meirzamoodle
686 lines
25 KiB
PHP
686 lines
25 KiB
PHP
<?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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namespace core_ai;
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use core\exception\coding_exception;
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use core_ai\aiactions\base;
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use core_ai\aiactions\responses;
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use core\plugininfo\aiprovider as aiproviderplugin;
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/**
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* AI subsystem manager.
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*
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* @package core_ai
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* @copyright 2024 Matt Porritt <matt.porritt@moodle.com>
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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 manager {
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/**
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* Create a new AI manager.
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*
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* @param \moodle_database $db
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*/
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public function __construct(
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/** @var \moodle_database The database instance */
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protected readonly \moodle_database $db,
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) {
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}
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/**
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* Get communication provider class name from the plugin name.
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*
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* @param string $plugin The component name.
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* @return string The class name of the provider.
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*/
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private static function get_ai_plugin_classname(string $plugin): string {
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if (str_starts_with($plugin, 'aiprovider_')) {
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return "{$plugin}\\provider";
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} else if (str_starts_with($plugin, 'aiplacement_')) {
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return "{$plugin}\\placement";
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} else {
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// Explode if neither.
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throw new coding_exception("Plugin name does not start with 'aiprovider_' or 'aiplacement_': {$plugin}");
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}
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}
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/**
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* Get the list of actions that this provider or placement supports,
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* given the name of the plugin.
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*
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* @param string $pluginname The name of the plugin to get the actions for.
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* @return array An array of action class names.
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*/
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public static function get_supported_actions(string $pluginname): array {
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$pluginclassname = static::get_ai_plugin_classname($pluginname);
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return $pluginclassname::get_action_list();
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}
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/**
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* Given a list of actions get the provider instances that support them.
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*
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* Will return an array of arrays, indexed by action name.
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*
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* @param array $actions An array of fully qualified action class names.
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* @param bool $enabledonly If true, only return enabled providers.
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* @return array An array of provider instances indexed by action name.
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*/
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public function get_providers_for_actions(array $actions, bool $enabledonly = false): array {
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$providers = [];
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$instances = $this->get_sorted_providers();
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foreach ($actions as $action) {
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$providers[$action] = [];
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foreach ($instances as $instance) {
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// Check the plugin is enabled and the provider is configured before making the action available.
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if ($enabledonly && (!$instance->enabled
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|| !$this->is_action_enabled($instance->provider, $action, $instance->id))
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|| $enabledonly && !$instance->is_provider_configured()) {
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continue;
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}
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if (in_array($action, $instance->get_action_list())) {
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$providers[$action][] = $instance;
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}
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}
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}
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return $providers;
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}
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/**
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* Call the action provider.
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*
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* The named provider will process the action and return the result.
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*
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* @param provider $provider The provider to call.
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* @param base $action The action to process.
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* @return responses\response_base The result of the action.
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*/
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protected function call_action_provider(provider $provider, base $action): responses\response_base {
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$classname = 'process_' . $action->get_basename();
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$classpath = substr($provider::class, 0, strpos($provider::class, '\\') + 1);
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$processclass = $classpath . $classname;
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$processor = new $processclass($provider, $action);
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return $processor->process($action);
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}
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/**
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* Process an action.
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*
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* This is the entry point for processing an action.
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*
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* @param base $action The action to process. Action must be configured.
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* @return responses\response_base The result of the action.
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*/
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public function process_action(base $action): responses\response_base {
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// Get the action response_base name.
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$actionname = $action::class;
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$responseclassname = 'core_ai\\aiactions\\responses\\response_' . $action->get_basename();
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// Get the providers that support the action.
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$providers = $this->get_providers_for_actions([$actionname], true);
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// Loop through the providers and process the action.
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foreach ($providers[$actionname] as $provider) {
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$result = $this->call_action_provider($provider, $action);
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// Store the result (success or failure).
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$this->store_action_result($provider, $action, $result);
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// If the result is successful, return the result.
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// No need to keep looping.
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if ($result->get_success()) {
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return $result;
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}
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}
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// If we get here we've all available providers have failed.
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// Return the result if we have one.
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if (isset($result)) {
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return $result;
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}
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// Response if there are no providers available.
