1 /**
2 * This file Copyright (c) 2020 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.ui.framework.util;
35
36 import info.magnolia.cms.security.MgnlUserManager;
37 import info.magnolia.cms.security.User;
38
39 import java.time.Instant;
40 import java.time.ZoneId;
41 import java.util.Date;
42 import java.util.Locale;
43 import java.util.Optional;
44 import java.util.TimeZone;
45
46 import org.apache.commons.lang3.StringUtils;
47
48 /**
49 * Convenience class for getting current user configuration. Mostly for timezone related info.
50 */
51 public final class TimezoneUtil {
52
53 public static Locale getUserLocale(User user) {
54 return Optional.ofNullable(user.getProperty(MgnlUserManager.PROPERTY_LANGUAGE))
55 .filter(StringUtils::isNotBlank)
56 .map(lang -> StringUtils.substringBefore(lang, "_"))
57 .map(Locale::new)
58 .orElse(Locale.getDefault());
59 }
60
61 public static ZoneId getUserZoneId(User user) {
62 return getTimezonePropertyValue(user)
63 .map(ZoneId::of)
64 .orElse(ZoneId.systemDefault());
65 }
66
67 public static TimeZone getUserTimezone(User user) {
68 return getTimezonePropertyValue(user)
69 .map(TimeZone::getTimeZone)
70 .orElse(TimeZone.getDefault());
71 }
72
73 /**
74 * Render short or long info string for current time zone of the form:
75 * info (zoneId)
76 */
77 public static String getTimeZoneInfo(User user, int style) {
78 return getUserTimezone(user).getDisplayName(isUsersZoneInDST(user), style, getUserLocale(user))
79 + " (" + getUserZoneId(user).getId() + ")";
80 }
81
82 private static Optional<String> getTimezonePropertyValue(User user) {
83 return Optional.ofNullable(user.getProperty(MgnlUserManager.PROPERTY_TIMEZONE))
84 .filter(StringUtils::isNotEmpty);
85 }
86
87 private static boolean isUsersZoneInDST(User user) {
88 return getUserTimezone(user).inDaylightTime(Date.from(Instant.now()));
89 }
90 }