LinkedIn::api() - Code Metrics - Inspection of "Implementing use of PSR7" - Happyr/LinkedIn-API-client - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#73)

by Tobias

created 2015-12-22 17:10 UTC

LinkedIn::api() B

↳ Parent: LinkedIn

Complexity

Conditions	4
Paths	4

Size

Total Lines	27
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Importance

Changes	13
Bugs	2	Features	0

Metric	Value
c	13
b	2
f	0
dl	0
loc	27
rs	8.5806
cc	4
eloc	14
nc	4
nop	3

<?php

namespace Happyr\LinkedIn;

use Happyr\LinkedIn\Exception\LoginError;
use Happyr\LinkedIn\Http\GlobalVariableGetter;
use Happyr\LinkedIn\Http\RequestManager;
use Happyr\LinkedIn\Http\ResponseConverter;
use Happyr\LinkedIn\Http\UrlGenerator;
use Happyr\LinkedIn\Http\UrlGeneratorInterface;
use Happyr\LinkedIn\Storage\DataStorageInterface;
use Http\Client\HttpClient;
use Psr\Http\Message\ResponseInterface;

/**
 * Class LinkedIn lets you talk to LinkedIn api.
 *
 * When a new user arrives and want to authenticate here is whats happens:
 * 1. You redirect him to whatever url getLoginUrl() returns.
 * 2. The user logs in on www.linkedin.com and authorize your application.
 * 3. The user returns to your site with a *code* in the the $_REQUEST.
 * 4. You call isAuthenticated() or getAccessToken()
 * 5. We don't got an access token (only a *code*). So getAccessToken() calls fetchNewAccessToken()
 * 6. fetchNewAccessToken() gets the *code* from the $_REQUEST and calls getAccessTokenFromCode()
 * 7. getAccessTokenFromCode() makes a request to www.linkedin.com and exchanges the *code* for an access token
 * 8. When you have the access token you should store it in a database and/or query the API.
 * 9. When you make a second request to the API we have the access token in memory, so we don't go through all these
 *    authentication steps again.
 *
 * @author Tobias Nyholm
 */
class LinkedIn
{
    /**
     * The OAuth access token received in exchange for a valid authorization
     * code.  null means the access token has yet to be determined.
     *
     * @var AccessToken
     */
    protected $accessToken = null;

    /**
     * @var string format
     */
    private $format;

    /**
     * @var string responseFormat
     */
    private $responseDataType;

    /**
     * @var ResponseInterface
     */
    private $lastResponse;

    /**
     * @var RequestManager
     */
    private $requestManager;

    /**
     * @var Authenticator
     */
    private $authenticator;

    /**
     * @var UrlGeneratorInterface
     */
    private $urlGenerator;

    /**
     * Constructor.
     *
     * @param string $appId
     * @param string $appSecret
     * @param string $format           'json', 'xml'
     * @param string $responseDataType 'array', 'string', 'simple_xml' 'psr7', 'stream'
     */
    public function __construct($appId, $appSecret, $format = 'json', $responseDataType = 'array')
    {
        $this->format = $format;
        $this->responseDataType = $responseDataType;

        $this->requestManager = new RequestManager();
        $this->authenticator = new Authenticator($this->requestManager, $appId, $appSecret);
    }

    /**
     * Is the current user authenticated?
     *
     * @return bool
     */
    public function isAuthenticated()
    {
        $accessToken = $this->getAccessToken();
        if ($accessToken === null) {
            return false;
        }

        $user = $this->api('GET', '/v1/people/~:(id,firstName,lastName)', array('format' => 'json', 'response_data_type' => 'array'));

        return !empty($user['id']);
    }

    /**
     * Make an API call. Read about what calls that are possible here: https://developer.linkedin.com/docs/rest-api.
     *
     * Example:
     * $linkedIn->api('GET', '/v1/people/~:(id,firstName,lastName,headline)');
     *
     * The options:
     * - body: the body of the request
     * - format: the format you are using to send the request
     * - headers: array with headers to use
     * - response_data_type: the data type to get back
     * - query: query parameters to the request
     *
     * @param string $method   This is the HTTP verb
     * @param string $resource everything after the domain in the URL.
     * @param array  $options  See the readme for option description.
     *
     * @return mixed this depends on the response_data_type parameter.
     */
    public function api($method, $resource, array $options = array())
    {
        // Add access token to the headers
        $options['headers']['Authorization'] = sprintf('Bearer %s', (string) $this->getAccessToken());

