Cache Schema::hasTable lookups on artwork JSON.

Artwork detail was paying repeated information_schema hits per request. Keep public detail edge-case behavior covered by regression tests.

app/Http/Resources/ArtworkResource.php

@@ -15,6 +15,9 @@ use Illuminate\Support\Facades\Schema;
 
 class ArtworkResource extends JsonResource
 {
+    /** @var array<string, bool> */
+    private array $tablePresence = [];
+
     /**
      * Transform the resource into an array.
      */
@@ -35,14 +38,14 @@ class ArtworkResource extends JsonResource
 
         $followerCount = 0;
         if (!empty($this->user?->id)) {
-            if (Schema::hasTable('user_statistics')) {
+            if ($this->hasTable('user_statistics')) {
                 $followerCount = (int) DB::table('user_statistics')
                     ->where('user_id', (int) $this->user->id)
                     ->value('followers_count');
             }
 
             // Legacy fallback for environments where new tables are unavailable.
-            if (($followerCount <= 0) && Schema::hasTable('friends_list')) {
+            if (($followerCount <= 0) && $this->hasTable('friends_list')) {
                 $followerCount = (int) DB::table('friends_list')
                     ->where('friend_id', (int) $this->user->id)
                     ->count();
@@ -58,19 +61,19 @@ class ArtworkResource extends JsonResource
         $viewerAward = null;
         $isOwner = $viewerId > 0 && $viewerId === (int) ($this->user?->id ?? 0);
 
-        $bookmarksCount = Schema::hasTable('artwork_bookmarks')
+        $bookmarksCount = $this->hasTable('artwork_bookmarks')
             ? (int) DB::table('artwork_bookmarks')->where('artwork_id', (int) $this->id)->count()
             : 0;
 
         if ($viewerId > 0) {
-            if (Schema::hasTable('artwork_likes')) {
+            if ($this->hasTable('artwork_likes')) {
                 $isLiked = DB::table('artwork_likes')
                     ->where('user_id', $viewerId)
                     ->where('artwork_id', (int) $this->id)
                     ->exists();
             }
 
-            if (Schema::hasTable('artwork_bookmarks')) {
+            if ($this->hasTable('artwork_bookmarks')) {
                 $isBookmarked = DB::table('artwork_bookmarks')
                     ->where('user_id', $viewerId)
                     ->where('artwork_id', (int) $this->id)
@@ -83,12 +86,12 @@ class ArtworkResource extends JsonResource
                 ->exists();
 
             if (!empty($this->user?->id)) {
-                if (Schema::hasTable('user_followers')) {
+                if ($this->hasTable('user_followers')) {
                     $isFollowing = DB::table('user_followers')
                         ->where('user_id', (int) $this->user->id)
                         ->where('follower_id', $viewerId)
                         ->exists();
-                } elseif (Schema::hasTable('friends_list')) {
+                } elseif ($this->hasTable('friends_list')) {
                     // Legacy fallback only.
                     $isFollowing = DB::table('friends_list')
                         ->where('user_id', $viewerId)
@@ -97,14 +100,14 @@ class ArtworkResource extends JsonResource
                 }
             }
 
-            if (!empty($this->group?->id) && Schema::hasTable('group_follows')) {
+            if (!empty($this->group?->id) && $this->hasTable('group_follows')) {
                 $isFollowingGroup = DB::table('group_follows')
                     ->where('group_id', (int) $this->group->id)
                     ->where('user_id', $viewerId)
                     ->exists();
             }
 
-            if (Schema::hasTable('artwork_medals')) {
+            if ($this->hasTable('artwork_medals')) {
                 $viewerAward = DB::table('artwork_medals')
                     ->where('user_id', $viewerId)
                     ->where('artwork_id', (int) $this->id)
@@ -279,7 +282,7 @@ class ArtworkResource extends JsonResource
 
     private function resolveScreenshotAssets(): array
     {
-        if (! Schema::hasTable('artwork_files')) {
+        if (! $this->hasTable('artwork_files')) {
             return [];
         }
 
@@ -339,7 +342,7 @@ class ArtworkResource extends JsonResource
         $items = collect();
         $participationWorlds = collect();
 
