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<?php
class GlassdoorBridge extends BridgeAbstract {
// Contexts
const CONTEXT_BLOG = 'Blogs';
const CONTEXT_REVIEW = 'Company Reviews';
const CONTEXT_GLOBAL = 'global';
// Global context parameters
const PARAM_LIMIT = 'limit';
// Blog context parameters
const PARAM_BLOG_TYPE = 'blog_type';
const PARAM_BLOG_FULL = 'full_article';
const BLOG_TYPE_HOME = 'Home';
const BLOG_TYPE_COMPANIES_HIRING = 'Companies Hiring';
const BLOG_TYPE_CAREER_ADVICE = 'Career Advice';
const BLOG_TYPE_INTERVIEWS = 'Interviews';
const BLOG_TYPE_GUIDE = 'Guides';
// Review context parameters
const PARAM_REVIEW_COMPANY = 'company';
const MAINTAINER = 'logmanoriginal';
const NAME = 'Glassdoor Bridge';
const URI = 'https://www.glassdoor.com/';
const DESCRIPTION = 'Returns feeds for blog posts and company reviews';
const CACHE_TIMEOUT = 86400; // 24 hours
const PARAMETERS = array(
self::CONTEXT_BLOG => array(
self::PARAM_BLOG_TYPE => array(
'name' => 'Blog type',
'type' => 'list',
'title' => 'Select the blog you want to follow',
'values' => array(
self::BLOG_TYPE_HOME => 'blog/',
self::BLOG_TYPE_COMPANIES_HIRING => 'blog/companies-hiring/',
self::BLOG_TYPE_CAREER_ADVICE => 'blog/career-advice/',
self::BLOG_TYPE_INTERVIEWS => 'blog/interviews/',
self::BLOG_TYPE_GUIDE => 'blog/guide/'
)
),
self::PARAM_BLOG_FULL => array(
'name' => 'Full article',
'type' => 'checkbox',
'title' => 'Enable to return the full article for each post'
),
),
self::CONTEXT_REVIEW => array(
self::PARAM_REVIEW_COMPANY => array(
'name' => 'Company URL',
'type' => 'text',
'required' => true,
'title' => 'Paste the company review page URL here!',
'exampleValue' => 'https://www.glassdoor.com/Reviews/GitHub-Reviews-E671945.htm'
)
),
self::CONTEXT_GLOBAL => array(
self::PARAM_LIMIT => array(
'name' => 'Limit',
'type' => 'number',
'defaultValue' => -1,
'title' => 'Specifies the maximum number of items to return (default: All)'
)
)
);
private $host = self::URI; // They redirect without notice :/
private $title = '';
public function getURI() {
switch($this->queriedContext) {
case self::CONTEXT_BLOG:
return self::URI . $this->getInput(self::PARAM_BLOG_TYPE);
case self::CONTEXT_REVIEW:
return $this->filterCompanyURI($this->getInput(self::PARAM_REVIEW_COMPANY));
}
return parent::getURI();
}
public function getName() {
return $this->title ? $this->title . ' - ' . self::NAME : parent::getName();
}
public function collectData() {
$html = getSimpleHTMLDOM($this->getURI())
or returnServerError('Failed loading contents!');
$this->host = $html->find('link[rel="canonical"]', 0)->href;
$html = defaultLinkTo($html, $this->host);
$this->title = $html->find('meta[property="og:title"]', 0)->content;
$limit = $this->getInput(self::PARAM_LIMIT);
switch($this->queriedContext) {
case self::CONTEXT_BLOG:
$this->collectBlogData($html, $limit);
break;
case self::CONTEXT_REVIEW:
$this->collectReviewData($html, $limit);
break;
}
}
private function collectBlogData($html, $limit) {
$posts = $html->find('section')
or returnServerError('Unable to find blog posts!');
foreach($posts as $post) {
$item = array();
$item['uri'] = $post->find('header a', 0)->href;
$item['title'] = $post->find('header', 0)->plaintext;
$item['content'] = $post->find('div[class="excerpt-content"]', 0)->plaintext;
$item['enclosures'] = array(
$this->getFullSizeImageURI($post->find('div[class="post-thumb"]', 0)->{'data-original'})
);
// optionally load full articles
if($this->getInput(self::PARAM_BLOG_FULL)) {
$full_html = getSimpleHTMLDOMCached($item['uri'])
or returnServerError('Unable to load full article!');
$full_html = defaultLinkTo($full_html, $this->host);
$item['author'] = $full_html->find('a[rel="author"]', 0);
$item['content'] = $full_html->find('article', 0);
$item['timestamp'] = strtotime($full_html->find('time.updated', 0)->datetime);
$item['categories'] = $full_html->find('span[class="post_tag"]');
}
$this->items[] = $item;
if($limit > 0 && count($this->items) >= $limit)
return;
}
}
private function collectReviewData($html, $limit) {
$reviews = $html->find('#EmployerReviews li[id^="empReview]')
or returnServerError('Unable to find reviews!');
foreach($reviews as $review) {
$item = array();
$item['uri'] = $review->find('a.reviewLink', 0)->href;
$item['title'] = $review->find('[class="summary"]', 0)->plaintext;
$item['author'] = $review->find('div.author span', 0)->plaintext;
$item['timestamp'] = strtotime($review->find('time', 0)->datetime);
$mainText = $review->find('p.mainText', 0)->plaintext;
$description = $review->find('div.prosConsAdvice', 0)->innertext;
$item['content'] = "<p>{$mainText}</p><p>{$description}</p>";
$this->items[] = $item;
if($limit > 0 && count($this->items) >= $limit)
return;
}
}
private function getFullSizeImageURI($uri) {
/* Images are scaled for display on the website. The scaling takes place
* on the host, who provides images in different sizes.
*
* For example:
* https://www.glassdoor.com/blog/app/uploads/sites/2/GettyImages-982402074-e1538092065712-390x193.jpg
*
* By removing the size information we receive the full sized image.
*
* For example:
* https://www.glassdoor.com/blog/app/uploads/sites/2/GettyImages-982402074-e1538092065712.jpg
*/
$uri = filter_var($uri, FILTER_SANITIZE_URL);
return preg_replace('/(.*)(\-\d+x\d+)(\.jpg)/', '$1$3', $uri);
}
private function filterCompanyURI($uri) {
/* Make sure the URI is a valid review page. Unfortunately there is no
* simple way to determine if the URI is valid, because of automagic
* redirection and strange naming conventions.
*/
if(!filter_var($uri,
FILTER_VALIDATE_URL, FILTER_FLAG_PATH_REQUIRED)) {
returnClientError('The specified URL is invalid!');
}
$uri = filter_var($uri, FILTER_SANITIZE_URL);
$path = parse_url($uri, PHP_URL_PATH);
$parts = explode('/', $path);
$allowed_strings = array(
'de-DE' => 'Bewertungen',
'en-AU' => 'Reviews',
'nl-BE' => 'Reviews',
'fr-BE' => 'Avis',
'en-CA' => 'Reviews',
'fr-CA' => 'Avis',
'fr-FR' => 'Avis',
'en-IN' => 'Reviews',
'en-IE' => 'Reviews',
'nl-NL' => 'Reviews',
'de-AT' => 'Bewertungen',
'de-CH' => 'Bewertungen',
'fr-CH' => 'Avis',
'en-GB' => 'Reviews',
'en' => 'Reviews'
);
if(!in_array($parts[1], $allowed_strings)) {
returnClientError('Please specify a URL pointing to the companies review page!');
}
return $uri;
}
}
|
