migrate therinaldos.com data

wedding-pics/apps/theming/lib/Service/BackgroundService.php

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+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2020 Julius Härtl <jus@bitgrid.net>
+ *
+ * @author Jan C. Borchardt <hey@jancborchardt.net>
+ * @author Julius Härtl <jus@bitgrid.net>
+ * @author Christopher Ng <chrng8@gmail.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+namespace OCA\Theming\Service;
+
+use InvalidArgumentException;
+use OC\User\NoUserException;
+use OCA\Theming\AppInfo\Application;
+use OCA\Theming\ThemingDefaults;
+use OCP\Files\File;
+use OCP\Files\IAppData;
+use OCP\Files\IRootFolder;
+use OCP\Files\NotFoundException;
+use OCP\Files\NotPermittedException;
+use OCP\Files\SimpleFS\ISimpleFile;
+use OCP\Files\SimpleFS\ISimpleFolder;
+use OCP\IConfig;
+use OCP\Lock\LockedException;
+use OCP\PreConditionNotMetException;
+
+class BackgroundService {
+	// true when the background is bright and need dark icons
+	public const THEMING_MODE_DARK = 'dark';
+	public const DEFAULT_COLOR = '#0082c9';
+	public const DEFAULT_ACCESSIBLE_COLOR = '#00679e';
+
+	public const BACKGROUND_SHIPPED = 'shipped';
+	public const BACKGROUND_CUSTOM = 'custom';
+	public const BACKGROUND_DEFAULT = 'default';
+	public const BACKGROUND_DISABLED = 'disabled';
+
+	public const DEFAULT_BACKGROUND_IMAGE = 'kamil-porembinski-clouds.jpg';
+	public const SHIPPED_BACKGROUNDS = [
+		'hannah-maclean-soft-floral.jpg' => [
+			'attribution' => 'Soft floral (Hannah MacLean, CC0)',
+			'description' => 'Abstract background picture in yellow and white color whith a flower on it',
+			'attribution_url' => 'https://stocksnap.io/photo/soft-floral-XOYWCCW5PA',
+			'theming' => self::THEMING_MODE_DARK,
+			'primary_color' => '#D8A06C',
+		],
+		'ted-moravec-morning-fog.jpg' => [
+			'attribution' => 'Morning fog (Ted Moravec, Public Domain)',
+			'description' => 'Background picture of a forest shrouded in fog',
+			'attribution_url' => 'https://flickr.com/photos/tmoravec/52392410261',
+			'theming' => self::THEMING_MODE_DARK,
+			'primary_color' => '#38A084',
+		],
+		'stefanus-martanto-setyo-husodo-underwater-ocean.jpg' => [
+			'attribution' => 'Underwater ocean (Stefanus Martanto Setyo Husodo, CC0)',
+			'description' => 'Background picture of an underwater ocean',
+			'attribution_url' => 'https://stocksnap.io/photo/underwater-ocean-TJA9LBH4WS',
+			'primary_color' => '#04577e',
+		],
+		'zoltan-voros-rhythm-and-blues.jpg' => [
+			'attribution' => 'Rhythm and blues (Zoltán Vörös, CC BY)',
+			'description' => 'Abstract background picture of sand dunes during night',
+			'attribution_url' => 'https://flickr.com/photos/v923z/51634409289/',
+			'primary_color' => '#1c243c',
+		],
+		'anatoly-mikhaltsov-butterfly-wing-scale.jpg' => [
+			'attribution' => 'Butterfly wing scale (Anatoly Mikhaltsov, CC BY-SA)',
+			'description' => 'Background picture of a red-ish butterfly wing under microscope',
+			'attribution_url' => 'https://commons.wikimedia.org/wiki/File:%D0%A7%D0%B5%D1%88%D1%83%D0%B9%D0%BA%D0%B8_%D0%BA%D1%80%D1%8B%D0%BB%D0%B0_%D0%B1%D0%B0%D0%B1%D0%BE%D1%87%D0%BA%D0%B8.jpg',
+			'primary_color' => '#a53c17',
+		],
+		'bernie-cetonia-aurata-take-off-composition.jpg' => [
+			'attribution' => 'Cetonia aurata take off composition (Bernie, Public Domain)',
