src/main/java/net/pterodactylus/xdcc/ui/stdin/UptimeCommand.java

   1 package net.pterodactylus.xdcc.ui.stdin;
   2
   3 import java.io.IOException;
   4 import java.io.Writer;
   5 import java.time.Duration;
   6 import java.time.OffsetDateTime;
   7 import java.time.format.DateTimeFormatter;
   8 import java.util.Collection;
   9 import java.util.Collections;
  10 import java.util.List;
  11 import java.util.stream.Collectors;
  12 import java.util.stream.Stream;
  13
  14 import net.pterodactylus.xdcc.core.Core;
  15 import net.pterodactylus.xdcc.data.ConnectedNetwork;
  16
  17 /**
  18  * {@link Command} that writes uptime information.
  19  *
  20  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  21  */
  22 public class UptimeCommand implements Command {
  23
  24         private final DateTimeFormatter formatter = DateTimeFormatter.RFC_1123_DATE_TIME;
  25         private final Core core;
  26
  27         public UptimeCommand(Core core) {
  28                 this.core = core;
  29         }
  30
  31         @Override
  32         public String getName() {
  33                 return "uptime";
  34         }
  35
  36         @Override
  37         public Collection<String> getAliases() {
  38                 return Collections.emptySet();
  39         }
  40
  41         @Override
  42         public State execute(State state, List<String> parameters, Writer outputWriter)
  43         throws IOException {
  44                 OffsetDateTime now = OffsetDateTime.now();
  45                 outputWriter.write(String.format("Core running since %s, %s ago.\n",
  46                                 formatter.format(core.getUptime().subtractFrom(now)),
  47                                 formatTime(core.getUptime())));
  48                 for (ConnectedNetwork network : core.connectedNetworks()) {
  49                         outputWriter.write(String.format("%s connected since %s, %s ago.\n",
  50                                         network.getNetwork().name(),
  51                                         formatter.format(network.getUptime().subtractFrom(now)),
  52                                         formatTime(network.getUptime())));
  53                 }
  54                 return state;
  55         }
  56
  57         private String formatTime(Duration uptime) {
  58                 long uptimeSeconds = uptime.getSeconds();
  59                 long seconds = uptimeSeconds % 60;
  60                 long minutes = (uptimeSeconds / 60) % 60;
  61                 long hours = (uptimeSeconds / (60 * 60)) % 24;
  62                 long days = (uptimeSeconds / (60 * 60 * 24)) % 7;
  63                 long weeks = (uptimeSeconds / (60 * 60 * 24 * 7));
  64                 String uptimeString = Stream
  65                                 .of(weeks + "w", days + "d", hours + "h", minutes + "m", seconds + "s")
  66                                 .filter(v -> !v.startsWith("0"))
  67                                 .collect(Collectors.joining(" "));
  68                 return uptimeString.isEmpty() ? "0s" : uptimeString;
  69         }
  70
  71 }