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rss-bridge/bridges/JustETFBridge.php

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<?php
class JustETFBridge extends BridgeAbstract
{
const NAME = 'justETF Bridge';
const URI = 'https://www.justetf.com';
const DESCRIPTION = 'Currently only supports the news feed';
const MAINTAINER = 'logmanoriginal';
const PARAMETERS = [
'News' => [
'full' => [
'name' => 'Full Article',
'type' => 'checkbox',
'title' => 'Enable to load full articles'
]
],
'Profile' => [
'isin' => [
'name' => 'ISIN',
'type' => 'text',
'required' => true,
'exampleValue' => 'IE00B4X9L533',
'pattern' => '[a-zA-Z]{2}[a-zA-Z0-9]{10}',
'title' => 'ISIN, consisting of 2-letter country code, 9-character identifier, check character'
],
'strategy' => [
'name' => 'Include Strategy',
'type' => 'checkbox',
'defaultValue' => 'checked'
],
'description' => [
'name' => 'Include Description',
'type' => 'checkbox',
'defaultValue' => 'checked'
]
],
'global' => [
'lang' => [
'name' => 'Language',
'type' => 'list',
'values' => [
'Englisch' => 'en',
'Deutsch' => 'de',
'Italiano' => 'it'
],
'defaultValue' => 'Englisch'
]
]
];
public function collectData()
{
$html = getSimpleHTMLDOM($this->getURI());
defaultLinkTo($html, static::URI);
switch ($this->queriedContext) {
case 'News':
$this->collectNews($html);
break;
case 'Profile':
$this->collectProfile($html);
break;
}
}
public function getURI()
{
$uri = static::URI;
if ($this->getInput('lang')) {
$uri .= '/' . $this->getInput('lang');
}
switch ($this->queriedContext) {
case 'News':
$uri .= '/news';
break;
case 'Profile':
$uri .= '/etf-profile.html?' . http_build_query([
'isin' => strtoupper($this->getInput('isin'))
]);
break;
}
return $uri;
}
public function getName()
{
$name = static::NAME;
$name .= ($this->queriedContext) ? ' - ' . $this->queriedContext : '';
switch ($this->queriedContext) {
case 'News':
break;
case 'Profile':
if ($this->getInput('isin')) {
$name .= ' ISIN ' . strtoupper($this->getInput('isin'));
}
}
if ($this->getInput('lang')) {
$name .= ' (' . strtoupper($this->getInput('lang')) . ')';
}
return $name;
}
#region Common
/**
* Fixes dates depending on the choosen language:
*
* de : dd.mm.yy
* en : dd.mm.yy
* it : dd/mm/yy
*
* Basically strtotime doesn't convert dates correctly due to formats
* being hard to interpret. So we use the DateTime object, manually
* fixing dates and times (set to 00:00:00.000).
*
* We don't know the timezone, so just assume +00:00 (or whatever
* DateTime chooses)
*/
private function fixDate($date)
{
switch ($this->getInput('lang')) {
case 'en':
case 'de':
$df = date_create_from_format('d.m.y', $date);
break;
case 'it':
$df = date_create_from_format('d/m/y', $date);
break;
}
date_time_set($df, 0, 0);
return date_format($df, 'U');
}
private function extractImages($article)
{
// Notice: We can have zero or more images (though it should mostly be 1)
$elements = $article->find('img');
$images = [];
foreach ($elements as $img) {
// Skip the logo (mostly provided part of a hidden div)
if (substr($img->src, strrpos($img->src, '/') + 1) === 'logo.png') {
continue;
}
$images[] = $img->src;
}
return $images;
}
#endregion
#region News
private function collectNews($html)
{
$articles = $html->find('div.newsTopArticle')
or returnServerError('No articles found! Layout might have changed!');
foreach ($articles as $article) {
$item = [];
// Common data
$item['uri'] = $this->extractNewsUri($article);
$item['timestamp'] = $this->extractNewsDate($article);
$item['title'] = $this->extractNewsTitle($article);
if ($this->getInput('full')) {
$uri = $this->extractNewsUri($article);
$html = getSimpleHTMLDOMCached($uri)
or returnServerError('Failed loading full article from ' . $uri);
$fullArticle = $html->find('div.article', 0)
or returnServerError('No content found! Layout might have changed!');
defaultLinkTo($fullArticle, static::URI);
$item['author'] = $this->extractFullArticleAuthor($fullArticle);
