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   1 /**
   2  * Copyright (c) 2010-2020 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.lcn.internal.subhandler;
  14
  15 import java.util.Arrays;
  16 import java.util.Collection;
  17 import java.util.regex.Matcher;
  18 import java.util.regex.Pattern;
  19
  20 import org.eclipse.jdt.annotation.NonNullByDefault;
  21 import org.openhab.binding.lcn.internal.LcnBindingConstants;
  22 import org.openhab.binding.lcn.internal.LcnModuleHandler;
  23 import org.openhab.binding.lcn.internal.common.LcnChannelGroup;
  24 import org.openhab.binding.lcn.internal.common.LcnDefs;
  25 import org.openhab.binding.lcn.internal.common.LcnException;
  26 import org.openhab.binding.lcn.internal.common.PckGenerator;
  27 import org.openhab.binding.lcn.internal.common.Variable;
  28 import org.openhab.binding.lcn.internal.connection.ModInfo;
  29 import org.openhab.core.library.types.DecimalType;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 /**
  34  * Handles Commands and State changes of variables of an LCN module.
  35  *
  36  * @author Fabian Wolter - Initial contribution
  37  */
  38 @NonNullByDefault
  39 public class LcnModuleVariableSubHandler extends AbstractLcnModuleVariableSubHandler {
  40     private final Logger logger = LoggerFactory.getLogger(LcnModuleVariableSubHandler.class);
  41     private static final Pattern PATTERN = Pattern
  42             .compile(LcnBindingConstants.ADDRESS_REGEX + "\\.A(?<id>\\d{3})(?<value>\\d+)");
  43     private static final Pattern PATTERN_LEGACY = Pattern
  44             .compile(LcnBindingConstants.ADDRESS_REGEX + "\\.(?<value>\\d+)");
  45
  46     public LcnModuleVariableSubHandler(LcnModuleHandler handler, ModInfo info) {
  47         super(handler, info);
  48     }
  49
  50     @Override
  51     public void handleCommandDecimal(DecimalType command, LcnChannelGroup channelGroup, int number)
  52             throws LcnException {
  53         Variable variable = getVariable(channelGroup, number);
  54         try {
  55             int relativeChange = getRelativeChange(command, variable);
  56             handler.sendPck(PckGenerator.setVariableRelative(variable, LcnDefs.RelVarRef.CURRENT, relativeChange));
  57
  58             // request new value, if the module doesn't send it on itself
  59             if (variable.shouldPollStatusAfterCommand(info.getFirmwareVersion())) {
  60                 info.refreshVariable(variable);
  61             }
  62         } catch (LcnException e) {
  63             // current value unknown for some reason, refresh it in case we come again here
  64             info.refreshVariable(variable);
  65             throw e;
  66         }
  67     }
  68
  69     @Override
  70     public void handleStatusMessage(Matcher matcher) throws LcnException {
  71         Variable variable;
  72         if (matcher.pattern() == PATTERN) {
  73             variable = Variable.varIdToVar(Integer.parseInt(matcher.group("id")) - 1);
  74         } else if (matcher.pattern() == PATTERN_LEGACY) {
  75             variable = info.getLastRequestedVarWithoutTypeInResponse();
  76             info.setLastRequestedVarWithoutTypeInResponse(Variable.UNKNOWN); // Reset
  77         } else {
  78             logger.warn("Unexpected pattern: {}", matcher.pattern());
  79             return;
  80         }
  81         fireUpdateAndReset(matcher, "", variable);
  82     }
  83
  84     @Override
  85     public Collection<Pattern> getPckStatusMessagePatterns() {
  86         return Arrays.asList(PATTERN, PATTERN_LEGACY);
  87     }
  88 }