From 8770c87389ffde62551e4a1a8923ded1c95b077a Mon Sep 17 00:00:00 2001
From: teromene <teromene@teromene.fr>
Date: Sat, 5 May 2018 13:00:59 +0100
Subject: [PATCH] Added support for stories in InstagramBridge. Closes #665
 Renamed parameters as stories are only available in user mode. Use a regex
 instead of HTML parsing to extract the JSON, as it is way faster.

---
 bridges/InstagramBridge.php | 105 +++++++++++++++++++++++-------------
 1 file changed, 69 insertions(+), 36 deletions(-)

diff --git a/bridges/InstagramBridge.php b/bridges/InstagramBridge.php
index e34e922..b0b1d17 100644
--- a/bridges/InstagramBridge.php
+++ b/bridges/InstagramBridge.php
@@ -12,14 +12,15 @@ class InstagramBridge extends BridgeAbstract {
 				'name' => 'username',
 				'required' => true
 			),
-			'media_type' => array(
+			'media_type_u' => array(
 				'name' => 'Media type',
 				'type' => 'list',
 				'required' => false,
 				'values' => array(
-					'Both' => 'all',
+					'All' => 'all',
+					'Story' => 'story',
 					'Video' => 'video',
-					'Picture' => 'picture'
+					'Picture' => 'picture',
 				),
 				'defaultValue' => 'all'
 			)
@@ -29,7 +30,7 @@ class InstagramBridge extends BridgeAbstract {
 				'name' => 'hashtag',
 				'required' => true
 			),
-			'media_type' => array(
+			'media_type_h' => array(
 				'name' => 'Media type',
 				'type' => 'list',
 				'required' => false,
@@ -44,27 +45,8 @@ class InstagramBridge extends BridgeAbstract {
 	);
 
 	public function collectData(){
-		$html = getSimpleHTMLDOM($this->getURI())
-			or returnServerError('Could not request Instagram.');
 
-		$innertext = null;
-
-		foreach($html->find('script') as $script) {
-			if('' === $script->innertext) {
-				continue;
-			}
-
-			$pos = strpos(trim($script->innertext), 'window._sharedData');
-			if(0 !== $pos) {
-				continue;
-			}
-
-			$innertext = $script->innertext;
-			break;
-		}
-
-		$json = trim(substr($innertext, $pos + 18), ' =;');
-		$data = json_decode($json);
+		$data = $this->getInstagramJSON($this->getURI());
 
 		if(!is_null($this->getInput('u'))) {
 			$userMedia = $data->entry_data->ProfilePage[0]->graphql->user->edge_owner_to_timeline_media->edges;
@@ -74,32 +56,83 @@ class InstagramBridge extends BridgeAbstract {
 
 		foreach($userMedia as $media) {
 			$media = $media->node;
-			// Check media type
-			switch($this->getInput('media_type')) {
-				case 'all': break;
-				case 'video':
-					if($media->is_video === false) continue 2;
-					break;
-				case 'picture':
-					if($media->is_video === true) continue 2;
-					break;
-				default: break;
+
+			if(!is_null($this->getInput('u'))) {
+				switch($this->getInput('media_type_u')) {
+					case 'all': break;
+					case 'video':
+						if($media->__typename != 'GraphVideo') continue 2;
+						break;
+					case 'picture':
+						if($media->__typename != 'GraphImage') continue 2;
+						break;
+					case 'story':
+						if($media->__typename != 'GraphSidecar') continue 2;
+						break;
+					default: break;
+				}
+			} else {
+				if($this->getInput('media_type_h') == 'video' && !$media->is_video) continue;
 			}
 
 			$item = array();
 			$item['uri'] = self::URI . 'p/' . $media->shortcode . '/';
-			$item['content'] = '<img src="' . htmlentities($media->display_url) . '" />';
+
 			if (isset($media->edge_media_to_caption->edges[0]->node->text)) {
 				$item['title'] = $media->edge_media_to_caption->edges[0]->node->text;
 			} else {
 				$item['title'] = basename($media->display_url);
 			}
+
+			if(!is_null($this->getInput('u')) && $media->__typename == 'GraphSidecar') {
+				$data = $this->getInstagramStory($item['uri']);
+				$item['content'] = $data[0];
+				$item['enclosures'] = $data[1];
+			} else {
+				$item['content'] = '<img src="' . htmlentities($media->display_url) . '" alt="'. $item["title"] . '" />';
+				$item['enclosures'] = array($media->display_url);
+			}
+
 			$item['timestamp'] = $media->taken_at_timestamp;
-			$item['enclosures'] = array($media->display_url);
+
 			$this->items[] = $item;
 		}
 	}
 
+	protected function getInstagramStory($uri) {
+
+		$data = $this->getInstagramJSON($uri);
+		$mediaInfo = $data->entry_data->PostPage[0]->graphql->shortcode_media;
+
+		//Process the first element, that isn't in the node graph
+		$caption = $mediaInfo->edge_media_to_caption->edges[0]->node->text;
+
+		$enclosures = [$mediaInfo->display_url];
+		$content = '<img src="' . htmlentities($mediaInfo->display_url) . '" alt="'. $caption . '" />';
+
+		foreach($mediaInfo->edge_sidecar_to_children->edges as $media) {
+
+			$content .= '<img src="' . htmlentities($media->node->display_url) . '" alt="'. $caption . '" />';
+			$enclosures[] = $media->node->display_url;
+
+		}
+
+		return [$content, $enclosures];
+
+	}
+
+	protected function getInstagramJSON($uri) {
+
+		$html = getContents($uri)
+			or returnServerError('Could not request Instagram.');
+		$scriptRegex = '/window\._sharedData = (.*);<\/script>/';
+
+		preg_match($scriptRegex, $html, $matches, PREG_OFFSET_CAPTURE, 0);
+
+		return json_decode($matches[1][0]);
+
+	}
+
 	public function getName(){
 		if(!is_null($this->getInput('u'))) {
 			return $this->getInput('u') . ' - Instagram Bridge';