Revert "feat(timetables): implement backend logic for timetable update"

This reverts commit 0208eb2.

backend/src/main/java/org/acme/TimetableResource.java

@@ -6,13 +6,9 @@
 import jakarta.ws.rs.Consumes;
 import jakarta.ws.rs.GET;
 import jakarta.ws.rs.POST;
-import jakarta.ws.rs.PUT;
 import jakarta.ws.rs.Path;
 import jakarta.ws.rs.Produces;
-import jakarta.ws.rs.WebApplicationException;
 import jakarta.ws.rs.core.MediaType;
-import jakarta.ws.rs.core.Response;
-
 import org.acme.domain.Room;
 import org.acme.domain.Student;
 import org.acme.domain.Timetable;
@@ -66,61 +62,11 @@ public List<Timetable> view() {
         return Timetable.listAll();
     }
 
-    /**
-     * Update the time/location of a unit once users make 
-     * drag-and-drop modifications in frontend
-     * 
-     * @param updatedUnit   Unit object with updated time/location
-     */
-    @Path("/update")
-    @PUT
-    @Transactional
+    @Path("/unit")
+    @POST
     @Consumes(MediaType.APPLICATION_JSON)
-    public Response unitUpdate(Unit updatedUnit) {
-
-        List<Unit> units = Unit.listAll();
-
-        // find existing Unit obj in db by unitId
-        for (Unit unit : units) {
-            if (updatedUnit.unitId == unit.unitId) {
-                assert(unit.isPersistent());
-                // update day of week
-                unit.dayOfWeek = updatedUnit.dayOfWeek;
-                // update startTime
-                unit.startTime = updatedUnit.startTime;
-                // if room is different
-                if (unit.room.roomCode != updatedUnit.room.roomCode 
-                || !unit.room.buildingId.equals(updatedUnit.room.buildingId)) {
-                    // update room
-                    Room newRoom;
-                    if ((newRoom = findRoom(updatedUnit.room)) == null) {
-                        throw new WebApplicationException("Room with building ID " + updatedUnit.room.buildingId + ", and room code " + updatedUnit.room.roomCode + " not found", 404);
-                    }
-                    unit.room = newRoom;
-                }
-                return Response.ok().build();
-            }
-        }
-        return Response.serverError().build();
-    }
-
-    /**
-     * Find existing Room object inside the database with 
-     * desired buildingId and roomCode
-     * 
-     * @param inputRoom     Room object with buildingId and roomCode of desired Room
-     * @return              Room object meeting the input criteria, null otherwise
-     */
-    public Room findRoom(Room inputRoom) {
-        List<Room> rooms = Room.listAll();
-        for (Room room : rooms) {
-            if (room.roomCode.equals(inputRoom.roomCode) 
-            && room.buildingId.equals(inputRoom.buildingId)) {
-                assert(room.isPersistent());
-                return room;
-            }
-        }
-        return null;
+    public Unit handleUnit(Unit unit) {
+        return unit;
     }
 
     public void findByCampusAndDelete(String campusName) {