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<?php |
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namespace CSlant\Blog\Api\Services; |
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use CSlant\Blog\Api\Supports\Queries\QueryPost; |
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use CSlant\Blog\Core\Enums\StatusEnum; |
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use CSlant\Blog\Core\Facades\Base\SlugHelper; |
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use CSlant\Blog\Core\Http\Responses\Base\BaseHttpResponse; |
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use CSlant\Blog\Core\Models\Post; |
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use CSlant\Blog\Core\Models\Slug; |
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use Illuminate\Contracts\Pagination\LengthAwarePaginator; |
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use Illuminate\Support\Arr; |
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/** |
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* Class PostService |
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* |
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* @package CSlant\Blog\Api\Services |
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* |
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* @method BaseHttpResponse httpResponse() |
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*/ |
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class PostService |
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{ |
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/** |
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* @param array<string, mixed> $filters |
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* |
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* @return LengthAwarePaginator<int, Post> |
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*/ |
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public function getCustomFilters(array $filters): LengthAwarePaginator |
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{ |
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$query = Post::query()->withCount(['comments', 'likes'])->with(['comments', 'likes']); |
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$query = QueryPost::setBaseCustomFilterQuery($query, $filters); |
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$query = $query |
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->wherePublished() |
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->orderBy( |
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Arr::get($filters, 'order_by', 'updated_at'), |
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Arr::get($filters, 'order', 'desc') |
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); |
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return $query->paginate((int) $filters['per_page']); |
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} |
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/** |
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* Find post by slug |
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* |
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* @param string $slug |
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* @return null|Post |
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*/ |
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public function findBySlug(string $slug): ?Post |
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{ |
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/** @var Slug $slugModel */ |
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$slugModel = SlugHelper::getSlug($slug, SlugHelper::getPrefix(Post::getBaseModel())); |
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if (!$slugModel) { |
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return null; |
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} |
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return Post::query() |
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->where('id', $slugModel->reference_id) |
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->where('status', StatusEnum::PUBLISHED) |
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->with(['categories', 'tags']) |
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->first(); |
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} |
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/** |
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* Get navigation posts based on content relevance |
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* |
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* @param Post $currentPost |
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* @return array{previous: null|Post, next: null|Post} |
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*/ |
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public function getNavigationPosts(Post $currentPost): array |
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{ |
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$categoryIds = $currentPost->categories->pluck('id')->toArray(); |
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$tagIds = $currentPost->tags->pluck('id')->toArray(); |
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if (empty($categoryIds) && empty($tagIds)) { |
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return ['previous' => null, 'next' => null]; |
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} |
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// Get all published posts except current one |
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$posts = Post::query() |
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->wherePublished() |
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->where('id', '!=', $currentPost->id) |
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->with(['slugable', 'categories', 'tags', 'author']) |
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->get(); |
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if ($posts->isEmpty()) { |
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return ['previous' => null, 'next' => null]; |
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} |
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// Calculate relevance score for each post |
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$scoredPosts = $posts->map(function ($post) use ($categoryIds, $tagIds) { |
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$post->load(['categories', 'tags']); |
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$postCategoryIds = $post->categories->pluck('id')->toArray(); |
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$postTagIds = $post->tags->pluck('id')->toArray(); |
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// Calculate shared categories and tags |
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$sharedCategories = count(array_intersect($categoryIds, $postCategoryIds)); |
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$sharedTags = count(array_intersect($tagIds, $postTagIds)); |
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// Weight categories higher than tags |
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$relevanceScore = ($sharedCategories * 3) + ($sharedTags * 1); |
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$post->relevance_score = $relevanceScore; |
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return $post; |
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}); |
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// Filter posts with relevance score > 0 |
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$relevantPosts = $scoredPosts |
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->filter(function ($post) { |
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return $post->relevance_score > 0; |
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}) |
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->sortByDesc('relevance_score') |
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->values(); |
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if ($relevantPosts->isEmpty()) { |
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return ['previous' => null, 'next' => null]; |
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} |
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// Group posts by relevance score |
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$groupedByScore = $relevantPosts->groupBy('relevance_score'); |
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$scores = $groupedByScore->keys()->sortDesc(); |
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$previous = null; |
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$next = null; |
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// Get highest scoring post as previous |
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$highestScorePosts = $groupedByScore->get($scores->first()); |
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$previous = $highestScorePosts->first(); |
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// For next, try to get a different post |
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if ($scores->count() > 1) { |
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// If we have multiple score levels, get from second highest |
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$secondHighestPosts = $groupedByScore->get($scores->get(1)); |
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$next = $secondHighestPosts->first(); |
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} else { |
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// If all posts have same score, get second post if available |
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$next = $highestScorePosts->count() > 1 ? $highestScorePosts->get(1) : null; |
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} |
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return [ |
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'previous' => $previous, |
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'next' => $next, |
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]; |
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} |
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} |
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cslant /
blog-api-package
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