Prompt templates

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

use Cognesy\Messages\Messages;
use Cognesy\Polyglot\Inference\Inference;
use Cognesy\Template\Template;
use Cognesy\Utils\Str;

// EXAMPLE 1: Define prompt template inline (don't use files) and use short syntax

$prompt = Template::twig()
    ->from('What is capital of {{country}}')
    ->with(['country' => 'Germany'])
    ->toText();

$answer = Inference::using('openai')->withMessages(Messages::fromString($prompt))->get();

echo "EXAMPLE 1: prompt = $prompt\n";
echo "ASSISTANT: $answer\n";
echo "\n";
assert(Str::contains($answer, 'Berlin'));

// EXAMPLE 2: Load prompt from file

// DSN now uses engine aliases (twig/blade/arrowpipe), so point twig at a concrete template path
$prompt = Template::text(
    pathOrDsn: 'twig:packages/templates/resources/prompts/demo-twig/capital',
    variables: ['country' => 'Germany'],
);

$answer = Inference::using('openai')->withMessages(Messages::fromString($prompt))->get();

echo "EXAMPLE 2: prompt = $prompt\n";
echo "ASSISTANT: $answer\n";
echo "\n";
assert(Str::contains($answer, 'Berlin'));

?>