diff --git a/README-EN.md b/README-EN.md
index c8be3ef..087a22b 100644
--- a/README-EN.md
+++ b/README-EN.md
@@ -113,7 +113,7 @@ payment was successful).
     
     return PaymentGateway::purchase($invoice, function (string $transactionId) {
         // Save transaction_id and do stuff...
-    })->render();
+    })->view();
 ```
 
 ### Verification
diff --git a/README.md b/README.md
index 50e40df..9c2c6e5 100644
--- a/README.md
+++ b/README.md
@@ -155,7 +155,7 @@
     
     return PaymentGateway::purchase($invoice, function (string $transactionId) {
         // Save transaction_id and do stuff...
-    })->render();
+    })->view();
 ```
 
 <div dir="rtl">
@@ -170,7 +170,7 @@
     return PaymentGateway::setGateway('mellat.app')
             ->purchase($invoice, function (string $transactionId) {
                 // Save transaction_id and do stuff...
-            })->render();
+            })->view();
 ```
 
 <div dir="rtl">
diff --git a/composer.json b/composer.json
index cf0c838..e5ba644 100644
--- a/composer.json
+++ b/composer.json
@@ -5,18 +5,21 @@
     "type": "library",
     "license": "MIT",
     "keywords": [
+        "laravel",
+        "php",
         "payment",
         "bank",
         "shetab",
         "gateway",
+        "invoice",
         "behpardakht",
-        "saman",
         "mellat",
-        "zarinpal",
+        "saman",
+        "sep",
         "pasargad",
         "eghtesad novin",
-        "online payment",
-        "laravel payment"
+        "zarinpal",
+        "zibal"
     ],
     "authors": [
         {
@@ -27,11 +30,15 @@
     "require": {
         "php": "^7.4|^8.0",
         "ext-json": "*",
-        "ext-soap": "*",
-        "ext-openssl": "*",
         "illuminate/support": "^7.0|^8.0",
         "ramsey/uuid": "^4.0"
     },
+    "suggest": {
+        "ext-bcmath": "Needed to use pasargad gateway",
+        "ext-openssl": "Needed to use eghtesad novin gateway",
+        "ext-simplexml": "Needed to use pasargad gateway",
+        "ext-soap": "Needed to use SOAP drivers: mellat, saman"
+    },
     "require-dev": {
         "orchestra/testbench": "^6.18"
     },
@@ -45,6 +52,9 @@
             "Omalizadeh\\MultiPayment\\Tests\\": "tests/"
         }
     },
+    "config": {
+        "sort-packages": true
+    },
     "extra": {
         "laravel": {
             "providers": [
@@ -55,5 +65,6 @@
             }
         }
     },
+    "minimum-stability": "dev",
     "prefer-stable": true
-}
\ No newline at end of file
+}
diff --git a/composer.lock b/composer.lock
index e9af772..4502346 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "1135dfe18ef9d2c74c0141dd5bef5f8c",
+    "content-hash": "c00fae7c1dc02cb9488409e5fe20f380",
     "packages": [
         {
             "name": "brick/math",
@@ -508,16 +508,16 @@
         },
         {
             "name": "laravel/framework",
-            "version": "v8.58.0",
+            "version": "v8.61.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/laravel/framework.git",
-                "reference": "1b819bf99d87bd543a4d4895e5b3350f61ea7a23"
+                "reference": "3d528d3d3c8ecb444b50a266c212a52973a6669b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/laravel/framework/zipball/1b819bf99d87bd543a4d4895e5b3350f61ea7a23",
-                "reference": "1b819bf99d87bd543a4d4895e5b3350f61ea7a23",
+                "url": "https://api.github.com/repos/laravel/framework/zipball/3d528d3d3c8ecb444b50a266c212a52973a6669b",
+                "reference": "3d528d3d3c8ecb444b50a266c212a52973a6669b",
                 "shasum": ""
             },
             "require": {
@@ -554,7 +554,8 @@
                 "tightenco/collect": "<5.5.33"
             },
             "provide": {
-                "psr/container-implementation": "1.0"
+                "psr/container-implementation": "1.0",
+                "psr/simple-cache-implementation": "1.0"
             },
             "replace": {
                 "illuminate/auth": "self.version",
@@ -672,7 +673,7 @@
                 "issues": "https://github.com/laravel/framework/issues",
                 "source": "https://github.com/laravel/framework"
             },
-            "time": "2021-08-31T13:55:57+00:00"
+            "time": "2021-09-14T13:31:32+00:00"
         },
         {
             "name": "league/commonmark",
@@ -963,16 +964,16 @@
         },
         {
             "name": "league/mime-type-detection",
-            "version": "1.7.0",
+            "version": "1.8.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/thephpleague/mime-type-detection.git",
-                "reference": "3b9dff8aaf7323590c1d2e443db701eb1f9aa0d3"
+                "reference": "b38b25d7b372e9fddb00335400467b223349fd7e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/thephpleague/mime-type-detection/zipball/3b9dff8aaf7323590c1d2e443db701eb1f9aa0d3",
-                "reference": "3b9dff8aaf7323590c1d2e443db701eb1f9aa0d3",
+                "url": "https://api.github.com/repos/thephpleague/mime-type-detection/zipball/b38b25d7b372e9fddb00335400467b223349fd7e",
+                "reference": "b38b25d7b372e9fddb00335400467b223349fd7e",
                 "shasum": ""
             },
             "require": {
@@ -1003,7 +1004,7 @@
             "description": "Mime-type detection for Flysystem",
             "support": {
                 "issues": "https://github.com/thephpleague/mime-type-detection/issues",
-                "source": "https://github.com/thephpleague/mime-type-detection/tree/1.7.0"
+                "source": "https://github.com/thephpleague/mime-type-detection/tree/1.8.0"
             },
             "funding": [
                 {
@@ -1015,28 +1016,28 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-01-18T20:58:21+00:00"
+            "time": "2021-09-25T08:23:19+00:00"
         },
         {
             "name": "monolog/monolog",
-            "version": "2.3.2",
+            "version": "2.3.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Seldaek/monolog.git",
-                "reference": "71312564759a7db5b789296369c1a264efc43aad"
