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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.melcloud.internal.api;
  14
  15 import java.io.ByteArrayInputStream;
  16 import java.io.IOException;
  17 import java.io.InputStream;
  18 import java.nio.charset.StandardCharsets;
  19 import java.util.ArrayList;
  20 import java.util.Arrays;
  21 import java.util.List;
  22 import java.util.Properties;
  23
  24 import org.openhab.binding.melcloud.internal.api.json.Device;
  25 import org.openhab.binding.melcloud.internal.api.json.DeviceStatus;
  26 import org.openhab.binding.melcloud.internal.api.json.HeatpumpDeviceStatus;
  27 import org.openhab.binding.melcloud.internal.api.json.ListDevicesResponse;
  28 import org.openhab.binding.melcloud.internal.api.json.LoginClientResponse;
  29 import org.openhab.binding.melcloud.internal.exceptions.MelCloudCommException;
  30 import org.openhab.binding.melcloud.internal.exceptions.MelCloudLoginException;
  31 import org.openhab.core.io.net.http.HttpUtil;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 import com.google.gson.FieldNamingPolicy;
  36 import com.google.gson.Gson;
  37 import com.google.gson.GsonBuilder;
  38 import com.google.gson.JsonObject;
  39 import com.google.gson.JsonSyntaxException;
  40
  41 /**
  42  * The {@link MelCloudConnection} Manage connection to Mitsubishi Cloud (MelCloud).
  43  *
  44  * @author Luca Calcaterra - Initial Contribution
  45  * @author Pauli Anttila - Refactoring
  46  * @author Wietse van Buitenen - Return all devices, added heatpump device
  47  */
  48 public class MelCloudConnection {
  49
  50     private static final String LOGIN_URL = "https://app.melcloud.com/Mitsubishi.Wifi.Client/Login/ClientLogin";
  51     private static final String DEVICE_LIST_URL = "https://app.melcloud.com/Mitsubishi.Wifi.Client/User/ListDevices";
  52     private static final String DEVICE_URL = "https://app.melcloud.com/Mitsubishi.Wifi.Client/Device";
  53
  54     private static final int TIMEOUT_MILLISECONDS = 10000;
  55
  56     // Gson objects are safe to share across threads and are somewhat expensive to construct. Use a single instance.
  57     private static final Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation()
  58             .setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE).create();
  59
  60     private final Logger logger = LoggerFactory.getLogger(MelCloudConnection.class);
  61
  62     private boolean isConnected = false;
  63     private String sessionKey;
  64
  65     public void login(String username, String password, int languageId)
  66             throws MelCloudCommException, MelCloudLoginException {
  67         setConnected(false);
  68         sessionKey = null;
  69         JsonObject jsonReq = new JsonObject();
  70         jsonReq.addProperty("Email", username);
  71         jsonReq.addProperty("Password", password);
  72         jsonReq.addProperty("Language", languageId);
  73         jsonReq.addProperty("AppVersion", "1.17.5.0");
  74         jsonReq.addProperty("Persist", false);
  75         jsonReq.addProperty("CaptchaResponse", (String) null);
  76         InputStream data = new ByteArrayInputStream(jsonReq.toString().getBytes(StandardCharsets.UTF_8));
  77
  78         try {
  79             String loginResponse = HttpUtil.executeUrl("POST", LOGIN_URL, null, data, "application/json",
  80                     TIMEOUT_MILLISECONDS);
  81             logger.debug("Login response: {}", loginResponse);
  82             LoginClientResponse resp = gson.fromJson(loginResponse, LoginClientResponse.class);
  83             if (resp.getErrorId() != null) {
  84                 String errorMsg = String.format("Login failed, error code: %s", resp.getErrorId());
  85                 if (resp.getErrorMessage() != null) {
  86                     errorMsg = String.format("%s (%s)", errorMsg, resp.getErrorMessage());
  87                 }
  88                 throw new MelCloudLoginException(errorMsg);
  89             }
  90             sessionKey = resp.getLoginData().getContextKey();
  91             setConnected(true);
  92         } catch (IOException | JsonSyntaxException e) {
  93             throw new MelCloudCommException(String.format("Login error, reason: %s", e.getMessage()), e);
  94         }
  95     }
  96
  97     public List<Device> fetchDeviceList() throws MelCloudCommException {
  98         assertConnected();
  99         try {
 100             String response = HttpUtil.executeUrl("GET", DEVICE_LIST_URL, getHeaderProperties(), null, null,
 101                     TIMEOUT_MILLISECONDS);
 102             logger.debug("Device list response: {}", response);
 103             List<Device> devices = new ArrayList<>();
 104             ListDevicesResponse[] buildings = gson.fromJson(response, ListDevicesResponse[].class);
 105             Arrays.asList(buildings).forEach(building -> {
 106                 if (building.getStructure().getDevices() != null) {
 107                     devices.addAll(building.getStructure().getDevices());
 108                 }
 109                 building.getStructure().getAreas().forEach(area -> {
 110                     if (area.getDevices() != null) {
 111                         devices.addAll(area.getDevices());
