Razorpay Integration

namespace App\Services\Payment;

use Razorpay\Api\Api;

class RazorpayGateway implements PaymentGatewayInterface
{
    private function getApiInstance()
    {
        return new Api(env('RAZORPAY_KEY'), env('RAZORPAY_SECRET'));
    }
    
    public function pay(array $paymentData)
    {
        $api = $this->getApiInstance();
        
        // Create order
        $order = $api->order->create([
            'receipt'   => uniqid(),
            'amount'    => $paymentData['amount'] * 100, // Convert to paisa
            'currency'  => $paymentData['currency'] ?? 'INR',
            'payment_capture' => 1, // Auto-capture
        ]);
        
        return [
            'success'    => true,
            'order_id'   => $order['id'],
            'amount'     => $paymentData['amount'],
            'currency'   => $paymentData['currency'] ?? 'INR',
            'key_id'     => env('RAZORPAY_KEY'),
            'callback_url' => route('payment.callback', ['gateway' => 'razorpay']),
        ];
    }
}

public function handleCallback()
{
    $api = $this->getApiInstance();
    
    // Get callback data
    $paymentId = request()->input('razorpay_payment_id');
    $orderId = request()->input('razorpay_order_id');
    $signature = request()->input('razorpay_signature');
    
    // Verify signature
    $generatedSignature = hash_hmac(
        'sha256',
        $orderId . "|" . $paymentId,
        env('RAZORPAY_SECRET')
    );
    
    if ($generatedSignature !== $signature) {
        return ['success' => false, 'message' => 'Signature verification failed.'];
    }
    
    // Fetch payment details
    $payment = $api->payment->fetch($paymentId);
    
    if ($payment['status'] === 'captured') {
        return [
            'success'       => true,
            'message'       => 'Payment successful.',
            'transactionId' => $paymentId,
            'amount'        => $payment['amount'] / 100,
        ];
    }
    
    return ['success' => false, 'message' => 'Payment verification failed.'];
}

# Default currency
RAZORPAY_CURRENCY="INR"

// Convert rupees to paisa
$amountInPaisa = $amountInRupees * 100;

// Example: ₹49.99 = 4999 paisa
$order = $api->order->create([
    'amount' => 4999, // ₹49.99
    'currency' => 'INR',
]);

// Convert paisa back to rupees
$amountInRupees = $payment['amount'] / 100;

RAZORPAY_KEY="rzp_test_..."
RAZORPAY_SECRET="test_secret"

RAZORPAY_KEY="rzp_live_..."
RAZORPAY_SECRET="live_secret"

$signature = hash_hmac(
    'sha256',
    $orderId . '|' . $paymentId,
    env('RAZORPAY_SECRET')
);

if ($signature !== $razorpay_signature) {
    throw new Exception('Invalid signature');
}

$webhookSecret = env('RAZORPAY_WEBHOOK_SECRET');
$webhookSignature = request()->header('X-Razorpay-Signature');
$webhookBody = request()->getContent();

$expectedSignature = hash_hmac('sha256', $webhookBody, $webhookSecret);

if ($webhookSignature !== $expectedSignature) {
    throw new Exception('Invalid webhook signature');
}

// Create subscription plan
$plan = $api->plan->create([
    'period' => 'monthly',
    'interval' => 1,
    'item' => [
        'name' => 'Monthly Plan',
        'amount' => 99900, // ₹999
        'currency' => 'INR',
    ]
]);

// Create subscription
$subscription = $api->subscription->create([
    'plan_id' => $plan->id,
    'customer_notify' => 1,
    'total_count' => 12, // 12 months
]);

$link = $api->paymentLink->create([
    'amount' => 50000, // ₹500
    'currency' => 'INR',
    'description' => 'Subscription Payment',
    'customer' => [
        'name' => 'John Doe',
        'email' => '[email protected]',
        'contact' => '+919876543210',
    ],
]);

echo $link->short_url; // Share this link

// Full refund
$refund = $api->payment->fetch($paymentId)->refund();

// Partial refund
$refund = $api->payment->fetch($paymentId)->refund([
    'amount' => 25000, // ₹250
]);