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   1 /**
   2  * Copyright (c) 2010-2021 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.groheondus.internal;
  14
  15 import java.io.IOException;
  16 import java.util.ArrayList;
  17 import java.util.List;
  18
  19 import javax.servlet.ServletException;
  20 import javax.servlet.http.HttpServlet;
  21 import javax.servlet.http.HttpServletRequest;
  22 import javax.servlet.http.HttpServletResponse;
  23
  24 import org.eclipse.jdt.annotation.NonNullByDefault;
  25 import org.eclipse.jdt.annotation.Nullable;
  26 import org.eclipse.jetty.http.HttpStatus;
  27 import org.openhab.core.thing.Thing;
  28 import org.osgi.service.component.annotations.Activate;
  29 import org.osgi.service.component.annotations.Component;
  30 import org.osgi.service.component.annotations.Reference;
  31 import org.osgi.service.component.annotations.ServiceScope;
  32 import org.osgi.service.http.HttpService;
  33 import org.osgi.service.http.NamespaceException;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 /**
  38  * @author Florian Schmidt - Initial contribution
  39  */
  40 @NonNullByDefault
  41 @Component(service = AccountsServlet.class, scope = ServiceScope.SINGLETON)
  42 public class AccountsServlet extends HttpServlet {
  43     private static final long serialVersionUID = -9183159739446995608L;
  44
  45     private static final String SERVLET_URL = "/groheondus";
  46
  47     private final Logger logger = LoggerFactory.getLogger(AccountsServlet.class);
  48     private final List<Thing> accounts = new ArrayList<>();
  49     private HttpService httpService;
  50
  51     @Activate
  52     public AccountsServlet(@Reference HttpService httpService) {
  53         this.httpService = httpService;
  54
  55         try {
  56             httpService.registerServlet(SERVLET_URL, this, null, httpService.createDefaultHttpContext());
  57         } catch (ServletException | NamespaceException e) {
  58             logger.warn("Register servlet fails", e);
  59         }
  60     }
  61
  62     public void addAccount(Thing accountThing) {
  63         accounts.add(accountThing);
  64     }
  65
  66     public void removeAccount(Thing accountThing) {
  67         accounts.remove(accountThing);
  68     }
  69
  70     public void deactivate() {
  71         httpService.unregister(SERVLET_URL);
  72     }
  73
  74     @Override
  75     protected void doGet(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp)
  76             throws ServletException, IOException {
  77         if (req == null || resp == null) {
  78             return;
  79         }
  80
  81         StringBuilder htmlString = new StringBuilder();
  82         htmlString.append("<html>");
  83         htmlString.append("<head>");
  84         htmlString.append("<title>GROHE Ondus Account login</title>");
  85         htmlString.append("</head>");
  86         htmlString.append("<body>");
  87         if (accounts.isEmpty()) {
  88             htmlString.append(
  89                     "Please first create an GROHE ONDUS account thing in openHAB in order to log into this account.");
  90         } else {
  91             htmlString.append(
  92                     "You've the following GROHE ONDUS account things, click on the one you want to manage:<br />");
  93             htmlString.append("<ul>");
  94             accounts.forEach(account -> {
  95                 String accountId = account.getUID().getId();
  96                 htmlString.append("<li>");
  97                 htmlString.append("<a href=\"");
  98                 htmlString.append(SERVLET_URL);
  99                 htmlString.append("/");
 100                 htmlString.append(accountId);
 101                 htmlString.append("\">");
 102                 htmlString.append(accountId);
 103                 htmlString.append("</a>");
 104                 htmlString.append("</li>");
 105             });
 106             htmlString.append("</ul>");
 107         }
 108         htmlString.append("</body>");
 109         htmlString.append("</html>");
 110
 111         resp.setStatus(HttpStatus.OK_200);
 112         resp.getWriter().write(htmlString.toString());
 113     }
 114 }