        // Do logic and adjustments to the options
        $requestFormat = $this->filterRequestOption($options);

        // Generate an url
        $url = $this->getUrlGenerator()->getUrl(
            'api',
            $resource,
            isset($options['query']) ? $options['query'] : array()
        );

        $body = isset($options['body']) ? $options['body'] : null;
        $this->lastResponse = $this->getRequestManager()->sendRequest($method, $url, $options['headers'], $body);

        //Get the response data format
        if (isset($options['response_data_type'])) {
            $responseDataType = $options['response_data_type'];
        } else {
            $responseDataType = $this->getResponseDataType();
        }

        return ResponseConverter::convert($this->lastResponse, $requestFormat, $responseDataType);
    }

    /**
     * Modify and filter the request options. Make sure we use the correct query parameters and headers.
     *
     * @param array &$options
     *
     * @return string the request format to use
     */
    protected function filterRequestOption(array &$options)
    {
        if (isset($options['json'])) {
            $options['format'] = 'json';
            $options['body'] = json_encode($options['json']);
        } elseif (!isset($options['format'])) {
            // Make sure we always have a format
            $options['format'] = $this->getFormat();
        }

        // Set correct headers for this format
        switch ($options['format']) {
            case 'xml':
                $options['headers']['Content-Type'] = 'text/xml';
                break;
            case 'json':
                $options['headers']['Content-Type'] = 'application/json';
                $options['headers']['x-li-format'] = 'json';
                $options['query']['format'] = 'json';
                break;
            default:
                // Do nothing
        }

        return $options['format'];
    }

    /**
     * Get a login URL where the user can put his/hers LinkedIn credentials and authorize the application.
     *
     * The options:
     * - redirect_uri: the url to go to after a successful login
     * - scope: comma (or space) separated list of requested extended permissions
     *
     * @param array $options Provide custom parameters
     *
     * @return string The URL for the login flow
     */
    public function getLoginUrl($options = array())
    {
        return $this->getAuthenticator()->getLoginUrl($this->getUrlGenerator(), $options);
    }

    /**
     * See docs for LinkedIn::api().
     *
     * @param string $resource
     * @param array  $options
     *
     * @return mixed
     */
    public function get($resource, array $options = array())
    {
        return $this->api('GET', $resource, $options);
    }

    /**
     * See docs for LinkedIn::api().
     *
     * @param string $resource
     * @param array  $options
     *
     * @return mixed
     */
    public function post($resource, array $options = array())
    {
        return $this->api('POST', $resource, $options);
    }

    /**
     * Clear the data storage. This will forget everything about the user and authentication process.
     *
     * @return $this
     */
    public function clearStorage()
    {
        $this->getAuthenticator()->clearStorage();

        return $this;
    }

    /**
     * If the user has canceled the login we will return with an error.
     *
     * @return bool
     */
    public function hasError()
    {
        return GlobalVariableGetter::has('error');
    }

    /**
     * Returns a LoginError or null.
     *
     * @return LoginError|null
     */
    public function getError()
    {
        if ($this->hasError()) {
            return new LoginError(GlobalVariableGetter::get('error'), GlobalVariableGetter::get('error_description'));
        }
    }

    /**
     * Get the default format to use when sending requests.
     *
     * @return string
     */
    public function getFormat()
    {
        return $this->format;
    }

    /**
     * Set the default format to use when sending requests.
     *
     * @param string $format
     *
     * @return $this
     */
    public function setFormat($format)
    {
        $this->format = $format;

        return $this;
    }

    /**
     * Get the default data type to be returned as a response.
     *
     * @return string
     */
    public function getResponseDataType()
    {
        return $this->responseDataType;
    }

    /**
     * Set the default data type to be returned as a response.
     *
     * @param string $responseDataType
     *
     * @return $this
     */
    public function setResponseDataType($responseDataType)
    {
        $this->responseDataType = $responseDataType;

        return $this;
    }

    /**
     * Get the last response. This will always return a PSR-7 response no matter of the data type used.
     *
     * @return ResponseInterface|null
     */
    public function getLastResponse()
    {
        return $this->lastResponse;
    }

    /**
     * Returns an access token. If we do not have one in memory, try to fetch one from a *code* in the $_REQUEST.
     *
     * @return AccessToken|null The access token of null if the access token is not found
     */
    public function getAccessToken()
    {
        if ($this->accessToken === null) {
            if (null !== $newAccessToken = $this->getAuthenticator()->fetchNewAccessToken($this->getUrlGenerator())) {
                $this->setAccessToken($newAccessToken);
            }
        }