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return new $responseclassname(
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success: false,
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errorcode: -1,
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errormessage: 'No providers available to process the action.');
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}
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/**
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* Store the action result.
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*
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* @param provider $provider The provider that processed the action.
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* @param base $action The action that was processed.
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* @param responses\response_base $response The result of the action.
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* @return int The id of the stored action result.
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*/
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private function store_action_result(
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provider $provider,
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base $action,
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responses\response_base $response,
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): int {
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global $DB;
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// Store the action result.
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$record = (object) [
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'actionname' => $action->get_basename(),
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'success' => $response->get_success(),
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'userid' => $action->get_configuration('userid'),
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'contextid' => $action->get_configuration('contextid'),
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'provider' => $provider->get_name(),
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'errorcode' => $response->get_errorcode(),
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'errormessage' => $response->get_errormessage(),
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'timecreated' => $action->get_configuration('timecreated'),
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'timecompleted' => $response->get_timecreated(),
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'model' => $response->get_model_used(),
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];
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try {
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// Do everything in a transaction.
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$transaction = $DB->start_delegated_transaction();
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// Create the record for the action result.
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$record->actionid = $action->store($response);
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$recordid = $DB->insert_record('ai_action_register', $record);
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// Commit the transaction.
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$transaction->allow_commit();
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} catch (\Exception $e) {
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// Rollback the transaction.
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$transaction->rollback($e);
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// Re throw the exception.
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throw $e;
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}
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return $recordid;
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}
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/**
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* Set the policy acceptance for a given user.
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*
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* @param int $userid The user id.
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* @param int $contextid The context id the policy was accepted in.
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* @return bool True if the policy was set, false otherwise.
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*/
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public static function user_policy_accepted(int $userid, int $contextid): bool {
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global $DB;
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$record = (object) [
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'userid' => $userid,
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'contextid' => $contextid,
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'timeaccepted' => \core\di::get(\core\clock::class)->time(),
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];
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if ($DB->insert_record('ai_policy_register', $record)) {
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$policycache = \cache::make('core', 'ai_policy');
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return $policycache->set($userid, true);
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} else {
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return false;
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}
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}
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/**
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* Get the user policy.
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*
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* @param int $userid The user id.
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* @return bool True if the policy was accepted, false otherwise.
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*/
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public static function get_user_policy_status(int $userid): bool {
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$policycache = \cache::make('core', 'ai_policy');
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return $policycache->get($userid);
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}
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/**
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* Set the action state for a given plugin.
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*
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* @param string $plugin The name of the plugin.
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* @param string $actionbasename The action to be set.
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* @param int $enabled The state to be set (e.g., enabled or disabled).
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* @param int $instanceid The instance id of the instance.
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* @return bool Returns true if the configuration was successfully set, false otherwise.
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*/
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public function set_action_state(
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string $plugin,
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string $actionbasename,
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int $enabled,
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int $instanceid = 0
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): bool {
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$actionclass = 'core_ai\\aiactions\\' . $actionbasename;
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$oldvalue = $this->is_action_enabled($plugin, $actionclass, $instanceid);
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// Check if we are setting an action for a provider or placement.
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if (str_contains($plugin, 'aiprovider')) {
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// Handle provider actions.
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$providers = $this->get_provider_instances(['id' => $instanceid]);
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$provider = reset($providers);
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// Update the enabled state of the action.
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$actionconfig = $provider->actionconfig;
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$actionconfig[$actionclass]['enabled'] = (bool)$enabled;
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return $this->update_provider_instance(
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provider: $provider,
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actionconfig: $actionconfig)->actionconfig[$actionclass]['enabled'];
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} else {
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// Handle placement actions.
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// Only set value if there is no config setting or if the value is different from the previous one.
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if ($oldvalue !== (bool)$enabled) {
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set_config($actionbasename, $enabled, $plugin);
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add_to_config_log('disabled', !$oldvalue, !$enabled, $plugin);
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\core_plugin_manager::reset_caches();
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return true;
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}
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return false;
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}
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}
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/**
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* Check if an action is enabled for a given provider.
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*
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* @param string $plugin The name of the plugin.
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* @param string $actionclass The fully qualified action class name to be checked.
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* @param int $instanceid The instance id of the plugin.
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* @return bool Returns the configuration value of the action for the given plugin.
