Created the ServerStartRoute.java

src/main/java/de/gnmyt/mcdash/routes/server/ServerStartRoute.java

@@ -1,11 +1,39 @@
 package de.gnmyt.mcdash.routes.server;
 
+import de.gnmyt.mcdash.MCDashWrapper;
+import de.gnmyt.mcdash.api.ServerManager;
+import de.gnmyt.mcdash.entities.ServerStatus;
 import de.gnmyt.mcdash.handler.DefaultHandler;
 import de.gnmyt.mcdash.http.Request;
 import de.gnmyt.mcdash.http.ResponseController;
 
 public class ServerStartRoute extends DefaultHandler {
 
+    public static final ServerManager serverManager = MCDashWrapper.getServerManager();
+
+    /**
+     * Validates the request and returns the uuid of the server
+     *
+     * @param request  the request
+     * @param response the response
+     * @return the uuid of the server
+     */
+    public static String validateRequest(Request request, ResponseController response) {
+        if (!request.getBody().containsKey("uuid")) {
+            response.code(400).message("You have to provide a uuid in the body of your request");
+            return null;
+        }
+
+        String uuid = request.getBody().get("uuid");
+
+        if (serverManager.getServer(uuid) == null) {
+            response.code(404).message("Server not found");
+            return null;
+        }
+
+        return uuid;
+    }
+
     @Override
     public String path() {
         return "start";
@@ -13,6 +41,16 @@ public class ServerStartRoute extends DefaultHandler {
 
     @Override
     public void post(Request request, ResponseController response) throws Exception {
-        response.text("The server is already running");
+        String uuid = validateRequest(request, response);
+        if (uuid == null) return;
+
+        if (serverManager.getServer(uuid).getStatus() == ServerStatus.ONLINE) {
+            response.code(400).message("The server is already running");
+            return;
+        }
+
+        serverManager.startServer(serverManager.getServer(uuid));
+
+        response.message("The server has been started successfully");
     }
 }