specified user.
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*
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* @param int $userid The user to search.
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* @return contextlist $contextlist The contextlist containing the list of contexts used in this plugin.
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*/
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public static function get_contexts_for_userid(int $userid) : \core_privacy\local\request\contextlist {
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$contextlist = new \core_privacy\local\request\contextlist();
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// Find the modifications we made on badges (course & system).
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$sql = "
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SELECT ctx.id
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FROM {badge} b
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JOIN {context} ctx
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ON (b.type = :typecourse AND b.courseid = ctx.instanceid AND ctx.contextlevel = :courselevel)
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OR (b.type = :typesite AND ctx.id = :syscontextid)
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WHERE b.usermodified = :userid1
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OR b.usercreated = :userid2";
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$params = [
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'courselevel' => CONTEXT_COURSE,
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'syscontextid' => SYSCONTEXTID,
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'typecourse' => BADGE_TYPE_COURSE,
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'typesite' => BADGE_TYPE_SITE,
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'userid1' => $userid,
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'userid2' => $userid,
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];
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$contextlist->add_from_sql($sql, $params);
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// Find where we've manually awarded a badge (recipient user context).
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$sql = "
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SELECT ctx.id
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FROM {badge_manual_award} bma
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JOIN {context} ctx
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ON ctx.instanceid = bma.recipientid
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AND ctx.contextlevel = :userlevel
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WHERE bma.issuerid = :userid";
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$params = [
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'userlevel' => CONTEXT_USER,
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'userid' => $userid,
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];
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$contextlist->add_from_sql($sql, $params);
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// Now find where there is real user data (user context).
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$sql = "
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SELECT ctx.id
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FROM {context} ctx
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LEFT JOIN {badge_manual_award} bma
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ON bma.recipientid = ctx.instanceid
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LEFT JOIN {badge_issued} bi
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ON bi.userid = ctx.instanceid
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LEFT JOIN {badge_criteria_met} bcm
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ON bcm.userid = ctx.instanceid
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LEFT JOIN {badge_backpack} bb
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ON bb.userid = ctx.instanceid
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WHERE ctx.contextlevel = :userlevel
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AND ctx.instanceid = :userid
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AND (bma.id IS NOT NULL
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OR bi.id IS NOT NULL
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OR bcm.id IS NOT NULL
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OR bb.id IS NOT NULL)";
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$params = [
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'userlevel' => CONTEXT_USER,
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'userid' => $userid,
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];
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$contextlist->add_from_sql($sql, $params);
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return $contextlist;
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}
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/**
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* Get the list of users within a specific context.
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*
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* @param userlist $userlist The userlist containing the list of users who have data in this context/plugin combination.
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*/
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public static function get_users_in_context(userlist $userlist) {
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$context = $userlist->get_context();
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$allowedcontexts = [
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CONTEXT_COURSE,
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CONTEXT_SYSTEM,
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CONTEXT_USER
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];
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if (!in_array($context->contextlevel, $allowedcontexts)) {
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return;
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}
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if ($context->contextlevel == CONTEXT_COURSE || $context->contextlevel == CONTEXT_SYSTEM) {
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// Find the modifications we made on badges (course & system).
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if ($context->contextlevel == CONTEXT_COURSE) {
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$extrawhere = 'AND b.courseid = :courseid';
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$params = [
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'badgetype' => BADGE_TYPE_COURSE,
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'courseid' => $context->instanceid
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];
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} else {
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$extrawhere = '';
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$params = ['badgetype' => BADGE_TYPE_SITE];
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}
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$sql = "SELECT b.usermodified, b.usercreated
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FROM {badge} b
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WHERE b.type = :badgetype
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$extrawhere";
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$userlist->add_from_sql('usermodified', $sql, $params);
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$userlist->add_from_sql('usercreated', $sql, $params);
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}
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if ($context->contextlevel == CONTEXT_USER) {
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// Find where we've manually awarded a badge (recipient user context).
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$params = [
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'instanceid' => $context->instanceid
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];
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$sql = "SELECT issuerid, recipientid
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FROM {badge_manual_award}
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WHERE recipientid = :instanceid";
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$userlist->add_from_sql('issuerid', $sql, $params);
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$userlist->add_from_sql('recipientid', $sql, $params);
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$sql = "SELECT userid
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FROM {badge_issued}
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WHERE userid = :instanceid";
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$userlist->add_from_sql('userid', $sql, $params);
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$sql = "SELECT userid
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FROM {badge_criteria_met}
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WHERE userid = :instanceid";
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$userlist->add_from_sql('userid', $sql, $params);
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$sql = "SELECT userid
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FROM {badge_backpack}
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WHERE userid = :instanceid";
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$userlist->add_from_sql('userid', $sql, $params);
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}
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}
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/**
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* Export all user data for the specified user, in the specified contexts.
