Gamwall Integration Docs

<?php
// postback.php — receives conversion postbacks from Gamwall

$user_id        = $_GET['user_id']        ?? '';
$offer_name     = $_GET['offer_name']     ?? '';
$payout         = (float)($_GET['payout'] ?? 0);
$reward         = (float)($_GET['reward'] ?? 0);
$conversion_id  = $_GET['transaction_id'] ?? '';
$status         = strtolower($_GET['status'] ?? '');
$ip             = $_GET['ip']             ?? '';

if (empty($user_id) || empty($conversion_id)) {
    http_response_code(400);
    echo json_encode(['success' => false, 'message' => 'Missing required parameters']);
    exit;
}

// 1) Duplicate check — always use conversion_id, not user_id/offer_name,
//    so multi-step offers and chargebacks are handled correctly.
$existing = db_find_conversion_by_id($conversion_id); // your own DB lookup

if ($existing && $existing['status'] === $status) {
    echo json_encode(['success' => false, 'message' => 'Duplicate transaction']);
    exit;
}

// 2) Handle status
if ($status === 'approved') {
    credit_user_balance($user_id, $reward);           // your own logic
} elseif ($status === 'chargeback') {
    deduct_user_balance($user_id, $reward);            // your own logic
}

// 3) Save/update the conversion record
save_conversion($conversion_id, $user_id, $offer_name, $payout, $reward, $status, $ip);

echo json_encode(['success' => true, 'message' => 'Reward added successfully']);

// routes/web.php
Route::get('/postback/gamwall', [PostbackController::class, 'gamwall']);

// app/Http/Controllers/PostbackController.php
namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Conversion;
use App\Models\User;

class PostbackController extends Controller
{
    public function gamwall(Request $request)
    {
        $userId        = $request->query('user_id');
        $offerName     = $request->query('offer_name');
        $payout        = (float) $request->query('payout', 0);
        $reward        = (float) $request->query('reward', 0);
        $conversionId  = $request->query('transaction_id');
        $status        = strtolower($request->query('status', ''));

        if (!$userId || !$conversionId) {
            return response()->json(['success' => false, 'message' => 'Missing parameters'], 400);
        }

        $user = User::find($userId);
        if (!$user) {
            return response()->json(['success' => false, 'message' => 'User not found'], 404);
        }

        // Duplicate check — keyed on conversion_id (works for chargebacks too)
        $existing = Conversion::where('conversion_id', $conversionId)->first();
        if ($existing && $existing->status === $status) {
            return response()->json(['success' => false, 'message' => 'Duplicate transaction']);
        }

        if ($status === 'approved') {
            $user->increment('balance', $reward);
        } elseif ($status === 'chargeback') {
            $user->decrement('balance', $reward);
        }

        Conversion::updateOrCreate(
            ['conversion_id' => $conversionId],
            [
                'user_id'    => $userId,
                'offer_name' => $offerName,
                'payout'     => $payout,
                'reward'     => $reward,
                'status'     => $status,
                'ip'         => $request->ip(),
            ]
        );

        return response()->json(['success' => true, 'message' => 'Reward added successfully']);
    }
}