Correction of groups endpoint

buisnesslogic/src/main/java/com/plannaplan/entities/Groups.java

@@ -30,6 +30,10 @@ public class Groups {
     public Groups() {
     }
 
+    public Long getId() {
+        return this.id;
+    }
+
     public Lecturer getLecturer() {
         return lecturer;
     }

buisnesslogic/src/main/java/com/plannaplan/entities/Lecturer.java

@@ -47,4 +47,9 @@ public class Lecturer {
     public Lecturer() {
     }
 
+    @Override
+    public String toString() {
+        return String.format("%s %s %s", this.title, this.name, this.surname);
+    }
+
 }

restservice/src/main/java/com/plannaplan/controllers/GroupController.java

@@ -1,5 +1,9 @@
 package com.plannaplan.controllers;
 
+import java.security.acl.Group;
+import java.util.ArrayList;
+import java.util.Dictionary;
+import java.util.Hashtable;
 import java.util.List;
 
 import com.plannaplan.entities.Groups;
@@ -20,7 +24,23 @@ public class GroupController {
     private GroupService groupService;
 
     @GetMapping("/getCourseGroups")
-    public ResponseEntity<List<Groups>> getCourses(@RequestParam("id") Long id) {
+    public ResponseEntity<List<Dictionary<String, Object>>> getCourses(@RequestParam("id") Long id) {
-        return new ResponseEntity<>(this.groupService.getGroupsByCourse(id), HttpStatus.OK);
+        List<Groups> groups = this.groupService.getGroupsByCourse(id);
+        List<Dictionary<String, Object>> response = new ArrayList<>();
+
+        for (Groups g : groups) {
+            Dictionary<String, Object> group = new Hashtable<>();
+            group.put("id", g.getId());
+            group.put("day", g.getDay().label + 1);
+            group.put("time", String.format("%o.%o", g.getTime() / 60, g.getTime() % 60));
+            group.put("lecturer", g.getLecturer().toString());
+            group.put("room", g.getRoom());
+            group.put("capacity", g.getCapacity());
+            group.put("type", g.getType());
+
+            response.add(group);
+        }
+
+        return new ResponseEntity<>(response, HttpStatus.OK);
     }
 }