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*
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* @param approved_contextlist $contextlist The approved contexts to export information for.
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*/
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public static function export_user_data(approved_contextlist $contextlist) {
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global $DB;
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$userid = $contextlist->get_user()->id;
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$contexts = array_reduce($contextlist->get_contexts(), function($carry, $context) {
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$level = $context->contextlevel;
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if ($level == CONTEXT_USER || $level == CONTEXT_COURSE) {
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$carry[$level][] = $context->instanceid;
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} else if ($level == CONTEXT_SYSTEM) {
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$carry[$level] = SYSCONTEXTID;
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}
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return $carry;
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}, [
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CONTEXT_COURSE => [],
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CONTEXT_USER => [],
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CONTEXT_SYSTEM => null,
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]);
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$path = [get_string('badges', 'core_badges')];
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$ctxfields = context_helper::get_preload_record_columns_sql('ctx');
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// Export the badges we've created or modified.
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if (!empty($contexts[CONTEXT_SYSTEM]) || !empty($contexts[CONTEXT_COURSE])) {
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$sqls = [];
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$params = [];
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if (!empty($contexts[CONTEXT_SYSTEM])) {
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$sqls[] = "b.type = :typesite";
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$params['typesite'] = BADGE_TYPE_SITE;
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}
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if (!empty($contexts[CONTEXT_COURSE])) {
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list($insql, $inparams) = $DB->get_in_or_equal($contexts[CONTEXT_COURSE], SQL_PARAMS_NAMED);
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$sqls[] = "(b.type = :typecourse AND b.courseid $insql)";
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$params = array_merge($params, ['typecourse' => BADGE_TYPE_COURSE], $inparams);
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}
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$sqlwhere = '(' . implode(' OR ', $sqls) . ')';
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$sql = "
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SELECT b.*, COALESCE(b.courseid, 0) AS normalisedcourseid
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FROM {badge} b
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WHERE (b.usermodified = :userid1 OR b.usercreated = :userid2)
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AND $sqlwhere
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ORDER BY b.courseid, b.id";
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$params = array_merge($params, ['userid1' => $userid, 'userid2' => $userid]);
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$recordset = $DB->get_recordset_sql($sql, $params);
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static::recordset_loop_and_export($recordset, 'normalisedcourseid', [], function($carry, $record) use ($userid) {
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$carry[] = [
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'name' => $record->name,
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'created_on' => transform::datetime($record->timecreated),
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'created_by_you' => transform::yesno($record->usercreated == $userid),
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'modified_on' => transform::datetime($record->timemodified),
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'modified_by_you' => transform::yesno($record->usermodified == $userid),
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];
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return $carry;
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}, function($courseid, $data) use ($path) {
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$context = $courseid ? context_course::instance($courseid) : context_system::instance();
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writer::with_context($context)->export_data($path, (object) ['badges' => $data]);
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});
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}
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// Export the badges we've manually awarded.
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if (!empty($contexts[CONTEXT_USER])) {
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list($insql, $inparams) = $DB->get_in_or_equal($contexts[CONTEXT_USER], SQL_PARAMS_NAMED);
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$sql = "
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SELECT bma.id, bma.recipientid, bma.datemet, b.name, b.courseid,
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r.id AS roleid,
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r.name AS rolename,
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r.shortname AS roleshortname,
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r.archetype AS rolearchetype,
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$ctxfields
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FROM {badge_manual_award} bma
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JOIN {badge} b
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ON b.id = bma.badgeid
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JOIN {role} r
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ON r.id = bma.issuerrole
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JOIN {context} ctx
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ON (COALESCE(b.courseid, 0) > 0 AND ctx.instanceid = b.courseid AND ctx.contextlevel = :courselevel)
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OR (COALESCE(b.courseid, 0) = 0 AND ctx.id = :syscontextid)
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WHERE bma.recipientid $insql
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AND bma.issuerid = :userid
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ORDER BY bma.recipientid, bma.id";
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$params = array_merge($inparams, [
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'courselevel' => CONTEXT_COURSE,
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'syscontextid' => SYSCONTEXTID,
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'userid' => $userid
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]);
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$recordset = $DB->get_recordset_sql($sql, $params);
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static::recordset_loop_and_export($recordset, 'recipientid', [], function($carry, $record) use ($userid) {
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// The only reason we fetch the context and role is to format the name of the role, which could be
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// different to the standard name if the badge was created in a course.