-        if (Schema::hasTable('world_relations') && Schema::hasTable('worlds')) {
+        if ($this->hasTable('world_relations') && $this->hasTable('worlds')) {
             $relations = WorldRelation::query()
                 ->with('world')
                 ->where('related_type', WorldRelation::TYPE_ARTWORK)
@@ -369,7 +372,7 @@ class ArtworkResource extends JsonResource
             );
         }
 
-        if (Schema::hasTable('world_submissions')) {
+        if ($this->hasTable('world_submissions')) {
             $liveSubmissions = $this->worldSubmissions
                 ->filter(function (WorldSubmission $submission): bool {
                     return (string) $submission->status === WorldSubmission::STATUS_LIVE
@@ -403,7 +406,7 @@ class ArtworkResource extends JsonResource
             World::primeCanonicalEditionIds($participationWorlds->pluck('recurrence_key')->all());
         }
 
-        if (Schema::hasTable('world_reward_grants')) {
+        if ($this->hasTable('world_reward_grants')) {
             $items = $items->concat(app(WorldRewardService::class)->artworkRewardBadges($this->resource));
         }
 
@@ -421,6 +424,11 @@ class ArtworkResource extends JsonResource
             ->all();
     }
 
+    private function hasTable(string $table): bool
+    {
+        return $this->tablePresence[$table] ??= Schema::hasTable($table);
+    }
+
     private function authorCanPublishLinks(): bool
     {
         $level = (int) ($this->user?->level ?? 1);

tests/Feature/Artworks/M18B2ArtworkDetailRegressionTest.php

@@ -0,0 +1,75 @@
+<?php
+
+use App\Models\Artwork;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\DB;
+
+uses(RefreshDatabase::class);
+
+it('keeps the artwork detail edge-case responses intact', function (): void {
+    $artwork = Artwork::factory()->create([
+        'title' => 'M18B2 Artwork',
+        'slug' => 'm18b2-artwork',
+    ]);
+
+    $this->get(route('art.show', ['id' => $artwork->id, 'slug' => 'm18b2-artwork']))
+        ->assertOk();
+
+    $this->get(route('art.show', ['id' => $artwork->id, 'slug' => 'wrong-slug']))
+        ->assertRedirect(route('art.show', ['id' => $artwork->id, 'slug' => 'm18b2-artwork']))
+        ->assertHeader('Location', route('art.show', ['id' => $artwork->id, 'slug' => 'm18b2-artwork']));
+
+    $deleted = Artwork::factory()->create();
+    $deleted->delete();
+
+    $this->get(route('art.show', ['id' => $deleted->id, 'slug' => $deleted->slug]))
+        ->assertStatus(410);
+
+    $private = Artwork::factory()->private()->create();
+    $this->get(route('art.show', ['id' => $private->id, 'slug' => $private->slug]))
+        ->assertForbidden();
+
+    $this->get(route('art.show', ['id' => 999999, 'slug' => 'missing']))
+        ->assertNotFound();
+});
+
+it('performs one primary artwork lookup on the public detail path', function (): void {
+    $artwork = Artwork::factory()->create([
+        'slug' => 'm18b2-query-regression',
+    ]);
+    $primaryLookups = 0;
+
+    DB::listen(function ($query) use (&$primaryLookups): void {
+        $sql = strtolower(preg_replace('/\s+/', ' ', $query->sql));
+
+        if (str_contains($sql, 'from "artworks"')
+            && str_contains($sql, 'where "id" = ?')
+            && str_contains($sql, 'limit 1')) {
+            $primaryLookups++;
+        }
+    });
+
+    $this->get(route('art.show', ['id' => $artwork->id, 'slug' => $artwork->slug]))
+        ->assertOk();
+
+    expect($primaryLookups)->toBe(1);
+});
+
+it('keeps the authenticated artwork detail query count bounded', function (): void {
+    $artwork = Artwork::factory()->create([
+        'slug' => 'm18b2-auth-query-regression',
+    ]);
+    $viewer = User::factory()->create();
+    $queryCount = 0;
+
+    DB::listen(function () use (&$queryCount): void {
+        $queryCount++;
+    });
+
+    $this->actingAs($viewer)
+        ->get(route('art.show', ['id' => $artwork->id, 'slug' => $artwork->slug]))
+        ->assertOk();
+
+    expect($queryCount)->toBeLessThanOrEqual(50);
+});