update 2.0

.idea/php.xml

       <path value="$PROJECT_DIR$/vendor/symfony/polyfill-intl-idn" />
       <path value="$PROJECT_DIR$/vendor/symfony/event-dispatcher-contracts" />
       <path value="$PROJECT_DIR$/vendor/symfony/event-dispatcher" />
+      <path value="$PROJECT_DIR$/vendor/symfony/http-client-contracts" />
+      <path value="$PROJECT_DIR$/vendor/illuminate/macroable" />
+      <path value="$PROJECT_DIR$/vendor/illuminate/collections" />
     </include_path>
   </component>
   <component name="PhpProjectSharedConfiguration" php_language_level="7.1" />

composer.json

     "readme": "README.md",
     "require": {
         "php": ">=7.1",
-        "illuminate/support": ">=5.0 <8.0",
-        "illuminate/http": ">=5.0 <8.0"
+        "illuminate/support": ">=5.0 <9.0",
+        "illuminate/http": ">=5.0 <9.0"
     },
     "suggest": {
         "mirfalah/laravel-payment-senangpay": "^1.0",

src/Contracts/PaymentGatewayDriver.php

 
     public function verifyGatewayCallback(Request $request, Response &$response = null): bool;
 
-    public function getBillIdFromRequest(Request $request);
+    public function getBillIdFromRequest(Request $request): string;
+
+    public function getBillStatus(Request $request): int;
+
+    public function isBillSuccess(Request $request): bool;
+
+    public function isBillFailed(Request $request): bool;
+
+    public function isBillPending(Request $request): bool;
 }

src/Events/CallbackVerifiedEvent.php

+<?php
+
+
+namespace MirfalahTech\Laravel\Payment\Events;
+
+
+class CallbackVerifiedEvent extends PaymentGatewayEvent
+{
+
+}

src/Events/PaymentFailedEvent.php

+<?php
+
+
+namespace MirfalahTech\Laravel\Payment\Events;
+
+
+class PaymentFailedEvent extends PaymentGatewayEvent
+{
+
+}

src/Events/PaymentGatewayEvent.php

+<?php
+
+
+namespace MirfalahTech\Laravel\Payment\Events;
+
+
+use Illuminate\Http\Request;
+use MirfalahTech\Laravel\Payment\Contracts\PaymentGatewayDriver;
+
+abstract class PaymentGatewayEvent
+{
+    protected $gateway;
+    protected $gatewayDriver;
+    protected $request;
+
+    public function __construct(string $gateway, PaymentGatewayDriver $gatewayDriver, Request $request)
+    {
+        $this->gateway = $gateway;
+        $this->gatewayDriver = $gatewayDriver;
+        $this->request = $request;
+    }
+
+    /**
+     * @return string
+     */
+    public function getGateway(): string
+    {
+        return $this->gateway;
+    }
+
+    /**
+     * @return PaymentGatewayDriver
+     */
+    public function getDriver(): PaymentGatewayDriver
+    {
+        return $this->gatewayDriver;
+    }
+
+    /**
+     * @return Request
+     */
+    public function getRequest(): Request
+    {
+        return $this->request;
+    }
+}

src/Events/PaymentPendingEvent.php

+<?php
+
+
+namespace MirfalahTech\Laravel\Payment\Events;
+
+
+class PaymentPendingEvent extends PaymentGatewayEvent
+{
+
+}

src/Events/PaymentSuccessEvent.php

+<?php
+
+
+namespace MirfalahTech\Laravel\Payment\Events;
+
+
+class PaymentSuccessEvent extends PaymentGatewayEvent
+{
+
+}

src/Events/ReturnVerifiedEvent.php

+<?php
+
+
+namespace MirfalahTech\Laravel\Payment\Events;
+
+
+class ReturnVerifiedEvent extends PaymentGatewayEvent
+{
+
+}

src/Facade/Payment.php

  */
 class Payment extends Facade
 {
+    const SUCCESS = 1;
+    const FAILED = -1;
+    const PENDING = 0;
+
     protected static function getFacadeAccessor()
     {
         return 'payment';

src/Traits/BillStatusBoolean.php

+<?php
+/** @noinspection PhpUndefinedMethodInspection */
+
+namespace MirfalahTech\Laravel\Payment\Traits;
+
+
+use Illuminate\Http\Request;
+
+trait BillStatusBoolean
+{
+    public function isBillSuccess(Request $request): bool
+    {
+        return $this->getBillStatus($request) > 0;
+    }
+
+    public function isBillFailed(Request $request): bool
+    {
+        return $this->getBillStatus($request) < 0;
+    }
+
+    public function isBillPending(Request $request): bool
+    {
+        return $this->getBillStatus($request) == 0;
+    }
+}