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context_helper::preload_from_record($record);
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$context = $record->courseid ? context_course::instance($record->courseid) : context_system::instance();
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$role = (object) [
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'id' => $record->roleid,
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'name' => $record->rolename,
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'shortname' => $record->roleshortname,
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'archetype' => $record->rolearchetype,
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// Mock those two fields as they do not matter.
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'sortorder' => 0,
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'description' => ''
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];
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$carry[] = [
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'name' => $record->name,
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'issued_by_you' => transform::yesno(true),
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'issued_on' => transform::datetime($record->datemet),
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'issuer_role' => role_get_name($role, $context),
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];
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return $carry;
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}, function($userid, $data) use ($path) {
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$context = context_user::instance($userid);
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writer::with_context($context)->export_related_data($path, 'manual_awards', (object) ['badges' => $data]);
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});
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}
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// Export our data.
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if (in_array($userid, $contexts[CONTEXT_USER])) {
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// Export the badges.
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$uniqueid = $DB->sql_concat_join("'-'", ['b.id', 'COALESCE(bc.id, 0)', 'COALESCE(bi.id, 0)',
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'COALESCE(bma.id, 0)', 'COALESCE(bcm.id, 0)', 'COALESCE(brb.id, 0)', 'COALESCE(ba.id, 0)']);
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$sql = "
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SELECT $uniqueid AS uniqueid, b.id,
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bi.id AS biid, bi.dateissued, bi.dateexpire, bi.uniquehash,
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bma.id AS bmaid, bma.datemet, bma.issuerid,
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bcm.id AS bcmid,
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c.fullname AS coursename,
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be.id AS beid,
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be.issuername AS beissuername,
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be.issuerurl AS beissuerurl,
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be.issueremail AS beissueremail,
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be.claimid AS beclaimid,
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be.claimcomment AS beclaimcomment,
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be.dateissued AS bedateissued,
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brb.id as rbid,
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brb.badgeid as rbbadgeid,
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brb.relatedbadgeid as rbrelatedbadgeid,
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ba.id as baid,
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ba.targetname as batargetname,
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ba.targeturl as batargeturl,
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ba.targetdescription as batargetdescription,
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ba.targetframework as batargetframework,
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ba.targetcode as batargetcode,
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$ctxfields
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FROM {badge} b
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LEFT JOIN {badge_issued} bi
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ON bi.badgeid = b.id
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AND bi.userid = :userid1
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LEFT JOIN {badge_related} brb
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ON ( b.id = brb.badgeid OR b.id = brb.relatedbadgeid )
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LEFT JOIN {badge_alignment} ba
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ON ( b.id = ba.badgeid )
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LEFT JOIN {badge_endorsement} be
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ON be.badgeid = b.id
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LEFT JOIN {badge_manual_award} bma
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ON bma.badgeid = b.id
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AND bma.recipientid = :userid2
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LEFT JOIN {badge_criteria} bc
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ON bc.badgeid = b.id
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LEFT JOIN {badge_criteria_met} bcm
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ON bcm.critid = bc.id
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AND bcm.userid = :userid3
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LEFT JOIN {course} c
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ON c.id = b.courseid
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AND b.type = :typecourse
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LEFT JOIN {context} ctx
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ON ctx.instanceid = c.id
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AND ctx.contextlevel = :courselevel
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WHERE bi.id IS NOT NULL
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OR bma.id IS NOT NULL
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OR bcm.id IS NOT NULL
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ORDER BY b.id";
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$params = [
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'userid1' => $userid,
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'userid2' => $userid,
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'userid3' => $userid,
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'courselevel' => CONTEXT_COURSE,
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'typecourse' => BADGE_TYPE_COURSE,
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];
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$recordset = $DB->get_recordset_sql($sql, $params);
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static::recordset_loop_and_export($recordset, 'id', null, function($carry, $record) use ($userid) {
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$badge = new badge($record->id);
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// Export details of the badge.
