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.math.BigDecimal;
18 import java.math.RoundingMode;
19 import java.net.URLEncoder;
20 import java.nio.charset.StandardCharsets;
21 import java.time.DateTimeException;
22 import java.time.Instant;
23 import java.time.LocalDateTime;
24 import java.time.ZoneId;
25 import java.time.ZonedDateTime;
26 import java.time.format.DateTimeFormatter;
28 import javax.measure.Unit;
30 import org.eclipse.jdt.annotation.NonNullByDefault;
31 import org.eclipse.jdt.annotation.Nullable;
32 import org.openhab.binding.shelly.internal.api.ShellyApiException;
33 import org.openhab.binding.shelly.internal.api.ShellyDeviceProfile;
34 import org.openhab.core.library.types.DateTimeType;
35 import org.openhab.core.library.types.DecimalType;
36 import org.openhab.core.library.types.OnOffType;
37 import org.openhab.core.library.types.PercentType;
38 import org.openhab.core.library.types.QuantityType;
39 import org.openhab.core.library.types.StringType;
40 import org.openhab.core.types.Command;
41 import org.openhab.core.types.State;
42 import org.openhab.core.types.UnDefType;
44 import com.google.gson.Gson;
45 import com.google.gson.JsonSyntaxException;
48 * {@link ShellyUtils} provides general utility functions
50 * @author Markus Michels - Initial contribution
53 public class ShellyUtils {
54 private static final String PRE = "Unable to create object of type ";
55 public static final DateTimeFormatter DATE_TIME = DateTimeFormatter.ofPattern(DateTimeType.DATE_PATTERN);
57 public static <T> T fromJson(Gson gson, @Nullable String json, Class<T> classOfT) throws ShellyApiException {
59 T o = fromJson(gson, json, classOfT, true);
61 throw new ShellyApiException("Unable to create JSON object");
66 public static @Nullable <T> T fromJson(Gson gson, @Nullable String json, Class<T> classOfT, boolean exceptionOnNull)
67 throws ShellyApiException {
68 String className = substringAfter(classOfT.getName(), "$");
71 if (exceptionOnNull) {
72 throw new IllegalArgumentException(PRE + className + ": json is null!");
78 if (classOfT.isInstance(json)) {
79 return wrap(classOfT).cast(json);
80 } else if (json.isEmpty()) { // update GSON might return null
81 throw new ShellyApiException(PRE + className + "from empty JSON");
85 T obj = gson.fromJson(json, classOfT);
86 if ((obj == null) && exceptionOnNull) { // new in OH3: fromJson may return null
87 throw new ShellyApiException(PRE + className + "from JSON: " + json);
90 } catch (JsonSyntaxException e) {
91 throw new ShellyApiException(PRE + className + "from JSON (syntax/format error): " + json, e);
92 } catch (RuntimeException e) {
93 throw new ShellyApiException(PRE + className + "from JSON: " + json, e);
98 @SuppressWarnings("unchecked")
99 private static <T> Class<T> wrap(Class<T> type) {
100 if (type == int.class) {
101 return (Class<T>) Integer.class;
103 if (type == float.class) {
104 return (Class<T>) Float.class;
106 if (type == byte.class) {
107 return (Class<T>) Byte.class;
109 if (type == double.class) {
110 return (Class<T>) Double.class;
112 if (type == long.class) {
113 return (Class<T>) Long.class;
115 if (type == char.class) {
116 return (Class<T>) Character.class;
118 if (type == boolean.class) {
119 return (Class<T>) Boolean.class;
121 if (type == short.class) {
122 return (Class<T>) Short.class;
124 if (type == void.class) {
125 return (Class<T>) Void.class;
130 public static String mkChannelId(String group, String channel) {
131 return group + "#" + channel;
134 public static String getString(@Nullable String value) {
135 return value != null ? value : "";
138 public static String substringBefore(@Nullable String string, String pattern) {
139 if (string != null) {
140 int pos = string.indexOf(pattern);
142 return string.substring(0, pos);
148 public static String substringBeforeLast(@Nullable String string, String pattern) {
149 if (string != null) {
150 int pos = string.lastIndexOf(pattern);
152 return string.substring(0, pos);
158 public static String substringAfter(@Nullable String string, String pattern) {
159 if (string != null) {
160 int pos = string.indexOf(pattern);
162 return string.substring(pos + pattern.length());
168 public static String substringAfterLast(@Nullable String string, String pattern) {
169 if (string == null) {
172 int pos = string.lastIndexOf(pattern);
174 return string.substring(pos + pattern.length());
179 public static String substringBetween(@Nullable String string, String begin, String end) {
180 if (string != null) {
181 int s = string.indexOf(begin);
183 // The end tag might be included before the start tag, e.g.
