gistfile1.txt

@app.route('/vote/<int:selfie_id>', methods=['GET'])
def vote(selfie_id):
 
  selfie = models.Selfie.query.filter_by(id=selfie_id).first()
    
  if not selfie:
    return jsonify(error="Something went wrong.")
    
  # Check if the user has already voted on this item
  this_vote = models.Vote.query.filter_by(user_id=current_user.id, selfie_id=selfie_id).first()
 
  if this_vote:
    return jsonify(error='You have already voted on this selfie. Try again in 24 hours.')
    
  last_vote = models.Vote.query \
              .filter_by(user_id=current_user.id) \
              .order_by(models.Vote.created_at.desc()) \
              .first()
        
  # Has the user cast a vote?
  if last_vote:
    created_at = last_vote.created_at
    future = created_at + datetime.timedelta(seconds=30)
  
    # Has the user cast a vote within the last 30 seconds?
    if future > datetime.datetime.utcnow():
      return jsonify(error='Slow down, you are going too fast.', created_at=created_at)
          
    vote = models.Vote(selfie_id=selfie_id, user_id=current_user.id)
    db.session.add(vote)
    db.session.commit()
    
  return jsonify(success='Your vote has been counted.')