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- <?php
- namespace XRay\Formats;
-
- use DOMDocument, DOMXPath;
- use DateTime, DateTimeZone;
- use Parse;
-
- class Instagram {
-
- public static function parse($html, $url, $http) {
-
- $photoData = self::_extractPhotoDataFromPhotoPage($html);
-
- if(!$photoData)
- return false;
-
- // Start building the h-entry
- $entry = array(
- 'type' => 'entry',
- 'url' => $url,
- 'author' => [
- 'type' => 'card',
- 'name' => null,
- 'photo' => null,
- 'url' => null
- ]
- );
-
- $profiles = [];
-
- // Fetch profile info for this user
- $username = $photoData['owner']['username'];
- $profile = self::_getInstagramProfile($username, $http);
- if($profile) {
- $entry['author'] = self::_buildHCardFromInstagramProfile($profile);
- $profiles[] = $profile;
- }
-
- // Content and hashtags
- if(isset($photoData['caption'])) {
- if(preg_match_all('/#([a-z0-9_-]+)/i', $photoData['caption'], $matches)) {
- $entry['category'] = [];
- foreach($matches[1] as $match) {
- $entry['category'][] = $match;
- }
- }
-
- $entry['content'] = [
- 'text' => $photoData['caption']
- ];
- }
-
- // Include the photo/video media URLs
- // (Always return arrays)
- $entry['photo'] = [$photoData['display_src']];
-
- if(array_key_exists('is_video', $photoData) && $photoData['is_video']) {
- $entry['video'] = [$photoData['video_url']];
- }
-
- $refs = [];
-
- // Find person tags and fetch user profiles
- if(array_key_exists('usertags', $photoData) && $photoData['usertags']['nodes']) {
- if(!isset($entry['category'])) $entry['category'] = [];
-
- foreach($photoData['usertags']['nodes'] as $tag) {
- $profile = self::_getInstagramProfile($tag['user']['username'], $http);
- if($profile) {
- $card = self::_buildHCardFromInstagramProfile($profile);
- $entry['category'][] = $card['url'];
- $refs[$card['url']] = $card;
- $profiles[] = $profile;
- }
- }
- }
-
- // Published date
- $published = DateTime::createFromFormat('U', $photoData['date']);
-
- // Include venue data
- $locations = [];
- if($photoData['location']) {
- $location = self::_getInstagramLocation($photoData['location']['id'], $http);
- if($location) {
- $entry['location'] = [$location['url']];
- $refs[$location['url']] = $location;
- $locations[] = $location;
-
- // Look up timezone
- if($location['latitude']) {
- $tz = \p3k\Timezone::timezone_for_location($location['latitude'], $location['longitude']);
- if($tz) {
- $published->setTimeZone(new DateTimeZone($tz));
- }
- }
- }
- }
-
- $entry['published'] = $published->format('c');
-
- $response = [
- 'data' => $entry
- ];
-
- if(count($refs)) {
- $response['refs'] = $refs;
- }
-
- return [$response, [
- 'photo' => $photoData,
- 'profiles' => $profiles,
- 'locations' => $locations
- ]];
- }
-
- private static function _buildHCardFromInstagramProfile($profile) {
- if(!$profile) return false;
-
- $author = [
- 'type' => 'card'
- ];
-
- if($profile['full_name'])
- $author['name'] = $profile['full_name'];
- else
- $author['name'] = $profile['username'];
-
- if(isset($profile['external_url']) && $profile['external_url'])
- $author['url'] = $profile['external_url'];
- else
- $author['url'] = 'https://www.instagram.com/' . $username;
-
- if(isset($profile['profile_pic_url_hd']))
- $author['photo'] = $profile['profile_pic_url_hd'];
- else
- $author['photo'] = $profile['profile_pic_url'];
-
- return $author;
- }
-
- private static function _getInstagramProfile($username, $http) {
- $response = $http->get('https://www.instagram.com/'.$username.'/?__a=1');
-
- if(!$response['error']) {
- $profile = @json_decode($response['body'], true);
- if($profile && array_key_exists('user', $profile)) {
- $user = $profile['user'];
- return $user;
- }
- }
- return null;
- }
-
- private static function _getInstagramLocation($id, $http) {
- $igURL = 'https://www.instagram.com/explore/locations/'.$id.'/';
- $response = $http->get($igURL);
- if($response['body']) {
- $data = self::_extractVenueDataFromVenuePage($response['body']);
- if($data) {
- return [
- 'type' => 'card',
- 'name' => $data['name'],
- 'url' => $igURL,
- 'latitude' => $data['lat'],
- 'longitude' => $data['lng'],
- ];
- }
- }
- return null;
- }
-
- private static function _extractPhotoDataFromPhotoPage($html) {
- $data = self::_extractIGData($html);
-
- if($data && is_array($data) && array_key_exists('entry_data', $data)) {
- if(is_array($data['entry_data']) && array_key_exists('PostPage', $data['entry_data'])) {
- $post = $data['entry_data']['PostPage'];
- if(is_array($post) && array_key_exists(0, $post) && array_key_exists('media', $post[0])) {
- $media = $post[0]['media'];
-
- return $media;
- }
- }
- }
-
- return null;
- }
-
- private static function _extractVenueDataFromVenuePage($html) {
- $data = self::_extractIGData($html);
-
- if($data && is_array($data) && array_key_exists('entry_data', $data)) {
- if(is_array($data['entry_data']) && array_key_exists('LocationsPage', $data['entry_data'])) {
- $data = $data['entry_data']['LocationsPage'];
- if(is_array($data) && array_key_exists(0, $data) && array_key_exists('location', $data[0])) {
- $location = $data[0]['location'];
-
- # we don't need these and they're huge, so drop them now
- unset($location['media']);
- unset($location['top_posts']);
-
- return $location;
- }
- }
- }
-
- return null;
- }
-
- private static function _extractIGData($html) {
- $doc = new DOMDocument();
- @$doc->loadHTML($html);
-
- if(!$doc) {
- return null;
- }
-
- $xpath = new DOMXPath($doc);
-
- $data = null;
-
- foreach($xpath->query('//script') as $script) {
- if(preg_match('/window\._sharedData = ({.+});/', $script->textContent, $match)) {
- $data = json_decode($match[1], true);
- }
- }
-
- return $data;
- }
-
- }
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