Connection.php

<?php

namespace App\Domains\Asaas;

use GuzzleHttp\Client;
use GuzzleHttp\RequestOptions;

class Connection
{
    private $base_url;
    private $api;
    private $api_key;
    private $mode;

    public function __construct()
    {
        $this->api_key = env('ASAAS_API_KEY');
        $this->mode = env('ASAAS_MODE');

        $this->api = new Client([
            'headers' => [
                'Content-Type' => 'application/json',
                'access_token' => $this->api_key
            ]
        ]);

        if ($this->mode === 'sandbox') {
            $this->base_url = 'https://sandbox.asaas.com/api/v3/';
        }

        if ($this->mode === 'production') {
            $this->base_url = 'https://www.asaas.com/api/v3/';
        }
    }

    public function get($url)
    {
        $response = $this->api->get($this->base_url . $url);
        return $response->getBody()->getContents();
    }

    public function post($url, $params, $json)
    {
        if ($json === true) {
            $response = $this->api->post($this->base_url . $url, [
                \GuzzleHttp\RequestOptions::JSON => $params
            ]);
        } else {
            $response = $this->api->post($this->base_url . $url, $params);
        }

        return [
            'code'     => $response->getStatusCode(),
            'response' => json_decode($response->getBody()->getContents())
        ];
    }
}