        // return the new access token or null if none found
        return $this->accessToken;
    }

    /**
     * If you have stored a previous access token in a storage (database) you could set it here. After setting an
     * access token you have to make sure to verify it is still valid by running LinkedIn::isAuthenticated.
     *
     * @param string|AccessToken $accessToken
     *
     * @return $this
     */
    public function setAccessToken($accessToken)
    {
        if (!($accessToken instanceof AccessToken)) {
            $accessToken = new AccessToken($accessToken);
        }

        $this->accessToken = $accessToken;

        return $this;
    }

    /**
     * Set a URL generator.
     *
     * @param UrlGeneratorInterface $urlGenerator
     *
     * @return $this
     */
    public function setUrlGenerator(UrlGeneratorInterface $urlGenerator)
    {
        $this->urlGenerator = $urlGenerator;

        return $this;
    }

    /**
     * @return UrlGeneratorInterface
     */
    protected function getUrlGenerator()
    {
        if ($this->urlGenerator === null) {
            $this->urlGenerator = new UrlGenerator();
        }

        return $this->urlGenerator;
    }

    /**
     * Set a data storage.
     *
     * @param DataStorageInterface $storage
     *
     * @return $this
     */
    public function setStorage(DataStorageInterface $storage)
    {
        $this->getAuthenticator()->setStorage($storage);

        return $this;
    }

    /**
     * Set a http client.
     *
     * @param HttpClient $client
     *
     * @return $this
     */
    public function setHttpClient(HttpClient $client)
    {
        $this->getRequestManager()->setHttpClient($client);

        return $this;
    }

    /**
     * @return RequestManager
     */
    protected function getRequestManager()
    {
        return $this->requestManager;
    }

    /**
     * @return Authenticator
     */
    protected function getAuthenticator()
    {
        return $this->authenticator;
    }
}


