2 * Copyright (c) 2010-2022 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;
49 * {@link ShellyUtils} provides general utility functions
51 * @author Markus Michels - Initial contribution
54 public class ShellyUtils {
55 private static final String PRE = "Unable to create object of type ";
56 public static final DateTimeFormatter DATE_TIME = DateTimeFormatter.ofPattern(DateTimeType.DATE_PATTERN);
58 public static <T> T fromJson(Gson gson, @Nullable String json, Class<T> classOfT) throws ShellyApiException {
60 T o = fromJson(gson, json, classOfT, true);
62 throw new ShellyApiException("Unable to create JSON object");
67 public static @Nullable <T> T fromJson(Gson gson, @Nullable String json, Class<T> classOfT, boolean exceptionOnNull)
68 throws ShellyApiException {
69 String className = substringAfter(classOfT.getName(), "$");
72 if (exceptionOnNull) {
73 throw new IllegalArgumentException(PRE + className + ": json is null!");
79 if (classOfT.isInstance(json)) {
80 return wrap(classOfT).cast(json);
81 } else if (json.isEmpty()) { // update GSON might return null
82 throw new ShellyApiException(PRE + className + "from empty JSON");
86 T obj = gson.fromJson(json, classOfT);
87 if ((obj == null) && exceptionOnNull) { // new in OH3: fromJson may return null
88 throw new ShellyApiException(PRE + className + "from JSON: " + json);
91 } catch (JsonSyntaxException e) {
92 throw new ShellyApiException(
93 PRE + className + "from JSON (syntax/format error: " + e.getMessage() + "): " + json, e);
94 } catch (RuntimeException e) {
95 throw new ShellyApiException(PRE + className + "from JSON: " + json, e);
100 @SuppressWarnings("unchecked")
101 private static <T> Class<T> wrap(Class<T> type) {
102 if (type == int.class) {
103 return (Class<T>) Integer.class;
105 if (type == float.class) {
106 return (Class<T>) Float.class;
108 if (type == byte.class) {
109 return (Class<T>) Byte.class;
111 if (type == double.class) {
112 return (Class<T>) Double.class;
114 if (type == long.class) {
115 return (Class<T>) Long.class;
117 if (type == char.class) {
118 return (Class<T>) Character.class;
120 if (type == boolean.class) {
121 return (Class<T>) Boolean.class;
123 if (type == short.class) {
124 return (Class<T>) Short.class;
126 if (type == void.class) {
127 return (Class<T>) Void.class;
132 public static String mkChannelId(String group, String channel) {
133 return group + "#" + channel;
136 public static String getString(@Nullable String value) {
137 return value != null ? value : "";
140 public static String substringBefore(@Nullable String string, String pattern) {
141 if (string != null) {
142 int pos = string.indexOf(pattern);
144 return string.substring(0, pos);
150 public static String substringBeforeLast(@Nullable String string, String pattern) {
151 if (string != null) {
152 int pos = string.lastIndexOf(pattern);
154 return string.substring(0, pos);
160 public static String substringAfter(@Nullable String string, String pattern) {
161 if (string != null) {
162 int pos = string.indexOf(pattern);
164 return string.substring(pos + pattern.length());
170 public static String substringAfterLast(@Nullable String string, String pattern) {
171 if (string == null) {
174 int pos = string.lastIndexOf(pattern);
176 return string.substring(pos + pattern.length());
181 public static String substringBetween(@Nullable String string, String begin, String end) {
182 if (string != null) {
183 int s = string.indexOf(begin);
185 // The end tag might be included before the start tag, e.g.