+                "reference": "437e7a1c50044b92773b361af77620efb76fff59"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Seldaek/monolog/zipball/71312564759a7db5b789296369c1a264efc43aad",
-                "reference": "71312564759a7db5b789296369c1a264efc43aad",
+                "url": "https://api.github.com/repos/Seldaek/monolog/zipball/437e7a1c50044b92773b361af77620efb76fff59",
+                "reference": "437e7a1c50044b92773b361af77620efb76fff59",
                 "shasum": ""
             },
             "require": {
                 "php": ">=7.2",
-                "psr/log": "^1.0.1"
+                "psr/log": "^1.0.1 || ^2.0 || ^3.0"
             },
             "provide": {
-                "psr/log-implementation": "1.0.0"
+                "psr/log-implementation": "1.0.0 || 2.0.0 || 3.0.0"
             },
             "require-dev": {
                 "aws/aws-sdk-php": "^2.4.9 || ^3.0",
@@ -1051,7 +1052,7 @@
                 "phpunit/phpunit": "^8.5",
                 "predis/predis": "^1.1",
                 "rollbar/rollbar": "^1.3",
-                "ruflin/elastica": ">=0.90 <7.0.1",
+                "ruflin/elastica": ">=0.90@dev",
                 "swiftmailer/swiftmailer": "^5.3|^6.0"
             },
             "suggest": {
@@ -1059,8 +1060,11 @@
                 "doctrine/couchdb": "Allow sending log messages to a CouchDB server",
                 "elasticsearch/elasticsearch": "Allow sending log messages to an Elasticsearch server via official client",
                 "ext-amqp": "Allow sending log messages to an AMQP server (1.0+ required)",
+                "ext-curl": "Required to send log messages using the IFTTTHandler, the LogglyHandler, the SendGridHandler, the SlackWebhookHandler or the TelegramBotHandler",
                 "ext-mbstring": "Allow to work properly with unicode symbols",
                 "ext-mongodb": "Allow sending log messages to a MongoDB server (via driver)",
+                "ext-openssl": "Required to send log messages using SSL",
+                "ext-sockets": "Allow sending log messages to a Syslog server (via UDP driver)",
                 "graylog2/gelf-php": "Allow sending log messages to a GrayLog2 server",
                 "mongodb/mongodb": "Allow sending log messages to a MongoDB server (via library)",
                 "php-amqplib/php-amqplib": "Allow sending log messages to an AMQP server using php-amqplib",
@@ -1099,7 +1103,7 @@
             ],
             "support": {
                 "issues": "https://github.com/Seldaek/monolog/issues",
-                "source": "https://github.com/Seldaek/monolog/tree/2.3.2"
+                "source": "https://github.com/Seldaek/monolog/tree/2.3.4"
             },
             "funding": [
                 {
@@ -1111,20 +1115,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-07-23T07:42:52+00:00"
+            "time": "2021-09-15T11:27:21+00:00"
         },
         {
             "name": "nesbot/carbon",
-            "version": "2.52.0",
+            "version": "2.53.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/briannesbitt/Carbon.git",
-                "reference": "369c0e2737c56a0f39c946dd261855255a6fccbe"
+                "reference": "f4655858a784988f880c1b8c7feabbf02dfdf045"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/briannesbitt/Carbon/zipball/369c0e2737c56a0f39c946dd261855255a6fccbe",
-                "reference": "369c0e2737c56a0f39c946dd261855255a6fccbe",
+                "url": "https://api.github.com/repos/briannesbitt/Carbon/zipball/f4655858a784988f880c1b8c7feabbf02dfdf045",
+                "reference": "f4655858a784988f880c1b8c7feabbf02dfdf045",
                 "shasum": ""
             },
             "require": {
@@ -1136,7 +1140,7 @@
             },
             "require-dev": {
                 "doctrine/orm": "^2.7",
-                "friendsofphp/php-cs-fixer": "^2.14 || ^3.0",
+                "friendsofphp/php-cs-fixer": "^3.0",
                 "kylekatarnls/multi-tester": "^2.0",
                 "phpmd/phpmd": "^2.9",
                 "phpstan/extension-installer": "^1.0",
@@ -1205,7 +1209,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-08-14T19:10:52+00:00"
+            "time": "2021-09-06T09:29:23+00:00"
         },
         {
             "name": "nette/schema",
@@ -1271,20 +1275,20 @@
         },
         {
             "name": "nette/utils",
-            "version": "v3.2.3",
+            "version": "v3.2.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nette/utils.git",
-                "reference": "5c36cc1ba9bb6abb8a9e425cf054e0c3fd5b9822"
+                "reference": "9cd80396ca58d7969ab44fc7afcf03624dfa526e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/nette/utils/zipball/5c36cc1ba9bb6abb8a9e425cf054e0c3fd5b9822",
-                "reference": "5c36cc1ba9bb6abb8a9e425cf054e0c3fd5b9822",
+                "url": "https://api.github.com/repos/nette/utils/zipball/9cd80396ca58d7969ab44fc7afcf03624dfa526e",
+                "reference": "9cd80396ca58d7969ab44fc7afcf03624dfa526e",
                 "shasum": ""
             },
             "require": {
-                "php": ">=7.2 <8.1"
+                "php": ">=7.2 <8.2"
             },
             "conflict": {
                 "nette/di": "<3.0.6"
@@ -1350,9 +1354,9 @@
             ],
             "support": {
                 "issues": "https://github.com/nette/utils/issues",
-                "source": "https://github.com/nette/utils/tree/v3.2.3"
+                "source": "https://github.com/nette/utils/tree/v3.2.5"
             },
-            "time": "2021-08-16T21:05:00+00:00"
+            "time": "2021-09-20T10:50:11+00:00"
         },
         {
             "name": "opis/closure",
@@ -1588,30 +1592,30 @@
         },
         {
             "name": "psr/log",
-            "version": "1.1.4",
+            "version": "2.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-fig/log.git",
-                "reference": "d49695b909c3b7628b6289db5479a1c204601f11"
+                "reference": "ef29f6d262798707a9edd554e2b82517ef3a9376"
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             "dist": {
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-                "url": "https://api.github.com/repos/php-fig/log/zipball/d49695b909c3b7628b6289db5479a1c204601f11",
