from firebase_admin import db as fbdb
from threading import Thread
from tornado.ioloop import IOLoop
import logging as log


class Calibrations(object):
    TOLERANCE_RATE = 0.6
    THRESHOLD = 10
    FALL_TOLERANCE = 0
    SEGMENT_SIZE = 5
    HOURLY_OFFSET = -5

    # SEGMENT_SIZE
    # n = cualquier cantidad de segundos
    # ceil = la duracion del audio en segmentos de 5
    # integer = la duracion exacto del audio 

    def __init__(self, device_id, client=None):
        self.client = client
        self.dev_ref = fbdb.reference('devices').child(device_id)
        self.calibrations_ref = self.dev_ref.child('calibrations')
        self.thread = None
        self.listener = None
        self.items = {}

    def get(self, station):
        remote = self.get_remote(station)
        local  = self.items.get(station, None)

        if not remote and not local:
            calibration = {
                'tolerance': self.TOLERANCE_RATE,
                'threshold': self.THRESHOLD,
                'fallTolerance': self.FALL_TOLERANCE,
                'segmentSize': self.SEGMENT_SIZE,
                'hourlyOffset': self.HOURLY_OFFSET,
            }

        elif not remote and local:
            calibration = {
                'tolerance': self.TOLERANCE_RATE,
                'threshold': self.THRESHOLD,
                'fallTolerance': self.FALL_TOLERANCE,
                'segmentSize': self.SEGMENT_SIZE,
                'hourlyOffset': self.HOURLY_OFFSET,
            }

        else:
            calibration = {
                'tolerance': remote.get(
                    'tolerance',
                    self.TOLERANCE_RATE,
                ),
                'threshold': remote.get(
                    'threshold',
                    self.THRESHOLD,
                ),
                'fallTolerance': remote.get(
                    'fallTolerance',
                    self.FALL_TOLERANCE,
                ),
                'segmentSize': remote.get(
                    'segmentSize',
                    self.SEGMENT_SIZE,
                ),
                'hourlyOffset': remote.get(
                    'hourlyOffset',
                    self.HOURLY_OFFSET,
                )
            }

        self.items[station] = calibration

        return self.items[station]

    def get_remote(self, station):
        try:
            if self.client:
                return self.client.get_calibrations(station=station)
            else:
                calref = self.calibrations_ref.child(station)
                return calref.get()

        except Exception as err:
            log.error('[Calibrations.get_remote] {}'.format(err))
            return None