2 * Copyright (c) 2010-2021 Contributors to the openHAB project
4 * See the NOTICE file(s) distributed with this work for additional
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
11 * SPDX-License-Identifier: EPL-2.0
13 package org.openhab.binding.shelly.internal.util;
15 import static org.openhab.binding.shelly.internal.ShellyBindingConstants.*;
17 import java.io.UnsupportedEncodingException;
18 import java.math.BigDecimal;
19 import java.math.RoundingMode;
20 import java.net.URLEncoder;
21 import java.nio.charset.StandardCharsets;
22 import java.time.DateTimeException;
23 import java.time.Instant;
24 import java.time.LocalDateTime;
25 import java.time.ZoneId;
26 import java.time.ZonedDateTime;
27 import java.time.format.DateTimeFormatter;
29 import javax.measure.Unit;
31 import org.eclipse.jdt.annotation.NonNullByDefault;
32 import org.eclipse.jdt.annotation.Nullable;
33 import org.openhab.binding.shelly.internal.api.ShellyApiException;
34 import org.openhab.binding.shelly.internal.api.ShellyDeviceProfile;
35 import org.openhab.core.library.types.DateTimeType;
36 import org.openhab.core.library.types.DecimalType;
37 import org.openhab.core.library.types.OnOffType;
38 import org.openhab.core.library.types.PercentType;
39 import org.openhab.core.library.types.QuantityType;
40 import org.openhab.core.library.types.StringType;
41 import org.openhab.core.types.Command;
42 import org.openhab.core.types.State;
43 import org.openhab.core.types.UnDefType;
45 import com.google.gson.Gson;
46 import com.google.gson.JsonSyntaxException;
47 import com.google.gson.internal.Primitives;
50 * {@link ShellyUtils} provides general utility functions
52 * @author Markus Michels - Initial contribution
55 public class ShellyUtils {
56 private final static String PRE = "Unable to create object of type ";
57 public final static DateTimeFormatter DATE_TIME = DateTimeFormatter.ofPattern(DateTimeType.DATE_PATTERN);
59 public static <T> T fromJson(Gson gson, @Nullable String json, Class<T> classOfT) throws ShellyApiException {
61 T o = fromJson(gson, json, classOfT, true);
63 throw new ShellyApiException("Unable to create JSON object");
68 public static @Nullable <T> T fromJson(Gson gson, @Nullable String json, Class<T> classOfT, boolean exceptionOnNull)
69 throws ShellyApiException {
70 String className = substringAfter(classOfT.getName(), "$");
73 if (exceptionOnNull) {
74 throw new IllegalArgumentException(PRE + className + ": json is null!");
80 if (classOfT.isInstance(json)) {
81 return Primitives.wrap(classOfT).cast(json);
82 } else if (json.isEmpty()) { // update GSON might return null
83 throw new ShellyApiException(PRE + className + "from empty JSON");
87 T obj = gson.fromJson(json, classOfT);
88 if ((obj == null) && exceptionOnNull) { // new in OH3: fromJson may return null
89 throw new ShellyApiException(PRE + className + "from JSON: " + json);
92 } catch (JsonSyntaxException e) {
93 throw new ShellyApiException(PRE + className + "from JSON (syntax/format error): " + json, e);
94 } catch (RuntimeException e) {
95 throw new ShellyApiException(PRE + className + "from JSON: " + json, e);
100 public static String mkChannelId(String group, String channel) {
101 return group + "#" + channel;
104 public static String getString(@Nullable String value) {
105 return value != null ? value : "";
108 public static String substringBefore(@Nullable String string, String pattern) {
109 if (string != null) {
110 int pos = string.indexOf(pattern);
112 return string.substring(0, pos);
118 public static String substringBeforeLast(@Nullable String string, String pattern) {
119 if (string != null) {
120 int pos = string.lastIndexOf(pattern);
122 return string.substring(0, pos);
128 public static String substringAfter(@Nullable String string, String pattern) {
129 if (string != null) {
130 int pos = string.indexOf(pattern);
132 return string.substring(pos + pattern.length());
138 public static String substringAfterLast(@Nullable String string, String pattern) {
139 if (string == null) {
142 int pos = string.lastIndexOf(pattern);
144 return string.substring(pos + pattern.length());
149 public static String substringBetween(@Nullable String string, String begin, String end) {
150 if (string != null) {
151 int s = string.indexOf(begin);
153 // The end tag might be included before the start tag, e.g.
