fix: improve where clause while fetch aggregator rates during fees calculation

app/Enums/PaymentMethod.php

@@ -0,0 +1,11 @@
+<?php
+
+
+namespace App\Enums;
+
+
+abstract class PaymentMethod
+{
+    const CARD = 'CARD'; // Les remboursements ou recharges vers des clients
+    const WALLET = 'WALLET'; // Les paiements effectués par les clients
+}

app/Http/Controllers/PaymentController.php

@@ -2,6 +2,7 @@
 
 namespace App\Http\Controllers;
 
+use App\Enums\PaymentMethod;
 use App\Enums\PaymentTransactionStatus;
 use App\Models\Country;
 use App\Models\PaymentAggregator;
@@ -170,19 +171,24 @@ class PaymentController extends Controller
         $countryCode = $country->code_country;
 
 
-        if($paymentMethod == 'CARD'){
+        if($paymentMethod == PaymentMethod::CARD){
             $aggregator = PaymentAggregator::where('name','like','%stripe%')->first();
         }
 
-        if($paymentMethod == 'WALLET'){
+        if($paymentMethod == PaymentMethod::WALLET){
             $aggregator = PaymentAggregator::where('status',1)->first();
         }
 
         if(!empty($aggregator)){
-            $rate = $aggregator->rates()->where('country', $countryCode)->orWhere('country','ALL')->where('type', $paymentType)
-                ->where('method', $paymentMethod)->when($paymentChannel, function ($q) use($paymentChannel){
+            $rate = $aggregator->rates()->where(function ($q) use($countryCode) {
+                return $q->where('country', $countryCode)->orWhere('country','ALL');
+            })->where('type', $paymentType)
+                ->where('method', $paymentMethod)
+                ->when($paymentChannel, function ($q) use($paymentChannel){
                     return $q->where('channel',$paymentChannel);
-                })->first();
+                })
+                ->latest()
+                ->first();
 
             if(!empty($rate)){
                 if(!empty($rate->fixed_fees)){