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| 1 | <?php |
| 2 | // This file is part of Moodle - https://moodle.org/ |
| 3 | // |
| 4 | // Moodle is free software: you can redistribute it and/or modify |
| 5 | // it under the terms of the GNU General Public License as published by |
| 6 | // the Free Software Foundation, either version 3 of the License, or |
| 7 | // (at your option) any later version. |
| 8 | // |
| 9 | // Moodle is distributed in the hope that it will be useful, |
| 10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | // GNU General Public License for more details. |
| 13 | // |
| 14 | // You should have received a copy of the GNU General Public License |
| 15 | // along with Moodle. If not, see <https://www.gnu.org/licenses/>. |
| 16 | |
| 17 | namespace tool_autoflow\privacy; |
| 18 | |
| 19 | use core_privacy\local\metadata\collection; |
| 20 | use core_privacy\local\request\approved_contextlist; |
| 21 | use core_privacy\local\request\approved_userlist; |
| 22 | use core_privacy\local\request\contextlist; |
| 23 | use core_privacy\local\request\transform; |
| 24 | use core_privacy\local\request\userlist; |
| 25 | use core_privacy\local\request\writer; |
| 26 | |
| 27 | /** |
| 28 | * Privacy provider for tool_autoflow. |
| 29 | * |
| 30 | * Workflows and runs live in the system context. Runs reference the user the |
| 31 | * triggering event was about; workflows reference their editor and run-as user. |
| 32 | * |
| 33 | * @package tool_autoflow |
| 34 | * @copyright 2026 DevLMS <contact@devlms.com> |
| 35 | * @license https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later |
| 36 | */ |
| 37 | class provider implements |
| 38 | \core_privacy\local\metadata\provider, |
| 39 | \core_privacy\local\request\core_userlist_provider, |
| 40 | \core_privacy\local\request\plugin\provider { |
| 41 | /** |
| 42 | * Describe the data this plugin stores. |
| 43 | * |
| 44 | * @param collection $collection |
| 45 | * @return collection |
| 46 | */ |
| 47 | public static function get_metadata(collection $collection): collection { |
| 48 | $collection->add_database_table('tool_autoflow_run', [ |
| 49 | 'userid' => 'privacy:metadata:run:userid', |
| 50 | 'log' => 'privacy:metadata:run:log', |
| 51 | 'error' => 'privacy:metadata:run:error', |
| 52 | 'timecreated' => 'privacy:metadata:run:timecreated', |
| 53 | ], 'privacy:metadata:run'); |
| 54 | $collection->add_database_table('tool_autoflow_workflow', [ |
| 55 | 'usermodified' => 'privacy:metadata:workflow:usermodified', |
| 56 | 'runasuserid' => 'privacy:metadata:workflow:runasuserid', |
| 57 | 'timemodified' => 'privacy:metadata:workflow:timemodified', |
| 58 | ], 'privacy:metadata:workflow'); |
| 59 | $collection->add_external_location_link('httprequest', [ |
| 60 | 'data' => 'privacy:metadata:httprequest:data', |
| 61 | ], 'privacy:metadata:httprequest'); |
| 62 | return $collection; |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Contexts holding data for a user: the system context if any row mentions them. |
| 67 | * |
| 68 | * @param int $userid |
| 69 | * @return contextlist |
| 70 | */ |
| 71 | public static function get_contexts_for_userid(int $userid): contextlist { |
| 72 | $contextlist = new contextlist(); |
| 73 | if (self::user_has_data($userid)) { |
| 74 | $contextlist->add_system_context(); |
| 75 | } |
| 76 | return $contextlist; |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Users with data in a context. |
| 81 | * |
| 82 | * @param userlist $userlist |
| 83 | */ |
| 84 | public static function get_users_in_context(userlist $userlist) { |
| 85 | if ($userlist->get_context()->contextlevel != CONTEXT_SYSTEM) { |
| 86 | return; |
| 87 | } |
| 88 | $userlist->add_from_sql('userid', 'SELECT userid FROM {tool_autoflow_run} WHERE userid IS NOT NULL', []); |
| 89 | $userlist->add_from_sql('usermodified', 'SELECT usermodified FROM {tool_autoflow_workflow}', []); |
| 90 | $userlist->add_from_sql( |
| 91 | 'runasuserid', |
| 92 | 'SELECT runasuserid FROM {tool_autoflow_workflow} WHERE runasuserid IS NOT NULL', |
| 93 | [] |
| 94 | ); |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * Export a user's runs and the workflows they edit or run as. |
| 99 | * |