+			'description' => 'Montage of a cetonia aurata bug that takes off with white background',
+			'attribution_url' => 'https://commons.wikimedia.org/wiki/File:Cetonia_aurata_take_off_composition_05172009.jpg',
+			'theming' => self::THEMING_MODE_DARK,
+			'primary_color' => '#869171',
+		],
+		'dejan-krsmanovic-ribbed-red-metal.jpg' => [
+			'attribution' => 'Ribbed red metal (Dejan Krsmanovic, CC BY)',
+			'description' => 'Abstract background picture of red ribbed metal with two horizontal white elements on top of it',
+			'attribution_url' => 'https://www.flickr.com/photos/dejankrsmanovic/42971456774/',
+			'primary_color' => '#9c4236',
+		],
+		'eduardo-neves-pedra-azul.jpg' => [
+			'attribution' => 'Pedra azul milky way (Eduardo Neves, CC BY-SA)',
+			'description' => 'Background picture of the milky way during night with a mountain in front of it',
+			'attribution_url' => 'https://commons.wikimedia.org/wiki/File:Pedra_Azul_Milky_Way.jpg',
+			'primary_color' => '#4f6071',
+		],
+		'european-space-agency-barents-bloom.jpg' => [
+			'attribution' => 'Barents bloom (European Space Agency, CC BY-SA)',
+			'description' => 'Abstract background picture of blooming barents in blue and green colors',
+			'attribution_url' => 'https://www.esa.int/ESA_Multimedia/Images/2016/08/Barents_bloom',
+			'primary_color' => '#396475',
+		],
+		'hannes-fritz-flippity-floppity.jpg' => [
+			'attribution' => 'Flippity floppity (Hannes Fritz, CC BY-SA)',
+			'description' => 'Abstract background picture of many pairs of flip flops hanging on a wall in multiple colors',
+			'attribution_url' => 'http://hannes.photos/flippity-floppity',
+			'primary_color' => '#98415a',
+		],
+		'hannes-fritz-roulette.jpg' => [
+			'attribution' => 'Roulette (Hannes Fritz, CC BY-SA)',
+			'description' => 'Background picture of a rotating giant wheel during night',
+			'attribution_url' => 'http://hannes.photos/roulette',
+			'primary_color' => '#845334',
+		],
+		'hannes-fritz-sea-spray.jpg' => [
+			'attribution' => 'Sea spray (Hannes Fritz, CC BY-SA)',
+			'description' => 'Background picture of a stone coast with fog and sea behind it',
+			'attribution_url' => 'http://hannes.photos/sea-spray',
+			'primary_color' => '#4f6071',
+		],
+		'kamil-porembinski-clouds.jpg' => [
+			'attribution' => 'Clouds (Kamil Porembiński, CC BY-SA)',
+			'description' => 'Background picture of white clouds on in front of a blue sky',
+			'attribution_url' => 'https://www.flickr.com/photos/paszczak000/8715851521/',
+			'primary_color' => self::DEFAULT_COLOR,
+		],
+		'bernard-spragg-new-zealand-fern.jpg' => [
+			'attribution' => 'New zealand fern (Bernard Spragg, CC0)',
+			'description' => 'Abstract background picture of fern leafes',
+			'attribution_url' => 'https://commons.wikimedia.org/wiki/File:NZ_Fern.(Blechnum_chambersii)_(11263534936).jpg',
+			'primary_color' => '#316b26',
+		],
+		'rawpixel-pink-tapioca-bubbles.jpg' => [
+			'attribution' => 'Pink tapioca bubbles (Rawpixel, CC BY)',
+			'description' => 'Abstract background picture of pink tapioca bubbles',
+			'attribution_url' => 'https://www.flickr.com/photos/byrawpixel/27665140298/in/photostream/',
+			'theming' => self::THEMING_MODE_DARK,
+			'primary_color' => '#b17ab4',
+		],
+		'nasa-waxing-crescent-moon.jpg' => [
+			'attribution' => 'Waxing crescent moon (NASA, Public Domain)',