1			<?php
2
3			namespace Happyr\LinkedIn;
4
5			use Happyr\LinkedIn\Exception\LoginError;
6			use Happyr\LinkedIn\Http\GlobalVariableGetter;
7			use Happyr\LinkedIn\Http\RequestManager;
8			use Happyr\LinkedIn\Http\ResponseConverter;
9			use Happyr\LinkedIn\Http\UrlGenerator;
10			use Happyr\LinkedIn\Http\UrlGeneratorInterface;
11			use Happyr\LinkedIn\Storage\DataStorageInterface;
12			use Http\Client\HttpClient;
13			use Psr\Http\Message\ResponseInterface;
14
15			/**
16			* Class LinkedIn lets you talk to LinkedIn api.
17			*
18			* When a new user arrives and want to authenticate here is whats happens:
19			* 1. You redirect him to whatever url getLoginUrl() returns.
20			* 2. The user logs in on www.linkedin.com and authorize your application.
21			* 3. The user returns to your site with a code in the the $_REQUEST.
22			* 4. You call isAuthenticated() or getAccessToken()
23			* 5. We don't got an access token (only a code). So getAccessToken() calls fetchNewAccessToken()
24			* 6. fetchNewAccessToken() gets the code from the $_REQUEST and calls getAccessTokenFromCode()
25			* 7. getAccessTokenFromCode() makes a request to www.linkedin.com and exchanges the code for an access token
26			* 8. When you have the access token you should store it in a database and/or query the API.
27			* 9. When you make a second request to the API we have the access token in memory, so we don't go through all these
28			* authentication steps again.
29			*
30			* @author Tobias Nyholm
31			*/
32			class LinkedIn
33			{
34			/**
35			* The OAuth access token received in exchange for a valid authorization
36			* code. null means the access token has yet to be determined.
37			*
38			* @var AccessToken
39			*/
40			protected $accessToken = null;
41
42			/**
43			* @var string format
44			*/
45			private $format;
46
47			/**
48			* @var string responseFormat
49			*/
50			private $responseDataType;
51
52			/**
53			* @var ResponseInterface
54			*/
55			private $lastResponse;
56
57			/**
58			* @var RequestManager
59			*/
60			private $requestManager;
61
62			/**
63			* @var Authenticator
64			*/
65			private $authenticator;
66
67			/**
68			* @var UrlGeneratorInterface
69			*/
70			private $urlGenerator;
71
72			/**
73			* Constructor.
74			*
75			* @param string $appId
76			* @param string $appSecret
77			* @param string $format 'json', 'xml'
78			* @param string $responseDataType 'array', 'string', 'simple_xml' 'psr7', 'stream'
79			*/
80			public function __construct($appId, $appSecret, $format = 'json', $responseDataType = 'array')
81			{
82			$this->format = $format;
83			$this->responseDataType = $responseDataType;
84
85			$this->requestManager = new RequestManager();
86			$this->authenticator = new Authenticator($this->requestManager, $appId, $appSecret);
87			}
88
89			/**
90			* Is the current user authenticated?
91			*
92			* @return bool
93			*/
94			public function isAuthenticated()
95			{
96			$accessToken = $this->getAccessToken();
97			if ($accessToken === null) {
98			return false;
99			}
100
101			$user = $this->api('GET', '/v1/people/~:(id,firstName,lastName)', array('format' => 'json', 'response_data_type' => 'array'));
102
103			return !empty($user['id']);
104			}
105
106			/**
107			* Make an API call. Read about what calls that are possible here: https://developer.linkedin.com/docs/rest-api.
108			*
109			* Example:
110			* $linkedIn->api('GET', '/v1/people/~:(id,firstName,lastName,headline)');
111			*
112			* The options:
113			* - body: the body of the request
114			* - format: the format you are using to send the request
115			* - headers: array with headers to use
116			* - response_data_type: the data type to get back
117			* - query: query parameters to the request
118			*
119			* @param string $method This is the HTTP verb
120			* @param string $resource everything after the domain in the URL.
121			* @param array $options See the readme for option description.
122			*
123			* @return mixed this depends on the response_data_type parameter.
124			*/
125			public function api($method, $resource, array $options = array())
126			{
127			// Add access token to the headers
128			$options['headers']['Authorization'] = sprintf('Bearer %s', (string) $this->getAccessToken());
129
130			// Do logic and adjustments to the options
131			$requestFormat = $this->filterRequestOption($options);
132
133			// Generate an url
134			$url = $this->getUrlGenerator()->getUrl(
135			'api',
136			$resource,
137			isset($options['query']) ? $options['query'] : array()
138			);
139
140			$body = isset($options['body']) ? $options['body'] : null;
141			$this->lastResponse = $this->getRequestManager()->sendRequest($method, $url, $options['headers'], $body);
142
143			//Get the response data format
144			if (isset($options['response_data_type'])) {
145			$responseDataType = $options['response_data_type'];
146			} else {
147			$responseDataType = $this->getResponseDataType();
148			}
149
150			return ResponseConverter::convert($this->lastResponse, $requestFormat, $responseDataType);
151			}
152
153			/**
154			* Modify and filter the request options. Make sure we use the correct query parameters and headers.
155			*
156			* @param array &$options
157			*
158			* @return string the request format to use
159			*/
160			protected function filterRequestOption(array &$options)
161			{
162			if (isset($options['json'])) {
163			$options['format'] = 'json';
164			$options['body'] = json_encode($options['json']);
165			} elseif (!isset($options['format'])) {
166			// Make sure we always have a format
167			$options['format'] = $this->getFormat();
168			}
169
170			// Set correct headers for this format
171			switch ($options['format']) {
172			case 'xml':
173			$options['headers']['Content-Type'] = 'text/xml';
174			break;
175			case 'json':
176			$options['headers']['Content-Type'] = 'application/json';
177			$options['headers']['x-li-format'] = 'json';
178			$options['query']['format'] = 'json';
179			break;
180			default:
181			// Do nothing
182			}