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*/
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private function is_provider_action_enabled(string $plugin, string $actionclass, int $instanceid): bool {
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// If there is no instance id, we are checking the provider itself.
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// So get the defaults.
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if ($instanceid === 0) {
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// Get the defaults for this provider type.
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$classname = "\\{$plugin}\\provider";
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$defaultconfig = $classname::initialise_action_settings();
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// Return the default value.
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return array_key_exists($actionclass, $defaultconfig) && $defaultconfig[$actionclass]['enabled'];
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} else {
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// Get the provider instance.
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$providers = $this->get_provider_instances(['id' => $instanceid]);
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$provider = reset($providers);
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return array_key_exists($actionclass, $provider->actionconfig) && $provider->actionconfig[$actionclass]['enabled'];
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}
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}
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/**
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* Check if an action is enabled for a given plugin.
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*
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* @param string $plugin The name of the plugin.
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* @param string $actionclass The fully qualified action class name to be checked.
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* @param int $instanceid The instance id of the plugin.
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* @return bool Returns the configuration value of the action for the given plugin.
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*/
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public function is_action_enabled(string $plugin, string $actionclass, int $instanceid = 0): bool {
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if (str_contains($plugin, 'aiprovider')) {
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// Handle provider actions.
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return $this->is_provider_action_enabled($plugin, $actionclass, $instanceid);
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} else {
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// Handle placement actions.
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$value = get_config($plugin, $actionclass::get_basename());
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// If not exist in DB, set it to true (enabled).
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if ($value === false) {
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return true;
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}
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return (bool) $value;
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}
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}
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/**
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* Check if an action is available.
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* Action is available if it is enabled for at least one enabled provider.
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*
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* @param string $actionclass The fully qualified action class name to be checked.
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* @return bool
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*/
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public function is_action_available(string $actionclass): bool {
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$providers = $this->get_providers_for_actions([$actionclass], true);
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// Check if the requested action is enabled for at least one provider.
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foreach ($providers as $provideractions) {
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foreach ($provideractions as $provider) {
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$classnamearray = explode('\\', $provider::class);
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$pluginname = reset($classnamearray);
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if ($this->is_action_enabled($pluginname, $actionclass)) {
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return true;
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}
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}
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}
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// There are no providers with this action enabled.
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return false;
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}
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/**
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* Create a new provider instance.
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*
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* @param string $classname Classname of the provider.
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* @param string $name The name of the provider config.
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* @param bool $enabled The enabled state of the provider.
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* @param array|null $config The config json.
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* @param array|null $actionconfig The action config json.
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* @return provider
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*/
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public function create_provider_instance(
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string $classname,
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string $name,
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bool $enabled = false,
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?array $config = null,
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?array $actionconfig = null,
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): provider {
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if (!class_exists($classname) || !is_a($classname, provider::class, true)) {
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throw new \coding_exception("Provider class not valid: {$classname}");
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}
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$provider = new $classname(
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enabled: $enabled,
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name: $name,
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config: json_encode($config ?? []),
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actionconfig: $actionconfig ? json_encode($actionconfig) : '',
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);
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$id = $this->db->insert_record('ai_providers', $provider->to_record());
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// Ensure the provider instance order config gets updated if the provider is enabled.
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if ($enabled) {
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$this->update_provider_order($id, \core\plugininfo\aiprovider::ENABLE);
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}
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return $provider->with(id: $id);
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}
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/**
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* Get single provider record according to the filter
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*
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* @param array $filter The filterable elements to get the record from
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* @param int $strictness
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* @return \stdClass|false
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*/
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public function get_provider_record(array $filter = [], int $strictness = IGNORE_MISSING): \stdClass|false {
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return $this->db->get_record(
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table: 'ai_providers',
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conditions: $filter,
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strictness: $strictness,
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);
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}
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/**
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* Get the provider records according to the filter.
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*
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* @param array|null $filter The filterable elements to get the records from.
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* @return array
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*/
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public function get_provider_records(?array $filter = null): array {
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return $this->db->get_records(
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table: 'ai_providers',
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conditions: $filter,
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);
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}
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/**
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* Get a list of all provider instances.
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*
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* This method retrieves provider records from the database, attempts to instantiate
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* each provider class, and returns an array of provider instances. It filters out
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* any records where the provider class does not exist.