+			'description' => 'Background picture of glowing earth in foreground and moon in the background',
+			'attribution_url' => 'https://www.nasa.gov/image-feature/a-waxing-crescent-moon',
+			'primary_color' => '#005ac1',
+		],
+		'tommy-chau-already.jpg' => [
+			'attribution' => 'Cityscape (Tommy Chau, CC BY)',
+			'description' => 'Background picture of a skyscraper city during night',
+			'attribution_url' => 'https://www.flickr.com/photos/90975693@N05/16910999368',
+			'primary_color' => '#6a2af4',
+		],
+		'tommy-chau-lion-rock-hill.jpg' => [
+			'attribution' => 'Lion rock hill (Tommy Chau, CC BY)',
+			'description' => 'Background picture of mountains during sunset or sunrise',
+			'attribution_url' => 'https://www.flickr.com/photos/90975693@N05/17136440246',
+			'theming' => self::THEMING_MODE_DARK,
+			'primary_color' => '#c074a9',
+		],
+		'lali-masriera-yellow-bricks.jpg' => [
+			'attribution' => 'Yellow bricks (Lali Masriera, CC BY)',
+			'description' => 'Background picture of yellow bricks with some yellow tubes',
+			'attribution_url' => 'https://www.flickr.com/photos/visualpanic/3982464447',
+			'theming' => self::THEMING_MODE_DARK,
+			'primary_color' => '#bc8210',
+		],
+	];
+
+	private IRootFolder $rootFolder;
+	private IAppData $appData;
+	private IConfig $config;
+	private string $userId;
+	private ThemingDefaults $themingDefaults;
+
+	public function __construct(IRootFolder $rootFolder,
+		IAppData $appData,
+		IConfig $config,
+		?string $userId,
+		ThemingDefaults $themingDefaults) {
+		if ($userId === null) {
+			return;
+		}
+
+		$this->rootFolder = $rootFolder;
+		$this->config = $config;
+		$this->userId = $userId;
+		$this->appData = $appData;
+		$this->themingDefaults = $themingDefaults;
+	}
+
+	public function setDefaultBackground(): void {
+		$this->config->deleteUserValue($this->userId, Application::APP_ID, 'background_image');
+		$this->config->deleteUserValue($this->userId, Application::APP_ID, 'background_color');
+	}
+
+	/**
+	 * @param $path
+	 * @throws NotFoundException
+	 * @throws NotPermittedException
+	 * @throws LockedException
+	 * @throws PreConditionNotMetException
+	 * @throws NoUserException
+	 */
+	public function setFileBackground($path): void {
+		$this->config->setUserValue($this->userId, Application::APP_ID, 'background_image', self::BACKGROUND_CUSTOM);
+		$userFolder = $this->rootFolder->getUserFolder($this->userId);
+
+		/** @var File $file */
+		$file = $userFolder->get($path);
+		$image = new \OCP\Image();
+
+		if ($image->loadFromFileHandle($file->fopen('r')) === false) {
+			throw new InvalidArgumentException('Invalid image file');
+		}
+
+		$this->getAppDataFolder()->newFile('background.jpg', $file->fopen('r'));
+	}
+
+	public function setShippedBackground($fileName): void {
+		if (!array_key_exists($fileName, self::SHIPPED_BACKGROUNDS)) {
+			throw new InvalidArgumentException('The given file name is invalid');
+		}
+		$this->config->setUserValue($this->userId, Application::APP_ID, 'background_image', $fileName);
+		$this->setColorBackground(self::SHIPPED_BACKGROUNDS[$fileName]['primary_color']);
+	}
+
+	public function setColorBackground(string $color): void {
+		if (!preg_match('/^#([0-9a-f]{3}|[0-9a-f]{6})$/i', $color)) {
+			throw new InvalidArgumentException('The given color is invalid');
