Dorađen rest server.

src/main/hr/fer/tel/ops/App.java

@@ -8,6 +8,11 @@
 import spark.Request;
 import spark.Response;
 import spark.Route;
+import spark.Spark;
+import spark.route.SimpleRouteMatcher;
+
+import java.lang.reflect.Field;
+import java.util.List;
 
 import static javax.servlet.http.HttpServletResponse.SC_BAD_REQUEST;
 import static spark.Spark.get;
@@ -19,10 +24,13 @@ public class App {
 
 	private static final XMLOutputter xmlOut = new XMLOutputter(Format.getPrettyFormat());
 
+	private static String podržaneRute;
+
 	/** Pokreće web aplikaciju. */
 	public static void main(String[] args) {
 		final Server s = new Server();
 
+
 		// zahtjev za registracijom
 		get(new Route("/reg/:login/:pass") {
 			@Override
@@ -32,7 +40,7 @@ public Object handle(Request request, Response response) {
 
 				Either<String, String> odgovor = s.zahtjevZaRegistracijom(korisničkoIme, lozinka);
 
-				return either2response(response, odgovor, SC_BAD_REQUEST);
+				return either2xml(response, odgovor, SC_BAD_REQUEST);
 			}
 		});
 
@@ -45,25 +53,78 @@ public Object handle(Request request, Response response) {
 
 				Either<String, String> odgovor = s.zahtjevZaUkidanjeRegistracije(korisničkoIme, lozinka);
 
-				return either2response(response, odgovor, SC_BAD_REQUEST);
+				return either2xml(response, odgovor, SC_BAD_REQUEST);
+			}
+		});
+
+		// vraća broj registriranih korisnika.
+		get(new Route("/count") {
+			@Override
+			public Object handle(final Request request, final Response response) {
+				return string2xml(Integer.toString(s.getBrojKorisnika()));
+			}
+		});
+
+		podržaneRute = dohvatiRute();
+
+		// ispisuje sve podržane rute koristeći Reflection API.
+		get(new Route("/") {
+			@Override
+			public Object handle(final Request request, final Response response) {
+				return podržaneRute;
 			}
 		});
+	}
+
 
+	/** Vraća sve podržane rute koristeći Reflection. */
+	private static String dohvatiRute() {
+		final StringBuilder sb = new StringBuilder("REST metode: \n\n");
+		try {
+			final Field routeMatcher = Spark.class.getDeclaredField("routeMatcher");
+			routeMatcher.setAccessible(true);
+			final SimpleRouteMatcher simpleRouteMatcher = (SimpleRouteMatcher) routeMatcher.get(null);
+
+			final Field routesField = simpleRouteMatcher.getClass().getDeclaredField("routes");
+			routesField.setAccessible(true);
+
+			@SuppressWarnings("unchecked")
+			final List<?> routes = (List<?>) routesField.get(simpleRouteMatcher);
+			for (final Object route: routes) {
+				sb.append(route.toString().split(", ")[1]).append("\n");
+			}
+			return sb.toString();
+		} catch (Exception ignored)  {
+			return ignored.getMessage();
+		}
+	}
+
+	/** Generira XML odgovor na temelju zadanog Stringa. */
+	private static String string2xml(final String string) {
+		final Document doc = new Document();
+		final Element root = new Element("ops");
+		doc.setRootElement(root);
+
+		final Element odgovorEl = new Element("odgovor");
+
+		odgovorEl.addContent(string);
+		root.addContent(odgovorEl);
+		return xmlOut.outputString(doc);
 	}
 
-	/** Generira String odgovor na temelju zadanog Eithera. */
-	private static String either2response(final Response httpResponse, final Either<String, String> odgovor, final int greškaKod) {
+	/** Generira XML odgovor na temelju zadanog Eithera. */
+	private static String either2xml(final Response httpResponse, final Either<String, String> either, final int greškaKod) {
 		final Document doc = new Document();
 		final Element root = new Element("ops");
 		doc.setRootElement(root);
 
-		final Element odgovorEl = new Element(odgovor.getClass().getSimpleName().toLowerCase());
+		final Element odgovorEl = new Element(either.getClass().getSimpleName().toLowerCase());
 
-		if (odgovor.isLeft()) {
+		if (either.isLeft()) {
 			httpResponse.status(greškaKod);
 		}
 
-		odgovorEl.addContent(odgovor.toString());
+		odgovorEl.addContent(either.toString());
 		root.addContent(odgovorEl);
 		return xmlOut.outputString(doc);
 	}