import json
import requests
import sys

from configparser import ConfigParser
from gpiozero import Button
from signal import pause
from signal import signal
from signal import SIGTERM
from threading import Lock

threadLock = Lock()
stateFile = 'www/garage.json'
state = {'east-door': 'opened', 'west-door': 'opened'}

config = ConfigParser()
config.read('garage.cfg')
eastPin = config['garage'].getint('east-pin')
westPin = config['garage'].getint('west-pin')
ntfy = config['push'].get('ntfy')
topic = config['push'].get('topic')


def main():
    eastButton = Button(eastPin)
    westButton = Button(westPin)

    state['east-door'] = 'closed' if eastButton.is_pressed else 'open'
    state['west-door'] = 'closed' if westButton.is_pressed else 'open'

    persistState()

    eastButton.when_pressed = eastDoorClosed
    eastButton.when_released = eastDoorOpened
    westButton.when_pressed = westDoorClosed
    westButton.when_released = westDoorOpened

    pause()


def eastDoorOpened():
    with threadLock:
        state['east-door'] = 'opened'
        persistState()
        sendNotification()


def eastDoorClosed():
    with threadLock:
        state['east-door'] = 'closed'
        persistState()
        sendNotification()


def westDoorOpened():
    with threadLock:
        state['west-door'] = 'opened'
        persistState()
        sendNotification()


def westDoorClosed():
    with threadLock:
        state['west-door'] = 'closed'
        persistState()
        sendNotification()


def persistState():
    with open(stateFile, 'w') as file:
        json.dump(state, file)


def sendNotification():
    requests.post(
        url=f'https://{ntfy}/{topic}',
        data='update'.encode(encoding='utf-8')
    )


if __name__ == '__main__':
    main()