nextcloud/apps/theming/src/helpers/getBackgroundUrl.js

/**
 * @copyright Copyright (c) 2020 Julius Härtl <jus@bitgrid.net>
 *
 * @author Avior <florian.bouillon@delta-wings.net>
 * @author Julien Veyssier <eneiluj@posteo.net>
 * @author Julius Härtl <jus@bitgrid.net>
 *
 * @license AGPL-3.0-or-later
 *
 * 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/>.
 *
 */

import { generateUrl } from '@nextcloud/router'
import { prefixWithBaseUrl } from './prefixWithBaseUrl.js'

export const getBackgroundUrl = (background, time = 0, themingDefaultBackground = '') => {
	const enabledThemes = window.OCA?.Theming?.enabledThemes || []
	const isDarkTheme = (enabledThemes.length === 0 || enabledThemes[0] === 'default')
		? window.matchMedia('(prefers-color-scheme: dark)').matches
		: enabledThemes.join('').indexOf('dark') !== -1

	if (background === 'default') {
		if (themingDefaultBackground && themingDefaultBackground !== 'backgroundColor') {
			return generateUrl('/apps/theming/image/background') + '?v=' + window.OCA.Theming.cacheBuster
		}

		if (isDarkTheme) {
			return prefixWithBaseUrl('eduardo-neves-pedra-azul.jpg')
		}

		return prefixWithBaseUrl('kamil-porembinski-clouds.jpg')
	} else if (background === 'custom') {
		return generateUrl('/apps/theming/background') + '?v=' + time
	}

	return prefixWithBaseUrl(background)
}