1<?php
2
3namespace OAuth\OAuth2\Service;
4
5use OAuth\OAuth2\Token\StdOAuth2Token;
6use OAuth\Common\Http\Exception\TokenResponseException;
7use OAuth\Common\Http\Uri\Uri;
8use OAuth\Common\Consumer\CredentialsInterface;
9use OAuth\Common\Http\Client\ClientInterface;
10use OAuth\Common\Storage\TokenStorageInterface;
11use OAuth\Common\Http\Uri\UriInterface;
12
13class Bitly extends AbstractService
14{
15    public function __construct(
16        CredentialsInterface $credentials,
17        ClientInterface $httpClient,
18        TokenStorageInterface $storage,
19        $scopes = array(),
20        UriInterface $baseApiUri = null
21    ) {
22        parent::__construct($credentials, $httpClient, $storage, $scopes, $baseApiUri);
23
24        if (null === $baseApiUri) {
25            $this->baseApiUri = new Uri('https://api-ssl.bitly.com/v3/');
26        }
27    }
28
29    /**
30     * {@inheritdoc}
31     */
32    public function getAuthorizationEndpoint()
33    {
34        return new Uri('https://bitly.com/oauth/authorize');
35    }
36
37    /**
38     * {@inheritdoc}
39     */
40    public function getAccessTokenEndpoint()
41    {
42        return new Uri('https://api-ssl.bitly.com/oauth/access_token');
43    }
44
45    /**
46     * {@inheritdoc}
47     */
48    protected function getAuthorizationMethod()
49    {
50        return static::AUTHORIZATION_METHOD_QUERY_STRING;
51    }
52
53    /**
54     * {@inheritdoc}
55     */
56    protected function parseAccessTokenResponse($responseBody)
57    {
58        $data = json_decode($responseBody, true);
59
60        if (null === $data || !is_array($data)) {
61            throw new TokenResponseException('Unable to parse response.');
62        } elseif (isset($data['error'])) {
63            throw new TokenResponseException('Error in retrieving token: "' . $data['error'] . '"');
64        }
65
66        $token = new StdOAuth2Token();
67        $token->setAccessToken($data['access_token']);
68        // I'm invincible!!!
69        $token->setEndOfLife(StdOAuth2Token::EOL_NEVER_EXPIRES);
70        unset($data['access_token']);
71
72        $token->setExtraParams($data);
73
74        return $token;
75    }
76
77    /**
78     * {@inheritdoc}
79     */
80    public function requestAccessToken($code, $state = null)
81    {
82        if (null !== $state) {
83            $this->validateAuthorizationState($state);
84        }
85
86        $bodyParams = array(
87            'code'          => $code,
88            'client_id'     => $this->credentials->getConsumerId(),
89            'client_secret' => $this->credentials->getConsumerSecret(),
90            'redirect_uri'  => $this->credentials->getCallbackUrl(),
91            'grant_type'    => 'authorization_code',
92        );
93
94        $responseBody = $this->httpClient->retrieveResponse(
95            $this->getAccessTokenEndpoint(),
96            $bodyParams,
97            $this->getExtraOAuthHeaders()
98        );
99
100        // we can scream what we want that we want bitly to return a json encoded string (format=json), but the
101        // WOAH WATCH YOUR LANGUAGE ;) service doesn't seem to like screaming, hence we need to manually
102        // parse the result
103        $parsedResult = array();
104        parse_str($responseBody, $parsedResult);
105
106        $token = $this->parseAccessTokenResponse(json_encode($parsedResult));
107        $this->storage->storeAccessToken($this->service(), $token);
108
109        return $token;
110    }
111}
112