-                "reference": "d49695b909c3b7628b6289db5479a1c204601f11",
+                "url": "https://api.github.com/repos/php-fig/log/zipball/ef29f6d262798707a9edd554e2b82517ef3a9376",
+                "reference": "ef29f6d262798707a9edd554e2b82517ef3a9376",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.0"
+                "php": ">=8.0.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.1.x-dev"
+                    "dev-master": "2.0.x-dev"
                 }
             },
             "autoload": {
                 "psr-4": {
-                    "Psr\\Log\\": "Psr/Log/"
+                    "Psr\\Log\\": "src"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -1632,9 +1636,9 @@
                 "psr-3"
             ],
             "support": {
-                "source": "https://github.com/php-fig/log/tree/1.1.4"
+                "source": "https://github.com/php-fig/log/tree/2.0.0"
             },
-            "time": "2021-05-03T11:20:27+00:00"
+            "time": "2021-07-14T16:41:46+00:00"
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         {
             "name": "psr/simple-cache",
@@ -1768,24 +1772,25 @@
         },
         {
             "name": "ramsey/uuid",
-            "version": "4.2.1",
+            "version": "4.2.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/ramsey/uuid.git",
-                "reference": "fe665a03df4f056aa65af552a96e1976df8c8dae"
+                "reference": "fc9bb7fb5388691fd7373cd44dcb4d63bbcf24df"
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-                "reference": "fe665a03df4f056aa65af552a96e1976df8c8dae",
+                "url": "https://api.github.com/repos/ramsey/uuid/zipball/fc9bb7fb5388691fd7373cd44dcb4d63bbcf24df",
+                "reference": "fc9bb7fb5388691fd7373cd44dcb4d63bbcf24df",
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                 "brick/math": "^0.8 || ^0.9",
                 "ext-json": "*",
-                "php": "^7.2 || ^8",
+                "php": "^7.2 || ^8.0",
                 "ramsey/collection": "^1.0",
-                "symfony/polyfill-ctype": "^1.8"
+                "symfony/polyfill-ctype": "^1.8",
+                "symfony/polyfill-php80": "^1.14"
             },
             "replace": {
                 "rhumsaa/uuid": "self.version"
@@ -1849,7 +1854,7 @@
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             "support": {
                 "issues": "https://github.com/ramsey/uuid/issues",
-                "source": "https://github.com/ramsey/uuid/tree/4.2.1"
+                "source": "https://github.com/ramsey/uuid/tree/4.2.3"
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                 {
@@ -1861,7 +1866,7 @@
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                 }
             ],
-            "time": "2021-08-11T01:06:55+00:00"
+            "time": "2021-09-25T23:10:38+00:00"
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@@ -4531,21 +4536,21 @@
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         {
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-            "version": "v1.15.0",
+            "version": "v1.16.0",
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                 "url": "https://github.com/FakerPHP/Faker.git",
-                "reference": "89c6201c74db25fa759ff16e78a4d8f32547770e"
+                "reference": "271d384d216e5e5c468a6b28feedf95d49f83b35"
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-                "reference": "89c6201c74db25fa759ff16e78a4d8f32547770e",
+                "url": "https://api.github.com/repos/FakerPHP/Faker/zipball/271d384d216e5e5c468a6b28feedf95d49f83b35",
+                "reference": "271d384d216e5e5c468a6b28feedf95d49f83b35",
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+                "psr/container": "^1.0 || ^2.0",
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             "conflict": {
@@ -4565,7 +4570,7 @@
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             "extra": {
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-                    "dev-main": "v1.15-dev"
+                    "dev-main": "v1.16-dev"
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@@ -4590,9 +4595,9 @@
             ],
             "support": {
                 "issues": "https://github.com/FakerPHP/Faker/issues",
-                "source": "https://github.com/FakerPHP/Faker/tree/v1.15.0"
+                "source": "https://github.com/FakerPHP/Faker/tree/v1.16.0"
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-            "time": "2021-07-06T20:39:40+00:00"
+            "time": "2021-09-06T14:53:37+00:00"
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@@ -4727,16 +4732,16 @@
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-            "version": "1.4.3",
+            "version": "1.4.4",
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                 "url": "https://github.com/mockery/mockery.git",
-                "reference": "d1339f64479af1bee0e82a0413813fe5345a54ea"
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@@ -4793,9 +4798,9 @@
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-                "source": "https://github.com/mockery/mockery/tree/1.4.3"
+                "source": "https://github.com/mockery/mockery/tree/1.4.4"
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-            "time": "2021-02-24T09:51:49+00:00"
+            "time": "2021-09-13T15:28:59+00:00"
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@@ -4857,16 +4862,16 @@
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         {
             "name": "nikic/php-parser",
-            "version": "v4.12.0",
+            "version": "v4.13.0",
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                 "url": "https://github.com/nikic/PHP-Parser.git",
-                "reference": "6608f01670c3cc5079e18c1dab1104e002579143"
+                "reference": "50953a2691a922aa1769461637869a0a2faa3f53"
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-                "reference": "6608f01670c3cc5079e18c1dab1104e002579143",
