extranet/library/Application/Controller/Plugin/Theme.php

<?php
class Application_Controller_Plugin_Theme extends Zend_Controller_Plugin_Abstract
{
    public function preDispatch(Zend_Controller_Request_Abstract $request)
    {
        if (Zend_Registry::isRegistered('logger')) {
            $logger = Zend_Registry::get('logger');
        }

        $logger->info('PLUGIN THEME - START');

        $auth = Zend_Auth::getInstance();
        $theme = 'default'; //$theme = 'mobile';
        if ( $auth->hasIdentity() ) {
            $theme = !empty($auth->getIdentity()->theme) ? $auth->getIdentity()->theme : 'default';
        }

        $module = $request->getModuleName();
        $controller = $request->getControllerName();
        $action = $request->getActionName();

        //Sauvegarde des paramètres du themes pour gérer les scripts et styles à utiliser
        $paramsTheme = new stdClass();
        $paramsTheme->name = $theme;
        $paramsTheme->pathStyle = '/themes/'.$theme.'/styles';
        $paramsTheme->pathScript = '/themes/'.$theme.'/scripts';
        $paramsTheme->pathImg = '/themes/'.$theme.'/images';
        Zend_Registry::set('theme', $paramsTheme);

        //Load bootstrap
        $bootstrap = Zend_Controller_Front::getInstance()->getParam('bootstrap');

        //Get useragent and device informations
        $userAgent = $bootstrap->getResource('useragent');
        $device = $userAgent->getDevice();

        //Module default de l'application
        $layoutPath = APPLICATION_PATH . '/layouts/' . $theme;
        $helperPath = APPLICATION_PATH . '/layouts/helpers';
        $viewPath = APPLICATION_PATH . '/modules/'.$module.'/views/' . $theme;

        //Override path for view and layout
        $view = $bootstrap->bootstrap('View')->getResource('View');
        $view->setBasePath($viewPath);
        $view->setHelperPath($helperPath);
        $layout = $bootstrap->bootstrap('Layout')->getResource('Layout');
        $layout->setLayout('layout');
        $layout->setLayoutPath($layoutPath);

        // DNS Prefetch
        $view->headLink(array('rel'=>'dns-prefetch', 'href'=> '//'.$request->getHttpHost()));

        //Load default style and javascript files for the selected theme
        switch ( $theme ) {
            case 'default':
            default:

                $view->doctype('HTML5');

                $view->headMeta()
                ->appendHttpEquiv('Content-Type', 'text/html; charset=UTF-8')
                ->appendHttpEquiv('Content-Language', 'fr-FR');

                //Favicon - Touch icon for iOS 2.0+ and Android 2.1+
                $view->headLink(array(
                    'rel' => 'apple-touch-icon-precomposed',
                    'href' => '/favicon-152.png'
                ));
                //Favicon - targeted to any additional png size
                $view->headLink(array(
                    'rel' => 'icon',
                    'type' => 'image/png',
                    'href' => '/favicon-32.png'
                ));
                $view->headLink(array(
                    'rel' => 'shortcut icon',
                    'type' => 'image/x-icon',
                    'href' => '/favicon.ico'
                ));

                $UserLogin = false;
                if ( $controller == 'user' && ( $action == 'login' || $action == 'logout' ) ) {
                    $UserLogin = true;
                }

                if ( $controller == 'auth' ) {
                    $UserLogin = true;
                }

                /**
                 * ===> Standard Styles
                 */
                if ( $UserLogin ) {
                    $view->headLink()
                    ->appendStylesheet('/libs/bootstrap-3.3.7/css/bootstrap.min.css', 'all')
                    ->appendStylesheet('/themes/default/styles/user-login.css', 'all');
                } else {
                    $view->headLink()->appendStylesheet($paramsTheme->pathStyle.'/main.css', 'all');
                }

                $view->headLink()
                ->appendStylesheet('/libs/ui-1.12.1/themes/smoothness/jquery-ui.min.css', 'all')
                ->appendStylesheet('/libs/qtip/jquery.qtip.min.css', 'all')
                ->appendStylesheet('/libs/font-awesome-4.7.0/css/font-awesome.min.css', 'all');

                /**
                 * ===> Standard Javascript
                 */
                if ( $UserLogin ) {
                    $view->headScript()
                    ->appendFile('/libs/html5shiv.min.js', 'text/javascript', array('conditional' => 'lt IE 9'))
                    ->appendFile('/libs/respond.min.js', 'text/javascript', array('conditional' => 'lt IE 9'))
                    ->appendFile('/libs/jquery-1.12.4.min.js', 'text/javascript')
                    ->appendFile('/libs/jquery.placeholder.min.js', 'text/javascript', array('conditional' => 'lt IE 9'))
                    ->appendFile('/libs/bootstrap-3.3.7/js/bootstrap.min.js', 'text/javascript');
                } else {
                    $view->headScript()
                    ->appendFile('/libs/jquery-1.12.4.min.js', 'text/javascript');
                }


                $view->headScript()
                ->appendFile('/libs/ui-1.12.1/jquery-ui.min.js', 'text/javascript')
                ->appendFile('/libs/ui-1.12.1/datepicker-fr.js', 'text/javascript');


                if ( ! $UserLogin ) {
                    $view->headScript()
                    ->appendFile('/libs/qtip/jquery.qtip.min.js', 'text/javascript')
                    ->appendFile($paramsTheme->pathScript.'/script.js', 'text/javascript');
                }

                break;
        }

        $logger->info('PLUGIN THEME - STOP');
    }
}