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<?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 aiplacement_editor\external;
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use aiplacement_editor\utils;
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use core_external\external_api;
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use core_external\external_function_parameters;
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use core_external\external_value;
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/**
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* External API to call an action for this placement.
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*
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* @package aiplacement_editor
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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 generate_text extends external_api {
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/**
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* Generate image parameters.
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*
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* @return external_function_parameters
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* @since Moodle 4.5
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*/
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public static function execute_parameters(): external_function_parameters {
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return new external_function_parameters([
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'contextid' => new external_value(
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PARAM_INT,
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'The context ID',
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VALUE_REQUIRED,
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),
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'prompttext' => new external_value(
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PARAM_RAW,
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'The prompt text for the AI service',
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VALUE_REQUIRED,
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),
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]);
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}
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/**
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* Generate text from the AI placement.
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*
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* @param int $contextid The context ID.
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* @param string $prompttext The data encoded as a json array.
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* @return array The generated content.
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* @since Moodle 4.5
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*/
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public static function execute(
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int $contextid,
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string $prompttext
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): array {
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global $USER;
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// Parameter validation.
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[
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'contextid' => $contextid,
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'prompttext' => $prompttext,
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] = self::validate_parameters(self::execute_parameters(), [
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'contextid' => $contextid,
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'prompttext' => $prompttext,
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]);
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// Context validation and permission check.
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// Get the context from the passed in ID.
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$context = \core\context::instance_by_id($contextid);
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// Check the user has permission to use the AI service.
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self::validate_context($context);
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if (!utils::is_html_editor_placement_action_available($context, 'generate_text', \core_ai\aiactions\generate_text::class)) {
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throw new \moodle_exception('noeditor', 'aiplacement_editor');
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}
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// Prepare the action.
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$action = new \core_ai\aiactions\generate_text(
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contextid: $contextid,
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userid: $USER->id,
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prompttext: $prompttext,
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);
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// Send the action to the AI manager.
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$manager = \core\di::get(\core_ai\manager::class);
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$response = $manager->process_action($action);
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// Return the response.
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return [
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'success' => $response->get_success(),
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'generatedcontent' => $response->get_response_data()['generatedcontent'] ?? '',
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'finishreason' => $response->get_response_data()['finishreason'] ?? '',
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'errorcode' => $response->get_errorcode(),
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'error' => $response->get_errormessage(),
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'timecreated' => $response->get_timecreated(),
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'prompttext' => $prompttext,
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];
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}
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/**
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* Generate content return value.
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*
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* @return external_function_parameters
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* @since Moodle 4.5
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*/
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public static function execute_returns(): external_function_parameters {
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return new external_function_parameters([
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'success' => new external_value(
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PARAM_BOOL,
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'Was the request successful',
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VALUE_REQUIRED,
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),
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'timecreated' => new external_value(
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PARAM_INT,
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'The time the request was created',
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VALUE_REQUIRED,
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),
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'prompttext' => new external_value(
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PARAM_RAW,
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'The prompt text for the AI service',
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VALUE_REQUIRED,
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),
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'generatedcontent' => new external_value(
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PARAM_TEXT,
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'The text generated by AI.',
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VALUE_DEFAULT,
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),
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'finishreason' => new external_value(
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PARAM_ALPHAEXT,
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'The reason generation was stopped',
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VALUE_DEFAULT,
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'stop',
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),
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'errorcode' => new external_value(
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PARAM_INT,
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'Error code if any',
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VALUE_DEFAULT,
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0,
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),
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'error' => new external_value(
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PARAM_TEXT,
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'Error message if any',
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VALUE_DEFAULT,
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'',
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),
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]);
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}
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}
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