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if ($carry === null) {
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$carry = [
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'name' => $badge->name,
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'version' => $badge->version,
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'language' => $badge->language,
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'imageauthorname' => $badge->imageauthorname,
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'imageauthoremail' => $badge->imageauthoremail,
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'imageauthorurl' => $badge->imageauthorurl,
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'imagecaption' => $badge->imagecaption,
|
|
'issued' => null,
|
|
'manual_award' => null,
|
|
'criteria_met' => [],
|
|
'endorsement' => null,
|
|
];
|
|
|
|
if ($badge->type == BADGE_TYPE_COURSE) {
|
|
context_helper::preload_from_record($record);
|
|
$carry['course'] = format_string($record->coursename, true, ['context' => $badge->get_context()]);
|
|
}
|
|
|
|
if (!empty($record->beid)) {
|
|
$carry['endorsement'] = [
|
|
'issuername' => $record->beissuername,
|
|
'issuerurl' => $record->beissuerurl,
|
|
'issueremail' => $record->beissueremail,
|
|
'claimid' => $record->beclaimid,
|
|
'claimcomment' => $record->beclaimcomment,
|
|
'dateissued' => $record->bedateissued ? transform::datetime($record->bedateissued) : null
|
|
];
|
|
}
|
|
|
|
if (!empty($record->biid)) {
|
|
$carry['issued'] = [
|
|
'issued_on' => transform::datetime($record->dateissued),
|
|
'expires_on' => $record->dateexpire ? transform::datetime($record->dateexpire) : null,
|
|
'unique_hash' => $record->uniquehash,
|
|
];
|
|
}
|
|
|
|
if (!empty($record->bmaid)) {
|
|
$carry['manual_award'] = [
|
|
'awarded_on' => transform::datetime($record->datemet),
|
|
'issuer' => transform::user($record->issuerid)
|
|
];
|
|
}
|
|
}
|
|
if (!empty($record->rbid)) {
|
|
if (empty($carry['related_badge'])) {
|
|
$carry['related_badge'] = [];
|
|
}
|
|
$rbid = $record->rbbadgeid;
|
|
if ($rbid == $record->id) {
|
|
$rbid = $record->rbrelatedbadgeid;
|
|
}
|
|
$exists = false;
|
|
foreach ($carry['related_badge'] as $related) {
|
|
if ($related['badgeid'] == $rbid) {
|
|
$exists = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!$exists) {
|
|
$relatedbadge = new badge($rbid);
|
|
$carry['related_badge'][] = [
|
|
'badgeid' => $rbid,
|
|
'badgename' => $relatedbadge->name
|
|
];
|
|
}
|
|
}
|
|
|
|
if (!empty($record->baid)) {
|
|
if (empty($carry['alignment'])) {
|
|
$carry['alignment'] = [];
|
|
}
|
|
$exists = false;
|
|
$newalignment = [
|
|
'targetname' => $record->batargetname,
|
|
'targeturl' => $record->batargeturl,
|
|
'targetdescription' => $record->batargetdescription,
|
|
'targetframework' => $record->batargetframework,
|
|
'targetcode' => $record->batargetcode,
|
|
];
|
|
foreach ($carry['alignment'] as $alignment) {
|
|
if ($alignment == $newalignment) {
|
|
$exists = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!$exists) {
|
|
$carry['alignment'][] = $newalignment;
|
|
}
|
|
}
|
|
|
|
// Export the details of the criteria met.
|
|
// We only do that once, when we find that a least one criteria was met.
|
|
// This is heavily based on the logic present in core_badges_renderer::render_issued_badge.
|
|
if (!empty($record->bcmid) && empty($carry['criteria_met'])) {
|
|
|
|
$agg = $badge->get_aggregation_methods();
|
|
$evidenceids = array_map(function($record) {
|
|
return $record->critid;
|
|
}, $badge->get_criteria_completions($userid));
|
|
|
|
$criteria = $badge->criteria;
|
|
unset($criteria[BADGE_CRITERIA_TYPE_OVERALL]);
|
|
|
|
$items = [];
|
|
foreach ($criteria as $type => $c) {
|
|
if (in_array($c->id, $evidenceids)) {
|
|
$details = $c->get_details(true);
|
|
if (count($c->params) == 1) {
|
|
$items[] = get_string('criteria_descr_single_' . $type , 'core_badges') . ' ' . $details;
|
|
} else {
|
|
$items[] = get_string('criteria_descr_' . $type , 'core_badges',
|
|
core_text::strtoupper($agg[$badge->get_aggregation_method($type)])) . ' ' . $details;
|
|
}
|
|
}
|
|
}
|
|
$carry['criteria_met'] = $items;
|
|
}
|
|
return $carry;
|
|
}, function($badgeid, $data) use ($path, $userid) {
|
|
$path = array_merge($path, ["{$data['name']} ({$badgeid})"]);
|
|
$writer = writer::with_context(context_user::instance($userid));
|
|
$writer->export_data($path, (object) $data);
|
|
$writer->export_area_files($path, 'badges', 'userbadge', $badgeid);
|
|
});
|
|
|
|
// Export the backpacks.
