rss-bridge/bridges/KununuBridge.php

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<?php
class KununuBridge extends BridgeAbstract{
public function loadMetadatas(){
$this->maintainer = "logmanoriginal";
$this->name = "Kununu Bridge"; /* This will be replaced later! */
$this->uri = "https://www.kununu.com"; /* This will be replaced later! */
$this->description = "Returns the latest reviews for a company and site of your choice.";
$this->parameters['global'] =
'[
{
"name" : "Site",
"identifier" : "site",
"type" : "list",
"required" : true,
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"exampleValue" : "United States",
"title" : "Select your site",
"values" :
[
{
"name" : "Austria",
"value" : "at"
},
{
"name" : "Germany",
"value" : "de"
},
{
"name" : "Switzerland",
"value" : "ch"
},
{
"name" : "United States",
"value" : "us"
}
]
},
{
"name" : "Load full article",
"identifier" : "full",
"type" : "checkbox",
"required" : false,
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"exampleValue" : "checked",
"title" : "Activate to load full article"
}
]';
$this->parameters[] =
'[
{
"name" : "Company",
"identifier" : "company",
"type" : "text",
"required" : true,
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"exampleValue" : "kununu-us",
"title" : "Insert company name (i.e. Kununu US) or URI path (i.e. kununu-us)"
}
]';
}
public function collectData(array $params){
// Get Site
$site = strtolower(trim($params['site']));
if(!isset($site) || empty($site) || !$this->site_is_valid($site))
$this->returnClientError('You must specify a valid site (&site=...)!');
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// Get Company (fixing whitespace and umlauts)
$company = $this->encode_umlauts(strtolower(str_replace(' ', '-', trim($params['company']))));
if(!isset($company) || empty($company))
$this->returnClientError('You must specify a company (&company=...)!');
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$full = false; // By default we'll load only short article
if(isset($params['full']))
$full = strtolower(trim($params['full'])) === 'on';
// Get reviews section name (depends on site)
$section = '';
switch($site){
case 'at':
case 'de':
case 'ch':
$section = 'kommentare';
break;
case 'us':
$section = 'reviews';
break;
default:
$this->returnServerError('The reviews section is not defined for you selection!');
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}
// Update URI for the content
$this->uri .= "/{$site}/{$company}/{$section}";
// Load page
$html = $this->getSimpleHTMLDOM($this->uri);
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if($html === false)
$this->returnServerError('Unable to receive data from ' . $this->uri . '!');
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// Update name for this request
$this->name = $this->extract_company_name($html) . ' - ' . $this->name;
// Find the section with all the panels (reviews)
$section = $html->find('section.kununu-scroll-element', 0);
if($section === false)
$this->returnServerError('Unable to find panel section!');
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// Find all articles (within the panels)
$articles = $section->find('article');
if($articles === false || empty($articles))
$this->returnServerError('Unable to find articles!');
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// Go through all articles
foreach($articles as $article){
$item = new \Item();
$item->author = $this->extract_article_author_position($article);
$item->timestamp = $this->extract_article_date($article);
$item->title = $this->extract_article_rating($article) . ' : ' . $this->extract_article_summary($article);
$item->uri = $this->extract_article_uri($article);
if($full)
$item->content = $this->extract_full_description($item->uri);
else
$item->content = $this->extract_article_description($article);
$this->items[] = $item;
}
}
public function getCacheDuration(){
return 86400; // 1 day
}
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/**
* Returns true if the given site is part of the parameters list
*/
private function site_is_valid($site){
$parameter = json_decode($this->parameters['global'], true);
$sites = $parameter[0]['values'];
$site_names = array();
foreach($sites as $site_item)
$site_names[] = $site_item['value'];
return in_array($site, $site_names);
}
/**
* Fixes relative URLs in the given text
*/
private function fix_url($text){
return preg_replace('/href=(\'|\")\//i', 'href="https://www.kununu.com/', $text);
}
/**
* Encodes unmlauts in the given text
*/
private function encode_umlauts($text){
$umlauts = Array("/ä/","/ö/","/ü/","/Ä/","/Ö/","/Ü/","/ß/");
$replace = Array("ae","oe","ue","Ae","Oe","Ue","ss");
return preg_replace($umlauts, $replace, $text);
}
/**
* Returns the company name from the review html
*/
private function extract_company_name($html){
$panel = $html->find('div.panel', 0);
if($panel === false)
$this->returnServerError('Cannot find panel for company name!');
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$company_name = $panel->find('h1', 0);
if($company_name === false)
$this->returnServerError('Cannot find company name!');
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return $company_name->plaintext;
}
/**
* Returns the date from a given article
*/
private function extract_article_date($article){
// They conviniently provide a time attribute for us :)
$date = $article->find('time[itemprop=dtreviewed]', 0);
if($date === false)
$this->returnServerError('Cannot find article date!');
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return strtotime($date->datetime);
}
/**
* Returns the rating from a given article
*/
private function extract_article_rating($article){
$rating = $article->find('span.rating', 0);
if($rating === false)
$this->returnServerError('Cannot find article rating!');
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return $rating->getAttribute('aria-label');
}
/**
* Returns the summary from a given article
*/
private function extract_article_summary($article){
$summary = $article->find('[itemprop=summary]', 0);
if($summary === false)
$this->returnServerError('Cannot find article summary!');
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return strip_tags($summary->innertext);
}
/**
* Returns the URI from a given article
*/
private function extract_article_uri($article){
// Notice: This first part is the same as in extract_article_summary!
$summary = $article->find('[itemprop=summary]', 0);
if($summary === false)
$this->returnServerError('Cannot find article summary!');
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$anchor = $summary->find('a', 0);
if($anchor === false)
$this->returnServerError('Cannot find article URI!');
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return 'https://www.kununu.com' . $anchor->href;
}
/**
* Returns the position of the author from a given article
*/
private function extract_article_author_position($article){
// We need to parse the aside manually
$aside = $article->find('aside', 0);
if($aside === false)
$this->returnServerError('Cannot find article author information!');
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// Go through all h2 elements to find index of required span (I know... it's stupid)
$author_position = 'Unknown';
foreach($aside->find('h2') as $subject){
if(stristr(strtolower($subject->plaintext), 'position')){ /* This works for at, ch, de, us */
$author_position = $subject->next_sibling()->plaintext;
break;
}
}
return $author_position;
}
/**
* Returns the description from a given article
*/
private function extract_article_description($article){
$description = $article->find('div[itemprop=description]', 0);
if($description === false)
$this->returnServerError('Cannot find article description!');
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return $this->fix_url($description->innertext);
}
/**
* Returns the full description from a given uri
*/
private function extract_full_description($uri){
// Load full article
$html = $this->getSimpleHTMLDOM($uri);
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if($html === false)
$this->returnServerError('Could not load full description!');
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// Find the article
$article = $html->find('article', 0);
if($article === false)
$this->returnServerError('Cannot find article!');
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// Luckily they use the same layout for the review overview and full article pages :)
return $this->extract_article_description($article);
}
}