optimizations

2026-03-28 19:15:39 +01:00
parent 0b25d9570a
commit cab4fbd83e
509 changed files with 1016804 additions and 1605 deletions
--- a/app/Services/NovaCards/NovaCardRisingService.php
+++ b/app/Services/NovaCards/NovaCardRisingService.php
@@ -0,0 +1,81 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Services\NovaCards;
+
+use App\Models\NovaCard;
+use Carbon\Carbon;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Facades\DB;
+
+/**
+ * Surfaces "rising" cards — recently published cards that are gaining
+ * engagement faster than average, weighted to balance novelty creators.
+ */
+class NovaCardRisingService
+{
+    /** Number of hours a card is eligible for "rising" feed. */
+    private const WINDOW_HOURS = 96;
+
+    /** Cache TTL in seconds. */
+    private const CACHE_TTL = 300;
+
+    public function risingCards(int $limit = 18, bool $cached = true): Collection
+    {
+        if ($cached) {
+            return Cache::remember(
+                'nova_cards.rising.' . $limit,
+                self::CACHE_TTL,
+                fn () => $this->queryRising($limit),
+            );
+        }
+
+        return $this->queryRising($limit);
+    }
+
+    public function invalidateCache(): void
+    {
+        foreach ([6, 18, 24, 36] as $limit) {
+            Cache::forget('nova_cards.rising.' . $limit);
+        }
+    }
+
+    private function queryRising(int $limit): Collection
+    {
+        $cutoff = Carbon::now()->subHours(self::WINDOW_HOURS);
+        $isSqlite = DB::connection()->getDriverName() === 'sqlite';
+        $ageHoursExpression = $isSqlite
+            ? "CASE WHEN ((julianday('now') - julianday(published_at)) * 24.0) < 1 THEN 1 ELSE ((julianday('now') - julianday(published_at)) * 24.0) END"
+            : 'GREATEST(1, TIMESTAMPDIFF(HOUR, published_at, NOW()))';
+        $decayExpression = $isSqlite
+            ? $ageHoursExpression
+            : 'POWER(' . $ageHoursExpression . ', 0.7)';
+        $risingMomentumExpression = '(
+                    (saves_count * 5.0 + remixes_count * 6.0 + likes_count * 4.0 + favorites_count * 2.5 + comments_count * 2.0 + challenge_entries_count * 4.0)
+                    / ' . $decayExpression . '
+                ) AS rising_momentum';
+
+        return NovaCard::query()
+            ->publiclyVisible()
+            ->where('published_at', '>=', $cutoff)
+            // Must have at least one meaningful engagement signal.
+            ->where(function (Builder $q): void {
+                $q->where('saves_count', '>', 0)
+                    ->orWhere('remixes_count', '>', 0)
+                    ->orWhere('likes_count', '>', 1);
+            })
+            ->select([
+                'nova_cards.*',
+                // Rising score: weight recent engagement, penalise by sqrt(age hours) to let novelty show
+                DB::raw($risingMomentumExpression),
+            ])
+            ->orderByDesc('rising_momentum')
+            ->orderByDesc('published_at')
+            ->limit($limit)
+            ->with(['user.profile', 'category', 'template', 'backgroundImage', 'tags'])
+            ->get();
+    }
+}