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<?php |
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declare(strict_types=1); |
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namespace VideoGamesRecords\CoreBundle\Service; |
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use Doctrine\ORM\EntityManagerInterface; |
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use Psr\Cache\CacheItemPoolInterface; |
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use Psr\Log\LoggerInterface; |
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use VideoGamesRecords\CoreBundle\Entity\Video; |
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use VideoGamesRecords\CoreBundle\Repository\VideoRepository; |
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use VideoGamesRecords\CoreBundle\Service\VideoRelevanceScorer; |
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class VideoRecommendationService |
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{ |
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private const CACHE_TTL = 3600; // 1 hour |
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private const CACHE_PREFIX = 'video_recommendations_'; |
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public function __construct( |
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private readonly EntityManagerInterface $entityManager, |
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private readonly CacheItemPoolInterface $cache, |
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private readonly LoggerInterface $logger, |
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private readonly VideoRelevanceScorer $relevanceScorer |
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) { |
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} |
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public function getRelatedVideos(Video $video, int $limit = 10): array |
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{ |
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$cacheKey = self::CACHE_PREFIX . $video->getId(); |
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$cacheItem = $this->cache->getItem($cacheKey); |
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if ($cacheItem->isHit()) { |
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$this->logger->info('Video recommendations served from cache', [ |
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'videoId' => $video->getId(), |
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'cacheKey' => $cacheKey |
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]); |
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return $cacheItem->get(); |
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} |
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$recommendations = $this->generateRecommendations($video, $limit); |
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$cacheItem->set($recommendations); |
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$cacheItem->expiresAfter(self::CACHE_TTL); |
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$this->cache->save($cacheItem); |
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$this->logger->info('Video recommendations generated and cached', [ |
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'videoId' => $video->getId(), |
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'recommendationsCount' => count($recommendations), |
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'cacheKey' => $cacheKey, |
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'ttl' => self::CACHE_TTL |
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]); |
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return $recommendations; |
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} |
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private function generateRecommendations(Video $video, int $limit): array |
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{ |
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$recommendations = []; |
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$usedVideoIds = [$video->getId()]; |
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// Strategy 1: Same game videos (25% - 2-3 videos) |
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$sameGameCount = max(1, (int) ceil($limit * 0.25)); |
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$sameGameVideos = $this->getVideosBySameGame($video, $sameGameCount, $usedVideoIds); |
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$recommendations = array_merge($recommendations, $sameGameVideos); |
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$usedVideoIds = array_merge($usedVideoIds, $this->extractVideoIds($sameGameVideos)); |
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// Strategy 2: Same series videos (25% - 2-3 videos) |
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$sameSeriesCount = max(1, (int) ceil($limit * 0.25)); |
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$sameSeriesVideos = $this->getVideosBySameSeries($video, $sameSeriesCount, $usedVideoIds); |
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$recommendations = array_merge($recommendations, $sameSeriesVideos); |
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$usedVideoIds = array_merge($usedVideoIds, $this->extractVideoIds($sameSeriesVideos)); |
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// Strategy 3: Same genre videos via IGDB (40% - 3-4 videos) |
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$sameGenreCount = max(1, (int) ceil($limit * 0.40)); |
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$sameGenreVideos = $this->getVideosBySameGenres($video, $sameGenreCount, $usedVideoIds); |
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$recommendations = array_merge($recommendations, $sameGenreVideos); |
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$usedVideoIds = array_merge($usedVideoIds, $this->extractVideoIds($sameGenreVideos)); |
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// Strategy 4: Popular/Random videos to fill remaining slots (10%) |
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$remainingCount = $limit - count($recommendations); |
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if ($remainingCount > 0) { |
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$randomVideos = $this->getPopularRandomVideos($remainingCount, $usedVideoIds); |
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$recommendations = array_merge($recommendations, $randomVideos); |
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} |
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// Nouvelle approche : utiliser le scoring de pertinence au lieu du shuffle |
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return $this->applyRelevanceScoring($video, $recommendations, $limit); |
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} |
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private function getVideosBySameGame(Video $video, int $limit, array $excludeIds): array |
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{ |
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if (!$video->getGame()) { |
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return []; |
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} |
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/** @var VideoRepository $repository */ |
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$repository = $this->entityManager->getRepository(Video::class); |
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$qb = $repository->createQueryBuilder('v') |
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->where('v.game = :game') |
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->andWhere('v.id NOT IN (:excludeIds)') |
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->andWhere('v.isActive = true') |
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->setParameter('game', $video->getGame()) |