154 // when using "http://" and ":" to get the IP from http://192.168.1.1:8081/xxx
155 // therefore make it 2 steps
156 String result = string.substring(s + begin.length());
157 return substringBefore(result, end);
163 public static String getMessage(Exception e) {
164 String message = e.getMessage();
165 return message != null ? message : "";
168 public static Integer getInteger(@Nullable Integer value) {
169 return (value != null ? (Integer) value : 0);
172 public static Long getLong(@Nullable Long value) {
173 return (value != null ? (Long) value : 0);
176 public static Double getDouble(@Nullable Double value) {
177 return (value != null ? (Double) value : 0);
180 public static Boolean getBool(@Nullable Boolean value) {
181 return (value != null ? (Boolean) value : false);
186 public static StringType getStringType(@Nullable String value) {
187 return new StringType(value != null ? value : "");
190 public static DecimalType getDecimal(@Nullable Double value) {
191 return new DecimalType((value != null ? value : 0));
194 public static DecimalType getDecimal(@Nullable Integer value) {
195 return new DecimalType((value != null ? value : 0));
198 public static DecimalType getDecimal(@Nullable Long value) {
199 return new DecimalType((value != null ? value : 0));
202 public static Double getNumber(Command command) throws IllegalArgumentException {
203 if (command instanceof DecimalType) {
204 return ((DecimalType) command).doubleValue();
206 if (command instanceof QuantityType) {
207 return ((QuantityType<?>) command).doubleValue();
209 throw new IllegalArgumentException("Unable to convert number");
212 public static OnOffType getOnOff(@Nullable Boolean value) {
213 return (value != null ? value ? OnOffType.ON : OnOffType.OFF : OnOffType.OFF);
216 public static OnOffType getOnOff(int value) {
217 return value == 0 ? OnOffType.OFF : OnOffType.ON;
220 public static State toQuantityType(@Nullable Double value, int digits, Unit<?> unit) {
222 return UnDefType.NULL;
224 BigDecimal bd = new BigDecimal(value.doubleValue());
225 return toQuantityType(bd.setScale(digits, RoundingMode.HALF_UP), unit);
228 public static State toQuantityType(@Nullable Number value, Unit<?> unit) {
229 return value == null ? UnDefType.NULL : new QuantityType<>(value, unit);
232 public static State toQuantityType(@Nullable PercentType value, Unit<?> unit) {
233 return value == null ? UnDefType.NULL : toQuantityType(value.toBigDecimal(), unit);
236 public static void validateRange(String name, Integer value, int min, int max) {
237 if ((value < min) || (value > max)) {
238 throw new IllegalArgumentException("Value " + name + " is out of range (" + min + "-" + max + ")");
242 public static String urlEncode(String input) {
244 return URLEncoder.encode(input, StandardCharsets.UTF_8.toString());
245 } catch (UnsupportedEncodingException e) {
250 public static Long now() {
251 return System.currentTimeMillis() / 1000L;
254 public static DateTimeType getTimestamp() {
255 return new DateTimeType(ZonedDateTime.ofInstant(Instant.ofEpochSecond(now()), ZoneId.systemDefault()));
258 public static DateTimeType getTimestamp(String zone, long timestamp) {
260 if (timestamp == 0) {
261 throw new IllegalArgumentException("Timestamp value 0 is invalid");
263 ZoneId zoneId = !zone.isEmpty() ? ZoneId.of(zone) : ZoneId.systemDefault();
264 ZonedDateTime zdt = LocalDateTime.now().atZone(zoneId);
265 int delta = zdt.getOffset().getTotalSeconds();
266 return new DateTimeType(ZonedDateTime.ofInstant(Instant.ofEpochSecond(timestamp - delta), zoneId));
267 } catch (DateTimeException e) {
268 // Unable to convert device's timezone, use system one
269 return getTimestamp();
273 public static String getTimestamp(DateTimeType dt) {
274 return dt.getZonedDateTime().toString().replace('T', ' ').replace('-', '/');
277 public static String convertTimestamp(long ts) {
281 String time = DATE_TIME.format(ZonedDateTime.ofInstant(Instant.ofEpochSecond(ts), ZoneId.systemDefault()));
282 return time.replace('T', ' ').replace('-', '/');
285 public static Integer getLightIdFromGroup(String groupName) {
286 if (groupName.startsWith(CHANNEL_GROUP_LIGHT_CHANNEL)) {
287 return Integer.parseInt(substringAfter(groupName, CHANNEL_GROUP_LIGHT_CHANNEL)) - 1;
289 return 0; // only 1 light, e.g. bulb or rgbw2 in color mode
292 public static String buildControlGroupName(ShellyDeviceProfile profile, Integer channelId) {
293 return profile.isBulb || profile.isDuo || profile.inColor ? CHANNEL_GROUP_LIGHT_CONTROL
294 : CHANNEL_GROUP_LIGHT_CHANNEL + channelId.toString();
297 public static String buildWhiteGroupName(ShellyDeviceProfile profile, Integer channelId) {
298 return profile.isBulb || profile.isDuo ? CHANNEL_GROUP_WHITE_CONTROL
299 : CHANNEL_GROUP_LIGHT_CHANNEL + channelId.toString();
302 public static DecimalType mapSignalStrength(int dbm) {
306 } else if (dbm > -70) {
308 } else if (dbm > -80) {
310 } else if (dbm > -90) {
315 return new DecimalType(strength);