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<?php |
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declare( strict_types = 1 ); |
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namespace WMDE\BannerServer\UseCase\BannerSelection; |
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use Psr\Log\LoggerInterface; |
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use Symfony\Component\Yaml\Exception\ParseException; |
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use Symfony\Component\Yaml\Yaml; |
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use WMDE\BannerServer\Entity\BannerSelection\Banner; |
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use WMDE\BannerServer\Entity\BannerSelection\Bucket; |
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use WMDE\BannerServer\Entity\BannerSelection\Campaign; |
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use WMDE\BannerServer\Entity\BannerSelection\CampaignCollection; |
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use WMDE\BannerServer\Utils\SystemRandomIntegerGenerator; |
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/** |
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* @license GNU GPL v2+ |
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*/ |
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class CampaignConfigurationLoader { |
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private const DEFAULT_CONFIGURATION_FILE_PATH = 'config/campaigns/campaigns.yml'; |
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private $configFile; |
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private $logger; |
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public function __construct( LoggerInterface $logger, string $configFile = self::DEFAULT_CONFIGURATION_FILE_PATH ) { |
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$this->configFile = $this->getAbsolutePath( $configFile ); |
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$this->logger = $logger; |
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} |
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public function getCampaignCollection(): CampaignCollection { |
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$campaigns = []; |
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foreach ( $this->parseConfiguration() as $campaignName => $campaignData ) { |
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$campaign = $this->buildCampaignFromData( $campaignName, $campaignData ); |
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if ( $campaign ) { |
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$campaigns[] = $campaign; |
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} |
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} |
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return new CampaignCollection( ...$campaigns ); |
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} |
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private function buildCampaignFromData( string $campaignName, array $campaignData ): ?Campaign { |
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$buckets = $this->buildBucketsFromData( $campaignData ); |
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if ( empty( $buckets ) ) { |
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return null; |
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} |
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return new Campaign( |
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$campaignName, |
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new \DateTime( $campaignData['start'] ), |
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new \DateTime( $campaignData['end'] ), |
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(int)$campaignData['trafficLimit'], |
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new SystemRandomIntegerGenerator(), |
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array_shift( $buckets ), |
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...$buckets |
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); |
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} |
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private function buildBucketsFromData( array $campaignData ): array { |
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$buckets = []; |
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foreach ( $campaignData['buckets'] as $bucketData ) { |
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$bucket = $this->buildBucketFromData( $bucketData ); |
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if ( $bucket ) { |
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$buckets[] = $bucket; |
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} |
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} |
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return $buckets; |
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} |
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private function buildBucketFromData( array $bucketData ): ?Bucket { |
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if ( !isset( $bucketData['name'] ) ) { |
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return null; |
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} |
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$banners = $this->buildBannersFromData( $bucketData['banners'] ); |
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if ( empty( $banners ) ) { |
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return null; |
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} |
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return new Bucket( $bucketData['name'], array_shift( $banners ), ...$banners ); |
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} |
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private function buildBannersFromData( array $bannerData ): array { |
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$banners = []; |
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foreach ( $bannerData as $bannerIdentifier ) { |
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$banners[] = new Banner( $bannerIdentifier ); |
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} |
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return $banners; |
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} |
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private function parseConfiguration(): array { |
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try { |
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return Yaml::parseFile( $this->configFile ); |
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} |
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catch ( ParseException $exception ) { |
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$this->logger->critical( 'Unable to read banner server config file.', [ 'exception' => $exception ] ); |
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return []; |
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} |
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} |
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private function getAbsolutePath( string $path ): string { |
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if ( $path[0] === '/' ) { |
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return $path; |
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} |
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return __DIR__ . '/../../../' . $path; |
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} |
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} |
wmde /
banner-server
