# Authorization service for the SumUp Ecommerce SDK for PHP

## \SumUp\Services\Authorization

The `\SumUp\Services\Authorization` service is responsible for getting a valid access token.

```php
$authService = new \SumUp\Services\Authorization(
    \SumUp\HttpClients\SumUpHttpClientInterface $client,
    \SumUp\Application\ApplicationConfiguration $configuration
);
```

## Instance Methods

### getToken()

```php
public function getToken(): \SumUp\Authentication\AccessToken
```

Returns a `\SumUp\Authentication\AccessToken` according to the initial configuration or throws an exception.

### getTokenByCode()

```php
public function getTokenByCode(): \SumUp\Authentication\AccessToken
```

Returns a `\SumUp\Authentication\AccessToken` according to the initial configuration or throws an exception.

### getTokenByClientCredentials()

```php
public function getTokenByClientCredentials(): \SumUp\Authentication\AccessToken
```

Returns a `\SumUp\Authentication\AccessToken` according to the initial configuration or throws an exception.

### getTokenByPassword()

```php
public function getTokenByPassword(): \SumUp\Authentication\AccessToken
```

Returns a `\SumUp\Authentication\AccessToken` according to the initial configuration or throws an exception.

### refreshToken()

```php
public function refreshToken($refreshToken): \SumUp\Authentication\AccessToken

```

Returns a `\SumUp\Authentication\AccessToken` using the provided the refresh token or throws an exception.