+		}
+		$this->config->setUserValue($this->userId, Application::APP_ID, 'background_color', $color);
+	}
+
+	public function deleteBackgroundImage(): void {
+		$this->config->setUserValue($this->userId, Application::APP_ID, 'background_image', self::BACKGROUND_DISABLED);
+	}
+
+	public function getBackground(): ?ISimpleFile {
+		$background = $this->config->getUserValue($this->userId, Application::APP_ID, 'background_image', self::BACKGROUND_DEFAULT);
+		if ($background === self::BACKGROUND_CUSTOM) {
+			try {
+				return $this->getAppDataFolder()->getFile('background.jpg');
+			} catch (NotFoundException | NotPermittedException $e) {
+				return null;
+			}
+		}
+		return null;
+	}
+
+	/**
+	 * Storing the data in appdata/theming/users/USERID
+	 *
+	 * @return ISimpleFolder
+	 * @throws NotPermittedException
+	 */
+	private function getAppDataFolder(): ISimpleFolder {
+		try {
+			$rootFolder = $this->appData->getFolder('users');
+		} catch (NotFoundException $e) {
+			$rootFolder = $this->appData->newFolder('users');
+		}
+		try {
+			return $rootFolder->getFolder($this->userId);
+		} catch (NotFoundException $e) {
+			return $rootFolder->newFolder($this->userId);
+		}
+	}
+}

wedding-pics/apps/theming/lib/Service/JSDataService.php

@@ -0,0 +1,65 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2020, Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @author Julien Veyssier <eneiluj@posteo.net>
+ * @author Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+namespace OCA\Theming\Service;
+
+use OCA\Theming\ThemingDefaults;
+use OCA\Theming\Util;
+use OCP\IConfig;
+
+class JSDataService implements \JsonSerializable {
+	private ThemingDefaults $themingDefaults;
+	private Util $util;
+	private IConfig $appConfig;
+	private ThemesService $themesService;
+
+	public function __construct(
+		ThemingDefaults $themingDefaults,
+		Util $util,
+		IConfig $appConfig,
+		ThemesService $themesService
+	) {
+		$this->themingDefaults = $themingDefaults;
+		$this->util = $util;
+		$this->appConfig = $appConfig;
+		$this->themesService = $themesService;
+	}
+
+	public function jsonSerialize(): array {
+		return [
+			'name' => $this->themingDefaults->getName(),
+			'url' => $this->themingDefaults->getBaseUrl(),
+			'slogan' => $this->themingDefaults->getSlogan(),
+			'color' => $this->themingDefaults->getColorPrimary(),
+			'defaultColor' => $this->themingDefaults->getDefaultColorPrimary(),
+			'imprintUrl' => $this->themingDefaults->getImprintUrl(),
+			'privacyUrl' => $this->themingDefaults->getPrivacyUrl(),
+			'inverted' => $this->util->invertTextColor($this->themingDefaults->getColorPrimary()),
+			'cacheBuster' => $this->util->getCacheBuster(),
+			'enabledThemes' => $this->themesService->getEnabledThemes(),
+		];
+	}
+}

wedding-pics/apps/theming/lib/Service/ThemeInjectionService.php

@@ -0,0 +1,104 @@
+<?php
+/**
+ * @copyright Copyright (c) 2022 John Molakvoæ <skjnldsv@protonmail.com>
+ *
+ * @author John Molakvoæ <skjnldsv@protonmail.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+namespace OCA\Theming\Service;
+
+use OCA\Theming\Themes\DefaultTheme;
+use OCA\Theming\Util;
+use OCP\IConfig;
+use OCP\IURLGenerator;
+use OCP\IUserSession;
+
+class ThemeInjectionService {
+
+	private IURLGenerator $urlGenerator;
+	private ThemesService $themesService;
