Added Business Listener for business wallet

app/Listeners/BusinessUpdateListener.php

@@ -5,12 +5,13 @@ namespace App\Listeners;
 use App\Models\User;
 use App\Models\Business;
 use Illuminate\Support\Arr;
+use App\Channels\FcmChannel;
 use App\Events\BusinessUpdate;
 use App\Events\BusinessUserCreate;
 use App\Notifications\DBNotification;
+use App\Notifications\FcmNotification;
 use App\Notifications\MailNotification;
 use Illuminate\Queue\InteractsWithQueue;
-
 use Illuminate\Contracts\Queue\ShouldQueue;
 use Illuminate\Support\Facades\Notification;
 
@@ -19,14 +20,68 @@ class BusinessUpdateListener
     public function handle(BusinessUpdate $event)
     {
         $payload = $event->message;
+        $business = Business::findOrFail($payload->business)->load('owners');
+
+        $this->checkWalletIsRunningLow($business);
+        $this->checkWalletIsEmptyOrNegative($business);
+        $this->accountHasBeenSuspended($business);
+    }
+
+    public function checkWalletIsRunningLow(Business $business): void
+    {
+        $moving_average_days = 7;
+        $predict_ahead_hours = 24;
+
+        $hours = $moving_average_days * 24;
+        $business->load([
+            'cost' => fn ($query) => $query->where('created_at', '>=', now('Asia/Tehran')->subHours($hours)),
+        ]);
+
+        // The wallet is running out
+        // Calculate the average consumption of the N past days
+        $average_cost = $business->cost->sum('cost') / $hours;
+
+        // Average hourly consumption multiplied by the next 24 hours
+        // If the account does not charge as much as in the next 24 hours, notified.
+        $message = ['body' => __('notification.business.wallet_almost_empty')];
+        if (($business->wallet / $predict_ahead_hours) < $average_cost) {
+            Notification::send($business->owners, new MailNotification($message));
+            Notification::send($business->owners, new DBNotification($message));
+        }
+    }
+
+    public function checkWalletIsEmptyOrNegative(Business $business): void
+    {
+        $message = ['body' => __('notification.business.wallet_empty')];
+        if ($business->wallet <= 0) {
+            Notification::send($business->owners, new MailNotification($message));
+            Notification::send($business->owners, new DBNotification($message));
+        }
+    }
+
+    public function accountHasBeenSuspended(Business $business): void
+    {
+        if ($business->wallet > 0) {
+            return;
+        }
+
+        $recent_payments_number = 10;
+        $negativity_threshold = 20;
+        $business->load([
+            'transactions' => fn ($query) => $query->where('succeeded', '=', true)
+                ->orderBy('created_at')
+                ->take($recent_payments_number),
+        ]);
 
-        $wallet = $payload?->data?->diff?->wallet;
-        $owners = Business::findOrFail($payload->business)->owners;
-        $message = ['body' => 'Test'];
+        // Your account has been blocked.
+        // What is the average of the last 10 payments?
+        $average_payment = $business->transactions->average('amount');
 
-        if ($wallet < 0) {
-            Notification::send($owners, new MailNotification($message));
-            Notification::send($owners, new DBNotification($message));
+        $threshold = $average_payment / 100 * $negativity_threshold;
+        $message = ['body' => __('notification.business.suspended')];
+        if ($business->wallet < $threshold) {
+            Notification::send($business->owners, new MailNotification($message));
+            Notification::send($business->owners, new DBNotification($message));
         }
     }
 }

app/Models/Business.php

@@ -43,6 +43,7 @@ class Business extends Model implements HasMedia
     protected $casts = [
         'has_avatar' => 'boolean',
         'calculated_at' => 'datetime',
+        'wallet' => 'integer',
     ];
 
     public function getValueOf(?string $key)

resources/lang/fa/notification.php

@@ -37,7 +37,9 @@ return [
 
     'business' => [
         'update' => 'کاربر :user به کسب و کار :business اضافه شد.',
-        'update_wallet' => 'پول رو میدی یا پولت کنم',
+        'wallet_almost_empty' => 'کیف پول تقریبا خالی است.',
+        'wallet_empty' => 'کیف پول خالی است.',
+        'suspended' => 'حساب مسدود شد.',
     ],
 
 ];