Add getTwilightTimeProvider to providers by name

And fix eclipse indentation

src/main/java/eu/m724/wtapi/provider/Providers.java

@@ -3,6 +3,8 @@ package eu.m724.wtapi.provider;
 import eu.m724.wtapi.provider.exception.NoSuchProviderException;
 import eu.m724.wtapi.provider.thunder.ThunderProvider;
 import eu.m724.wtapi.provider.thunder.impl.blitzortung.BlitzortungProvider;
+import eu.m724.wtapi.provider.twilight.ApproximateTwilightTimeProvider;
+import eu.m724.wtapi.provider.twilight.TwilightTimeProvider;
 import eu.m724.wtapi.provider.weather.WeatherProvider;
 import eu.m724.wtapi.provider.weather.impl.openweathermap.OpenWeatherMapProvider;
 
@@ -10,8 +12,8 @@ public class Providers {
 	
 	public static ThunderProvider getThunderProvider(String name, String apiKey) throws NoSuchProviderException {
 		switch (name.toLowerCase()) {
-		case "blitzortung":
-			return new BlitzortungProvider();
+			case "blitzortung":
+				return new BlitzortungProvider();
 		}
 		
 		throw new NoSuchProviderException();
@@ -19,8 +21,17 @@ public class Providers {
 	
 	public static WeatherProvider getWeatherProvider(String name, String apiKey) throws NoSuchProviderException {
 		switch (name.toLowerCase()) {
-		case "openweathermap":
-			return new OpenWeatherMapProvider(apiKey);
+			case "openweathermap":
+				return new OpenWeatherMapProvider(apiKey);
+		}
+		
+		throw new NoSuchProviderException();
+	}
+
+	public static TwilightTimeProvider getTwilightTimeProvider(String name, String apiKey) throws NoSuchProviderException {
+		switch (name.toLowerCase()) {
+			case "approximate":
+				return new ApproximateTwilightTimeProvider();
 		}
 
 		throw new NoSuchProviderException();

src/main/java/eu/m724/wtapi/provider/twilight/ApproximateTwilightTimeProvider.java

@@ -13,7 +13,7 @@ import static java.lang.Math.*;
  * Usually off by a few minutes, except the Poles which, during polar days, are up to few hours inaccurate
  * Adapted from: <a href="https://gml.noaa.gov/grad/solcalc/solareqns.PDF">https://gml.noaa.gov/grad/solcalc/solareqns.PDF</a>
  */
-public class SimpleTwilightTimeProvider extends TwilightTimeProvider {
+public class ApproximateTwilightTimeProvider extends TwilightTimeProvider {
     @Override
     public Twilight calculateTwilightTime(LocalDate date, Coordinates coordinates) {
         int dayOfYear = date.getDayOfYear() - 1; // -1 because we have to start from zero

src/test/java/eu/m724/wtapi/twilight/ApproximateTwilightTimeTest.java

@@ -2,13 +2,13 @@ package eu.m724.wtapi.twilight;
 
 import eu.m724.wtapi.object.Coordinates;
 import eu.m724.wtapi.object.Twilight;
-import eu.m724.wtapi.provider.twilight.SimpleTwilightTimeProvider;
+import eu.m724.wtapi.provider.twilight.ApproximateTwilightTimeProvider;
 import eu.m724.wtapi.provider.twilight.TwilightTimeProvider;
 import org.junit.Test;
 
 import java.time.LocalDate;
 
-public class SimpleTwilightTimeTest {
+public class ApproximateTwilightTimeTest {
     /**
      * Acceptable discrepancy in minutes
      */
@@ -16,7 +16,7 @@ public class SimpleTwilightTimeTest {
 
     @Test
     public void approximateTest() {
-        TwilightTimeProvider provider = new SimpleTwilightTimeProvider();
+        TwilightTimeProvider provider = new ApproximateTwilightTimeProvider();
 
         testLocation(provider, 26, 6, 2023, 53.123394, 23.0864867, 122, 1139);
         testLocation(provider, 13, 11, 2040, 45.432427, -122.3899276, 907, 1481);