def modifyUSession():
    uSession = UserSession.query.get(request.args['sessionID'])
    newDescription = uSession.description
    newFeedBack_score = uSession.feedback_score
    newStart_date = uSession.start_date
    newEnd_date = uSession.end_date
    newCourse = Course.query.get(request.args["courseID"])
    if not(newDescription == request.args['description']):
        newDescription = request.args['description']
    if not(newFeedBack_score == request.args['feedback']):
        newFeedBack_score = request.args['feedback']
    from datetime import datetime
    if not(newStart_date == datetime.fromtimestamp(float(request.args['startDate'])/1000)):
        newStart_date = datetime.fromtimestamp(float(request.args['startDate'])/1000)
    if not(newEnd_date == datetime.fromtimestamp(float(request.args['endDate'])/1000)):
        newEnd_date = datetime.fromtimestamp(float(request.args['endDate'])/1000)
    newSession = UserSession(uSession.user, newCourse, newDescription, newFeedBack_score, newStart_date, newEnd_date)
    oldId =uSession.id
    uSession.deleteUntrackedSession()
    db.session.delete(uSession)
    db.session.commit()
    newSession.id = oldId
    db.session.add(newSession)
    db.session.commit()
    
    return "done"
def modifieUntrackedSession():
    uSession = UserSession.query.get(1)
    oldId = uSession.id
    newDescription = uSession.description
    newFeedBack_score = uSession.feedback_score
    newStart_date = uSession.start_date
    newEnd_date = uSession.end_date
    if not(newDescription == "description is aangepast"):
        newDescription = "description is aangepast"
    if not(newFeedBack_score == "nieuweFeedback"):
        newFeedBack_score = "nieuweFeedback"
    if not(newStart_date == newStart_date):
        newStart_date = newStart_date
    if not(newEnd_date == newEnd_date):
        newEnd_date = newEnd_date
    newSession = UserSession(uSession.user, uSession.course, newDescription, newFeedBack_score, newStart_date, newEnd_date)
    db.session.delete(uSession)
    db.session.commit()
    newSession.id = oldId
    db.session.add(newSession)
    db.session.commit()
    return "ok"