ladill-mini/app/Http/Controllers/Public/PaymentController.php

<?php

namespace App\Http\Controllers\Public;

use App\Http\Controllers\Controller;
use App\Models\QrCode;
use App\Services\Mini\MiniPaymentService;
use App\Support\LadillLink;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;
use RuntimeException;

class PaymentController extends Controller
{
    public function __construct(private MiniPaymentService $payments) {}

    public function pay(Request $request, string $shortCode): JsonResponse|RedirectResponse
    {
        $qrCode = QrCode::query()
            ->with('user.qrSetting')
            ->where('short_code', $shortCode)
            ->where('type', QrCode::TYPE_PAYMENT)
            ->where('is_active', true)
            ->firstOrFail();

        $validated = $request->validate([
            'amount' => 'required|numeric|min:0.01',
        ]);

        try {
            $result = $this->payments->initiate($qrCode, $validated);
        } catch (RuntimeException $e) {
            if ($request->expectsJson()) {
                return response()->json(['error' => $e->getMessage()], 422);
            }

            return back()->withInput()->with('error', $e->getMessage());
        }

        if ($request->expectsJson()) {
            return response()->json(['checkout_url' => $result['checkout_url']]);
        }

        return redirect()->away($result['checkout_url']);
    }

    public function callback(Request $request, string $shortCode): RedirectResponse|View
    {
        $reference = trim((string) $request->query('reference', ''));
        if ($reference === '') {
            return redirect()->away(LadillLink::url($shortCode))->with('error', 'Missing payment reference.');
        }

        try {
            $payment = $this->payments->complete($reference);
        } catch (RuntimeException $e) {
            return redirect()->away(LadillLink::url($shortCode))->with('error', $e->getMessage());
        }

        return view('public.qr.payment-confirmed', [
            'payment' => $payment,
            'qrCode' => $payment->qrCode,
        ]);
    }
}