Offer 4x6 label downloads alongside A4

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

app/Http/Controllers/ShippingController.php

@@ -227,11 +227,12 @@ class ShippingController extends Controller
         $order = collect($orders)->first(fn ($order) => (string) ($order['OrderLineId'] ?? '') === $orderLineId);
         $hash = $order ? $parcel2Go->labelHash($order) : null;
         abort_unless($hash, 404);
-        $pdf = $parcel2Go->labelPdf($orderLineId, $hash);
+        $size = $request->query('size') === '4x6' ? '4x6' : 'a4';
+        $pdf = $parcel2Go->labelPdf($orderLineId, $hash, $size === '4x6' ? 'Label4x6' : 'A4');
 
         return response($pdf, 200, [
             'Content-Type' => 'application/pdf',
-            'Content-Disposition' => 'attachment; filename="parcel2go-'.$orderLineId.'.pdf"',
+            'Content-Disposition' => 'attachment; filename="parcel2go-'.$orderLineId.'-'.$size.'.pdf"',
             'Cache-Control' => 'private, no-store',
         ]);
     }

app/Services/Parcel2Go.php

@@ -182,13 +182,14 @@ class Parcel2Go
         return filled($query['hash'] ?? null) ? (string) $query['hash'] : null;
     }
 
-    public function labelPdf(string $reference, string $hash): string
+    /** @param  'A4'|'Label4x6'  $media */
+    public function labelPdf(string $reference, string $hash, string $media = 'A4'): string
     {
         $token = $this->profileConnected() ? $this->profileAccessToken() : $this->accessToken();
         $data = Http::withToken($token)->acceptJson()->connectTimeout(3)->timeout(20)
             ->get($this->url('labels/'.$reference), [
                 'referenceType' => 'OrderLineId', 'detailLevel' => 'Labels',
-                'labelMedia' => 'A4', 'labelFormat' => 'PDF', 'hash' => $hash,
+                'labelMedia' => $media, 'labelFormat' => 'PDF', 'hash' => $hash,
             ])->throw()->json();
         $encoded = $data['Base64EncodedLabels'][0] ?? '';
         $pdf = is_string($encoded) ? base64_decode($encoded, true) : false;