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@@ -4907,28 +4912,28 @@
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-                "source": "https://github.com/nikic/PHP-Parser/tree/v4.12.0"
+                "source": "https://github.com/nikic/PHP-Parser/tree/v4.13.0"
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-            "time": "2021-07-21T10:44:31+00:00"
+            "time": "2021-09-20T12:20:58+00:00"
         },
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             "name": "orchestra/testbench",
-            "version": "v6.20.1",
+            "version": "v6.21.1",
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                 "mockery/mockery": "^1.4.2",
-                "orchestra/testbench-core": "^6.24.1",
+                "orchestra/testbench-core": "^6.25.2",
                 "php": "^7.3 || ^8.0",
                 "phpunit/phpunit": "^8.4 || ^9.3.3",
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@@ -4962,7 +4967,7 @@
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                 "issues": "https://github.com/orchestral/testbench/issues",
-                "source": "https://github.com/orchestral/testbench/tree/v6.20.1"
+                "source": "https://github.com/orchestral/testbench/tree/v6.21.1"
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@@ -4974,20 +4979,20 @@
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-            "time": "2021-08-25T05:23:48+00:00"
+            "time": "2021-09-18T09:37:03+00:00"
         },
         {
             "name": "orchestra/testbench-core",
-            "version": "v6.24.1",
+            "version": "v6.25.2",
             "source": {
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                 "url": "https://github.com/orchestral/testbench-core.git",
-                "reference": "0e77a2e62cf9be1e541cb44f65d3ac4774015c87"
+                "reference": "03d8cce6e500a9c64da4cbaa776236c91b2572a1"
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-                "reference": "0e77a2e62cf9be1e541cb44f65d3ac4774015c87",
+                "url": "https://api.github.com/repos/orchestral/testbench-core/zipball/03d8cce6e500a9c64da4cbaa776236c91b2572a1",
+                "reference": "03d8cce6e500a9c64da4cbaa776236c91b2572a1",
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             },
             "require": {
@@ -5024,7 +5029,10 @@
             "autoload": {
                 "psr-4": {
                     "Orchestra\\Testbench\\": "src/"
-                }
+                },
+                "files": [
+                    "src/helpers.php"
+                ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -5061,7 +5069,7 @@
                     "type": "liberapay"
                 }
             ],
-            "time": "2021-08-25T05:01:24+00:00"
+            "time": "2021-09-18T01:47:58+00:00"
         },
         {
             "name": "phar-io/manifest",
@@ -5285,16 +5293,16 @@
         },
         {
             "name": "phpdocumentor/type-resolver",
-            "version": "1.4.0",
+            "version": "1.5.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpDocumentor/TypeResolver.git",
-                "reference": "6a467b8989322d92aa1c8bf2bebcc6e5c2ba55c0"
+                "reference": "30f38bffc6f24293dadd1823936372dfa9e86e2f"
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-                "url": "https://api.github.com/repos/phpDocumentor/TypeResolver/zipball/6a467b8989322d92aa1c8bf2bebcc6e5c2ba55c0",
-                "reference": "6a467b8989322d92aa1c8bf2bebcc6e5c2ba55c0",
+                "url": "https://api.github.com/repos/phpDocumentor/TypeResolver/zipball/30f38bffc6f24293dadd1823936372dfa9e86e2f",
+                "reference": "30f38bffc6f24293dadd1823936372dfa9e86e2f",
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             },
             "require": {
@@ -5302,7 +5310,8 @@
                 "phpdocumentor/reflection-common": "^2.0"
             },
             "require-dev": {
-                "ext-tokenizer": "*"
+                "ext-tokenizer": "*",
+                "psalm/phar": "^4.8"
             },
             "type": "library",
             "extra": {
@@ -5328,39 +5337,39 @@
             "description": "A PSR-5 based resolver of Class names, Types and Structural Element Names",
             "support": {
                 "issues": "https://github.com/phpDocumentor/TypeResolver/issues",
-                "source": "https://github.com/phpDocumentor/TypeResolver/tree/1.4.0"
+                "source": "https://github.com/phpDocumentor/TypeResolver/tree/1.5.0"
             },
-            "time": "2020-09-17T18:55:26+00:00"
+            "time": "2021-09-17T15:28:14+00:00"
         },
         {
             "name": "phpspec/prophecy",
-            "version": "1.13.0",
+            "version": "1.14.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpspec/prophecy.git",
-                "reference": "be1996ed8adc35c3fd795488a653f4b518be70ea"
+                "reference": "d86dfc2e2a3cd366cee475e52c6bb3bbc371aa0e"
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             "dist": {
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-                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/be1996ed8adc35c3fd795488a653f4b518be70ea",
-                "reference": "be1996ed8adc35c3fd795488a653f4b518be70ea",
+                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/d86dfc2e2a3cd366cee475e52c6bb3bbc371aa0e",
+                "reference": "d86dfc2e2a3cd366cee475e52c6bb3bbc371aa0e",
                 "shasum": ""
             },
             "require": {
                 "doctrine/instantiator": "^1.2",
-                "php": "^7.2 || ~8.0, <8.1",
+                "php": "^7.2 || ~8.0, <8.2",
                 "phpdocumentor/reflection-docblock": "^5.2",
                 "sebastian/comparator": "^3.0 || ^4.0",
                 "sebastian/recursion-context": "^3.0 || ^4.0"
             },
             "require-dev": {
-                "phpspec/phpspec": "^6.0",
+                "phpspec/phpspec": "^6.0 || ^7.0",
