AddFontAwesomeClassesHandler.php

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<?php

namespace Elgg\Icons;

class AddFontAwesomeClassesHandler {
    
    protected $common_icons = [
        'delete-alt' => 'times-circle',
        'delete' => 'times',
        'grid' => 'th',
        'info' => 'info-circle',
        'mail' => 'envelope-regular',
        'refresh' => 'redo',
        'remove' => 'times',
        'settings' => 'wrench',
        'settings-alt' => 'cog',
        'warning' => 'exclamation-triangle',
    ];
    
    protected $brands = [
        '500px',
        'accessible-icon',
        'accusoft',
        'acquisitions-incorporated',
        'adn',
        'adobe',
        'adversal',
        'affiliatetheme',
        'airbnb',
        'algolia',
        'alipay',
        'amazon-pay',
        'amazon',
        'amilia',
        'android',
        'angellist',
        'angrycreative',
        'angular',
        'app-store-ios',
        'app-store',
        'apper',
        'apple-pay',
        'apple',
        'artstation',
        'asymmetrik',
        'atlassian',
        'audible',
        'autoprefixer',
        'avianex',
        'aviato',
        'aws',
        'bandcamp',
        'battle-net',
        'behance-square',
        'behance',
        'bimobject',
        'bitbucket',
        'bitcoin',
        'bity',
        'black-tie',
        'blackberry',
        'blogger-b',
        'blogger',
        'bluetooth-b',
        'bluetooth',
        'bootstrap',
        'btc',
        'buffer',
        'buromobelexperte',
        'buy-n-large',
        'buysellads',
        'canadian-maple-leaf',
        'cc-amazon-pay',
        'cc-amex',
        'cc-apple-pay',
        'cc-diners-club',
        'cc-discover',
        'cc-jcb',
        'cc-mastercard',
        'cc-paypal',
        'cc-stripe',
        'cc-visa',
        'centercode',
        'centos',
        'chrome',
        'chromecast',
        'cloudscale',
        'cloudsmith',
        'cloudversify',
        'codepen',
        'codiepie',
        'confluence',
        'connectdevelop',
        'contao',
        'cotton-bureau',
        'cpanel',
        'creative-commons-by',
        'creative-commons-nc-eu',
        'creative-commons-nc-jp',
        'creative-commons-nc',
        'creative-commons-nd',
        'creative-commons-pd-alt',
        'creative-commons-pd',
        'creative-commons-remix',
        'creative-commons-sa',
        'creative-commons-sampling-plus',
        'creative-commons-sampling',
        'creative-commons-share',
        'creative-commons-zero',
        'creative-commons',
        'critical-role',
        'css3-alt',
        'css3',
        'cuttlefish',
        'd-and-d-beyond',
        'd-and-d',
        'dashcube',
        'delicious',
        'deploydog',
        'deskpro',
        'dev',
        'deviantart',
        'dhl',
        'diaspora',
        'digg',
        'digital-ocean',
        'discord',
        'discourse',
        'dochub',
        'docker',
        'draft2digital',
        'dribbble-square',
        'dribbble',
        'dropbox',
        'drupal',
        'dyalog',
        'earlybirds',
        'ebay',
        'edge',
        'elementor',
        'ello',
        'ember',
        'empire',
        'envira',
        'erlang',
        'ethereum',
        'etsy',
        'evernote',
        'expeditedssl',
        'facebook-f',
        'facebook-messenger',
        'facebook-square',
        'facebook',
        'fantasy-flight-games',
        'fedex',
        'fedora',
        'figma',
        'firefox-browser',
        'firefox',
        'first-order-alt',
        'first-order',
        'firstdraft',
        'flickr',
        'flipboard',
        'fly',
        'font-awesome-alt',
        'font-awesome-flag',
        'font-awesome-logo-full',
        'font-awesome',
        'fonticons-fi',
        'fonticons',
        'fort-awesome-alt',
        'fort-awesome',
        'forumbee',
        'foursquare',
        'free-code-camp',
        'freebsd',
        'fulcrum',
        'galactic-republic',
        'galactic-senate',
        'get-pocket',
        'gg-circle',
        'gg',
        'git-alt',
        'git-square',
        'git',
        'github-alt',
        'github-square',
        'github',
        'gitkraken',
        'gitlab',
        'gitter',
        'glide-g',
        'glide',
        'gofore',
        'goodreads-g',
        'goodreads',
        'google-drive',
        'google-play',
        'google-plus-g',
        'google-plus-square',
        'google-plus',
        'google-wallet',
        'google',
        'gratipay',
        'grav',
        'gripfire',
        'grunt',
        'gulp',
        'hacker-news-square',
        'hacker-news',
        'hackerrank',
        'hips',
        'hire-a-helper',
        'hooli',
        'hornbill',
        'hotjar',
        'houzz',
        'html5',
        'hubspot',
        'ideal',
        'imdb',
        'instagram',
        'intercom',
        'internet-explorer',
        'invision',
        'ioxhost',
        'itch-io',
        'itunes-note',
        'itunes',
        'java',
        'jedi-order',
        'jenkins',
        'jira',
        'joget',
        'joomla',
        'js-square',
        'js',
        'jsfiddle',
        'kaggle',
        'keybase',
        'keycdn',
        'kickstarter-k',
        'kickstarter',
        'korvue',
        'laravel',
        'lastfm-square',
        'lastfm',
        'leanpub',
        'less',
        'line',
        'linkedin-in',
        'linkedin',
        'linode',
        'linux',
        'lyft',
        'magento',
        'mailchimp',
        'mandalorian',
        'markdown',
        'mastodon',
        'maxcdn',
        'mdb',
        'medapps',
        'medium-m',
        'medium',
        'medrt',
        'meetup',
        'megaport',
        'mendeley',
        'microblog',
        'microsoft',
        'mix',
        'mixcloud',
        'mizuni',
        'modx',
        'monero',
        'napster',
        'neos',
        'nimblr',
        'node-js',
        'node',
        'npm',
        'ns8',
        'nutritionix',
        'odnoklassniki-square',
        'odnoklassniki',
        'old-republic',
        'opencart',
        'openid',
        'opera',
        'optin-monster',
        'orcid',
        'osi',
        'page4',
        'pagelines',
        'palfed',
        'patreon',
        'paypal',
        'penny-arcade',
        'periscope',
        'phabricator',
        'phoenix-framework',
        'phoenix-squadron',
        'php',
        'pied-piper-alt',
        'pied-piper-hat',
        'pied-piper-pp',
        'pied-piper-square',
        'pied-piper',
        'pinterest-p',
        'pinterest-square',
        'pinterest',
        'playstation',
        'product-hunt',
        'pushed',
        'python',
        'qq',
        'quinscape',
        'quora',
        'r-project',
        'raspberry-pi',
        'ravelry',
        'react',
        'reacteurope',
        'readme',
        'rebel',
        'red-river',
        'reddit-alien',
        'reddit-square',
        'reddit',
        'redhat',
        'renren',
        'replyd',
        'researchgate',
        'resolving',
        'rev',
        'rocketchat',
        'rockrms',
        'safari',
        'salesforce',
        'sass',
        'schlix',
        'scribd',
        'searchengin',
        'sellcast',
        'sellsy',
        'servicestack',
        'shirtsinbulk',
        'shopware',
        'simplybuilt',
        'sistrix',
        'sith',
        'sketch',
        'skyatlas',
        'skype',
        'slack-hash',
        'slack',
        'slideshare',
        'snapchat-ghost',
        'snapchat-square',
        'snapchat',
        'soundcloud',
        'sourcetree',
        'speakap',
        'speaker-deck',
        'spotify',
        'squarespace',
        'stack-exchange',
        'stack-overflow',
        'stackpath',
        'staylinked',
        'steam-square',
        'steam-symbol',
        'steam',
        'sticker-mule',
        'strava',
        'stripe-s',
        'stripe',
        'studiovinari',
        'stumbleupon-circle',
        'stumbleupon',
        'superpowers',
        'supple',
        'suse',
        'swift',
        'symfony',
        'teamspeak',
        'telegram-plane',
        'telegram',
        'tencent-weibo',
        'the-red-yeti',
        'themeco',
        'themeisle',
        'think-peaks',
        'trade-federation',
        'trello',
        'tripadvisor',
        'tumblr-square',
        'tumblr',
        'twitch',
        'twitter-square',
        'twitter',
        'typo3',
        'uber',
        'ubuntu',
        'uikit',
        'umbraco',
        'uniregistry',
        'unity',
        'untappd',
        'ups',
        'usb',
        'usps',
        'ussunnah',
        'vaadin',
        'viacoin',
        'viadeo-square',
        'viadeo',
        'viber',
        'vimeo-square',
        'vimeo-v',
        'vimeo',
        'vine',
        'vk',
        'vnv',
        'vuejs',
        'waze',
        'weebly',
        'weibo',
        'weixin',
        'whatsapp-square',
        'whatsapp',
        'whmcs',
        'wikipedia-w',
        'windows',
        'wix',
        'wizards-of-the-coast',
        'wolf-pack-battalion',
        'wordpress-simple',
        'wordpress',
        'wpbeginner',
        'wpexplorer',
        'wpforms',
        'wpressr',
        'xbox',
        'xing-square',
        'xing',
        'y-combinator',
        'yahoo',
        'yammer',
        'yandex-international',
        'yandex',
        'yarn',
        'yelp',
        'yoast',
        'youtube-square',
        'youtube',
        'zhihu',
    ];
    