|
|
$data = [];
|
|
$recordset = $DB->get_recordset_select('badge_backpack', 'userid = :userid', ['userid' => $userid]);
|
|
foreach ($recordset as $record) {
|
|
$data[] = [
|
|
'email' => $record->email,
|
|
'externalbackpackid' => $record->externalbackpackid,
|
|
'uid' => $record->backpackuid
|
|
];
|
|
}
|
|
$recordset->close();
|
|
if (!empty($data)) {
|
|
writer::with_context(context_user::instance($userid))->export_related_data($path, 'backpacks',
|
|
(object) ['backpacks' => $data]);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Delete all data for all users in the specified context.
|
|
*
|
|
* @param context $context The specific context to delete data for.
|
|
*/
|
|
public static function delete_data_for_all_users_in_context(context $context) {
|
|
// We cannot delete the course or system data as it is needed by the system.
|
|
if ($context->contextlevel != CONTEXT_USER) {
|
|
return;
|
|
}
|
|
|
|
// Delete all the user data.
|
|
static::delete_user_data($context->instanceid);
|
|
}
|
|
|
|
/**
|
|
* Delete multiple users within a single context.
|
|
*
|
|
* @param approved_userlist $userlist The approved context and user information to delete information for.
|
|
*/
|
|
public static function delete_data_for_users(approved_userlist $userlist) {
|
|
$context = $userlist->get_context();
|
|
|
|
if (!in_array($context->instanceid, $userlist->get_userids())) {
|
|
return;
|
|
}
|
|
|
|
if ($context->contextlevel == CONTEXT_USER) {
|
|
// We can only delete our own data in the user context, nothing in course or system.
|
|
static::delete_user_data($context->instanceid);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Delete all user data for the specified user, in the specified contexts.
|
|
*
|
|
* @param approved_contextlist $contextlist The approved contexts and user information to delete information for.
|
|
*/
|
|
public static function delete_data_for_user(approved_contextlist $contextlist) {
|
|
$userid = $contextlist->get_user()->id;
|
|
foreach ($contextlist->get_contexts() as $context) {
|
|
if ($context->contextlevel == CONTEXT_USER && $context->instanceid == $userid) {
|
|
// We can only delete our own data in the user context, nothing in course or system.
|
|
static::delete_user_data($userid);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Delete all the data for a user.
|
|
*
|
|
* @param int $userid The user ID.
|
|
* @return void
|
|
*/
|
|
protected static function delete_user_data($userid) {
|
|
global $DB;
|
|
|
|
// Delete the stuff.
|
|
$DB->delete_records('badge_manual_award', ['recipientid' => $userid]);
|
|
$DB->delete_records('badge_criteria_met', ['userid' => $userid]);
|
|
$DB->delete_records('badge_issued', ['userid' => $userid]);
|
|
|
|
// Delete the backpacks and related stuff.
|
|
$backpackids = $DB->get_fieldset_select('badge_backpack', 'id', 'userid = :userid', ['userid' => $userid]);
|
|
if (!empty($backpackids)) {
|
|
list($insql, $inparams) = $DB->get_in_or_equal($backpackids, SQL_PARAMS_NAMED);
|
|
$DB->delete_records_select('badge_external', "backpackid $insql", $inparams);
|
|
$DB->delete_records_select('badge_backpack', "id $insql", $inparams);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Loop and export from a recordset.
|
|
*
|
|
* @param \moodle_recordset $recordset The recordset.
|
|
* @param string $splitkey The record key to determine when to export.
|
|
* @param mixed $initial The initial data to reduce from.
|
|
* @param callable $reducer The function to return the dataset, receives current dataset, and the current record.
|
|
* @param callable $export The function to export the dataset, receives the last value from $splitkey and the dataset.
|
|
* @return void
|
|
*/
|
|
protected static function recordset_loop_and_export(\moodle_recordset $recordset, $splitkey, $initial,
|
|
callable $reducer, callable $export) {
|
|
|
|
$data = $initial;
|
|
$lastid = null;
|
|
|
|
foreach ($recordset as $record) {
|
|
if ($lastid !== null && $record->{$splitkey} != $lastid) {
|
|
$export($lastid, $data);
|
|
$data = $initial;
|
|
}
|
|
$data = $reducer($data, $record);
|
|
$lastid = $record->{$splitkey};
|
|
}
|
|
$recordset->close();
|
|
|
|
if ($lastid !== null) {
|
|
$export($lastid, $data);
|
|
}
|
|
}
|
|
}
|
|
|