add update checks

src/main/java/io/github/jack1424/realtimeweather/ConfigManager.java

@@ -19,7 +19,7 @@ public class ConfigManager {
 	private final FileConfiguration configFile;
 	private TimeZone timeZone;
 	private boolean debug, timeEnabled, weatherEnabled, blockTimeSetCommand, blockWeatherCommand, disableBedsAtNight, disableBedsDuringThunder;
-	private long timeSyncInterval, weatherSyncInterval;
+	private long timeSyncInterval, weatherSyncInterval, updateCheckInterval;
 	private String sunriseSunset, sunriseSunsetLatitude, sunriseSunsetLongitude, apiKey, weatherLatitude, weatherLongitude, disableBedsAtNightMessage, disableBedsDuringThunderMessage, sunriseCustomTime, sunsetCustomTime;
 
 	public ConfigManager(RealTimeWeather rtw) {
@@ -71,6 +71,8 @@ public class ConfigManager {
 
 				setWeatherEnabled(false);
 			}
+
+		setUpdateCheckInterval(configFile.getLong("updateCheckInterval"));
 	}
 
 	public boolean debugEnabled() {
@@ -308,4 +310,13 @@ public class ConfigManager {
 		weatherLongitude = value;
 		rtw.debug("Longitude set to " + value);
 	}
+
+	public void setUpdateCheckInterval(long value) {
+		updateCheckInterval = value;
+		rtw.debug("updateCheckInterval set to " + value);
+	}
+
+	public long getUpdateCheckInterval() {
+		return updateCheckInterval;
+	}
 }

src/main/java/io/github/jack1424/realtimeweather/RealTimeWeather.java

@@ -43,6 +43,15 @@ public final class RealTimeWeather extends JavaPlugin {
 		metrics.addCustomChart(new SimplePie("time_sync_enabled", () -> String.valueOf(config.isTimeEnabled())));
 
 		logger.info("Started!");
+
+		logger.info("Checking for updates...");
+		logger.info(getUpdateCheck());
+
+		long updateCheckInterval = config.getUpdateCheckInterval();
+		if (config.getUpdateCheckInterval() > 0)
+			getServer().getScheduler().scheduleSyncRepeatingTask(this,  () -> {
+				logger.info(getUpdateCheck());
+			}, updateCheckInterval, updateCheckInterval);
 	}
 
 	@Override
@@ -168,6 +177,23 @@ public final class RealTimeWeather extends JavaPlugin {
 		}
 	}
 
+	public String getUpdateCheck() {
+		String currentVersion = this.getDescription().getVersion();
+		String latestVersion;
+		try {
+			debug("Getting latest version...");
+			latestVersion = RequestFunctions.getLatestVersion();
+		} catch (Exception exception) {
+			debug(exception.getMessage());
+			return "There was an error getting the latest version";
+		}
+
+		if (currentVersion.equals(latestVersion)) {
+			return String.format("RealTimeWeather (v%s) is up to date!", currentVersion);
+		} else
+			return String.format("RealTimeWeather (v%s) is outdated! v%s is the latest version.", currentVersion, latestVersion);
+	}
+
 	public ConfigManager getConfigurator() {
 		return config;
 	}