import appdaemon.plugins.hass.hassapi as hass
from datetime import timedelta
import datetime
import globals
import requests

#
# App to monitor entity update time.
#
# Args:
#
#
# None
#
# Release Notes
#
# Version 1.0:
#   Initial Version

class Watchdog(hass.Hass):
  listen_event_handle_list = []
  timezone = 0
  def initialize(self):
    if not globals.check_args(self, ['check_interval', 'timeout']):
      return
    self.timer = self.run_every(self.watchdog_check, self.datetime()+timedelta(seconds=1), self.args['check_interval'])

  def watchdog_check(self, kwargs):
    if 'constraint' in self.args and not self.constrain_input_boolean(self.args['constraint']):
      self.log('disabled by constraint')
      return
    
    entities = []
    if 'entity' in self.args:
      entities.append(self.args['entity'])
    if 'entities' in self.args:
      for entity in self.args['entities']:
        entities.append(entity)
    
    # self.log(entities)
    for entity in entities:
      # entity = self.args['entity']
      attributes = self.get_state(entity, attribute='all')
      if not 'last_changed' in attributes:
        continue
      now = datetime.datetime.now()
      last_changed = attributes['last_changed']
      last_changed_date = datetime.datetime.strptime(last_changed, '%Y-%m-%dT%H:%M:%S.%f+00:00') + timedelta(hours=self.timezone)
      time_diff = now - last_changed_date
      
      # self.log('{}: {}, {}, {} (now: {})'.format(entity, last_changed, last_changed_date, time_diff, now))
      if time_diff.seconds > self.args['timeout']:
        self.log('Entity {} was changed {} seconds ago.'.format(entity, time_diff.seconds))

        friendly_name = self.friendly_name(entity)
        message = "Датчик {} ({}) не обновлялся в течении {} секунд.".format(friendly_name, entity, self.args['timeout'])
        self.notify(message, name = self.args.get('notify', "telegram"))