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Edit File: OAuthService.php

<?php

namespace AmeliaStripe\Service;

class OAuthService extends AbstractService
{
    /**
     * Sends a request to Stripe's Connect API.
     *
     * @param 'delete'|'get'|'post' $method the HTTP method
     * @param string $path the path of the request
     * @param array $params the parameters of the request
     * @param array|\AmeliaStripe\Util\RequestOptions $opts the special modifiers of the request
     *
     * @return \AmeliaStripe\StripeObject the object returned by Stripe's Connect API
     */
    protected function requestConnect($method, $path, $params, $opts)
    {
        $opts = $this->_parseOpts($opts);
        $opts->apiBase = $this->_getBase($opts);

return $this->request($method, $path, $params, $opts);
    }

/**
     * Generates a URL to Stripe's OAuth form.
     *
     * @param null|array $params
     * @param null|array $opts
     *
     * @return string the URL to Stripe's OAuth form
     */
    public function authorizeUrl($params = null, $opts = null)
    {
        $params = $params ?: [];

$opts = $this->_parseOpts($opts);
        $base = $this->_getBase($opts);

$params['client_id'] = $this->_getClientId($params);
        if (!\array_key_exists('response_type', $params)) {
            $params['response_type'] = 'code';
        }
        $query = \AmeliaStripe\Util\Util::encodeParameters($params);

return $base . '/oauth/authorize?' . $query;
    }

/**
     * Use an authoriztion code to connect an account to your platform and
     * fetch the user's credentials.
     *
     * @param null|array $params
     * @param null|array $opts
     *
     * @return \AmeliaStripe\StripeObject object containing the response from the API
     *
     * @throws \AmeliaStripe\Exception\OAuth\OAuthErrorException if the request fails
     */
    public function token($params = null, $opts = null)
    {
        $params = $params ?: [];
        $params['client_secret'] = $this->_getClientSecret($params);

return $this->requestConnect('post', '/oauth/token', $params, $opts);
    }

/**
     * Disconnects an account from your platform.
     *
     * @param null|array $params
     * @param null|array $opts
     *
     * @return \AmeliaStripe\StripeObject object containing the response from the API
     *
     * @throws \AmeliaStripe\Exception\OAuth\OAuthErrorException if the request fails
     */
    public function deauthorize($params = null, $opts = null)
    {
        $params = $params ?: [];
        $params['client_id'] = $this->_getClientId($params);

return $this->requestConnect('post', '/oauth/deauthorize', $params, $opts);
    }

private function _getClientId($params = null)
    {
        $clientId = ($params && \array_key_exists('client_id', $params)) ? $params['client_id'] : null;

if (null === $clientId) {
            $clientId = $this->client->getClientId();
        }
        if (null === $clientId) {
            $msg = 'No client_id provided. (HINT: set your client_id using '
              . '`new \AmeliaStripe\StripeClient([clientId => <CLIENT-ID>
                ])`)".  You can find your client_ids '
              . 'in your Stripe dashboard at '
              . 'https://dashboard.stripe.com/account/applications/settings, '
              . 'after registering your account as a platform. See '
              . 'https://stripe.com/docs/connect/standard-accounts for details, '
              . 'or email support@stripe.com if you have any questions.';

throw new \AmeliaStripe\Exception\AuthenticationException($msg);
        }

return $clientId;
    }

private function _getClientSecret($params = null)
    {
        if (\array_key_exists('client_secret', $params)) {
            return $params['client_secret'];
        }

return $this->client->getApiKey();
    }

/**
     * @param array|\AmeliaStripe\Util\RequestOptions $opts the special modifiers of the request
     *
     * @return \AmeliaStripe\Util\RequestOptions
     *
     * @throws \AmeliaStripe\Exception\InvalidArgumentException
     */
    private function _parseOpts($opts)
    {
        if (\is_array($opts)) {
            if (\array_key_exists('connect_base', $opts)) {
                // Throw an exception for the convenience of anybody migrating to
                // \AmeliaStripe\Service\OAuthService from \AmeliaStripe\OAuth, where `connect_base`
                // was the name of the parameter that behaves as `api_base` does here.
                throw new \AmeliaStripe\Exception\InvalidArgumentException('Use `api_base`, not `connect_base`');
            }
        }

return \AmeliaStripe\Util\RequestOptions::parse($opts);
    }

/**
     * @param \AmeliaStripe\Util\RequestOptions $opts
     *
     * @return string
     */
    private function _getBase($opts)
    {
        return isset($opts->apiBase)
          ? $opts->apiBase
          : $this->client->getConnectBase();
    }
}

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