perf: fix N+1 queries; fix ComposeController lint and test namespace

Performance:
- TrendingHashtagService: batch-load hashtags with whereIn/keyBy instead
  of Hashtag::find() per trending row.
- DirectMessageController: eager-load status.media and read the in-memory
  collection instead of firstMedia() issuing a query per DM message.
- GroupsSearchController: batch Profile/Follower/GroupInvitation lookups
  with whereIn instead of per-invitee queries.

Lint/tests:
- ComposeController: whitespace formatting (Pint).
- ComposeControllerTest: correct App\User to App\Models\User, fixing the
  larastan class.notFound error and import ordering.

Full suite: 547 passed. Pint and PHPStan clean.

app/Http/Controllers/ComposeController.php

@@ -396,7 +396,7 @@ class ComposeController extends Controller
                     ];
                 });
         });
-        
+
         $wildcard = config('database.default') === 'pgsql' ? 'ilike' : 'like';
         $q = '%'.$raw.'%';
 

app/Http/Controllers/DirectMessageController.php

@@ -307,13 +307,15 @@ class DirectMessageController extends Controller
         $messages = $res->filter(function ($message) {
             return $message && $message->status;
         })->map(function ($message) use ($uid) {
+            $firstMedia = $message->status->media->sortBy('order')->first();
+
             return [
                 'id' => (string) $message->id,
                 'hidden' => (bool) $message->is_hidden,
                 'isAuthor' => $uid == $message->from_id,
                 'type' => $message->type,
                 'text' => $message->status->caption,
-                'media' => $message->status->firstMedia() ? $message->status->firstMedia()->url() : null,
+                'media' => $firstMedia ? $firstMedia->url() : null,
                 'carousel' => MediaService::get($message->status_id),
                 'created_at' => $message->created_at->format('c'),
                 'timeAgo' => $message->created_at->diffForHumans(null, null, true),

app/Http/Controllers/Groups/GroupsSearchController.php

@@ -42,24 +42,27 @@ class GroupsSearchController extends Controller
             'Invite limit reached'
         );
 
-        $profiles = collect($uid)
-            ->map(function ($u) {
-                return Profile::find($u);
-            })
-            ->filter(function ($u) use ($pid) {
-                return $u &&
-                    $u->id != $pid &&
-                    isset($u->id) &&
-                    Follower::whereFollowingId($pid)
-                        ->whereProfileId($u->id)
-                        ->exists();
-            })
-            ->filter(function ($u) use ($group, $pid) {
-                return GroupInvitation::whereGroupId($group->id)
-                    ->whereFromProfileId($pid)
-                    ->whereToProfileId($u->id)
-                    ->exists() == false;
-            })
+        $candidateIds = collect($uid)
+            ->filter(fn ($u) => $u != $pid)
+            ->unique()
+            ->values();
+
+        $profiles = Profile::whereIn('id', $candidateIds)->get();
+
+        $followedIds = Follower::whereFollowingId($pid)
+            ->whereIn('profile_id', $profiles->pluck('id'))
+            ->pluck('profile_id')
+            ->all();
+
+        $alreadyInvitedIds = GroupInvitation::whereGroupId($group->id)
+            ->whereFromProfileId($pid)
+            ->whereIn('to_profile_id', $profiles->pluck('id'))
+            ->pluck('to_profile_id')
+            ->all();
+
+        $profiles
+            ->filter(fn ($u) => in_array($u->id, $followedIds))
+            ->filter(fn ($u) => ! in_array($u->id, $alreadyInvitedIds))
             ->each(function ($u) use ($gid, $pid) {
                 $gi = new GroupInvitation;
                 $gi->group_id = $gid;

app/Services/TrendingHashtagService.php

@@ -63,27 +63,32 @@ class TrendingHashtagService
         $skipIds = array_merge(self::getBannedHashtags(), self::getNonTrendingHashtags(), self::getNsfwHashtags());
 
         return Cache::remember(self::CACHE_KEY, config('trending.hashtags.ttl'), function () use ($minId, $skipIds) {
-            return StatusHashtag::select('hashtag_id', DB::raw('count(*) as total'))
+            $trending = StatusHashtag::select('hashtag_id', DB::raw('count(*) as total'))
                 ->whereNotIn('hashtag_id', $skipIds)
                 ->where('id', '>', $minId)
                 ->groupBy('hashtag_id')
                 ->orderBy('total', 'desc')
                 ->take(config('trending.hashtags.limit'))
+                ->get();
+
+            $hashtags = Hashtag::whereIn('id', $trending->pluck('hashtag_id'))
                 ->get()
-                ->map(function ($h) {
-                    $hashtag = Hashtag::find($h->hashtag_id);
-                    if (! $hashtag) {
-                        return;
-                    }
-
-                    return [
-                        'id' => $h->hashtag_id,
-                        'total' => $h->total,
-                        'name' => '#'.$hashtag->name,
-                        'hashtag' => $hashtag->name,
-                        'url' => $hashtag->url(),
-                    ];
-                })
+                ->keyBy('id');
+
+            return $trending->map(function ($h) use ($hashtags) {
+                $hashtag = $hashtags->get($h->hashtag_id);
+                if (! $hashtag) {
+                    return;
+                }
+
+                return [
+                    'id' => $h->hashtag_id,
+                    'total' => $h->total,
+                    'name' => '#'.$hashtag->name,
+                    'hashtag' => $hashtag->name,
+                    'url' => $hashtag->url(),
+                ];
+            })
                 ->filter()
                 ->values();
         });

tests/Feature/ComposeControllerTest.php

@@ -2,10 +2,10 @@
 
 namespace Tests\Feature;
 
-use Illuminate\Support\Facades\DB;
+use App\Models\User;
 use Database\Factories\ProfileFactory;
-use App\User;
 use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\DB;
 use PHPUnit\Framework\Attributes\Test;
 use Tests\TestCase;
 
@@ -71,4 +71,4 @@ class ComposeControllerTest extends TestCase
             'country' => 'Philippines',
         ]);
     }
-}
+}