text: try:
      from userbot.modules.sql_helper import SESSION, BASE
  except ImportError:
      raise AttributeError
  import threading
  from sqlalchemy import Integer, Column, String, UnicodeText, func, distinct, Boolean
  
  
  class Warns(BASE):
      __tablename__ = "warns"
  
      user_id = Column(Integer, primary_key=True)
      chat_id = Column(String(14), primary_key=True)
      num_warns = Column(Integer, default=0)
      reasons = Column(UnicodeText)
  
      def __init__(self, user_id, chat_id):
          self.user_id = user_id
          self.chat_id = str(chat_id)
          self.num_warns = 0
          self.reasons = ""
  
      def __repr__(self):
          return "<{} warns for {} in {} for reasons {}>".format(
              self.num_warns, self.user_id, self.chat_id, self.reasons)
  
  
  class WarnSettings(BASE):
      __tablename__ = "warn_settings"
      chat_id = Column(String(14), primary_key=True)
      warn_limit = Column(Integer, default=3)
      soft_warn = Column(Boolean, default=False)
  
      def __init__(self, chat_id, warn_limit=3, soft_warn=False):
          self.chat_id = str(chat_id)
          self.warn_limit = warn_limit
          self.soft_warn = soft_warn
  
      def __repr__(self):
          return "<{} has {} possible warns.>".format(
              self.chat_id, self.warn_limit)
  
  
  Warns.__table__.create(checkfirst=True)
  WarnSettings.__table__.create(checkfirst=True)
  
  
  WARN_INSERTION_LOCK = threading.RLock()
  WARN_SETTINGS_LOCK = threading.RLock()
  
  
  def warn_user(user_id, chat_id, reason=None):
      with WARN_INSERTION_LOCK:
          warned_user = SESSION.query(Warns).get((user_id, str(chat_id)))
          if not warned_user:
              warned_user = Warns(user_id, str(chat_id))
  
          warned_user.num_warns += 1
          if reason:
              warned_user.reasons = warned_user.reasons + "\r\n\r\n" + \
                  reason  # TODO:: double check this wizardry
  
          reasons = warned_user.reasons
          num = warned_user.num_warns
  
          SESSION.add(warned_user)
          SESSION.commit()
  
          return num, reasons
  
  
  def remove_warn(user_id, chat_id):
      with WARN_INSERTION_LOCK:
          removed = False
          warned_user = SESSION.query(Warns).get((user_id, str(chat_id)))
  
          if warned_user and warned_user.num_warns > 0:
              warned_user.num_warns -= 1
  
              SESSION.add(warned_user)
              SESSION.commit()
              removed = True
  
          SESSION.close()
          return removed
  
  
  def reset_warns(user_id, chat_id):
      with WARN_INSERTION_LOCK:
          warned_user = SESSION.query(Warns).get((user_id, str(chat_id)))
          if warned_user:
              warned_user.num_warns = 0
              warned_user.reasons = ""
  
              SESSION.add(warned_user)
              SESSION.commit()
          SESSION.close()
  
  
  def get_warns(user_id, chat_id):
      try:
          user = SESSION.query(Warns).get((user_id, str(chat_id)))
          if not user:
              return None
          reasons = user.reasons
          num = user.num_warns
          return num, reasons
      finally:
          SESSION.close()
  
  
  def set_warn_limit(chat_id, warn_limit):
      with WARN_SETTINGS_LOCK:
          curr_setting = SESSION.query(WarnSettings).get(str(chat_id))
          if not curr_setting:
              curr_setting = WarnSettings(chat_id, warn_limit=warn_limit)
  
          curr_setting.warn_limit = warn_limit
  
          SESSION.add(curr_setting)
          SESSION.commit()
  
  
  def set_warn_strength(chat_id, soft_warn):
      with WARN_SETTINGS_LOCK:
          curr_setting = SESSION.query(WarnSettings).get(str(chat_id))
          if not curr_setting:
              curr_setting = WarnSettings(chat_id, soft_warn=soft_warn)
  
          curr_setting.soft_warn = soft_warn
  
          SESSION.add(curr_setting)
          SESSION.commit()
  
  
  def get_warn_setting(chat_id):
      try:
          setting = SESSION.query(WarnSettings).get(str(chat_id))
          if setting:
              return setting.warn_limit, setting.soft_warn
          else:
              return 3, False
  
      finally:
          SESSION.close()
  
  
  def num_warns():
      try:
          return SESSION.query(func.sum(Warns.num_warns)).scalar() or 0
      finally:
          SESSION.close()
  
  
  def num_warn_chats():
      try:
          return SESSION.query(func.count(distinct(Warns.chat_id))).scalar()
      finally:
          SESSION.close()
  