183
184			return $options['format'];
185			}
186
187			/**
188			* Get a login URL where the user can put his/hers LinkedIn credentials and authorize the application.
189			*
190			* The options:
191			* - redirect_uri: the url to go to after a successful login
192			* - scope: comma (or space) separated list of requested extended permissions
193			*
194			* @param array $options Provide custom parameters
195			*
196			* @return string The URL for the login flow
197			*/
198			public function getLoginUrl($options = array())
199			{
200			return $this->getAuthenticator()->getLoginUrl($this->getUrlGenerator(), $options);
201			}
202
203			/**
204			* See docs for LinkedIn::api().
205			*
206			* @param string $resource
207			* @param array $options
208			*
209			* @return mixed
210			*/
211			public function get($resource, array $options = array())
212			{
213			return $this->api('GET', $resource, $options);
214			}
215
216			/**
217			* See docs for LinkedIn::api().
218			*
219			* @param string $resource
220			* @param array $options
221			*
222			* @return mixed
223			*/
224			public function post($resource, array $options = array())
225			{
226			return $this->api('POST', $resource, $options);
227			}
228
229			/**
230			* Clear the data storage. This will forget everything about the user and authentication process.
231			*
232			* @return $this
233			*/
234			public function clearStorage()
235			{
236			$this->getAuthenticator()->clearStorage();
237
238			return $this;
239			}
240
241			/**
242			* If the user has canceled the login we will return with an error.
243			*
244			* @return bool
245			*/
246			public function hasError()
247			{
248			return GlobalVariableGetter::has('error');
249			}
250
251			/**
252			* Returns a LoginError or null.
253			*
254			* @return LoginError\|null
255			*/
256			public function getError()
257			{
258			if ($this->hasError()) {
259			return new LoginError(GlobalVariableGetter::get('error'), GlobalVariableGetter::get('error_description'));
260			}
261			}
262
263			/**
264			* Get the default format to use when sending requests.
265			*
266			* @return string
267			*/
268			public function getFormat()
269			{
270			return $this->format;
271			}
272
273			/**
274			* Set the default format to use when sending requests.
275			*
276			* @param string $format
277			*
278			* @return $this
279			*/
280			public function setFormat($format)
281			{
282			$this->format = $format;
283
284			return $this;
285			}
286
287			/**
288			* Get the default data type to be returned as a response.
289			*
290			* @return string
291			*/
292			public function getResponseDataType()
293			{
294			return $this->responseDataType;
295			}
296
297			/**
298			* Set the default data type to be returned as a response.
299			*
300			* @param string $responseDataType
301			*
302			* @return $this
303			*/
304			public function setResponseDataType($responseDataType)
305			{
306			$this->responseDataType = $responseDataType;
307
308			return $this;
309			}
310
311			/**
312			* Get the last response. This will always return a PSR-7 response no matter of the data type used.
313			*
314			* @return ResponseInterface\|null
315			*/
316			public function getLastResponse()
317			{
318			return $this->lastResponse;
319			}
320
321			/**
322			* Returns an access token. If we do not have one in memory, try to fetch one from a code in the $_REQUEST.
323			*
324			* @return AccessToken\|null The access token of null if the access token is not found
325			*/
326			public function getAccessToken()
327			{
328			if ($this->accessToken === null) {
329			if (null !== $newAccessToken = $this->getAuthenticator()->fetchNewAccessToken($this->getUrlGenerator())) {
330			$this->setAccessToken($newAccessToken);
331			}
332			}
333
334			// return the new access token or null if none found
335			return $this->accessToken;
336			}
337
338			/**
339			* If you have stored a previous access token in a storage (database) you could set it here. After setting an
340			* access token you have to make sure to verify it is still valid by running LinkedIn::isAuthenticated.
341			*
342			* @param string\|AccessToken $accessToken
343			*
344			* @return $this
345			*/
346			public function setAccessToken($accessToken)
347			{
348			if (!($accessToken instanceof AccessToken)) {
349			$accessToken = new AccessToken($accessToken);
350			}
351
352			$this->accessToken = $accessToken;
353
354			return $this;
355			}
356
357			/**
358			* Set a URL generator.
359			*
360			* @param UrlGeneratorInterface $urlGenerator
361			*
362			* @return $this
363			*/
364			public function setUrlGenerator(UrlGeneratorInterface $urlGenerator)
365			{
366			$this->urlGenerator = $urlGenerator;
367
368			return $this;
369			}
370
371			/**
372			* @return UrlGeneratorInterface
373			*/
374			protected function getUrlGenerator()
375			{
376			if ($this->urlGenerator === null) {
377			$this->urlGenerator = new UrlGenerator();
378			}
379
380			return $this->urlGenerator;
381			}
382
383			/**
384			* Set a data storage.
385			*
386			* @param DataStorageInterface $storage
387			*
388			* @return $this
389			*/
390			public function setStorage(DataStorageInterface $storage)
391			{
392			$this->getAuthenticator()->setStorage($storage);
393
394			return $this;
395			}
396
397			/**
398			* Set a http client.
399			*
400			* @param HttpClient $client
401			*
402			* @return $this
403			*/
404			public function setHttpClient(HttpClient $client)
405			{
406			$this->getRequestManager()->setHttpClient($client);
407
408			return $this;
409			}
410
411			/**
412			* @return RequestManager
413			*/
414			protected function getRequestManager()
415			{
416			return $this->requestManager;
417			}
418
419			/**
420			* @return Authenticator
421			*/
422			protected function getAuthenticator()
423			{
424			return $this->authenticator;
425			}
426			}
427

Happyr / LinkedIn-API-client

Pull Request — master (#73)

LinkedIn::api() B

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