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135 lines
4.1 KiB
135 lines
4.1 KiB
<?php
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namespace p3k\XRay\Formats;
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use DOMDocument, DOMXPath;
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use DateTime, DateTimeZone;
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class Facebook extends Format {
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public static function matches_host($url) {
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$host = parse_url($url, PHP_URL_HOST);
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// TODO: match hosts like 'm.facebook.com' and 'mbasic.facebook.com'
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return in_array($host, ['www.facebook.com','facebook.com']);
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}
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public static function matches($url) {
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return self::matches_host($url);
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}
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public static function parse($fbObject, $url) {
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if(is_string($fbObject)) $fbObject = json_decode($fbObject, true);
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$parts = self::extract_url_parts($url);
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if($parts['type'] == 'event') {
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$event = array(
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'type' => 'event',
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'url' => $url,
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'name' => $fbObject['name'],
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'start' => $fbObject['start_time']
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);
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if(isset($fbObject['end_time'])) $event['end'] = $fbObject['end_time'];
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if(isset($fbObject['description'])) $event['summary'] = $fbObject['description'];
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// Is the event linked to a Page?
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if(isset($fbObject['place']['id'])) {
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$card = array(
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'type' => 'card',
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'url' => 'https://facebook.com/'.$fbObject['place']['id'],
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'name' => $fbObject['place']['name']
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);
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if(isset($fbObject['place']['location'])) {
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$location = $fbObject['place']['location'];
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if(isset($location['zip'])) $card['postal-code'] = $location['zip'];
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if(isset($location['city'])) $card['locality'] = $location['city'];
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if(isset($location['state'])) $card['region'] = $location['state'];
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if(isset($location['street'])) $card['street-address'] = $location['street'];
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if(isset($location['country'])) $card['country'] = $location['country'];
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if(isset($location['latitude'])) $card['latitude'] = (string)$location['latitude'];
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if(isset($location['longitude'])) $card['longitude'] = (string)$location['longitude'];
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}
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$event['location'] = $card['url'];
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$event['refs'] = array($card);
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// If we only have a name, use that
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} elseif(isset($fbObject['place']['name'])) {
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$event['location'] = $fbObject['place']['name'];
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}
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return [
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'data' => $event,
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'original' => $fbObject
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];
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}
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}
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public static function fetch($url, $creds) {
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$parts = self::extract_url_parts($url);
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if(!$parts or $parts['api_uri'] == false) {
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return [
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'error' => 'unsupported_url',
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'error_description' => 'This Facebook URL is not supported',
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'error_code' => 400,
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];
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}
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$fb = new \Facebook\Facebook(array(
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'app_id' => $creds['facebook_app_id'],
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'app_secret' => $creds['facebook_app_secret'],
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'default_graph_version' => 'v2.9',
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));
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$fbApp = new \Facebook\FacebookApp($creds['facebook_app_id'], $creds['facebook_app_secret']);
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$token = $fbApp->getAccessToken();
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$request = new \Facebook\FacebookRequest($fbApp, $token, 'GET', $parts['api_uri']);
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try {
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$response = $fb->getClient()->sendRequest($request);
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} catch(\Facebook\Exceptions\FacebookResponseException $e) {
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return [
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'error' => 'facebook_graph_error',
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'error_description' => 'Graph returned an error: ' . $e->getMessage(),
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'error_code' => 400,
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];
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} catch(\Facebook\Exceptions\FacebookSDKException $e) {
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return [
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'error' => 'facebook_sdk_error',
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'error_description' => 'Facebook SDK returned an error: ' . $e->getMessage(),
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'error_code' => 400,
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];
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}
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return [
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'code' => 200,
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'body' => $response->getDecodedBody(),
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'url' => $url
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];
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}
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private static function extract_url_parts($url) {
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$response = false;
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if(preg_match('~https://(.*?).?facebook.com/([^/]+)/posts/(\d+)/?$~', $url, $match)) {
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// TODO: how do we get these?
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// $response['type'] = 'entry';
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// $response['api_uri'] = false;
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} elseif(preg_match('~https://(.*?).?facebook.com/events/(\d+)/?$~', $url, $match)) {
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$response['type'] = 'event';
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$response['api_uri'] = '/'.$match[2];
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}
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return $response;
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}
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}
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