Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * API endpoint for retrieving GPT completion

 *

 * @package    block_openai_chat

 * @copyright  2023 Bryce Yoder <me@bryceyoder.com>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

use \block_openai_chat\completion;

require_once('../../../config.php');

require_once($CFG->libdir . '/filelib.php');

require_once($CFG->dirroot . '/blocks/openai_chat/lib.php');

global $DB, $PAGE;

if (get_config('block_openai_chat', 'restrictusage') !== "0") {

    require_login();

}

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {

    header("Location: $CFG->wwwroot");

    die();

}

$body = json_decode(file_get_contents('php://input'), true);

$message = clean_param($body['message'], PARAM_NOTAGS);

$history = clean_param_array($body['history'], PARAM_NOTAGS, true);

$block_id = clean_param($body['blockId'], PARAM_INT, true);

$thread_id = clean_param($body['threadId'], PARAM_NOTAGS, true);

// So that we're not leaking info to the client like API key, the block makes an API request including its ID

// Then we can look up that specific block to pull out its config data

$instance_record = $DB->get_record('block_instances', ['blockname' => 'openai_chat', 'id' => $block_id], '*');

$instance = block_instance('openai_chat', $instance_record);

if (!$instance) {

    print_error('invalidblockinstance', 'error', $id);

}

$context = context::instance_by_id($instance_record->parentcontextid);

try {

    $context = $context->get_course_context();

} catch (Exception $e) {}

$PAGE->set_context($context);

$block_settings = [];

$setting_names = [

    'sourceoftruth',

    'prompt',

    'instructions',

    'username',

    'assistantname',

    'apikey',

    'model',

    'temperature',

    'maxlength',

    'topp',

    'frequency',

    'presence',

    'assistant'

];

foreach ($setting_names as $setting) {

    if ($instance->config && property_exists($instance->config, $setting)) {

        $block_settings[$setting] = $instance->config->$setting ? $instance->config->$setting : "";

    } else {

        $block_settings[$setting] = "";

    }

}

$engine_class;

$model = get_config('block_openai_chat', 'model');

$api_type = get_config('block_openai_chat', 'type');

$engine_class = "\block_openai_chat\completion\\$api_type";

$completion = new $engine_class(...[$model, $message, $history, $block_settings, $thread_id]);

$response = $completion->create_completion($PAGE->context);

// Format the markdown of each completion message into HTML.

$response["message"] = format_text($response["message"], FORMAT_MARKDOWN, ['context' => $context]);

// Log the message

log_message($message, $response['message'], $context);

$response = json_encode($response);

echo $response;