                 "phpunit/phpunit": "^8.0 || ^9.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.11.x-dev"
+                    "dev-master": "1.x-dev"
                 }
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             "autoload": {
@@ -5395,29 +5404,29 @@
             ],
             "support": {
                 "issues": "https://github.com/phpspec/prophecy/issues",
-                "source": "https://github.com/phpspec/prophecy/tree/1.13.0"
+                "source": "https://github.com/phpspec/prophecy/tree/1.14.0"
             },
-            "time": "2021-03-17T13:42:18+00:00"
+            "time": "2021-09-10T09:02:12+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
-            "version": "9.2.6",
+            "version": "9.2.7",
             "source": {
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                 "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "f6293e1b30a2354e8428e004689671b83871edde"
+                "reference": "d4c798ed8d51506800b441f7a13ecb0f76f12218"
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+                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/d4c798ed8d51506800b441f7a13ecb0f76f12218",
+                "reference": "d4c798ed8d51506800b441f7a13ecb0f76f12218",
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             "require": {
                 "ext-dom": "*",
                 "ext-libxml": "*",
                 "ext-xmlwriter": "*",
-                "nikic/php-parser": "^4.10.2",
+                "nikic/php-parser": "^4.12.0",
                 "php": ">=7.3",
                 "phpunit/php-file-iterator": "^3.0.3",
                 "phpunit/php-text-template": "^2.0.2",
@@ -5466,7 +5475,7 @@
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                 "issues": "https://github.com/sebastianbergmann/php-code-coverage/issues",
-                "source": "https://github.com/sebastianbergmann/php-code-coverage/tree/9.2.6"
+                "source": "https://github.com/sebastianbergmann/php-code-coverage/tree/9.2.7"
             },
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                 {
@@ -5474,7 +5483,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-03-28T07:26:59+00:00"
+            "time": "2021-09-17T05:39:03+00:00"
         },
         {
             "name": "phpunit/php-file-iterator",
@@ -5719,16 +5728,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.5.9",
+            "version": "9.5.10",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "ea8c2dfb1065eb35a79b3681eee6e6fb0a6f273b"
+                "reference": "c814a05837f2edb0d1471d6e3f4ab3501ca3899a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/ea8c2dfb1065eb35a79b3681eee6e6fb0a6f273b",
-                "reference": "ea8c2dfb1065eb35a79b3681eee6e6fb0a6f273b",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/c814a05837f2edb0d1471d6e3f4ab3501ca3899a",
+                "reference": "c814a05837f2edb0d1471d6e3f4ab3501ca3899a",
                 "shasum": ""
             },
             "require": {
@@ -5744,7 +5753,7 @@
                 "phar-io/version": "^3.0.2",
                 "php": ">=7.3",
                 "phpspec/prophecy": "^1.12.1",
-                "phpunit/php-code-coverage": "^9.2.3",
+                "phpunit/php-code-coverage": "^9.2.7",
                 "phpunit/php-file-iterator": "^3.0.5",
                 "phpunit/php-invoker": "^3.1.1",
                 "phpunit/php-text-template": "^2.0.3",
@@ -5806,7 +5815,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.5.9"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.5.10"
             },
             "funding": [
                 {
@@ -5818,7 +5827,60 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-08-31T06:47:40+00:00"
+            "time": "2021-09-25T07:38:51+00:00"
+        },
+        {
+            "name": "pimple/pimple",
+            "version": "v3.4.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/silexphp/Pimple.git",
+                "reference": "86406047271859ffc13424a048541f4531f53601"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/silexphp/Pimple/zipball/86406047271859ffc13424a048541f4531f53601",
+                "reference": "86406047271859ffc13424a048541f4531f53601",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.2.5",
+                "psr/container": "^1.1"
+            },
+            "require-dev": {
+                "symfony/phpunit-bridge": "^5.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.4.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "Pimple": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                }
+            ],
+            "description": "Pimple, a simple Dependency Injection Container",
+            "homepage": "https://pimple.symfony.com",
+            "keywords": [
+                "container",
+                "dependency injection"
+            ],
+            "support": {
+                "source": "https://github.com/silexphp/Pimple/tree/v3.4.0"
+            },
+            "time": "2021-03-06T08:28:00+00:00"
         },
         {
             "name": "psr/http-factory",
@@ -6825,7 +6887,6 @@
                     "type": "github"
                 }
             ],
-            "abandoned": true,
             "time": "2020-09-28T06:45:17+00:00"
         },
         {
@@ -7001,16 +7062,16 @@
         },
         {
             "name": "spatie/laravel-ray",
-            "version": "1.25.0",
+            "version": "1.25.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/spatie/laravel-ray.git",
-                "reference": "fc36d2f77e7258c0e443e9db1923b725d3ff3c0e"
+                "reference": "9379ed902a42d8909051d9bd5ca05a7329be7b87"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/spatie/laravel-ray/zipball/fc36d2f77e7258c0e443e9db1923b725d3ff3c0e",
-                "reference": "fc36d2f77e7258c0e443e9db1923b725d3ff3c0e",
+                "url": "https://api.github.com/repos/spatie/laravel-ray/zipball/9379ed902a42d8909051d9bd5ca05a7329be7b87",
+                "reference": "9379ed902a42d8909051d9bd5ca05a7329be7b87",
                 "shasum": ""
             },
             "require": {
@@ -7023,7 +7084,7 @@