184 // when using "http://" and ":" to get the IP from http://192.168.1.1:8081/xxx
185 // therefore make it 2 steps
186 String result = string.substring(s + begin.length());
187 return substringBefore(result, end);
193 public static String getMessage(Exception e) {
194 String message = e.getMessage();
195 return message != null ? message : "";
198 public static Integer getInteger(@Nullable Integer value) {
199 return (value != null ? (Integer) value : 0);
202 public static Long getLong(@Nullable Long value) {
203 return (value != null ? (Long) value : 0);
206 public static Double getDouble(@Nullable Double value) {
207 return (value != null ? (Double) value : 0);
210 public static Boolean getBool(@Nullable Boolean value) {
211 return (value != null ? (Boolean) value : false);
216 public static StringType getStringType(@Nullable String value) {
217 return new StringType(value != null ? value : "");
220 public static DecimalType getDecimal(@Nullable Double value) {
221 return new DecimalType((value != null ? value : 0));
224 public static DecimalType getDecimal(@Nullable Integer value) {
225 return new DecimalType((value != null ? value : 0));
228 public static DecimalType getDecimal(@Nullable Long value) {
229 return new DecimalType((value != null ? value : 0));
232 public static Double getNumber(Command command) throws IllegalArgumentException {
233 if (command instanceof DecimalType) {
234 return ((DecimalType) command).doubleValue();
236 if (command instanceof QuantityType) {
237 return ((QuantityType<?>) command).doubleValue();
239 throw new IllegalArgumentException("Unable to convert number");
242 public static OnOffType getOnOff(@Nullable Boolean value) {
243 return (value != null ? value ? OnOffType.ON : OnOffType.OFF : OnOffType.OFF);
246 public static OnOffType getOnOff(int value) {
247 return value == 0 ? OnOffType.OFF : OnOffType.ON;
250 public static State toQuantityType(@Nullable Double value, int digits, Unit<?> unit) {
252 return UnDefType.NULL;
254 BigDecimal bd = new BigDecimal(value.doubleValue());
255 return toQuantityType(bd.setScale(digits, RoundingMode.HALF_UP), unit);
258 public static State toQuantityType(@Nullable Number value, Unit<?> unit) {
259 return value == null ? UnDefType.NULL : new QuantityType<>(value, unit);
262 public static State toQuantityType(@Nullable PercentType value, Unit<?> unit) {
263 return value == null ? UnDefType.NULL : toQuantityType(value.toBigDecimal(), unit);
266 public static void validateRange(String name, Integer value, int min, int max) {
267 if ((value < min) || (value > max)) {
268 throw new IllegalArgumentException("Value " + name + " is out of range (" + min + "-" + max + ")");
272 public static String urlEncode(String input) {
273 return URLEncoder.encode(input, StandardCharsets.UTF_8);
276 public static Long now() {
277 return System.currentTimeMillis() / 1000L;
280 public static DateTimeType getTimestamp() {
281 return new DateTimeType(ZonedDateTime.ofInstant(Instant.ofEpochSecond(now()), ZoneId.systemDefault()));
284 public static DateTimeType getTimestamp(String zone, long timestamp) {
286 if (timestamp == 0) {
287 throw new IllegalArgumentException("Timestamp value 0 is invalid");
289 ZoneId zoneId = !zone.isEmpty() ? ZoneId.of(zone) : ZoneId.systemDefault();
290 ZonedDateTime zdt = LocalDateTime.now().atZone(zoneId);
291 int delta = zdt.getOffset().getTotalSeconds();
292 return new DateTimeType(ZonedDateTime.ofInstant(Instant.ofEpochSecond(timestamp - delta), zoneId));
293 } catch (DateTimeException e) {
294 // Unable to convert device's timezone, use system one
295 return getTimestamp();
299 public static String getTimestamp(DateTimeType dt) {
300 return dt.getZonedDateTime().toString().replace('T', ' ').replace('-', '/');
303 public static String convertTimestamp(long ts) {
307 String time = DATE_TIME.format(ZonedDateTime.ofInstant(Instant.ofEpochSecond(ts), ZoneId.systemDefault()));
308 return time.replace('T', ' ').replace('-', '/');
311 public static Integer getLightIdFromGroup(String groupName) {
312 if (groupName.startsWith(CHANNEL_GROUP_LIGHT_CHANNEL)) {
313 return Integer.parseInt(substringAfter(groupName, CHANNEL_GROUP_LIGHT_CHANNEL)) - 1;
315 return 0; // only 1 light, e.g. bulb or rgbw2 in color mode
318 public static String buildControlGroupName(ShellyDeviceProfile profile, Integer channelId) {
319 return profile.isBulb || profile.isDuo || profile.inColor ? CHANNEL_GROUP_LIGHT_CONTROL
320 : CHANNEL_GROUP_LIGHT_CHANNEL + channelId.toString();
323 public static String buildWhiteGroupName(ShellyDeviceProfile profile, Integer channelId) {
324 return profile.isBulb || profile.isDuo ? CHANNEL_GROUP_WHITE_CONTROL
325 : CHANNEL_GROUP_LIGHT_CHANNEL + channelId.toString();
328 public static DecimalType mapSignalStrength(int dbm) {
332 } else if (dbm > -70) {
334 } else if (dbm > -80) {
336 } else if (dbm > -90) {
341 return new DecimalType(strength);