| 100 | * @param approved_contextlist $contextlist |
| 101 | */ |
| 102 | public static function export_user_data(approved_contextlist $contextlist) { |
| 103 | global $DB; |
| 104 | $userid = $contextlist->get_user()->id; |
| 105 | foreach ($contextlist->get_contexts() as $context) { |
| 106 | if ($context->contextlevel != CONTEXT_SYSTEM) { |
| 107 | continue; |
| 108 | } |
| 109 | $runs = $DB->get_records( |
| 110 | 'tool_autoflow_run', |
| 111 | ['userid' => $userid], |
| 112 | 'id ASC', |
| 113 | 'id, workflowid, status, triggertype, timecreated' |
| 114 | ); |
| 115 | $workflows = $DB->get_records_select( |
| 116 | 'tool_autoflow_workflow', |
| 117 | 'usermodified = :u1 OR runasuserid = :u2', |
| 118 | ['u1' => $userid, 'u2' => $userid], |
| 119 | 'id ASC', |
| 120 | 'id, name, timemodified' |
| 121 | ); |
| 122 | $data = (object) [ |
| 123 | 'runs' => array_values(array_map(fn($r) => [ |
| 124 | 'workflowid' => $r->workflowid, |
| 125 | 'status' => $r->status, |
| 126 | 'trigger' => $r->triggertype, |
| 127 | 'timecreated' => transform::datetime($r->timecreated), |
| 128 | ], $runs)), |
| 129 | 'workflows' => array_values(array_map(fn($w) => [ |
| 130 | 'name' => $w->name, |
| 131 | 'timemodified' => transform::datetime($w->timemodified), |
| 132 | ], $workflows)), |
| 133 | ]; |
| 134 | writer::with_context($context)->export_data([get_string('pluginname', 'tool_autoflow')], $data); |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * Delete everything about all users in a context. |
| 140 | * |
| 141 | * @param \context $context |
| 142 | */ |
| 143 | public static function delete_data_for_all_users_in_context(\context $context) { |
| 144 | global $DB; |
| 145 | if ($context->contextlevel != CONTEXT_SYSTEM) { |
| 146 | return; |
| 147 | } |
| 148 | $DB->delete_records('tool_autoflow_run'); |
| 149 | $DB->set_field('tool_autoflow_workflow', 'usermodified', 0); |
| 150 | $DB->set_field_select('tool_autoflow_workflow', 'runasuserid', null, 'runasuserid IS NOT NULL'); |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Delete one user's data. |
| 155 | * |
| 156 | * @param approved_contextlist $contextlist |
| 157 | */ |
| 158 | public static function delete_data_for_user(approved_contextlist $contextlist) { |
| 159 | foreach ($contextlist->get_contexts() as $context) { |
| 160 | if ($context->contextlevel == CONTEXT_SYSTEM) { |
| 161 | self::anonymise_users([$contextlist->get_user()->id]); |
| 162 | } |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * Delete data for several users in a context. |
| 168 | * |
| 169 | * @param approved_userlist $userlist |
| 170 | */ |
| 171 | public static function delete_data_for_users(approved_userlist $userlist) { |
| 172 | if ($userlist->get_context()->contextlevel == CONTEXT_SYSTEM) { |
| 173 | self::anonymise_users($userlist->get_userids()); |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | /** |
| 178 | * Whether any row mentions the user. |
| 179 | * |
| 180 | * @param int $userid |
| 181 | * @return bool |
| 182 | */ |
| 183 | private static function user_has_data(int $userid): bool { |
| 184 | global $DB; |
| 185 | return $DB->record_exists('tool_autoflow_run', ['userid' => $userid]) |
| 186 | || $DB->record_exists_select( |
| 187 | 'tool_autoflow_workflow', |
| 188 | 'usermodified = :u1 OR runasuserid = :u2', |
| 189 | ['u1' => $userid, 'u2' => $userid] |
| 190 | ); |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * Remove user data. Runs about the user are deleted, because their logs can hold the |
| 195 | * user's details. Workflows stay, as they belong to the site; only the user references go. |
| 196 | * |
| 197 | * @param int[] $userids |
| 198 | */ |
| 199 | private static function anonymise_users(array $userids) { |
| 200 | global $DB; |
| 201 | if (!$userids) { |
| 202 | return; |
| 203 | } |
| 204 | [$insql, $params] = $DB->get_in_or_equal($userids, SQL_PARAMS_NAMED); |
| 205 | $DB->delete_records_select('tool_autoflow_run', "userid $insql", $params); |
| 206 | $DB->set_field_select('tool_autoflow_workflow', 'usermodified', 0, "usermodified $insql", $params); |
| 207 | $DB->set_field_select('tool_autoflow_workflow', 'runasuserid', null, "runasuserid $insql", $params); |
| 208 | } |
| 209 | } |