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->setParameter('excludeIds', $excludeIds) |
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->orderBy('v.viewCount', 'DESC') |
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->addOrderBy('v.createdAt', 'DESC') |
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->setMaxResults($limit); |
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return $qb->getQuery()->getResult(); |
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} |
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private function getVideosBySameSeries(Video $video, int $limit, array $excludeIds): array |
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{ |
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if (!$video->getGame()?->getSerie()) { |
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return []; |
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} |
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/** @var VideoRepository $repository */ |
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$repository = $this->entityManager->getRepository(Video::class); |
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$qb = $repository->createQueryBuilder('v') |
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->join('v.game', 'g') |
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->where('g.serie = :serie') |
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->andWhere('v.id NOT IN (:excludeIds)') |
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->andWhere('v.isActive = true') |
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->setParameter('serie', $video->getGame()->getSerie()) |
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->setParameter('excludeIds', $excludeIds) |
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->orderBy('v.viewCount', 'DESC') |
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->addOrderBy('v.createdAt', 'DESC') |
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->setMaxResults($limit); |
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return $qb->getQuery()->getResult(); |
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} |
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private function getVideosBySameGenres(Video $video, int $limit, array $excludeIds): array |
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{ |
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$game = $video->getGame(); |
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if (!$game?->getIgdbGame()) { |
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return []; |
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} |
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$genres = $game->getIgdbGame()->getGenres(); |
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if ($genres->isEmpty()) { |
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return []; |
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} |
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$genreIds = []; |
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foreach ($genres as $genre) { |
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$genreIds[] = $genre->getId(); |
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} |
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/** @var VideoRepository $repository */ |
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$repository = $this->entityManager->getRepository(Video::class); |
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$qb = $repository->createQueryBuilder('v') |
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->join('v.game', 'g') |
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->join('g.igdbGame', 'ig') |
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->join('ig.genres', 'genre') |
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->where('genre.id IN (:genreIds)') |
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->andWhere('v.id NOT IN (:excludeIds)') |
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->andWhere('v.isActive = true') |
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->andWhere('g.id != :currentGameId') |
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->setParameter('genreIds', $genreIds) |
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->setParameter('excludeIds', $excludeIds) |
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->setParameter('currentGameId', $game->getId()) |
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->groupBy('v.id') |
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->orderBy('COUNT(genre.id)', 'DESC') // Games with more matching genres first |
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->addOrderBy('v.viewCount', 'DESC') |
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->addOrderBy('v.createdAt', 'DESC') |
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->setMaxResults($limit); |
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return $qb->getQuery()->getResult(); |
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} |
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private function getPopularRandomVideos(int $limit, array $excludeIds): array |
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{ |
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/** @var VideoRepository $repository */ |
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$repository = $this->entityManager->getRepository(Video::class); |
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// Get popular videos from the last 30 days |
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$qb = $repository->createQueryBuilder('v') |
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->where('v.id NOT IN (:excludeIds)') |
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->andWhere('v.isActive = true') |
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->andWhere('v.createdAt >= :thirtyDaysAgo') |
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->setParameter('excludeIds', $excludeIds) |
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->setParameter('thirtyDaysAgo', new \DateTime('-30 days')) |
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->orderBy('v.viewCount', 'DESC') |
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->addOrderBy('v.likeCount', 'DESC') |
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->setMaxResults($limit * 3); // Get more to randomize |
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$videos = $qb->getQuery()->getResult(); |
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// Randomize and limit |
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shuffle($videos); |
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$videos = array_slice($videos, 0, $limit); |
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return $videos; |
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} |
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private function extractVideoIds(array $videos): array |
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{ |
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return array_map(fn(Video $video) => $video->getId(), $videos); |
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} |
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private function applyRelevanceScoring(Video $sourceVideo, array $candidateVideos, int $limit): array |
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{ |
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// Utiliser le scorer pour trier par pertinence |
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$rankedVideos = $this->relevanceScorer->rankVideos($sourceVideo, $candidateVideos); |
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// Appliquer la diversification pour éviter la surreprésentation |
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return $this->diversifyRecommendations($rankedVideos, $limit); |
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} |
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/** |
