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124 lines
3.2 KiB
PHP
124 lines
3.2 KiB
PHP
<?php
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/**
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* SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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namespace OCA\Theming\Service;
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use OCA\Theming\ITheme;
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use OCA\Theming\Themes\DefaultTheme;
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use OCA\Theming\Util;
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use OCP\IConfig;
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use OCP\IURLGenerator;
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use OCP\IUserSession;
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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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private Util $util;
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private IConfig $config;
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private ?string $userId;
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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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Util $util,
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IConfig $config,
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IUserSession $userSession) {
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$this->urlGenerator = $urlGenerator;
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$this->themesService = $themesService;
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$this->defaultTheme = $defaultTheme;
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$this->util = $util;
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$this->config = $config;
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if ($userSession->getUser() !== null) {
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$this->userId = $userSession->getUser()->getUID();
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} else {
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$this->userId = null;
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}
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}
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public function injectHeaders(): void {
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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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$this->addThemeHeaders($defaultTheme);
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// Themes applied by media queries
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foreach($mediaThemes as $theme) {
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$this->addThemeHeaders($theme, 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->addThemeHeaders($theme, false);
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}
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// Meta headers
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$this->addThemeMetaHeaders($themes);
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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 ITheme $theme the theme
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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 addThemeHeaders(ITheme $theme, bool $plain = true, ?string $media = null): void {
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$linkToCSS = $this->urlGenerator->linkToRoute('theming.Theming.getThemeStylesheet', [
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'themeId' => $theme->getId(),
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'plain' => $plain,
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'v' => $this->util->getCacheBuster(),
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]);
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\OCP\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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* Inject meta headers into rendered page
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*
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* @param ITheme[] $themes the theme
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*/
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private function addThemeMetaHeaders(array $themes): void {
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$metaHeaders = [];
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// Meta headers
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foreach($this->themesService->getThemes() as $theme) {
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if (!empty($theme->getMeta())) {
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foreach($theme->getMeta() as $meta) {
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if (!isset($meta['name']) || !isset($meta['content'])) {
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continue;
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}
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if (!isset($metaHeaders[$meta['name']])) {
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$metaHeaders[$meta['name']] = [];
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}
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$metaHeaders[$meta['name']][] = $meta['content'];
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}
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}
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}
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foreach($metaHeaders as $name => $content) {
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\OCP\Util::addHeader('meta', [
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'name' => $name,
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'content' => join(' ', array_unique($content)),
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]);
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}
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}
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}
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