import json
import requests

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

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

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')
auth = config['push'].get('auth')


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}?auth={auth}',
        data='update'.encode(encoding='utf-8')
    )


if __name__ == '__main__':
    main()