 112                     }
 113                 });
 114                 building.getStructure().getFloors().forEach(floor -> {
 115                     if (floor.getDevices() != null) {
 116                         devices.addAll(floor.getDevices());
 117                     }
 118                     floor.getAreas().forEach(area -> {
 119                         if (area.getDevices() != null) {
 120                             devices.addAll(area.getDevices());
 121                         }
 122                     });
 123                 });
 124             });
 125             logger.debug("Found {} devices", devices.size());
 126
 127             return devices;
 128         } catch (IOException | JsonSyntaxException e) {
 129             setConnected(false);
 130             throw new MelCloudCommException("Error occurred during device list poll", e);
 131         }
 132     }
 133
 134     public DeviceStatus fetchDeviceStatus(int deviceId, int buildingId) throws MelCloudCommException {
 135         assertConnected();
 136         String url = DEVICE_URL + String.format("/Get?id=%d&buildingID=%d", deviceId, buildingId);
 137         try {
 138             String response = HttpUtil.executeUrl("GET", url, getHeaderProperties(), null, null, TIMEOUT_MILLISECONDS);
 139             logger.debug("Device status response: {}", response);
 140             DeviceStatus deviceStatus = gson.fromJson(response, DeviceStatus.class);
 141             return deviceStatus;
 142         } catch (IOException | JsonSyntaxException e) {
 143             setConnected(false);
 144             throw new MelCloudCommException("Error occurred during device status fetch", e);
 145         }
 146     }
 147
 148     public DeviceStatus sendDeviceStatus(DeviceStatus deviceStatus) throws MelCloudCommException {
 149         assertConnected();
 150         String content = gson.toJson(deviceStatus, DeviceStatus.class);
 151         logger.debug("Sending device status: {}", content);
 152         InputStream data = new ByteArrayInputStream(content.getBytes(StandardCharsets.UTF_8));
 153         try {
 154             String response = HttpUtil.executeUrl("POST", DEVICE_URL + "/SetAta", getHeaderProperties(), data,
 155                     "application/json", TIMEOUT_MILLISECONDS);
 156             logger.debug("Device status sending response: {}", response);
 157             return gson.fromJson(response, DeviceStatus.class);
 158         } catch (IOException | JsonSyntaxException e) {
 159             setConnected(false);
 160             throw new MelCloudCommException("Error occurred during device command sending", e);
 161         }
 162     }
 163
 164     public HeatpumpDeviceStatus fetchHeatpumpDeviceStatus(int deviceId, int buildingId) throws MelCloudCommException {
 165         assertConnected();
 166         String url = DEVICE_URL + String.format("/Get?id=%d&buildingID=%d", deviceId, buildingId);
 167         try {
 168             String response = HttpUtil.executeUrl("GET", url, getHeaderProperties(), null, null, TIMEOUT_MILLISECONDS);
 169             logger.debug("Device heatpump status response: {}", response);
 170             HeatpumpDeviceStatus heatpumpDeviceStatus = gson.fromJson(response, HeatpumpDeviceStatus.class);
 171             return heatpumpDeviceStatus;
 172         } catch (IOException | JsonSyntaxException e) {
 173             setConnected(false);
 174             throw new MelCloudCommException("Error occurred during heatpump device status fetch", e);
 175         }
 176     }
 177
 178     public HeatpumpDeviceStatus sendHeatpumpDeviceStatus(HeatpumpDeviceStatus heatpumpDeviceStatus)
 179             throws MelCloudCommException {
 180         assertConnected();
 181         String content = gson.toJson(heatpumpDeviceStatus, HeatpumpDeviceStatus.class);
 182         logger.debug("Sending heatpump device status: {}", content);
 183         InputStream data = new ByteArrayInputStream(content.getBytes(StandardCharsets.UTF_8));
 184         try {
 185             String response = HttpUtil.executeUrl("POST", DEVICE_URL + "/SetAtw", getHeaderProperties(), data,
 186                     "application/json", TIMEOUT_MILLISECONDS);
 187             logger.debug("Device heatpump status sending response: {}", response);
 188             return gson.fromJson(response, HeatpumpDeviceStatus.class);
 189         } catch (IOException | JsonSyntaxException e) {
 190             setConnected(false);
 191             throw new MelCloudCommException("Error occurred during heatpump device command sending", e);
 192         }
 193     }
 194
 195     public synchronized boolean isConnected() {
 196         return isConnected;
 197     }
 198
 199     private synchronized void setConnected(boolean state) {
 200         isConnected = state;
 201     }
 202
 203     private Properties getHeaderProperties() {
 204         Properties headers = new Properties();
 205         headers.put("X-MitsContextKey", sessionKey);
 206         return headers;
 207     }
 208
 209     private void assertConnected() throws MelCloudCommException {
 210         if (!isConnected) {
 211             throw new MelCloudCommException("Not connected to MELCloud");
 212         }
 213     }
 214 }