PayPalService.php

<?php
  
namespace FerminNamespace\Traits;


use Symfony\Component\HttpClient\HttpClient;
use FerminNamespace\Traits\CustomPayPalHttpClient;

class PayPalService 
{
    use CustomPayPalHttpClient;

    // Example method to show client usage
    public function processPayment()
    {
        // Scenario 1: Using default client creation
        $this->setClient();
        // Now $this->client is created with default custom configuration

        // Scenario 2: Passing a custom HttpClient
        $customHttpClient = HttpClient::create([
            'base_uri' => 'https://custom-specific-endpoint.com',
            'headers' => [
                'X-Custom-Header' => 'Custom Value'
            ]
        ]);
        $this->setClient($customHttpClient);
        // Now $this->client is set to the custom HttpClient

        // Example of using the client (hypothetical)
        $response = $this->client->request('GET', '/some-paypal-endpoint');

        return $response;
    }

    // Demonstration method showing different client setups
    public function demonstrateClientSetup()
    {
        // Create service instance
        $paypalService = new self();

        // Scenario 1: Default client creation
        $paypalService->setClient();

        // Scenario 2: Custom client creation
        $customClient = HttpClient::create([
            'timeout' => 15,
            'base_uri' => 'https://alternative-paypal-endpoint.com'
        ]);
        $paypalService->setClient($customClient);

        return $paypalService;
    }
}

// Example usage
$service = new PayPalService();
$service->setClient(); // Uses default configuration

```

Key points in this example:

1. The `PayPalService` class uses the `CustomPayPalHttpClient` trait
2. `setClient()` method can be called in two ways:
   - Without arguments: Creates a default client
   - With a custom `HttpClient`: Uses the provided client
3. The method returns `$this`, allowing method chaining
4. Demonstrates different scenarios of client setup

You can use it like this:

```php
// Create a service and set a default client
$paypalService = new PayPalService();
$paypalService->setClient();

// Or create with a custom client
$customClient = HttpClient::create([...]);
$paypalService->setClient($customClient);
```