update

app/Services/ReceivedCommentsInboxService.php

@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Services;
+
+use App\Models\ArtworkComment;
+use App\Models\User;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Support\Carbon;
+use Illuminate\Support\Facades\DB;
+
+final class ReceivedCommentsInboxService
+{
+    public function queryForUser(User $user): Builder
+    {
+        return ArtworkComment::query()
+            ->whereHas('artwork', function ($query) use ($user): void {
+                $query->where('user_id', $user->id)
+                    ->where('is_approved', true)
+                    ->whereNull('deleted_at');
+            })
+            ->where('user_id', '!=', $user->id)
+            ->where('is_approved', true)
+            ->whereNull('deleted_at');
+    }
+
+    public function unreadCountForUser(User $user): int
+    {
+        return (int) $this->unreadQueryForUser($user)->count();
+    }
+
+    public function markInboxRead(User $user): void
+    {
+        $readAt = Carbon::now();
+
+        $this->unreadQueryForUser($user)
+            ->select('artwork_comments.id')
+            ->orderBy('artwork_comments.id')
+            ->chunkById(200, function ($comments) use ($user, $readAt): void {
+                $rows = collect($comments)->map(function ($comment) use ($user, $readAt): array {
+                    return [
+                        'user_id' => $user->id,
+                        'artwork_comment_id' => (int) $comment->id,
+                        'read_at' => $readAt,
+                        'created_at' => $readAt,
+                        'updated_at' => $readAt,
+                    ];
+                })->all();
+
+                if ($rows !== []) {
+                    DB::table('user_received_comment_reads')->insertOrIgnore($rows);
+                }
+            }, 'artwork_comments.id', 'id');
+    }
+
+    private function unreadQueryForUser(User $user): Builder
+    {
+        return $this->queryForUser($user)
+            ->whereNotExists(function ($query) use ($user): void {
+                $query->selectRaw('1')
+                    ->from('user_received_comment_reads as ucr')
+                    ->whereColumn('ucr.artwork_comment_id', 'artwork_comments.id')
+                    ->where('ucr.user_id', $user->id);
+            });
+    }
+}