+	private DefaultTheme $defaultTheme;
+	private Util $util;
+	private IConfig $config;
+	private ?string $userId;
+
+	public function __construct(IURLGenerator $urlGenerator,
+		ThemesService $themesService,
+		DefaultTheme $defaultTheme,
+		Util $util,
+		IConfig $config,
+		IUserSession $userSession) {
+		$this->urlGenerator = $urlGenerator;
+		$this->themesService = $themesService;
+		$this->defaultTheme = $defaultTheme;
+		$this->util = $util;
+		$this->config = $config;
+		if ($userSession->getUser() !== null) {
+			$this->userId = $userSession->getUser()->getUID();
+		} else {
+			$this->userId = null;
+		}
+	}
+
+	public function injectHeaders() {
+		$themes = $this->themesService->getThemes();
+		$defaultTheme = $themes[$this->defaultTheme->getId()];
+		$mediaThemes = array_filter($themes, function ($theme) {
+			// Check if the theme provides a media query
+			return (bool)$theme->getMediaQuery();
+		});
+
+		// Default theme fallback
+		$this->addThemeHeader($defaultTheme->getId());
+
+		// Themes applied by media queries
+		foreach($mediaThemes as $theme) {
+			$this->addThemeHeader($theme->getId(), true, $theme->getMediaQuery());
+		}
+
+		// Themes
+		foreach($this->themesService->getThemes() as $theme) {
+			// Ignore default theme as already processed first
+			if ($theme->getId() === $this->defaultTheme->getId()) {
+				continue;
+			}
+			$this->addThemeHeader($theme->getId(), false);
+		}
+	}
+
+	/**
+	 * Inject theme header into rendered page
+	 *
+	 * @param string $themeId the theme ID
+	 * @param bool $plain request the :root syntax
+	 * @param string $media media query to use in the <link> element
+	 */
+	private function addThemeHeader(string $themeId, bool $plain = true, string $media = null) {
+		$linkToCSS = $this->urlGenerator->linkToRoute('theming.Theming.getThemeStylesheet', [
+			'themeId' => $themeId,
+			'plain' => $plain,
+			'v' => $this->util->getCacheBuster(),
+		]);
+		\OCP\Util::addHeader('link', [
+			'rel' => 'stylesheet',
+			'media' => $media,
+			'href' => $linkToCSS,
+			'class' => 'theme'
+		]);
+	}
+}

wedding-pics/apps/theming/lib/Service/ThemesService.php

@@ -0,0 +1,181 @@
+<?php
+/**
+ * @copyright Copyright (c) 2022 John Molakvoæ <skjnldsv@protonmail.com>
+ *
+ * @author John Molakvoæ <skjnldsv@protonmail.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+namespace OCA\Theming\Service;
+
+use OCA\Theming\AppInfo\Application;
+use OCA\Theming\ITheme;
+use OCA\Theming\Themes\DarkHighContrastTheme;
+use OCA\Theming\Themes\DarkTheme;
+use OCA\Theming\Themes\DefaultTheme;
+use OCA\Theming\Themes\DyslexiaFont;
+use OCA\Theming\Themes\HighContrastTheme;
+use OCA\Theming\Themes\LightTheme;
+use OCP\IConfig;
+use OCP\IUser;
+use OCP\IUserSession;
+
+class ThemesService {
+	private IUserSession $userSession;
+	private IConfig $config;
+
+	/** @var ITheme[] */
+	private array $themesProviders;
+
+	public function __construct(IUserSession $userSession,
+		IConfig $config,
+		DefaultTheme $defaultTheme,
+		LightTheme $lightTheme,
+		DarkTheme $darkTheme,
+		HighContrastTheme $highContrastTheme,
+		DarkHighContrastTheme $darkHighContrastTheme,
+		DyslexiaFont $dyslexiaFont) {
+		$this->userSession = $userSession;
+		$this->config = $config;
+
+		// Register themes
+		$this->themesProviders = [
+			$defaultTheme->getId() => $defaultTheme,
