Laralabs/here-api-oauth2-client

<?php

namespace Laralabs\HereOAuth\Factories;

use GuzzleHttp\Client;
use GuzzleHttp\Exception\ClientException;
use GuzzleHttp\Exception\ServerException;
use Illuminate\Support\Facades\Log;
use Laralabs\HereOAuth\Exceptions\ErrorRetrievingHereApiToken;

class HereOAuthToken
{
    protected OAuthHeader $header;

    protected string $tokenUrl;

    protected Client $client;

    protected int $attempts = 0;

    protected int $maxAttempts = 4;

    public function __construct(OAuthHeader $header, string $tokenUrl)
    {
        $this->header = $header;
        $this->tokenUrl = $tokenUrl;
        $this->client = new Client();
    }

    public function generate(): ?array
    {
        return $this->getAccessToken();
    }

    private function getAccessToken(): ?array
    {
        try {
            $this->attempts += 1;
            $response = $this->client->request('POST', $this->tokenUrl, [
                'form_params' => [
                    'grant_type' => 'client_credentials',
                ],
                'headers' => [
                    'Authorization' => $this->header->build(),
                ],
            ]);

            return json_decode($response->getBody()->getContents(), true);
        } catch (ClientException $exception) {
            Log::error('Error generating HERE API OAuth token: ' . $exception->getMessage());
            return null;
        } catch (ServerException $exception) {
            Log::error('Error generating HERE API OAuth token: ' . $exception->getMessage());

            if ($this->attempts <= $this->maxAttempts) {
                return $this->getAccessToken();
            }

            throw new ErrorRetrievingHereApiToken;
        }
    }
}