186 // when using "http://" and ":" to get the IP from http://192.168.1.1:8081/xxx
187 // therefore make it 2 steps
188 String result = string.substring(s + begin.length());
189 return substringBefore(result, end);
195 public static String getMessage(Exception e) {
196 String message = e.getMessage();
197 return message != null ? message : "";
200 public static Integer getInteger(@Nullable Integer value) {
201 return (value != null ? (Integer) value : 0);
204 public static Long getLong(@Nullable Long value) {
205 return (value != null ? (Long) value : 0);
208 public static Double getDouble(@Nullable Double value) {
209 return (value != null ? (Double) value : 0);
212 public static Boolean getBool(@Nullable Boolean value) {
213 return (value != null ? (Boolean) value : false);
218 public static StringType getStringType(@Nullable String value) {
219 return new StringType(value != null ? value : "");
222 public static DecimalType getDecimal(@Nullable Double value) {
223 return new DecimalType((value != null ? value : 0));
226 public static DecimalType getDecimal(@Nullable Integer value) {
227 return new DecimalType((value != null ? value : 0));
230 public static DecimalType getDecimal(@Nullable Long value) {
231 return new DecimalType((value != null ? value : 0));
234 public static Double getNumber(Command command) throws IllegalArgumentException {
235 if (command instanceof DecimalType) {
236 return ((DecimalType) command).doubleValue();
238 if (command instanceof QuantityType) {
239 return ((QuantityType<?>) command).doubleValue();
241 throw new IllegalArgumentException("Unable to convert number");
244 public static OnOffType getOnOff(@Nullable Boolean value) {
245 return (value != null ? value ? OnOffType.ON : OnOffType.OFF : OnOffType.OFF);
248 public static OnOffType getOnOff(int value) {
249 return value == 0 ? OnOffType.OFF : OnOffType.ON;
252 public static State toQuantityType(@Nullable Double value, int digits, Unit<?> unit) {
254 return UnDefType.NULL;
256 BigDecimal bd = new BigDecimal(value.doubleValue());
257 return toQuantityType(bd.setScale(digits, RoundingMode.HALF_UP), unit);
260 public static State toQuantityType(@Nullable Number value, Unit<?> unit) {
261 return value == null ? UnDefType.NULL : new QuantityType<>(value, unit);
264 public static State toQuantityType(@Nullable PercentType value, Unit<?> unit) {
265 return value == null ? UnDefType.NULL : toQuantityType(value.toBigDecimal(), unit);
268 public static void validateRange(String name, Integer value, int min, int max) {
269 if ((value < min) || (value > max)) {
270 throw new IllegalArgumentException("Value " + name + " is out of range (" + min + "-" + max + ")");
274 public static String urlEncode(String input) {
276 return URLEncoder.encode(input, StandardCharsets.UTF_8.toString());
277 } catch (UnsupportedEncodingException e) {
282 public static Long now() {
283 return System.currentTimeMillis() / 1000L;
286 public static DateTimeType getTimestamp() {
287 return new DateTimeType(ZonedDateTime.ofInstant(Instant.ofEpochSecond(now()), ZoneId.systemDefault()));
290 public static DateTimeType getTimestamp(String zone, long timestamp) {
292 if (timestamp == 0) {
293 throw new IllegalArgumentException("Timestamp value 0 is invalid");
295 ZoneId zoneId = !zone.isEmpty() ? ZoneId.of(zone) : ZoneId.systemDefault();
296 ZonedDateTime zdt = LocalDateTime.now().atZone(zoneId);
297 int delta = zdt.getOffset().getTotalSeconds();
298 return new DateTimeType(ZonedDateTime.ofInstant(Instant.ofEpochSecond(timestamp - delta), zoneId));
299 } catch (DateTimeException e) {
300 // Unable to convert device's timezone, use system one
301 return getTimestamp();
305 public static String getTimestamp(DateTimeType dt) {
306 return dt.getZonedDateTime().toString().replace('T', ' ').replace('-', '/');
309 public static String convertTimestamp(long ts) {
313 String time = DATE_TIME.format(ZonedDateTime.ofInstant(Instant.ofEpochSecond(ts), ZoneId.systemDefault()));
314 return time.replace('T', ' ').replace('-', '/');
317 public static Integer getLightIdFromGroup(String groupName) {
318 if (groupName.startsWith(CHANNEL_GROUP_LIGHT_CHANNEL)) {
319 return Integer.parseInt(substringAfter(groupName, CHANNEL_GROUP_LIGHT_CHANNEL)) - 1;
321 return 0; // only 1 light, e.g. bulb or rgbw2 in color mode
324 public static String buildControlGroupName(ShellyDeviceProfile profile, Integer channelId) {
325 return profile.isBulb || profile.isDuo || profile.inColor ? CHANNEL_GROUP_LIGHT_CONTROL
326 : CHANNEL_GROUP_LIGHT_CHANNEL + channelId.toString();
329 public static String buildWhiteGroupName(ShellyDeviceProfile profile, Integer channelId) {
330 return profile.isBulb || profile.isDuo ? CHANNEL_GROUP_WHITE_CONTROL
331 : CHANNEL_GROUP_LIGHT_CHANNEL + channelId.toString();
334 public static DecimalType mapSignalStrength(int dbm) {
338 } else if (dbm > -70) {
340 } else if (dbm > -80) {
342 } else if (dbm > -90) {
347 return new DecimalType(strength);