Llm custom config

<?php
require 'examples/boot.php';

use Cognesy\Config\Env;
use Cognesy\Events\Dispatchers\EventDispatcher;
use Cognesy\Events\Event;
use Cognesy\Http\Config\HttpClientConfig;
use Cognesy\Http\Creation\HttpClientBuilder;
use Cognesy\Http\Drivers\Symfony\SymfonyDriver;
use Cognesy\Messages\Messages;
use Cognesy\Polyglot\Inference\Config\LLMConfig;
use Cognesy\Polyglot\Inference\Inference;
use Cognesy\Polyglot\Inference\InferenceRuntime;
use Cognesy\Utils\Str;
use Symfony\Component\HttpClient\HttpClient as SymfonyHttpClient;

$events = new EventDispatcher;

// Build fully customized HTTP client

$httpConfig = new HttpClientConfig(
    connectTimeout: 30,
    requestTimeout: 60,
    idleTimeout: -1,
    failOnError: true,
);

$yourClientInstance = SymfonyHttpClient::create(['http_version' => '2.0']);

$customClient = (new HttpClientBuilder)
    ->withEventBus($events)
    ->withDriver(new SymfonyDriver(
        config: $httpConfig,
        clientInstance: $yourClientInstance,
        events: $events,
    ))
    ->create();

// Create instance of LLM client initialized with custom parameters

$config = new LLMConfig(
    apiUrl  : 'https://api.deepseek.com',
    apiKey  : (string) Env::get('DEEPSEEK_API_KEY', ''),
    endpoint: '/chat/completions',
    model: 'deepseek-chat',
    maxTokens: 128,
    driver: 'deepseek',
);

// Call inference API with custom client and configuration
$events->addListener(Event::class, fn (Event $e) => $e->print());
$runtime = InferenceRuntime::fromConfig(
    config: $config,
    events: $events,
    httpClient: $customClient,
);

$answer = Inference::fromRuntime($runtime)
    ->with(
        messages: Messages::fromString('What is the capital of France'),
        options: ['max_tokens' => 64]
    )
    ->withStreaming()
    ->get();

echo "USER: What is capital of France\n";
echo "ASSISTANT: $answer\n";

assert(Str::contains($answer, 'Paris'));
?>