PayPal Integration

namespace App\Services\Payment;

use Omnipay\Omnipay;

class PayPalGateway implements PaymentGatewayInterface
{
    private $gateway;
    
    public function __construct()
    {
        $this->gateway = Omnipay::create('PayPal_Rest');
        $this->gateway->setClientId(env('PAYPAL_CLIENT_ID'));
        $this->gateway->setSecret(env('PAYPAL_CLIENT_SECRET'));
        $this->gateway->setTestMode(env('PAYPAL_SANDBOX', true));
    }
    
    public function pay(array $paymentData)
    {
        $response = $this->gateway->purchase([
            'amount'        => $paymentData['amount'],
            'currency'      => $paymentData['currency'] ?? 'USD',
            'returnUrl'     => route('payment.callback', ['gateway' => 'paypal']),
            'cancelUrl'     => route('payment.cancel'),
        ])->send();
        
        if ($response->isRedirect()) {
            return redirect()->away($response->getRedirectUrl());
        }
        
        throw new \Exception('PayPal Payment Failed: ' . $response->getMessage());
    }
}

public function handleCallback()
{
    $response = $this->gateway->completePurchase([
        'payerId'              => request()->input('PayerID'),
        'transactionReference' => request()->input('paymentId'),
    ])->send();
    
    if ($response->isSuccessful()) {
        return [
            'success'       => true,
            'message'       => 'Payment successful.',
            'transactionId' => $response->getTransactionReference(),
            'amount'        => $response->getData()['transactions'][0]['amount']['total'],
        ];
    }
    
    return ['success' => false, 'message' => 'Payment verification failed.'];
}

PAYPAL_SANDBOX=true
PAYPAL_CLIENT_ID="sandbox_client_id"
PAYPAL_CLIENT_SECRET="sandbox_secret"

PAYPAL_SANDBOX=false
PAYPAL_CLIENT_ID="live_client_id"
PAYPAL_CLIENT_SECRET="live_secret"

INSERT INTO payment_histories (
    user_id,
    subscription_id,
    package_id,
    invoice,
    amount,
    payment_gateway,
    payment_status,
    transaction_id,
    created_at
) VALUES (
    1,
    123,
    5,
    'INV-2024-001',
    49.99,
    'PayPal',
    'paid',
    'PAYID-M5ABCDE-12345678',
    NOW()
);

$response = $this->gateway->purchase([
    'amount' => $amount,
    'currency' => 'USD',
    'returnUrl' => route('paypal.success'),
    'cancelUrl' => route('paypal.cancel'),
    'brandName' => 'TelemanAI',
    'noShipping' => 1, // Digital goods
])->send();

// Create billing plan
$plan = $paypal->createPlan([
    'name' => 'Monthly Subscription',
    'description' => 'TelemanAI Monthly Plan',
    'type' => 'INFINITE',
    'amount' => 49.99,
    'currency' => 'USD',
    'interval' => 'Month',
    'intervalCount' => 1,
]);

// Subscribe customer
$subscription = $paypal->createSubscription([
    'plan_id' => $plan->id,
    'return_url' => route('subscription.success'),
    'cancel_url' => route('subscription.cancel'),
]);

$refund = $this->gateway->refund([
    'transactionReference' => $transaction_id,
    'amount' => 49.99,
    'currency' => 'USD',
])->send();

if ($refund->isSuccessful()) {
    // Refund processed
}