iPaymer Guzzle Client example

iPaymer.php

<?php

namespace App\Services;

use GuzzleHttp\Client;
use GuzzleHttp\Exception\RequestException;

class iPaymer
{
    private $endpoint = 'http://127.0.0.1:8080/api/v{version}/';
    private $secret;
    private $client;

    private function __construct($secret, $v)
    {
        $this->secret = $secret;
        $this->endpoint = str_replace('{version}', $v, $this->endpoint);
        $this->client = new Client(); // Guzzle HTTP client instance
    }

    public static function make($secret, $v = '1')
    {
        return new iPaymer($secret, $v);
    }

    private function headers()
    {
        return [
            'X-iPaymer-Secret' => $this->secret,
            'Accept' => 'application/json',
        ];
    }

    public function sendGetRequest($endpoint, $parameters = [])
    {
        $url = $this->endpoint . ltrim($endpoint, '/');

        try {
            $response = $this->client->get($url, [
                'headers' => $this->headers(),
                'query' => $parameters,
            ]);
            return $this->constructResponse($url, $response);
        } catch (RequestException $e) {
            return $this->handleException($e, $url);
        }
    }

    public function sendPutRequest($endpoint, $parameters)
    {
        return $this->sendPostRequest($endpoint, array_merge($parameters, [
            '_method' => 'PUT',
        ]));
    }

    public function sendDeleteRequest($endpoint, $parameters)
    {
        return $this->sendPostRequest($endpoint, array_merge($parameters, [
            '_method' => 'DELETE',
        ]));
    }

    public function sendPostRequest($endpoint, $parameters = [])
    {
        $url = $this->endpoint . ltrim($endpoint, '/');

        try {
            $response = $this->client->post($url, [
                'headers' => $this->headers(),
                'form_params' => $parameters,
            ]);
            return $this->constructResponse($url, $response);
        } catch (RequestException $e) {
            return $this->handleException($e, $url);
        }
    }

    private function constructResponse($url, $response)
    {
        $body = json_decode($response->getBody(), true);
        return [
            'endpoint' => $url,
            'response' => $response->getBody(),
            'body' => $body ?: new \stdClass(),
            'code' => $response->getStatusCode(),
            'error' => null,
        ];
    }

    private function handleException(RequestException $e, $url)
    {
        $errorMessage = $e->getMessage();
        $response = $e->getResponse();

        return [
            'endpoint' => $url,
            'response' => $errorMessage,
            'body' => new \stdClass(),
            'code' => $response ? $response->getStatusCode() : 500,
            'error' => $errorMessage,
        ];
    }
}