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*
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* @param null|array $filter The database filter to apply when fetching provider records.
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* @return array An array of instantiated provider objects.
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*/
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public function get_provider_instances(?array $filter = null): array {
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// Filter out any null values from the array (providers that couldn't be instantiated).
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return array_filter(
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// Apply a callback function to each provider record to instantiate the provider.
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array_map(
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function ($record): ?provider {
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// Check if the provider class specified in the record exists.
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if (!class_exists($record->provider)) {
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// Log a debugging message if the provider class is not found.
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debugging(
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"Unable to find a provider class for {$record->provider}",
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DEBUG_DEVELOPER,
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);
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// Return null to indicate that the provider could not be instantiated.
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return null;
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}
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// Instantiate the provider class with the record's data.
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return new $record->provider(
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enabled: $record->enabled,
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id: $record->id,
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name: $record->name,
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config: $record->config,
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actionconfig: $record->actionconfig,
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);
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},
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// Retrieve the provider records from the database with the optional filter.
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$this->get_provider_records($filter),
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)
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);
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}
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/**
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* Update provider instance.
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*
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* @param provider $provider The provider instance.
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* @param array|null $config the configuration of the provider instance to be updated.
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* @param array|null $actionconfig the action configuration of the provider instance to be updated.
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* @return provider
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*/
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public function update_provider_instance(
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provider $provider,
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?array $config = null,
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?array $actionconfig = null
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): provider {
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$provider = $provider->with(
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name: $provider->name,
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config: $config ?? $provider->config,
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actionconfig: $actionconfig ?? $provider->actionconfig,
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);
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$this->db->update_record('ai_providers', $provider->to_record());
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return $provider;
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}
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/**
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* Delete the provider instance.
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*
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* @param provider $provider The provider instance.
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* @return bool
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*/
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public function delete_provider_instance(provider $provider): bool {
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// Dispatch the hook before deleting the record.
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$hook = new \core_ai\hook\before_provider_deleted(
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provider: $provider,
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);
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$hookmanager = \core\di::get(\core\hook\manager::class)->dispatch($hook);
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if ($hookmanager->isPropagationStopped()) {
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$deleted = false;
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} else {
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$deleted = $this->db->delete_records('ai_providers', ['id' => $provider->id]);
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}
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return $deleted;
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}
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/**
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* Enable a provider instance.
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*
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* @param provider $provider
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* @return provider
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*/
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public function enable_provider_instance(provider $provider): provider {
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if (!$provider->enabled) {
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$provider = $provider->with(enabled: true);
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$this->db->update_record('ai_providers', $provider->to_record());
|
|
$this->update_provider_order($provider->id, aiproviderplugin::ENABLE);
|
|
}
|
|
|
|
return $provider;
|
|
}
|
|
|
|
/**
|
|
* Disable a provider.
|
|
*
|
|
* @param provider $provider
|
|
* @return provider
|
|
*/
|
|
public function disable_provider_instance(provider $provider): provider {
|
|
if ($provider->enabled) {
|
|
$hook = new \core_ai\hook\before_provider_disabled(
|
|
provider: $provider,
|
|
);
|
|
$hookmanager = \core\di::get(\core\hook\manager::class)->dispatch($hook);
|
|
if (!$hookmanager->isPropagationStopped()) {
|
|
$provider = $provider->with(enabled: false);
|
|
$this->db->update_record('ai_providers', $provider->to_record());
|
|
}
|
|
$this->update_provider_order($provider->id, aiproviderplugin::DISABLE);
|
|
}
|
|
|
|
return $provider;
|
|
}
|
|
|
|
/**
|
|
* Sorts provider instances by configured order.
|
|
*
|
|
* @param array $unsorted of provider instance objects
|
|
* @return array of provider instance objects
|
|
*/
|
|
public static function sort_providers_by_order(array $unsorted): array {
|
|
$sorted = [];
|
|
$orderarray = explode(',', get_config('core_ai', 'provider_order'));
|
|
|
|
foreach ($orderarray as $notused => $providerid) {
|
|
foreach ($unsorted as $key => $provider) {
|
|
if ($provider->id == $providerid) {
|
|
$sorted[] = $provider;
|
|
unset($unsorted[$key]);
|
|
}
|
|
}
|
|
}
|
|
|
|
return array_merge($sorted, $unsorted);
|
|
}
|
|
|
|
/**
|
|
* Get the configured ai providers from the manager.
