🚀 **Automate Meetup Activity Recalculation**

- Introduced `recalculateActivity` method in `Meetup` model to centralize activity and event timestamp updates.
- Added `MeetupEventObserver` to trigger activity recalculation on event save/delete.
- Updated `/meetups:update-activity` command to leverage the new model method for cleanup.
- Enhanced tests to cover various `MeetupEvent` scenarios affecting activity states.

app/Console/Commands/Database/UpdateMeetupActivity.php

@@ -3,12 +3,9 @@
 namespace App\Console\Commands\Database;
 
 use App\Models\Meetup;
-use App\Models\MeetupEvent;
-use Carbon\CarbonInterface;
 use Illuminate\Console\Attributes\Description;
 use Illuminate\Console\Attributes\Signature;
 use Illuminate\Console\Command;
-use Illuminate\Support\Facades\Date;
 
 #[Signature('meetups:update-activity')]
 #[Description('Recalculate is_active and last_event_at for every meetup based on its events.')]
@@ -16,11 +13,9 @@ class UpdateMeetupActivity extends Command
 {
     public function handle(): int
     {
-        $threshold = now()->subYear();
-
-        Meetup::query()->chunkById(200, function ($meetups) use ($threshold) {
+        Meetup::query()->chunkById(200, function ($meetups) {
             foreach ($meetups as $meetup) {
-                $this->updateMeetup($meetup, $threshold);
+                $meetup->recalculateActivity();
             }
         });
 
@@ -28,37 +23,4 @@ class UpdateMeetupActivity extends Command
 
         return Command::SUCCESS;
     }
-
-    private function updateMeetup(Meetup $meetup, CarbonInterface $threshold): void
-    {
-        $lastEventAt = MeetupEvent::query()
-            ->where('meetup_id', $meetup->id)
-            ->where('start', '<=', now())
-            ->max('start');
-
-        $lastEventAt = $lastEventAt ? Date::parse($lastEventAt) : null;
-
-        $hasFutureEvent = MeetupEvent::query()
-            ->where('meetup_id', $meetup->id)
-            ->where('start', '>', now())
-            ->exists();
-
-        $hasActiveRecurrence = MeetupEvent::query()
-            ->where('meetup_id', $meetup->id)
-            ->whereNotNull('recurrence_type')
-            ->where(function ($query) {
-                $query->whereNull('recurrence_end_date')
-                    ->orWhere('recurrence_end_date', '>=', now());
-            })
-            ->exists();
-
-        $isActive = ($lastEventAt && $lastEventAt->greaterThanOrEqualTo($threshold))
-            || $hasFutureEvent
-            || $hasActiveRecurrence;
-
-        $meetup->forceFill([
-            'is_active' => $isActive,
-            'last_event_at' => $lastEventAt,
-        ])->saveQuietly();
-    }
 }