$item['content'] = $this->extractFullArticleContent($fullArticle);
$item['enclosures'] = $this->extractImages($fullArticle);
} else {
$item['content'] = $this->extractNewsDescription($article);
$item['enclosures'] = $this->extractImages($article);
}
$this->items[] = $item;
}
}
private function extractNewsUri($article)
{
$element = $article->find('a', 0)
or returnServerError('Anchor not found!');
return $element->href;
}
private function extractNewsDate($article)
{
$element = $article->find('div.subheadline', 0)
or returnServerError('Date not found!');
$date = trim(explode('|', $element->plaintext)[0]);
return $this->fixDate($date);
}
private function extractNewsDescription($article)
{
$element = $article->find('span.newsText', 0)
or returnServerError('Description not found!');
$element->find('a', 0)->onclick = '';
return $element->innertext;
}
private function extractNewsTitle($article)
{
$element = $article->find('h3', 0)
or returnServerError('Title not found!');
return $element->plaintext;
}
private function extractFullArticleContent($article)
{
$element = $article->find('div.article_body', 0)
or returnServerError('Article body not found!');
// Remove teaser image
$element->find('img.teaser-img', 0)->outertext = '';
// Remove self advertisements
foreach ($element->find('.call-action') as $adv) {
$adv->outertext = '';
}
// Remove tips
foreach ($element->find('.panel-edu') as $tip) {
$tip->outertext = '';
}
// Remove inline scripts (used for i.e. interactive graphs) as they are
// rendered as a long series of strings
foreach ($element->find('script') as $script) {
$script->outertext = '[Content removed! Visit site to see full contents!]';
}
return $element->innertext;
}
private function extractFullArticleAuthor($article)
{
$element = $article->find('span[itemprop=name]', 0)
or returnServerError('Author not found!');
return $element->plaintext;
}
#endregion
#region Profile
private function collectProfile($html)
{
$item = [];
$item['uri'] = $this->getURI();
$item['timestamp'] = $this->extractProfileDate($html);
$item['title'] = $this->extractProfiletitle($html);
$item['author'] = $this->extractProfileAuthor($html);
$item['content'] = $this->extractProfileContent($html);
$this->items[] = $item;
}
private function extractProfileDate($html)
{
$element = $html->find('div.infobox div.vallabel', 0)
or returnServerError('Date not found!');
$date = trim(explode("\r\n", $element->plaintext)[1]);
return $this->fixDate($date);
}
private function extractProfileTitle($html)
{
$element = $html->find('span.h1', 0)
or returnServerError('Title not found!');
return $element->plaintext;
}
private function extractProfileContent($html)
{
// There are a few thins we are interested:
// - Investment Strategy
// - Description
// - Quote
$strategy = $html->find('div.tab-container div.col-sm-6 p', 0)
or returnServerError('Investment Strategy not found!');
// Description requires a bit of cleanup due to lack of propper identification
$description = $html->find('div.headline', 5)
or returnServerError('Description container not found!');
$description = $description->parent();
foreach ($description->find('div') as $div) {
$div->outertext = '';
}
$quote = $html->find('div.infobox div.val', 0)
or returnServerError('Quote not found!');
$quote_html = '<strong>Quote</strong><br><p>' . $quote . '</p>';
$strategy_html = '';
$description_html = '';
if ($this->getInput('strategy') === true) {
$strategy_html = '<strong>Strategy</strong><br><p>' . $strategy . '</p><br>';
}
if ($this->getInput('description') === true) {
$description_html = '<strong>Description</strong><br><p>' . $description . '</p><br>';
}
return $strategy_html . $description_html . $quote_html;
}
private function extractProfileAuthor($html)
{
// Use ISIN + WKN as author
// Notice: "identfier" is not a typo [sic]!
$element = $html->find('span.identfier', 0)
or returnServerError('Author not found!');
return $element->plaintext;
}
#endregion
}