|
|
*
|
|
* @return array
|
|
*/
|
|
public function get_sorted_providers(): array {
|
|
$unsorted = $this->get_provider_instances();
|
|
$orders = $this->sort_providers_by_order($unsorted);
|
|
$sortedplugins = [];
|
|
|
|
foreach ($orders as $order) {
|
|
$sortedplugins[$order->id] = $unsorted[$order->id];
|
|
}
|
|
|
|
return $sortedplugins;
|
|
}
|
|
|
|
/**
|
|
* Change the order of the provider instance relative to other provider instances.
|
|
*
|
|
* When possible, the change will be stored into the config_log table, to let admins check when/who has modified it.
|
|
*
|
|
* @param int $providerid The provider ID.
|
|
* @param int $direction The direction to move the provider instance. Negative numbers mean up, Positive mean down.
|
|
* @return bool Whether the provider has been updated or not.
|
|
*/
|
|
public function change_provider_order(int $providerid, int $direction): bool {
|
|
$activefactors = array_keys($this->get_sorted_providers());
|
|
$key = array_search($providerid, $activefactors);
|
|
|
|
if ($key === false) {
|
|
return false;
|
|
}
|
|
|
|
$movedown = ($direction === aiproviderplugin::MOVE_DOWN && $key < count($activefactors) - 1);
|
|
$moveup = ($direction === aiproviderplugin::MOVE_UP && $key >= 1);
|
|
if ($movedown || $moveup) {
|
|
$this->update_provider_order($providerid, $direction);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Update the provider instance order configuration.
|
|
*
|
|
* @param int $providerid The provider ID.
|
|
* @param string|int $action
|
|
*
|
|
* @throws dml_exception
|
|
*/
|
|
public function update_provider_order(int $providerid, string|int $action): void {
|
|
$order = explode(',', get_config('core_ai', 'provider_order'));
|
|
$key = array_search($providerid, $order);
|
|
|
|
switch ($action) {
|
|
case aiproviderplugin::MOVE_UP:
|
|
if ($key >= 1) {
|
|
$fsave = $order[$key];
|
|
$order[$key] = $order[$key - 1];
|
|
$order[$key - 1] = $fsave;
|
|
}
|
|
break;
|
|
|
|
case aiproviderplugin::MOVE_DOWN:
|
|
if ($key < (count($order) - 1)) {
|
|
$fsave = $order[$key];
|
|
$order[$key] = $order[$key + 1];
|
|
$order[$key + 1] = $fsave;
|
|
}
|
|
break;
|
|
|
|
case aiproviderplugin::ENABLE:
|
|
if (!$key) {
|
|
$order[] = $providerid;
|
|
}
|
|
break;
|
|
|
|
case aiproviderplugin::DISABLE:
|
|
if ($key) {
|
|
unset($order[$key]);
|
|
}
|
|
break;
|
|
}
|
|
|
|
$this->set_provider_config(['provider_order' => implode(',', $order)], 'core_ai');
|
|
|
|
\core\session\manager::gc(); // Remove stale sessions.
|
|
\core_plugin_manager::reset_caches();
|
|
}
|
|
|
|
/**
|
|
* Sets config variable for given provider instance.
|
|
*
|
|
* @param array $data The data to set.
|
|
* @param string $plugin The plugin name.
|
|
*
|
|
* @return bool true or exception.
|
|
* @throws dml_exception
|
|
*/
|
|
public function set_provider_config(array $data, string $plugin): bool|dml_exception {
|
|
$providerconf = get_config($plugin);
|
|
foreach ($data as $key => $newvalue) {
|
|
if (empty($providerconf->$key)) {
|
|
add_to_config_log($key, null, $newvalue, $plugin);
|
|
set_config($key, $newvalue, $plugin);
|
|
} else if ($providerconf->$key != $newvalue) {
|
|
add_to_config_log($key, $providerconf->$key, $newvalue, $plugin);
|
|
set_config($key, $newvalue, $plugin);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
}
|