                 "spatie/backtrace": "^1.0",
                 "spatie/ray": "^1.27.1",
                 "symfony/stopwatch": "4.2|^5.1",
-                "zbateson/mail-mime-parser": "^1.3.1"
+                "zbateson/mail-mime-parser": "^1.3.1|^2.0"
             },
             "require-dev": {
                 "facade/ignition": "^2.5",
@@ -7067,7 +7128,7 @@
             ],
             "support": {
                 "issues": "https://github.com/spatie/laravel-ray/issues",
-                "source": "https://github.com/spatie/laravel-ray/tree/1.25.0"
+                "source": "https://github.com/spatie/laravel-ray/tree/1.25.2"
             },
             "funding": [
                 {
@@ -7079,24 +7140,24 @@
                     "type": "other"
                 }
             ],
-            "time": "2021-08-27T08:41:55+00:00"
+            "time": "2021-09-10T07:21:33+00:00"
         },
         {
             "name": "spatie/macroable",
-            "version": "1.0.1",
+            "version": "2.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/spatie/macroable.git",
-                "reference": "7a99549fc001c925714b329220dea680c04bfa48"
+                "reference": "ec2c320f932e730607aff8052c44183cf3ecb072"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/spatie/macroable/zipball/7a99549fc001c925714b329220dea680c04bfa48",
-                "reference": "7a99549fc001c925714b329220dea680c04bfa48",
+                "url": "https://api.github.com/repos/spatie/macroable/zipball/ec2c320f932e730607aff8052c44183cf3ecb072",
+                "reference": "ec2c320f932e730607aff8052c44183cf3ecb072",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.2|^8.0"
+                "php": "^8.0"
             },
             "require-dev": {
                 "phpunit/phpunit": "^8.0|^9.3"
@@ -7127,22 +7188,22 @@
             ],
             "support": {
                 "issues": "https://github.com/spatie/macroable/issues",
-                "source": "https://github.com/spatie/macroable/tree/1.0.1"
+                "source": "https://github.com/spatie/macroable/tree/2.0.0"
             },
-            "time": "2020-11-03T10:15:05+00:00"
+            "time": "2021-03-26T22:39:02+00:00"
         },
         {
             "name": "spatie/ray",
-            "version": "1.30.0",
+            "version": "1.30.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/spatie/ray.git",
-                "reference": "8eff2ec7f7f5a5b74519a052302fcfb274c53b97"
+                "reference": "f6344f8abf3ede60c963d9d3f7f35fb526b6138c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/spatie/ray/zipball/8eff2ec7f7f5a5b74519a052302fcfb274c53b97",
-                "reference": "8eff2ec7f7f5a5b74519a052302fcfb274c53b97",
+                "url": "https://api.github.com/repos/spatie/ray/zipball/f6344f8abf3ede60c963d9d3f7f35fb526b6138c",
+                "reference": "f6344f8abf3ede60c963d9d3f7f35fb526b6138c",
                 "shasum": ""
             },
             "require": {
@@ -7192,7 +7253,7 @@
             ],
             "support": {
                 "issues": "https://github.com/spatie/ray/issues",
-                "source": "https://github.com/spatie/ray/tree/1.30.0"
+                "source": "https://github.com/spatie/ray/tree/1.30.2"
             },
             "funding": [
                 {
@@ -7204,7 +7265,7 @@
                     "type": "other"
                 }
             ],
-            "time": "2021-08-20T09:09:05+00:00"
+            "time": "2021-09-10T07:22:57+00:00"
         },
         {
             "name": "symfony/stopwatch",
@@ -7395,27 +7456,28 @@
         },
         {
             "name": "zbateson/mail-mime-parser",
-            "version": "1.3.2",
+            "version": "2.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/zbateson/mail-mime-parser.git",
-                "reference": "8eb590750772849189c7fa30ed52bcdcd2c9d1ef"
+                "reference": "da7b5913052d7b84fe789608761c4915281d0801"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/zbateson/mail-mime-parser/zipball/8eb590750772849189c7fa30ed52bcdcd2c9d1ef",
-                "reference": "8eb590750772849189c7fa30ed52bcdcd2c9d1ef",
+                "url": "https://api.github.com/repos/zbateson/mail-mime-parser/zipball/da7b5913052d7b84fe789608761c4915281d0801",
+                "reference": "da7b5913052d7b84fe789608761c4915281d0801",
                 "shasum": ""
             },
             "require": {
                 "guzzlehttp/psr7": "^1.7.0|^2.0",
                 "php": ">=5.4",
+                "pimple/pimple": "^3.0",
                 "zbateson/mb-wrapper": "^1.0.1",
                 "zbateson/stream-decorators": "^1.0.6"
             },
             "require-dev": {
                 "mikey179/vfsstream": "^1.6.0",
-                "sanmai/phpunit-legacy-adapter": "^6.3 || ^8"
+                "sanmai/phpunit-legacy-adapter": "^6.3 || ^8.2"
             },
             "suggest": {
                 "ext-iconv": "For best support/performance",
@@ -7463,7 +7525,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-07-08T19:06:28+00:00"
+            "time": "2021-08-23T02:13:55+00:00"
         },
         {
             "name": "zbateson/mb-wrapper",
@@ -7595,15 +7657,13 @@
         }
     ],
     "aliases": [],
-    "minimum-stability": "stable",
+    "minimum-stability": "dev",
     "stability-flags": [],
     "prefer-stable": true,
     "prefer-lowest": false,
     "platform": {
         "php": "^7.4|^8.0",
-        "ext-json": "*",
-        "ext-soap": "*",
-        "ext-openssl": "*"
+        "ext-json": "*"
     },
     "platform-dev": [],
     "plugin-api-version": "2.1.0"
diff --git a/src/Drivers/Novin/Novin.php b/src/Drivers/Novin/Novin.php
index 4d3b622..d4626f9 100644
--- a/src/Drivers/Novin/Novin.php
+++ b/src/Drivers/Novin/Novin.php
@@ -14,20 +14,23 @@
 
 class Novin extends Driver
 {
-    const BANK_BUY_TRANSACTION_TYPE = 'EN_GOODS';
+    protected const BANK_BUY_TRANSACTION_TYPE = 'EN_GOODS';
 
     private ?string $sessionId = null;
 
     public function purchase(): string
     {
         $response = $this->callApi($this->getLoginUrl(), $this->getLoginData());
+
