<?php
declare(strict_types=1);
namespace Butschster\ContextGenerator\Source\Text;
use Butschster\ContextGenerator\Application\Logger\LoggerPrefix;
use Butschster\ContextGenerator\Lib\Content\Block\TextBlock;
use Butschster\ContextGenerator\Lib\Content\ContentBuilderFactory;
use Butschster\ContextGenerator\Lib\Variable\VariableResolver;
use Butschster\ContextGenerator\Modifier\ModifiersApplierInterface;
use Butschster\ContextGenerator\Source\Fetcher\SourceFetcherInterface;
use Butschster\ContextGenerator\Source\SourceInterface;
use Psr\Log\LoggerInterface;
/**
* Fetcher for text sources
* @implements SourceFetcherInterface<TextSource>
*/
final readonly class TextSourceFetcher implements SourceFetcherInterface
{
public function __construct(
private ContentBuilderFactory $builderFactory = new ContentBuilderFactory(),
private VariableResolver $variableResolver = new VariableResolver(),
#[LoggerPrefix(prefix: 'text-source')]
private ?LoggerInterface $logger = null,
) {}
public function supports(SourceInterface $source): bool
{
$isSupported = $source instanceof TextSource;
$this->logger?->debug('Checking if source is supported', [
'sourceType' => $source::class,
'isSupported' => $isSupported,
]);
return $isSupported;
}
public function fetch(SourceInterface $source, ModifiersApplierInterface $modifiersApplier): string
{
if (!$source instanceof TextSource) {
$errorMessage = 'Source must be an instance of TextSource';
$this->logger?->error($errorMessage, [
'sourceType' => $source::class,
]);
throw new \InvalidArgumentException($errorMessage);
}
$description = $this->variableResolver->resolve($source->getDescription());
$this->logger?->info('Fetching text source content', [
'description' => $description,
'tag' => $source->tag,
'contentLength' => \strlen($source->content),
]);
// Create builder
$this->logger?->debug('Creating content builder');
$builder = $this->builderFactory
->create()
->addDescription($description);
$this->logger?->debug('Adding text content with tags', [
'tag' => $source->tag,
]);
$content = $this->variableResolver->resolve($source->content);
$tag = $this->variableResolver->resolve($source->tag);
$builder
->addBlock(new TextBlock($modifiersApplier->apply($content, 'file.txt'), $tag))
->addSeparator();
$content = $builder->build();
$this->logger?->info('Text source content fetched successfully', [
'contentLength' => \strlen($content),
]);
// Return built content
return $content;
}
}
