storing analytics data

tests/Feature/Discovery/TrendingServiceTest.php

@@ -0,0 +1,98 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Models\Artwork;
+use App\Services\TrendingService;
+
+// RefreshDatabase is applied automatically to all Feature tests via Pest.php
+
+it('returns zero when no artworks exist', function () {
+    expect(app(TrendingService::class)->recalculate('24h'))->toBe(0);
+    expect(app(TrendingService::class)->recalculate('7d'))->toBe(0);
+});
+
+it('updates trending_score_24h for artworks published within 7 days', function () {
+    $artwork = Artwork::factory()->create([
+        'is_public'    => true,
+        'is_approved'  => true,
+        'published_at' => now()->subHours(6),
+    ]);
+
+    $updated = app(TrendingService::class)->recalculate('24h');
+
+    expect($updated)->toBe(1);
+
+    $artwork->refresh();
+    expect($artwork->trending_score_24h)->toBeFloat();
+    expect($artwork->last_trending_calculated_at)->not->toBeNull();
+})->skip('Requires MySQL: uses GREATEST() and TIMESTAMPDIFF() which are not available in SQLite');
+
+it('updates trending_score_7d for artworks published within 30 days', function () {
+    $artwork = Artwork::factory()->create([
+        'is_public'    => true,
+        'is_approved'  => true,
+        'published_at' => now()->subDays(10),
+    ]);
+
+    $updated = app(TrendingService::class)->recalculate('7d');
+
+    expect($updated)->toBe(1);
+
+    $artwork->refresh();
+    expect($artwork->trending_score_7d)->toBeFloat();
+})->skip('Requires MySQL: uses GREATEST() and TIMESTAMPDIFF() which are not available in SQLite');
+
+it('skips artworks published outside the look-back window', function () {
+    Artwork::factory()->create([
+        'is_public'    => true,
+        'is_approved'  => true,
+        'published_at' => now()->subDays(45), // outside 30-day window
+    ]);
+
+    expect(app(TrendingService::class)->recalculate('7d'))->toBe(0);
+});
+
+it('skips private artworks', function () {
+    Artwork::factory()->create([
+        'is_public'    => false,
+        'is_approved'  => true,
+        'published_at' => now()->subDay(),
+    ]);
+
+    expect(app(TrendingService::class)->recalculate('24h'))->toBe(0);
+});
+
+it('skips unapproved artworks', function () {
+    Artwork::factory()->create([
+        'is_public'    => true,
+        'is_approved'  => false,
+        'published_at' => now()->subDay(),
+    ]);
+
+    expect(app(TrendingService::class)->recalculate('24h'))->toBe(0);
+});
+
+it('score is always non-negative (GREATEST clamp)', function () {
+    // Artwork with no stats — time decay may be large, but score is clamped to ≥ 0
+    $artwork = Artwork::factory()->create([
+        'is_public'    => true,
+        'is_approved'  => true,
+        'published_at' => now()->subDays(6),
+    ]);
+
+    app(TrendingService::class)->recalculate('24h');
+
+    $artwork->refresh();
+    expect($artwork->trending_score_24h)->toBeGreaterThanOrEqualTo(0.0);
+})->skip('Requires MySQL: uses GREATEST() and TIMESTAMPDIFF() which are not available in SQLite');
+
+it('processes multiple artworks in a single run', function () {
+    Artwork::factory()->count(5)->create([
+        'is_public'    => true,
+        'is_approved'  => true,
+        'published_at' => now()->subDay(),
+    ]);
+
+    expect(app(TrendingService::class)->recalculate('7d'))->toBe(5);
+})->skip('Requires MySQL: uses GREATEST() and TIMESTAMPDIFF() which are not available in SQLite');