         if ($response['Result'] == $this->getSuccessResponseStatusCode()) {
             $this->sessionId = $response['SessionId'];
         } else {
             throw new PurchaseFailedException($this->getStatusMessage($response['Result']));
         }
+
         $purchaseData = $this->getPurchaseData();
         $response = $this->callApi($this->getPurchaseUrl(), $purchaseData);
+
         if ($response['Result'] == $this->getSuccessResponseStatusCode()) {
             $dataToSign = $response['DataToSign'];
             $dataUniqueId = $response['UniqueId'];
@@ -55,24 +58,29 @@ public function pay(): RedirectionForm
             'Token' => $this->getInvoice()->getToken(),
             'Language' => $this->getLanguage()
         ];
-        $payUrl .= ('?token=' . $data['Token'] . '&language=' . $data['Language']);
+        $payUrl .= ('?token='.$data['Token'].'&language='.$data['Language']);
 
         return $this->redirect($payUrl, $data);
     }
 
     public function verify(): Receipt
     {
-        if (!empty(request('State')) and strtoupper(request('State')) !== 'OK') {
+        if (!empty(request('State')) && strtoupper(request('State')) !== 'OK') {
             throw new PaymentFailedException('کاربر از انجام تراکنش منصرف شده است.');
         }
 
         $verificationData = $this->getVerificationData();
         $response = $this->callApi($this->getVerificationUrl(), $verificationData);
-        if ($response['Result'] == $this->getSuccessResponseStatusCode() and $response['Amount'] == $this->getInvoice()->getAmount()) {
+        if ($response['Result'] == $this->getSuccessResponseStatusCode() && $response['Amount'] == $this->getInvoice()->getAmount()) {
             $this->getInvoice()->setTransactionId(request('RefNum'));
             $this->getInvoice()->setInvoiceId(request('ResNum'));
 
-            return new Receipt($this->getInvoice(), request('TraceNo'), request('CustomerRefNum'), request('CardMaskPan'));
+            return new Receipt(
+                $this->getInvoice(),
+                request('TraceNo'),
+                request('CustomerRefNum'),
+                request('CardMaskPan')
+            );
         }
         throw new PaymentFailedException($this->getStatusMessage($response['Result']));
     }
@@ -90,8 +98,8 @@ private function getSignature(string $dataToSign): string
         openssl_pkcs7_sign(
             $this->getUnsignedDataFilePath(),
             $this->getSignedDataFilePath(),
-            'file://' . $this->settings['certificate_path'],
-            array('file://' . $this->settings['certificate_path'], $this->settings['certificate_password']),
+            'file://'.$this->settings['certificate_path'],
+            array('file://'.$this->settings['certificate_path'], $this->settings['certificate_password']),
             array(),
             PKCS7_NOSIGS
         );
@@ -221,17 +229,17 @@ protected function getSuccessResponseStatusCode(): string
 
     protected function getLoginUrl(): string
     {
-        return $this->getBaseRestServiceUrl() . 'merchantLogin/';
+        return $this->getBaseRestServiceUrl().'merchantLogin/';
     }
 
     protected function getPurchaseUrl(): string
     {
-        return $this->getBaseRestServiceUrl() . 'generateTransactionDataToSign/';
+        return $this->getBaseRestServiceUrl().'generateTransactionDataToSign/';
     }
 
     protected function getTokenGenerationUrl(): string
     {
-        return $this->getBaseRestServiceUrl() . 'generateSignedDataToken/';
+        return $this->getBaseRestServiceUrl().'generateSignedDataToken/';
     }
 
     protected function getPaymentUrl(): string
@@ -241,7 +249,7 @@ protected function getPaymentUrl(): string
 
     protected function getVerificationUrl(): string
     {
-        return $this->getBaseRestServiceUrl() . 'verifyMerchantTrans/';
+        return $this->getBaseRestServiceUrl().'verifyMerchantTrans/';
     }
 
     private function getBaseRestServiceUrl(): string
@@ -264,11 +272,11 @@ private function getLanguage(): string
 
     private function checkPhoneNumberFormat(string $phoneNumber): string
     {
-        if (strlen($phoneNumber) == 12 and Str::startsWith($phoneNumber, '98')) {
+        if (strlen($phoneNumber) === 12 && Str::startsWith($phoneNumber, '98')) {
             return Str::replaceFirst('98', '0', $phoneNumber);
         }
-        if (strlen($phoneNumber) == 10 and Str::startsWith($phoneNumber, '9')) {
-            return '0' . $phoneNumber;
+        if (strlen($phoneNumber) === 10 && Str::startsWith($phoneNumber, '9')) {
+            return '0'.$phoneNumber;
         }
 
         return $phoneNumber;
@@ -276,11 +284,11 @@ private function checkPhoneNumberFormat(string $phoneNumber): string
 
     private function getUnsignedDataFilePath(): string
     {
-        return $this->settings['temp_files_dir'] . 'unsigned.txt';
+        return $this->settings['temp_files_dir'].'unsigned.txt';
     }
 
     private function getSignedDataFilePath(): string
     {
-        return $this->settings['temp_files_dir'] . 'signed.txt';
+        return $this->settings['temp_files_dir'].'signed.txt';
     }
 }
diff --git a/src/Drivers/Pasargad/Helpers/RSA.php b/src/Drivers/Pasargad/Helpers/RSA.php
index 8c5c2bd..1e42a2a 100644
--- a/src/Drivers/Pasargad/Helpers/RSA.php
+++ b/src/Drivers/Pasargad/Helpers/RSA.php
@@ -8,41 +8,41 @@ class RSA
 
     public static function rsaEncrypt($message, $publicKey, $modulus, $keylength)
     {
-        $padded = RSA::addPKCS1Padding($message, true, $keylength / 8);
-        $number = RSA::binaryToNumber($padded);
-        $encrypted = RSA::powMod($number, $publicKey, $modulus);
-        $result = RSA::numberToBinary($encrypted, $keylength / 8);
-        return $result;
+        $padded = self::addPKCS1Padding($message, true, $keylength / 8);
+        $number = self::binaryToNumber($padded);
+        $encrypted = self::powMod($number, $publicKey, $modulus);
+
+        return self::numberToBinary($encrypted, $keylength / 8);
     }
 
     public static function rsaDecrypt($message, $privateKey, $modulus, $keylength)
     {
-        $number = RSA::binaryToNumber($message);