+			$lightTheme->getId() => $lightTheme,
+			$darkTheme->getId() => $darkTheme,
+			$highContrastTheme->getId() => $highContrastTheme,
+			$darkHighContrastTheme->getId() => $darkHighContrastTheme,
+			$dyslexiaFont->getId() => $dyslexiaFont,
+		];
+	}
+
+	/**
+	 * Get the list of all registered themes
+	 *
+	 * @return ITheme[]
+	 */
+	public function getThemes(): array {
+		return $this->themesProviders;
+	}
+
+	/**
+	 * Enable a theme for the logged-in user
+	 *
+	 * @param ITheme $theme the theme to enable
+	 * @return string[] the enabled themes
+	 */
+	public function enableTheme(ITheme $theme): array {
+		$themesIds = $this->getEnabledThemes();
+
+		// If already enabled, ignore
+		if (in_array($theme->getId(), $themesIds)) {
+			return $themesIds;
+		}
+
+		/** @var ITheme[] */
+		$themes = array_filter(array_map(function ($themeId) {
+			return $this->getThemes()[$themeId];
+		}, $themesIds));
+
+		// Filtering all themes with the same type
+		$filteredThemes = array_filter($themes, function (ITheme $t) use ($theme) {
+			return $theme->getType() === $t->getType();
+		});
+
+		// Retrieve IDs only
+		/** @var string[] */
+		$filteredThemesIds = array_map(function (ITheme $t) {
+			return $t->getId();
+		}, array_values($filteredThemes));
+
+		$enabledThemes = array_merge(array_diff($themesIds, $filteredThemesIds), [$theme->getId()]);
+		$this->setEnabledThemes($enabledThemes);
+
+		return $enabledThemes;
+	}
+
+	/**
+	 * Disable a theme for the logged-in user
+	 *
+	 * @param ITheme $theme the theme to disable
+	 * @return string[] the enabled themes
+	 */
+	public function disableTheme(ITheme $theme): array {
+		$themesIds = $this->getEnabledThemes();
+
+		// If enabled, removing it
+		if (in_array($theme->getId(), $themesIds)) {
+			$enabledThemes = array_diff($themesIds, [$theme->getId()]);
+			$this->setEnabledThemes($enabledThemes);
+			return $enabledThemes;
+		}
+		
+		return $themesIds;
+	}
+
+	/**
+	 * Check whether a theme is enabled or not
+	 * for the logged-in user
+	 *
+	 * @return bool
+	 */
+	public function isEnabled(ITheme $theme): bool {
+		$user = $this->userSession->getUser();
+		if ($user instanceof IUser) {
+			// Using keys as it's faster
+			$themes = $this->getEnabledThemes();
+			return in_array($theme->getId(), $themes);
+		}
+		return false;
+	}
+
+	/**
+	 * Get the list of all enabled themes IDs
+	 * for the logged-in user
+	 *
+	 * @return string[]
+	 */
+	public function getEnabledThemes(): array {
+		$user = $this->userSession->getUser();
+		if ($user === null) {
+			return [];
+		}
+
+		$enforcedTheme = $this->config->getSystemValueString('enforce_theme', '');
+		$enabledThemes = json_decode($this->config->getUserValue($user->getUID(), Application::APP_ID, 'enabled-themes', '[]'));
+		if ($enforcedTheme !== '') {
+			return array_merge([$enforcedTheme], $enabledThemes);
+		}
+
+		try {
+			return $enabledThemes;
+		} catch (\Exception $e) {
+			return [];
+		}
+	}
+
+	/**
+	 * Set the list of enabled themes
+	 * for the logged-in user
+	 *
+	 * @param string[] $themes the list of enabled themes IDs
+	 */
+	private function setEnabledThemes(array $themes): void {
+		$user = $this->userSession->getUser();
+		$this->config->setUserValue($user->getUID(), Application::APP_ID, 'enabled-themes', json_encode(array_values(array_unique($themes))));
+	}
+}