chat.php

<?php

declare(strict_types=1);

use PhpLlm\LlmChain\Chain\Chain;
use PhpLlm\LlmChain\Platform\Bridge\Albert\PlatformFactory;
use PhpLlm\LlmChain\Platform\Bridge\OpenAI\GPT;
use PhpLlm\LlmChain\Platform\Message\Message;
use PhpLlm\LlmChain\Platform\Message\MessageBag;

require_once dirname(__DIR__).'/../vendor/autoload.php';

if (!isset($_SERVER['ALBERT_API_KEY'], $_SERVER['ALBERT_API_URL'])) {
    echo 'Please set the ALBERT_API_KEY and ALBERT_API_URL environment variable (e.g., https://your-albert-instance.com/v1).'.\PHP_EOL;
    exit(1);
}

$platform = PlatformFactory::create($_SERVER['ALBERT_API_KEY'], $_SERVER['ALBERT_API_URL']);

$model = new GPT('gpt-4o');
$chain = new Chain($platform, $model);

$documentContext = <<<'CONTEXT'
    Document: AI Strategy of France

    France has launched a comprehensive national AI strategy with the following key objectives:
    1. Strengthening the AI ecosystem and attracting talent
    2. Developing sovereign AI capabilities
    3. Ensuring ethical and responsible AI development
    4. Supporting AI adoption in public services
    5. Investing €1.5 billion in AI research and development

    The Albert project is part of this strategy, providing a sovereign AI solution for French public administration.
    CONTEXT;

$messages = new MessageBag(
    Message::forSystem(
        'You are an AI assistant with access to documents about French AI initiatives. '.
        'Use the provided context to answer questions accurately.'
    ),
    Message::ofUser($documentContext),
    Message::ofUser('What are the main objectives of France\'s AI strategy?'),
);

$response = $chain->call($messages);

echo $response->getContent().\PHP_EOL;