A basic Intercom API wrapper

IntercomClientService.php

<?php
/**
 * Basic Intercom API wrapper, in case you don't want to use the official,
 * or you don't meet the requirements (ex. your PHP is < 5.6)
 * 
 * Official:
 * https://packagist.org/packages/intercom/intercom-php
 */

/*
 * Installation (Symfony):
 * =======================
 * # services.yml
 * services:
 *     # ...
 *     acme.intercom_client:
 *         class: Acme\AcmeBundle\Service\IntercomClientService
 *         calls: [ [setDependencies, [%intercom_api.url%, %intercom_api.app_id%, %intercom_api.key%]] ]
 * 
 * # parameters.yml
 * parameters:
 *     # ...
 *     intercom_api.url: "https://api.intercom.io"
 *     intercom_api.app_id: "XXX"
 *     intercom_api.key: "XXX"
 * 
 * Usage (Symfony):
 * ================
 * $intercomClient = $this->get("acme.intercom_client");
 * $intercomClient->getUsers($data);
 * $intercomClient->upsertUser($data);
 * $intercomClient->deleteUser($data);
 */

namespace Acme\AcmeBundle\Service;

use Symfony\Component\HttpFoundation\Response;

class IntercomClientService
{
    private $apiUrl;
    private $credentials;

    public function setDependencies($apiUrl, $appId, $apiKey)
    {
        $this->apiUrl = $apiUrl;
        $this->credentials = \sprintf("%s:%s", $appId, $apiKey);
    }

    private function get($type, $data = array())
    {
        $url = $this->apiUrl . "/" . $type . "?" . \http_build_query($data);

        $curlClient = \curl_init();
        \curl_setopt_array($curlClient, array(
            CURLOPT_URL => $url,
            CURLOPT_HTTPHEADER => array(
                "Accept: application/json"
            ),
            CURLOPT_HTTPAUTH => CURLAUTH_BASIC,
            CURLOPT_USERPWD => $this->credentials,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_FOLLOWLOCATION => true,
            CURLOPT_CONNECTTIMEOUT => 10,
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false
        ));
        $responseJson = \curl_exec($curlClient);
        $responseCode = \curl_getinfo($curlClient, CURLINFO_HTTP_CODE);
        \curl_close($curlClient);

        $response = \json_decode($responseJson, true);

        // throw an exception if response is not ok, or response is null / not JSON
        if (
            Response::HTTP_OK !== $responseCode
            || !$response
        ) {
            $this->throwApiException($response);
        }

        return $response;
    }

    private function post($type, $data)
    {
        $apiUrl = $this->apiUrl . "/" . $type;
        
        $dataJson = \json_encode($data);

        $curlClient = \curl_init();
        \curl_setopt_array($curlClient, array(
            CURLOPT_URL => $apiUrl,
            CURLOPT_POST => true,
            CURLOPT_POSTFIELDS => $dataJson,
            CURLOPT_HTTPHEADER => array(
                "Accept: application/json",
                "Content-Type: application/json",
                "Content-Length: " . \strlen($dataJson)
            ),
            CURLOPT_HTTPAUTH => CURLAUTH_BASIC,
            CURLOPT_USERPWD => $this->credentials,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_FOLLOWLOCATION => true,
            CURLOPT_CONNECTTIMEOUT => 10,
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false
        ));
        $responseJson = \curl_exec($curlClient);
        $responseCode = \curl_getinfo($curlClient, CURLINFO_HTTP_CODE);
        \curl_close($curlClient);

        $response = \json_decode($responseJson, true);

        // throw an exception if response is not ok or created or response is null / not JSON
        if (
            !\in_array($responseCode, array(Response::HTTP_OK, Response::HTTP_CREATED))
            || !$response
        ) {
            $this->throwApiException($response);
        }

        return $response;
    }

    private function delete($type, $data = array())
    {
        $url = $this->apiUrl . "/" . $type . "?" . \http_build_query($data);

        $curlClient = \curl_init();
        \curl_setopt_array($curlClient, array(
            CURLOPT_URL => $url,
            CURLOPT_CUSTOMREQUEST => "DELETE",
            CURLOPT_HTTPHEADER => array(
                "Accept: application/json"
            ),
            CURLOPT_HTTPAUTH => CURLAUTH_BASIC,
            CURLOPT_USERPWD => $this->credentials,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_FOLLOWLOCATION => true,
            CURLOPT_CONNECTTIMEOUT => 10,
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false
        ));
        $responseJson = \curl_exec($curlClient);
        $responseCode = \curl_getinfo($curlClient, CURLINFO_HTTP_CODE);
        \curl_close($curlClient);

        $response = \json_decode($responseJson, true);

        // throw an exception if response is not ok, or response is null / not JSON
        if (
            Response::HTTP_OK !== $responseCode
            || !$response
        ) {
            $this->throwApiException($response);
        }

        return $response;
    }

    public function getUsers($data)
    {
        return $this->get("users", $data);
    }

    public function upsertUser($data)
    {
        return $this->post("users", $data);
    }

    public function deleteUser($data)
    {
        return $this->delete("users", $data);
    }

    private function throwApiException($response)
    {
        $errors = array();

        if (
            isset($response["type"])
            && "error.list" === $response["type"]
            && isset($response["errors"])
        ) {
            foreach ($response["errors"] as $error) {
                $errors[] = $error["message"];
            }
        } else {
            $errors[] = "Unknown error";
        }

        throw new \Exception(\implode(". ", $errors));
    }
}