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   1 /**
   2  * Copyright (c) 2010-2023 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.mqtt.generic.values;
  14
  15 import java.time.format.DateTimeFormatter;
  16 import java.util.List;
  17
  18 import org.eclipse.jdt.annotation.NonNullByDefault;
  19 import org.eclipse.jdt.annotation.Nullable;
  20 import org.openhab.core.library.CoreItemFactory;
  21 import org.openhab.core.library.types.DateTimeType;
  22 import org.openhab.core.library.types.StringType;
  23 import org.openhab.core.types.Command;
  24 import org.openhab.core.types.UnDefType;
  25
  26 /**
  27  * Implements a datetime value.
  28  *
  29  * @author David Graeff - Initial contribution
  30  */
  31 @NonNullByDefault
  32 public class DateTimeValue extends Value {
  33     public DateTimeValue() {
  34         super(CoreItemFactory.DATETIME, List.of(DateTimeType.class, StringType.class));
  35     }
  36
  37     @Override
  38     public void update(Command command) throws IllegalArgumentException {
  39         if (command instanceof DateTimeType) {
  40             state = ((DateTimeType) command);
  41         } else {
  42             state = DateTimeType.valueOf(command.toString());
  43         }
  44     }
  45
  46     @Override
  47     public String getMQTTpublishValue(@Nullable String pattern) {
  48         if (state == UnDefType.UNDEF) {
  49             return "";
  50         }
  51         String formatPattern = pattern;
  52         if (formatPattern == null || "%s".contentEquals(formatPattern)) {
  53             return DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(((DateTimeType) state).getZonedDateTime());
  54         }
  55         return String.format(formatPattern, ((DateTimeType) state).getZonedDateTime());
  56     }
  57 }