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* Diversifie les recommandations pour éviter trop de vidéos du même jeu/joueur |
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*/ |
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private function diversifyRecommendations(array $rankedVideos, int $limit): array |
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{ |
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$result = []; |
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$gameCount = []; |
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$playerCount = []; |
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$seriesCount = []; |
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// Règles de diversification (configurables) |
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$maxPerGame = max(1, (int) ceil($limit * 0.4)); // Max 40% du même jeu |
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$maxPerPlayer = max(1, (int) ceil($limit * 0.3)); // Max 30% du même joueur |
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$maxPerSeries = max(1, (int) ceil($limit * 0.6)); // Max 60% de la même série |
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foreach ($rankedVideos as $video) { |
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if (count($result) >= $limit) { |
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break; |
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} |
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$gameId = $video->getGame()?->getId() ?? 'no_game'; |
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$playerId = $video->getPlayer()?->getId() ?? 'no_player'; |
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$seriesId = $video->getGame()?->getSerie()?->getId() ?? 'no_series'; |
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$currentGameCount = $gameCount[$gameId] ?? 0; |
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$currentPlayerCount = $playerCount[$playerId] ?? 0; |
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$currentSeriesCount = $seriesCount[$seriesId] ?? 0; |
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// Vérifier les limites de diversification |
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if ( |
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$currentGameCount < $maxPerGame && |
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$currentPlayerCount < $maxPerPlayer && |
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$currentSeriesCount < $maxPerSeries |
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) { |
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$result[] = $video; |
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$gameCount[$gameId] = $currentGameCount + 1; |
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$playerCount[$playerId] = $currentPlayerCount + 1; |
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$seriesCount[$seriesId] = $currentSeriesCount + 1; |
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} |
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} |
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// Si on n'a pas assez de vidéos à cause des contraintes, |
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// ajouter les meilleures restantes sans contraintes |
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if (count($result) < $limit) { |
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$remaining = array_diff($rankedVideos, $result); |
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$needed = $limit - count($result); |
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$result = array_merge($result, array_slice($remaining, 0, $needed)); |
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} |
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return $result; |
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} |
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/** |
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* Méthode pour débugger les scores de recommandation |
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*/ |
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public function getRecommendationsWithScores(Video $video, int $limit = 10): array |
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{ |
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$recommendations = []; |
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$usedVideoIds = [$video->getId()]; |
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// Récupérer les candidats de la même façon |
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$sameGameCount = max(1, (int) ceil($limit * 0.25)); |
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$sameGameVideos = $this->getVideosBySameGame($video, $sameGameCount, $usedVideoIds); |
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$recommendations = array_merge($recommendations, $sameGameVideos); |
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$usedVideoIds = array_merge($usedVideoIds, $this->extractVideoIds($sameGameVideos)); |
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$sameSeriesCount = max(1, (int) ceil($limit * 0.25)); |
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$sameSeriesVideos = $this->getVideosBySameSeries($video, $sameSeriesCount, $usedVideoIds); |
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$recommendations = array_merge($recommendations, $sameSeriesVideos); |
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$usedVideoIds = array_merge($usedVideoIds, $this->extractVideoIds($sameSeriesVideos)); |
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$sameGenreCount = max(1, (int) ceil($limit * 0.40)); |
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$sameGenreVideos = $this->getVideosBySameGenres($video, $sameGenreCount, $usedVideoIds); |
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$recommendations = array_merge($recommendations, $sameGenreVideos); |
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$usedVideoIds = array_merge($usedVideoIds, $this->extractVideoIds($sameGenreVideos)); |
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$remainingCount = $limit - count($recommendations); |
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if ($remainingCount > 0) { |
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$randomVideos = $this->getPopularRandomVideos($remainingCount, $usedVideoIds); |
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$recommendations = array_merge($recommendations, $randomVideos); |
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} |
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296
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|
|
// Retourner avec les scores pour debug |
|
297
|
|
|
return $this->relevanceScorer->rankVideosWithScores($video, $recommendations); |
|
298
|
|
|
} |
|
299
|
|
|
|
|
300
|
|
|
public function clearVideoRecommendationsCache(Video $video): bool |
|
301
|
|
|
{ |
|
302
|
|
|
$cacheKey = self::CACHE_PREFIX . $video->getId(); |
|
303
|
|
|
return $this->cache->deleteItem($cacheKey); |
|
304
|
|
|
} |
|
305
|
|
|
|
|
306
|
|
|
public function getRecommendationStats(Video $video): array |
|
307
|
|
|
{ |
|
308
|
|
|
$game = $video->getGame(); |
|
309
|
|
|
$stats = [ |
|
310
|
|
|
'video_id' => $video->getId(), |
|
311
|
|
|
'has_game' => $game !== null, |
|
312
|
|
|
'has_series' => $game?->getSerie() !== null, |
|
313
|
|
|
'has_igdb_game' => $game?->getIgdbGame() !== null, |
|
314
|
|
|
'genres_count' => 0, |
|
315
|
|
|
'cache_status' => 'miss' |
|
316
|
|
|
]; |
|
317
|
|
|
|
|
318
|
|
|
if ($game?->getIgdbGame()) { |
|
319
|
|
|
$stats['genres_count'] = $game->getIgdbGame()->getGenres()->count(); |
|
320
|
|
|
} |
|
321
|
|
|
|
|
322
|
|
|
$cacheKey = self::CACHE_PREFIX . $video->getId(); |
|
323
|
|
|
$cacheItem = $this->cache->getItem($cacheKey); |
|
324
|
|
|
if ($cacheItem->isHit()) { |
|
325
|
|
|
$stats['cache_status'] = 'hit'; |
|
326
|
|
|
} |
|
327
|
|
|
|
|
328
|
|
|
return $stats; |
|
329
|
|
|
} |
|
330
|
|
|
} |
|
331
|
|
|
|