[NationalGeographicBridge] Add new bridge

bridges/NationalGeographicBridge.php

@@ -0,0 +1,194 @@
+<?php
+class NationalGeographicBridge extends BridgeAbstract {
+
+	const CONTEXT_BY_TOPIC = 'By Topic';
+	const PARAMETER_TOPIC = 'topic';
+	const PARAMETER_FULL_ARTICLE = 'full';
+	const TOPIC_MAGAZINE = 'Magazine';
+	const TOPIC_LATEST_STORIES = 'Latest Stories';
+
+	const NAME = 'National Geographic';
+	const URI = 'https://www.nationalgeographic.com/';
+	const DESCRIPTION = 'Fetches the latest articles from the National Geographic Magazine';
+	const MAINTAINER = 'logmanoriginal';
+	const PARAMETERS = array(
+		self::CONTEXT_BY_TOPIC => array(
+			self::PARAMETER_TOPIC => array(
+				'name' => 'Topic',
+				'type' => 'list',
+				'values' => array(
+					self::TOPIC_MAGAZINE => 'magazine',
+					self::TOPIC_LATEST_STORIES => 'latest-stories'
+				),
+				'title' => 'Select your topic',
+				'defaultValue' => 'Magazine'
+			)
+		),
+		'global' => array(
+			self::PARAMETER_FULL_ARTICLE => array(
+				'name' => 'Full Article',
+				'type' => 'checkbox',
+				'title' => 'Enable to load full articles (takes longer)'
+			)
+		)
+	);
+
+	private $topicName = '';
+
+	public function getURI() {
+		switch ($this->queriedContext) {
+			case self::CONTEXT_BY_TOPIC: {
+				return self::URI . $this->getInput(self::PARAMETER_TOPIC);
+			} break;
+			default: {
+				return parent::getURI();
+			}
+		}
+	}
+
+	public function collectData() {
+		$this->topicName = $this->getTopicName($this->getInput(self::PARAMETER_TOPIC));
+
+		switch($this->topicName) {
+			case self::TOPIC_MAGAZINE: {
+				return $this->collectMagazine();
+			} break;
+			case self::TOPIC_LATEST_STORIES: {
+				return $this->collectLatestStories();
+			} break;
+			default: {
+				returnServerError('Unknown topic: "' . $this->topicName . '"');
+			}
+		}
+	}
+
+	public function getName() {
+		switch ($this->queriedContext) {
+			case self::CONTEXT_BY_TOPIC: {
+				return static::NAME . ': ' . $this->topicName;
+			} break;
+			default: {
+				return parent::getName();
+			}
+		}
+	}
+
+	private function getTopicName($topic) {
+		return array_search($topic, static::PARAMETERS[self::CONTEXT_BY_TOPIC][self::PARAMETER_TOPIC]['values']);
+	}
+
+	private function collectMagazine() {
+		$uri = $this->getURI();
+
+		$html = getSimpleHTMLDOM($uri)
+			or returnServerError('Could not request ' . $uri);
+
+		$script = $html->find('#lead-component script')[0];
+
+		$json = json_decode($script->innertext, true);
+
+		// This is probably going to break in the future, fix it then :)
+		foreach($json['body']['0']['multilayout_promo_beta']['stories'] as $story) {
+			$this->addStory($story);
+		}
+	}
+
+	private function collectLatestStories() {
+		$uri = self::URI . 'latest-stories/_jcr_content/content/hubfeed.promo-hub-feed-all-stories.json';
+
+		$json_raw = getContents($uri)
+			or returnServerError('Could not request ' . $uri);
+
+		foreach(json_decode($json_raw, true) as $story) {
+			$this->addStory($story);
+		}
+	}
+
+	private function addStory($story) {
+		$title = 'Unknown title';
+		$content = '';
+
+		foreach($story['components'] as $component) {
+			switch($component['content_type']) {
+				case 'title': {
+					$title = $component['title']['text'];
+				} break;
+				case 'dek': {
+					$content = $component['dek']['text'];
+				} break;
+			}
+		}
+
+		$item = array();
+
+		$item['uri'] = $story['uri'];
+		$item['title'] = $title;
+
+		// if full article is requested!
+		if ($this->getInput(self::PARAMETER_FULL_ARTICLE))
+			$item['content'] = $this->getFullArticle($item['uri']);
+		else
+			$item['content'] = $content;
+
+		if (isset($story['promo_image'])) {
+			switch($story['promo_image']['content_type']) {
+				case 'image': {
+					$item['enclosures'][] = $story['promo_image']['image']['uri'];
+				} break;
+			}
+		}
+
+		if (isset($story['lead_media'])) {
+			$media = $story['lead_media'];
+			switch($media['content_type']) {
+				case 'image': {
+					// Don't add if promo_image was added
+					if (empty($item['enclosures']))
+						$item['enclosures'][] = $media['image']['uri'];
+				} break;
+				case 'image_gallery': {
+					foreach($media['image_gallery']['images'] as $image) {
+						$item['enclosures'][] = $image['uri'];
+					}
+				} break;
+			}
+		}
+
+		$this->items[] = $item;
+	}
+
+	private function getFullArticle($uri) {
+		$html = getSimpleHTMLDOMCached($uri)
+			or returnServerError('Could not load ' . $uri);
+
+		$html = defaultLinkTo($html, $uri);
+
+		$content = '';
+
+		foreach($html->find('
+			.content > .smartbody.text,
+			.content > .section.image script[type="text/json"],
+			.content > .section.image span[itemprop="caption"],
+			.content > .section.inline script[type="text/json"]
+			') as $element) {
+			if ($element->tag === 'script') {
+				$json = json_decode($element->innertext, true);
+				if (isset($json['src'])) {
+					$content .= '<img src="' . $json['src'] . '" width="100%" alt="' . $json['alt'] . '">';
+				} elseif (isset($json['galleryType']) && isset($json['endpoint'])) {
+					$doc = getContents($json['endpoint'])
+						or returnServerError('Could not load ' . $json['endpoint']);
+					$json = json_decode($doc, true);
+					foreach($json['items'] as $item) {
+						$content .= '<p>' . $item['caption'] . '</p>';
+						$content .= '<img src="' . $item['url'] . '" width="100%" alt="' . $item['caption'] . '">';
+					}
+				}
+			} else {
+				$content .= $element->outertext;
+			}
+		}
+
+		return $content;
+	}
+}