-        $decrypted = RSA::powMod($number, $privateKey, $modulus);
-        $result = RSA::numberToBinary($decrypted, $keylength / 8);
-        return RSA::removePKCS1Padding($result, $keylength / 8);
+        $number = self::binaryToNumber($message);
+        $decrypted = self::powMod($number, $privateKey, $modulus);
+        $result = self::numberToBinary($decrypted, $keylength / 8);
+        return self::removePKCS1Padding($result, $keylength / 8);
     }
 
     public static function rsaSign($message, $privateKey, $modulus, $keylength)
     {
-        $padded = RSA::addPKCS1Padding($message, false, $keylength / 8);
-        $number = RSA::binaryToNumber($padded);
-        $signed = RSA::powMod($number, $privateKey, $modulus);
-        $result = RSA::numberToBinary($signed, $keylength / 8);
-        return $result;
+        $padded = self::addPKCS1Padding($message, false, $keylength / 8);
+        $number = self::binaryToNumber($padded);
+        $signed = self::powMod($number, $privateKey, $modulus);
+
+        return self::numberToBinary($signed, $keylength / 8);
     }
 
     public static function rsaVerify($message, $publicKey, $modulus, $keylength)
     {
-        return RSA::rsaDecrypt($message, $publicKey, $modulus, $keylength);
+        return self::rsaDecrypt($message, $publicKey, $modulus, $keylength);
     }
 
     public static function rsaKypVerify($message, $publicKey, $modulus, $keylength)
     {
-        $number = RSA::binaryToNumber($message);
-        $decrypted = RSA::powMod($number, $publicKey, $modulus);
-        $result = RSA::numberToBinary($decrypted, $keylength / 8);
-        return RSA::removeKYPPadding($result, $keylength / 8);
+        $number = self::binaryToNumber($message);
+        $decrypted = self::powMod($number, $publicKey, $modulus);
+        $result = self::numberToBinary($decrypted, $keylength / 8);
+        return self::removeKYPPadding($result, $keylength / 8);
     }
 
     public static function powMod($p, $q, $r)
@@ -54,7 +54,7 @@ public static function powMod($p, $q, $r)
             $rem = bcmod($div, 2);
             $div = bcdiv($div, 2);
             if ($rem) {
-                array_push($factors, $powerOfTwo);
+                $factors[] = $powerOfTwo;
             }
             $powerOfTwo++;
         }
@@ -67,13 +67,14 @@ public static function powMod($p, $q, $r)
                 $partRes = bcmod($partRes, $r);
                 $idx++;
             }
-            array_push($partialResults, $partRes);
+            $partialResults[] = $partRes;
         }
         $result = "1";
         foreach ($partialResults as $partRes) {
             $result = bcmul($result, $partRes);
             $result = bcmod($result, $r);
         }
+
         return $result;
     }
 
diff --git a/src/Drivers/Pasargad/Helpers/RSAProcessor.php b/src/Drivers/Pasargad/Helpers/RSAProcessor.php
index 0aa42d5..bbf3018 100644
--- a/src/Drivers/Pasargad/Helpers/RSAProcessor.php
+++ b/src/Drivers/Pasargad/Helpers/RSAProcessor.php
@@ -7,10 +7,10 @@ class RSAProcessor
     public const KEY_TYPE_XML_FILE = 'xml_file';
     public const KEY_TYPE_XML_STRING = 'xml_string';
 
-    private $publicKey = null;
-    private $privateKey = null;
-    private $modulus = null;
-    private $keyLength = "1024";
+    private $publicKey;
+    private $privateKey;
+    private $modulus;
+    private $keyLength;
 
     public function __construct($key, $keyType = null)
     {
@@ -20,7 +20,7 @@ public function __construct($key, $keyType = null)
         if ($keyType == null || $keyType == self::KEY_TYPE_XML_STRING) {
             $xmlObject = simplexml_load_string($key);
         } elseif ($keyType == self::KEY_TYPE_XML_FILE) {
-            $xmlObject = simplexml_load_file($key);
+            $xmlObject = simplexml_load_string(file_get_contents($key));
         }
 
         $this->modulus = RSA::binaryToNumber(base64_decode($xmlObject->Modulus));
diff --git a/src/Drivers/Pasargad/Pasargad.php b/src/Drivers/Pasargad/Pasargad.php
index ef22576..f8e863a 100644
--- a/src/Drivers/Pasargad/Pasargad.php
+++ b/src/Drivers/Pasargad/Pasargad.php
@@ -2,18 +2,19 @@
 
 namespace Omalizadeh\MultiPayment\Drivers\Pasargad;
 
-use Illuminate\Support\Str;
 use Illuminate\Support\Facades\Http;
-use Omalizadeh\MultiPayment\RedirectionForm;
+use Illuminate\Support\Str;
 use Omalizadeh\MultiPayment\Drivers\Contracts\Driver;
 use Omalizadeh\MultiPayment\Drivers\Pasargad\Helpers\RSAProcessor;
+use Omalizadeh\MultiPayment\Exceptions\InvalidConfigurationException;
 use Omalizadeh\MultiPayment\Exceptions\PaymentFailedException;
 use Omalizadeh\MultiPayment\Exceptions\PurchaseFailedException;
 use Omalizadeh\MultiPayment\Receipt;
+use Omalizadeh\MultiPayment\RedirectionForm;
 
 class Pasargad extends Driver
 {
-    const BANK_BUY_ACTION_CODE = 1003;
+    protected const BANK_BUY_ACTION_CODE = 1003;
 
     public function purchase(): string
     {
@@ -77,15 +78,14 @@ public function verify(): Receipt
 
     private function callApi(string $url, array $data)
     {
-        $body = json_encode($data);
+        $body = json_encode($data, JSON_THROW_ON_ERROR);
         $sign = $this->signData($body);
         $headers = $this->getRequestHeaders();
         $headers = array_merge($headers, [
             'Sign' => $sign
         ]);
-        $response = Http::withHeaders($headers)->post($url, $data);
 
-        return $response;
+        return Http::withHeaders($headers)->post($url, $data);
     }
 
     private function signData(string $stringifiedData)
@@ -185,10 +185,10 @@ private function getRequestHeaders(): array
 
     private function checkPhoneNumberFormat(string $phoneNumber): string
     {
-        if (strlen($phoneNumber) == 12 and Str::startsWith($phoneNumber, '98')) {
+        if (strlen($phoneNumber) === 12 && Str::startsWith($phoneNumber, '98')) {
             return Str::replaceFirst('98', '', $phoneNumber);
         }
-        if (strlen($phoneNumber) == 11 and Str::startsWith($phoneNumber, '0')) {
+        if (strlen($phoneNumber) === 11 && Str::startsWith($phoneNumber, '0')) {
             return Str::replaceFirst('0', '', $phoneNumber);
         }
         return $phoneNumber;