Email digital receipts, add promo settings, and apply tips at charge.

Send real receipt emails from the customer display and sale page, store
branch promo content for the idle screen, and fold selected tips into totals.

app/Http/Controllers/Pos/SaleController.php

@@ -7,6 +7,7 @@ use App\Http\Controllers\Pos\Concerns\ScopesToAccount;
 use App\Models\PosSale;
 use App\Services\CrossApp\CrossAppLinkService;
 use App\Services\Pos\PosSaleService;
+use App\Services\Pos\ReceiptEmailService;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
 use Illuminate\View\View;
@@ -19,6 +20,7 @@ class SaleController extends Controller
     public function __construct(
         private PosSaleService $sales,
         private CrossAppLinkService $links,
+        private ReceiptEmailService $receiptEmail,
     ) {}
 
     public function index(Request $request): View
@@ -69,6 +71,27 @@ class SaleController extends Controller
         return redirect()->route('pos.sales.show', $sale)->with('success', 'Sale cancelled.');
     }
 
+    public function emailReceipt(Request $request, PosSale $sale): RedirectResponse
+    {
+        $this->authorizeOwner($request, $sale);
+
+        if (! $sale->isPaid()) {
+            return back()->with('error', 'Only paid sales can be emailed as receipts.');
+        }
+
+        $data = $request->validate([
+            'email' => ['required', 'email', 'max:255'],
+        ]);
+
+        try {
+            $result = $this->receiptEmail->send($sale, $data['email']);
+        } catch (RuntimeException $e) {
+            return back()->with('error', $e->getMessage());
+        }
+
+        return back()->with('success', $result['message']);
+    }
+
     public function destroy(Request $request, PosSale $sale): RedirectResponse
     {
         $this->authorizeOwner($request, $sale);