return [
    /**
     * Can only be 'TEST' Or 'Production'. If empty or invalid, 'TEST' will be used.
     */
    'mode' => env('MERCANET_MODE', 'TEST'),

    // Credentials of testing environment
    'test' => [
        'merchant_id' => env('MERCANET_TEST_MERCHANT_ID', ''), // Required
        'key_version' => env('MERCANET_TEST_KEY_VERSION', '1'),
        'secret_key' => env('MERCANET_TEST_SECRET_KEY', ''), // Required
    ],

    // Credentials of production environment
    'production' => [
        'merchant_id' => env('MERCANET_PRODUCTION_MERCHANT_ID', ''), // Required
        'key_version' => env('MERCANET_PRODUCTION_KEY_VERSION', '1'), // Required
        'secret_key' => env('MERCANET_PRODUCTION_SECRET_KEY', ''), // Required
    ],

    'currency' => env('MERCANET_CURRENCY', 'EUR'),

    // Should be replaced with a url of your callback post route,
    // which will be invoked by mercanet service after processing of any payment.
    'normal_return_url' => env('MERCANET_NORMAL_RETURN_URL', 'https://example.com/payments/callback'),

    /**
    * You can set the default locale that you need to be used to translate the mercanet payment page
     * Allowed languages 'nl', 'fr', 'de', 'it', 'es', 'cy', 'en'
     */
    'language' => env('MERCANET_LOCALE', 'en'),
];

// Import the class namespaces first, before using it directly
use Mouadziani\Mercanet\Mercanet;

// You can either create new instance from Mercanet
$mercanet = new Mercanet();

// Or through static constructor boot.
$mercanet = Mercanet::boot();

$mercanet->newPaymentRequest();

// Required
$mercanet->setTransactionReference('123456789'); 

// By default the currency used is EUR. If you wish to change it,
// you may call setCurrency method to set a different currency before calling pay() method
$mercanet->setCurrency('EUR');

// Optionally, You can also call setLanguage method to change the default locale of payment page
$mercanet->setLanguage('fr');

// Required and it should be integer
$mercanet->setAmount(19000);

// Optional
$mercanet->setBillingContactFirstname('John');

 // Optional
$mercanet->setBillingContactLastname('Doe');

 // Optional
$mercanet->setCustomerContactEmail('[email protected]');

// Then you can call pay() method to redirect user to the payment page of mercanet website.
$mercanet->pay();

use Mouadziani\Mercanet\Mercanet;

Mercanet::boot()
    ->newPaymentRequest()
    ->setTransactionReference('123456789')
    ->setCurrency('EUR')
    ->setLanguage('fr')
    ->setAmount(19000.50)
    ->setBillingContactFirstname('John')
    ->setBillingContactLastname('Doe')
    ->setCustomerContactEmail('[email protected]')
    ->pay();

use Mouadziani\Mercanet\Mercanet;

// Create new instance or call the static constructor from Mercanet class 
// and then call fromRequest() method and pass request parameters into it. 
$paymentResponse = Mercanet::boot()->fromResponse(request()->all());

// Then you can check if the given payment response is successfully passed by calling isSuccessfullyPassed() method
if($paymentResponse->isSuccessfullyPassed()) {
    // The payment is accepted.
    
    // You can get the transaction reference from the initialized payment request object
    $transactionReference = $paymentResponse->getTransactionReference();
    
    // Then you can do what you want, eg. change the status of the order related to the transaction reference, or mark it as paid...
    App\Order::query()
        ->where('transaction_reference', $transactionReference)
        ->update([
            'is_paid' => true
        ]);
} else {
    // The payment is failed 
}