<?php
declare(strict_types=1);
namespace Butschster\ContextGenerator\McpServer\Prompt;
use Butschster\ContextGenerator\Application\Logger\LoggerPrefix;
use Butschster\ContextGenerator\Config\Import\Merger\AbstractConfigMerger;
use Butschster\ContextGenerator\Config\Import\Source\ImportedConfig;
use Butschster\ContextGenerator\McpServer\Prompt\Filter\PromptFilterFactory;
use Psr\Log\LoggerInterface;
#[LoggerPrefix(prefix: 'prompt-merger')]
final readonly class PromptConfigMerger extends AbstractConfigMerger
{
public function __construct(
LoggerInterface $logger,
private PromptFilterFactory $filterFactory = new PromptFilterFactory(),
) {
parent::__construct($logger);
}
public function getConfigKey(): string
{
return 'prompts';
}
protected function performMerge(array $mainSection, array $importedSection, ImportedConfig $importedConfig): array
{
// Create filter if source config has filter configuration
$filter = null;
$sourceConfig = $importedConfig->sourceConfig;
$filterConfig = $sourceConfig->getFilter();
if ($filterConfig !== null && !$filterConfig->isEmpty()) {
$filter = $this->filterFactory->createFromConfig($filterConfig->getConfig());
if ($filter !== null) {
$this->logger->debug('Created prompt filter for import', [
'path' => $importedConfig->path,
'filterConfig' => $filterConfig->getConfig(),
]);
}
}
// Index main prompts by ID for efficient lookups
$indexedPrompts = [];
foreach ($mainSection as $prompt) {
if (!isset($prompt['id'])) {
continue;
}
$indexedPrompts[$prompt['id']] = $prompt;
}
// Process each imported prompt
$importedCount = 0;
$filteredCount = 0;
foreach ($importedSection as $prompt) {
if (!isset($prompt['id'])) {
$this->logger->warning('Skipping prompt without ID', [
'prompt' => $prompt,
'path' => $importedConfig->path,
]);
continue;
}
// Apply filter if it exists
if ($filter !== null && !$filter->shouldInclude($prompt)) {
$this->logger->debug('Filtered out prompt', [
'id' => $prompt['id'],
'path' => $importedConfig->path,
]);
$filteredCount++;
continue;
}
$promptId = $prompt['id'];
$indexedPrompts[$promptId] = $prompt;
$importedCount++;
$this->logger->debug('Merged prompt', [
'id' => $promptId,
'path' => $importedConfig->path,
]);
}
if ($filter !== null) {
$this->logger->info('Import filtering results', [
'path' => $importedConfig->path,
'imported' => $importedCount,
'filtered' => $filteredCount,
'total' => \count($importedSection),
]);
}
// Convert back to numerically indexed array
return \array_values($indexedPrompts);
}
}