    public function __invoke(\Elgg\Event $event) {
        $vars = $event->getValue();
        
        $classes = elgg_extract_class($vars);
        
        foreach ($classes as $icon_class) {
            if (!preg_match_all('/^elgg-icon-(.+)/i', $icon_class)) {
                continue;
            }
            
            // strip elgg-icon-
            $base_icon = preg_replace('/^elgg-icon-(.+)/i', '$1', $icon_class);
            
            // convert common icons
            $base_icon = elgg_extract($base_icon, $this->common_icons, $base_icon);
            
            // map solid/regular/light iconnames to correct classes
            if (preg_match('/.*-solid$/', $base_icon)) {
                $base_icon = preg_replace('/(.*)-solid$/', '$1', $base_icon);
                $classes[] = 'fas';
            } elseif (preg_match('/.*-regular$/', $base_icon)) {
                $base_icon = preg_replace('/(.*)-regular$/', '$1', $base_icon);
                $classes[] = 'far';
            } elseif (preg_match('/.*-light$/', $base_icon)) {
                // currently light is only available in FontAwesome 5 Pro
                $base_icon = preg_replace('/(.*)-light$/', '$1', $base_icon);
                $classes[] = 'fal';
            } elseif (in_array($base_icon, $this->brands)) {
                $classes[] = 'fab';
            } else {
                $classes[] = 'fas';
            }
    
            $classes[] = "fa-{$base_icon}";
        }

        $vars['class'] = array_unique($classes);
    
        return $vars;
    }
}