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Failing with slack v2

While trying to incorporate this library into symfony, I have gone into several issues.

First of all I had to use user_scope instead of scope query parameter (identity.basic).

Secondly I had to implement my own version of SlackProvider as follows, cause it failed on missing "access_token" key.

Sharing my implement:


class SlackProvider extends AbstractProvider
{
    public function getBaseAuthorizationUrl()
    {
        return 'https://slack.com/oauth/v2/authorize';
    }

    public function getBaseAccessTokenUrl(array $params)
    {
        return 'https://slack.com/api/oauth.v2.access';
    }

    public function getResourceOwnerDetailsUrl(AccessToken $token)
    {
         return 'https://slack.com/api/users.identity';
    }

    protected function getDefaultScopes()
    {
        return [];
    }

    protected function checkResponse(ResponseInterface $response, $data)
    {
        if (isset($data['ok']) && $data['ok'] === false) {
            throw new IdentityProviderException($data['error'], null, $data);
        }
    }

    protected function createResourceOwner(array $response, AccessToken $token)
    {
        if (!isset($response['user']['id'])) {
            throw new IdentityProviderException('Missing user id', null, $response);
        }

        return new SlackResourceOwner($response);
    }


    protected function prepareAccessTokenResponse(array $result)
    {
        $result = parent::prepareAccessTokenResponse($result);

        return [
            'access_token' => $result['authed_user']['access_token'],
            'resource_owner_id' => $result['authed_user']['id']
        ];
    }

    protected function getAuthorizationHeaders($token = null)
    {
        return ['Authorization' => 'Bearer ' . $token];
    }
}

Does this library support only one flow? I was trying to login with slack in this case.

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