[RevolutBridge] Add new bridge (#1321)

* [RevolutBridge] Add new bridge

bridges/RevolutBridge.php

@@ -0,0 +1,81 @@
+<?php
+
+class RevolutBridge extends BridgeAbstract {
+
+	const NAME = 'Revolut Blog';
+	const URI = 'https://blog.revolut.com/';
+	const DESCRIPTION = 'Returns recent blog posts from Revolut.';
+	const MAINTAINER = 'dominik-th';
+
+	public function getIcon() {
+		return self::URI . 'favicon.png';
+	}
+
+	public function collectData() {
+		$articleOverview = getSimpleHTMLDOM(self::URI . 'sitemap-posts.xml')
+			or returnServerError('Error while downloading the website content');
+
+		$articles = array_slice($articleOverview->find('url'), 0, 15);
+
+		foreach($articles as $article) {
+			$item = [];
+
+			$item['uri'] = $article->find('loc', 0)->plaintext;
+			$item['timestamp'] = $article->find('lastmod', 0)->plaintext;
+			$item['enclosures'] = [
+				$article->find('image:loc', 0)->plaintext
+			];
+
+			$fullArticle = getSimpleHTMLDOMCached($item['uri'])
+				or returnServerError('Error while downloading the full article');
+
+			$item['author'] = $fullArticle
+				->find('h4[class="author-card-name"] a', 0)
+				->plaintext;
+			$item['title'] = $fullArticle
+				->find('h1[class="post-full-title"]', 0)
+				->plaintext;
+
+			$content = $fullArticle
+				->find('section[class="post-full-content"]', 0);
+
+			foreach($content->find('img') as $image) {
+				$image->src = $this->generateAbsoluteUrl($image->src);
+			}
+
+			foreach($content->find('a') as $hyperlink) {
+				$hyperlink->href = $this->generateAbsoluteUrl($hyperlink->href);
+			}
+
+			foreach($content->find('iframe') as $iframe) {
+				$iframe->outertext = $this->generateYoutubeReplacement($iframe);
+			}
+
+			$item['content'] = $content->innertext;
+			$this->items[] = $item;
+		}
+	}
+
+	private function generateAbsoluteUrl($path) {
+		if (filter_var($path, FILTER_VALIDATE_URL)) {
+			return $path;
+		} else {
+			return self::URI . $path;
+		}
+	}
+
+	private function generateYoutubeReplacement($iframe) {
+		$embedUrl = $iframe->src;
+		if (parse_url($embedUrl, PHP_URL_HOST) === 'www.youtube.com') {
+			$urlParts = explode('/', parse_url($embedUrl, PHP_URL_PATH));
+			$videoId = end($urlParts);
+			$thumbnailUrl = 'https://img.youtube.com/vi/' . $videoId . '/0.jpg';
+			$videoUrl = 'https://www.youtube.com/watch?v=' . $videoId;
+			$videoReplacement = str_get_html('<a><img /></a>');
+			$videoReplacement->find('a', 0)->href = $videoUrl;
+			$videoReplacement->find('img', 0)->src = $thumbnailUrl;
+			return $videoReplacement;
+		}
+		return $iframe->outertext;
+	}
+}