### Create Payment Request

Source: https://github.com/dicrtarasov/yii2-payparts/blob/master/README.md

Create a payment request to initiate a 'Payment in installments' transaction. This involves specifying order details, product information, and the desired number of installments. The response contains a token and a redirect URL for customer checkout.

```php
/** @var PayPartsModule $module получаем модуль оплат */
$module = Yii::$app->getModule('payparts');

// запрос на создание платежа
$request = $module->paymentRequest([
    'orderId' => $orderId,                        // номер заказа в интернет-магазине
    'merchantType' => PayParts::MERCHANT_TYPE_PP, // сервис "оплата частями"
    'partsCount' => 2,                            // кол-во частей
    'products' => [
        ['name' => 'Рулон бумаги', 'price' => 0.01, 'count' => 2],
        ['name' => 'Автомобиль', 'price' => 123, 'count' => 1],
        ['name' => 'Талоны на Интернет', 'price' => 123.123, 'count' => 3]
    ]
]);

// отправляем запрос и получаем токен
$response = $request->send();

echo 'Token: ' . $response->token . "\n";
echo 'Redirect URL: ' . $response->paymentUrl . "\n";

// переадресация покупателя на страницу оплаты
$response->redirectCheckout();
```

--------------------------------

### Get Payment State

Source: https://github.com/dicrtarasov/yii2-payparts/blob/master/README.md

If a callback handler is not configured, you can retrieve the payment status by sending a state request. This is useful for verifying the transaction status after a payment attempt.

```php
// запрос состояния платежа
$request = $module->createStateRequest([
   'orderId' => $orderId     // номер заказа 
]);

// проверяем состояние платежа
$response = $request->send();
echo 'PaymentState: ' . $response->paymentState . "\n";
```

--------------------------------

### Configure Payparts Module

Source: https://github.com/dicrtarasov/yii2-payparts/blob/master/README.md

Configure the Payparts module in your Yii2 application's config. Essential settings include storeId and password. An optional callback handler can be specified to process payment status changes.

```php
[
    'modules' => [
        'payparts' => [
            'class' => dicr\payparts\PayPartsModule::class,
            'storeId' => '* мой storeId *',
            'password' => '* мой password *',
            // обработчик состояний платежей (опционально)
            'callbackHandler' => static function(dicr\payparts\PayPartsResponse $response) {
                Order::setPayed($response->orderId);
            }
        ]
    ]
];
```

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