[DribbbleBridge] Add dribble bridge listing last dribble popular shots (#558)

bridges/DribbbleBridge.php

@@ -0,0 +1,91 @@
+<?php
+class DribbbleBridge extends BridgeAbstract {
+
+	const MAINTAINER = 'quentinus95';
+	const NAME = 'Dribbble popular shots';
+	const URI = 'https://dribbble.com';
+	const CACHE_TIMEOUT = 1800;
+	const DESCRIPTION = 'Returns the newest popular shots from Dribbble.';
+
+	public function collectData(){
+		$html = getSimpleHTMLDOM(self::URI . '/shots')
+			or returnServerError('Error while downloading the website content');
+
+		$json = $this->loadEmbeddedJsonData($html);
+
+		foreach($html->find('li[id^="screenshot-"]') as $shot) {
+			$item = [];
+
+			$additional_data = $this->findJsonForShot($shot, $json);
+			if ($additional_data === null) {
+				$item['uri'] = self::URI . $shot->find('a', 0)->href;
+				$item['title'] = $shot->find('.dribbble-over strong', 0)->plaintext;
+			} else {
+				$item['timestamp'] = strtotime($additional_data['published_at']);
+				$item['uri'] = self::URI . $additional_data['path'];
+				$item['title'] = $additional_data['title'];
+			}
+
+			$item['author'] = trim($shot->find('.attribution-user a', 0)->plaintext);
+
+			$description = $shot->find('.comment', 0);
+			$item['content'] = $description === null ? '' : $description->plaintext;
+
+			$preview_path = $shot->find('picture source', 0)->attr['srcset'];
+			$item['content'] .= $this->getImageTag($preview_path, $item['title']);
+			$item['enclosures'] = [$this->getFullSizeImagePath($preview_path)];
+
+			$this->items[] = $item;
+		}
+	}
+
+	private function loadEmbeddedJsonData($html){
+		$json = [];
+		$scripts = $html->find('script');
+
+		foreach($scripts as $script) {
+			if(strpos($script->innertext, 'newestShots') !== false) {
+				// fix single quotes
+				$script->innertext = str_replace('\'', '"', $script->innertext);
+
+				// fix JavaScript JSON (why do they not adhere to the standard?)
+				$script->innertext = preg_replace('/(\w+):/i', '"\1":', $script->innertext);
+
+				// find beginning of JSON array
+				$start = strpos($script->innertext, '[');
+
+				// find end of JSON array, compensate for missing character!
+				$end = strpos($script->innertext, '];') + 1;
+
+				// convert JSON to PHP array
+				$json = json_decode(substr($script->innertext, $start, $end - $start), true);
+				break;
+			}
+		}
+
+		return $json;
+	}
+
+	private function findJsonForShot($shot, $json){
+		foreach($json as $element) {
+			if(strpos($shot->getAttribute('id'), (string)$element['id']) !== false) {
+				return $element;
+			}
+		}
+
+		return null;
+	}
+
+	private function getImageTag($preview_path, $title){
+		return sprintf(
+			'<br /> <a href="%s"><img src="%s" alt="%s" /></a>',
+			$this->getFullSizeImagePath($preview_path),
+			$preview_path,
+			$title
+		);
+	}
+
+	private function getFullSizeImagePath($preview_path){
+		return str_replace('_1x', '', $preview_path);
+	}
+}