feat: subscriptions

app/Http/Controllers/BillingController.php

@@ -2,7 +2,7 @@
 
 namespace App\Http\Controllers;
 
-use App\Enums\CreditProductType;
+use App\Enums\BillingProductPurpose;
 use App\Http\Resources\CreditProductResource;
 use App\Models\CreditProduct;
 use App\Services\MobileDeepLink;
@@ -18,6 +18,7 @@ class BillingController extends Controller
     {
         $products = CreditProduct::query()
             ->active()
+            ->whereNotNull('purpose')
             ->whereNotNull('stripe_price_id')
             ->orderBy('sort_order')
             ->orderBy('amount')
@@ -32,6 +33,7 @@ class BillingController extends Controller
         PaymentTransactionRecorder $transactions,
     ): JsonResponse {
         abort_unless($creditProduct->is_active, 404);
+        abort_unless($creditProduct->purpose !== null, 404);
         abort_unless(filled($creditProduct->stripe_price_id), 404);
 
         $user = $request->user();
@@ -39,8 +41,7 @@ class BillingController extends Controller
 
         $metadata = [
             'credit_product_id' => $creditProduct->getKey(),
-            'credit_product_type' => $creditProduct->type->value,
-            'credits' => (string) $creditProduct->credits,
+            'billing_product_purpose' => $creditProduct->purpose->value,
         ];
         $sessionOptions = [
             'success_url' => $this->redirectUrl('success'),
@@ -49,7 +50,7 @@ class BillingController extends Controller
             'client_reference_id' => $creditProduct->getKey(),
         ];
 
-        if ($creditProduct->type === CreditProductType::MONTHLY) {
+        if ($creditProduct->purpose === BillingProductPurpose::SUBSCRIPTION) {
             if ($user->subscribed('default')) {
                 return response()->json([
                     'message' => __('api.billing.active_subscription_exists'),
@@ -61,6 +62,12 @@ class BillingController extends Controller
                 ->withMetadata($metadata)
                 ->checkout($sessionOptions);
         } else {
+            if ($user->hasPurchasedCertification() || $user->account_verified_at !== null) {
+                return response()->json([
+                    'message' => __('api.billing.certification_already_purchased'),
+                ], 409);
+            }
+
             $sessionOptions['invoice_creation'] = [
                 'enabled' => true,
                 'invoice_data' => [