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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright Copyright (c) 2022 John Molakvoæ <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author John Molakvoæ <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license GNU AGPL version 3 or any later version  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This program is free software: you can redistribute it and/or modify  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * it under the terms of the GNU Affero General Public License as  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * published by the Free Software Foundation, either version 3 of the  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * License, or (at your option) any later version.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This program is distributed in the hope that it will be useful,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * but WITHOUT ANY WARRANTY; without even the implied warranty of  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * GNU Affero General Public License for more details.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * You should have received a copy of the GNU Affero General Public License  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * along with this program. If not, see <http://www.gnu.org/licenses/>.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace OCA\Theming\Service;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCA\Theming\Themes\DefaultTheme;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\IURLGenerator;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\Util;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                class ThemeInjectionService { | 
            
            
                                                                        
                            
            
                                    
            
            
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                	private IURLGenerator $urlGenerator;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	private ThemesService $themesService;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	private DefaultTheme $defaultTheme;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	public function __construct(IURLGenerator $urlGenerator,  | 
            
            
                                                                        
                            
            
                                    
            
            
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                								ThemesService $themesService,  | 
            
            
                                                                        
                            
            
                                    
            
            
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                								DefaultTheme $defaultTheme) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$this->urlGenerator = $urlGenerator;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$this->themesService = $themesService;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$this->defaultTheme = $defaultTheme;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	public function injectHeaders() { | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$themes = $this->themesService->getThemes();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$defaultTheme = $themes[$this->defaultTheme->getId()];  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$mediaThemes = array_filter($themes, function($theme) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                			// Check if the theme provides a media query  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			return (bool)$theme->getMediaQuery();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		});  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		// Default theme fallback  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$this->addThemeHeader($defaultTheme->getId());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		// Themes applied by media queries  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		foreach($mediaThemes as $theme) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                			$this->addThemeHeader($theme->getId(), true, $theme->getMediaQuery());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		// Themes   | 
            
            
                                                                        
                            
            
                                    
            
            
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                		foreach($this->themesService->getThemes() as $theme) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                			// Ignore default theme as already processed first  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			if ($theme->getId() === $this->defaultTheme->getId()) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                				continue;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                			$this->addThemeHeader($theme->getId(), false);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * Inject theme header into rendered page  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *   | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param string $themeId the theme ID  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param bool $plain request the :root syntax  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param string $media media query to use in the <link> element  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	private function addThemeHeader(string $themeId, bool $plain = true, string $media = null) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$linkToCSS = $this->urlGenerator->linkToRoute('theming.Theming.getThemeStylesheet', [ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'themeId' => $themeId,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'plain' => $plain,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		Util::addHeader('link', [ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'rel' => 'stylesheet',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'media' => $media,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'href' => $linkToCSS,  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                			'class' => 'theme'  | 
            
            
                                                                        
                                                                
            
                                    
            
            
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                		]);  | 
            
            
                                                                        
                                                                
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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