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<?php
namespace App\Services\Payment;
use Auth;
use PhonePe\PhonePe as PhonePeSDK;
use Exception;
class PhonePePayment implements PaymentInterface
{
private string $saltKey;
private string $merchantId;
private string $callbackUrl;
private string $transactionId;
public function __construct($merchantId, $saltKey)
{
// $this->merchantId = "PGTESTPAYUAT86";
// $this->saltKey = "96434309-7796-489d-8924-ab56988a6076";
$this->merchantId = $merchantId;
$this->saltKey = $saltKey;
$this->callbackUrl = url('/webhook/phonePe');
$this->transactionId = uniqid();
}
/**
* Create payment intent for PhonePe
*
* @param $amount
* @param $customMetaData
* @return array
* @throws Exception
*/
public function createPaymentIntent($amount, $customMetaData)
{
$amount = $this->minimumAmountValidation('INR', $amount);
$userMobile = Auth::user()->mobile;
$metaData = 't' . '-' . $customMetaData['payment_transaction_id'] . '-' . 'p' . '-' . $customMetaData['package_id'];
if ($customMetaData['platform_type'] == 'web') {
$redirectUrl = route('phonepe.success.web');
$transactionId = uniqid();
$phonepe = PhonePeSDK::init(
$this->merchantId,
$metaData,
$this-> ,
"1",
$redirectUrl,
$this->callbackUrl,
"DEV"
);
$amountInPaisa = $amount * 100;
$redirectURL = $phonepe->standardCheckout()->createTransaction($amountInPaisa, $userMobile, $metaData)->getTransactionURL();
if (!empty($redirectURL)) {
return $this->formatPaymentIntent($transactionId, $amount, 'INR', 'pending', $customMetaData, $redirectURL);
}
} else {
$redirectUrl = route('phonepe.success');
$payload = [
"merchantId" => $this->merchantId,
"merchantTransactionId" => $metaData,
"merchantUserId" => $this->merchantId,
"amount" => $amount * 100,
"callbackUrl" => $this->callbackUrl,
"redirectMode" => "REDIRECT",
"mobileNumber" => $userMobile,
"paymentInstrument" => [
"type" => "PAY_PAGE"
]
];
$encodedPayload = base64_encode(json_encode($payload, JSON_UNESCAPED_SLASHES));
$stringToHash = $encodedPayload . '/pg/v1/pay' . $this->saltKey;
$hash = hash('sha256', $stringToHash);
$checksum = $hash . '###' . 1;
return [
"payload" => $payload,
"checksum" => $checksum,
"Phonepe_environment_mode" => 'SANDBOX',
"merchent_id" => $this->merchantId,
"appId" => 'Appid',
"callback_url" => $this->callbackUrl
];
}
// throw new Exception("Error initiating payment: " . $redirectURL);
}
/**
* Create and format payment intent for PhonePe
*
* @param $amount
* @param $customMetaData
* @return array
* @throws Exception
*/
public function createAndFormatPaymentIntent($amount, $customMetaData): array
{
$paymentIntent = $this->createPaymentIntent($amount, $customMetaData);
$metaData = 't' .'-'. $customMetaData['payment_transaction_id'] .'-'. 'p' .'-'. $customMetaData['package_id'];
return $this->formatPaymentIntent(
id: $metaData,
amount: $amount,
currency: 'INR',
status: "PENDING",
metadata: $customMetaData,
paymentIntent: $paymentIntent
);
}
/**
* Retrieve payment intent (check payment status)
*
* @param $transactionId
* @return array
* @throws Exception
*/
public function retrievePaymentIntent($transactionId): array
{
$statusUrl = 'https://api.phonepe.com/v3/transaction/' . $transactionId . '/status';
$signature = $this->generateSignature(''); // Adjust if needed based on PhonePe requirements
$response = $this->sendRequest($statusUrl, '', $signature);
if ($response['success']) {
return $this->formatPaymentIntent($transactionId, $response['amount'], 'INR', $response['status'], [], $response);
}
throw new Exception("Error fetching payment status: " . $response['message']);
}
/**
* Format payment intent response
*
* @param $id
* @param $amount
* @param $currency
* @param $status
* @param $metadata
* @param $paymentIntent
* @return array
*/
public function formatPaymentIntent($id, $amount, $currency, $status, $metadata, $paymentIntent): array
{
return [
'id' => $id,
'amount' => $amount,
'currency' => $currency,
'metadata' => $metadata,
'status' => match ($status) {
"SUCCESS" => "succeeded",
"PENDING" => "pending",
"FAILED" => "failed",
default => "unknown"
},
'payment_gateway_response' => $paymentIntent
];
}
/**
* Minimum amount validation
*
* @param $currency
* @param $amount
* @return float|int
*/
public function minimumAmountValidation($currency, $amount)
{
$minimumAmount = match ($currency) {
'INR' => 1.00, // 1 Rupee
default => 0.50
};
return ($amount >= $minimumAmount) ? $amount : $minimumAmount;
}
/**
* Generate HMAC signature for PhonePe
*
* @param $encodedRequestBody
* @return string
*/
private function generateSignature($requestBody): string
{
// Concatenate raw JSON payload, endpoint, and salt key
$stringToHash = $requestBody . '/pg/v1/pay' . $this->saltKey;
// Hash the string using SHA256
$hash = hash('sha256', $stringToHash);
// Append salt index (Assumed to be 1 in this example)
return $hash . '###' . 1;
}
/**
* Send cURL request to PhonePe API
*
* @param $url
* @param $requestBody
* @param $signature
* @return array
*/
// private function sendRequest($url, $requestBody, $signature): array
// {
// // dd($requestBody);
// $ch = curl_init($url);
// curl_setopt($ch, CURLOPT_POST, 1);
// curl_setopt($ch, CURLOPT_POSTFIELDS, $requestBody);
// curl_setopt($ch, CURLOPT_HTTPHEADER, [
// 'Content-Type: application/json',
// 'X-VERIFY: ' . $signature,
// ]);
// curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// $response = curl_exec($ch);
// curl_close($ch);
// return json_decode($response, true);
// }
}