#!/usr/bin/python3
# -*- encoding: utf-8 -*-

# @author: benoit.vince84@free.fr
# @date: Septembre 2022
# @brief: Programme Pwrkey pour le GNSS HAT 

###################################################################
# Importation de modules externes                                 #

import sys, os, re
import serial
import RPi.GPIO as GPIO
import time
import logging as log
import time
from datetime import datetime, date
import calendar
import json
import socket

###################################################################
# Class et Methods                                                #

def get_conf(logger=None):
    ''' Get configuration

        :return dict:
            Configuration dictionnary
    '''
    config = None
    try:
        with open(os.path.join("/home/pi/KineIntercom/src", "KineIntercom.json"), 'r') as f:
            try:
               config = json.load(f)
            except json.decoder.JSONDecodeError as e:
                logger.error("Impossible de charger les données de configuration ({})".format(e))
    except FileNotFoundError as e:
        logger.error("Impossible d'ouvrir le fichier de configuation ({})".format(e))
        
    return config

def verify_open_hours(conf=None, log=None):
    ''' Verify if GSM HAT must be opened with conf hours

        :param conf:
            configuration object

        :param log:
            logger object

        :return bool:
            True if authorized, False otherwise
    '''
    flag = False
    my_date = date.today()
    day = calendar.day_name[my_date.weekday()]
    now = datetime.now()
    for k,v in conf[day].items():
        time_conf = int(k.split('h')[0])*60 + int(k.split('h')[1])
        current_time = now.hour*60 + now.minute
        if current_time >= time_conf:
            if v == 1:
                flag = True
            elif v == 0:
                flag = False
    log.debug('Jour: {} - Temps courant: {} - Ouverture: {}'.format(day, now.strftime('%Hh%M'), flag))
    return flag

def init_module():
    ''' initialisation of GNSS/GPS/GSM HAT Module
    '''
    GPIO.setmode(GPIO.BOARD)
    GPIO.setup(7, GPIO.OUT)
    return

def setup_module():
    ''' Setup module (Set/Reset)
    '''
    while True:
        GPIO.output(7, GPIO.LOW)
        time.sleep(2)
        GPIO.output(7, GPIO.HIGH)
        break
    GPIO.cleanup()

def main():
    ''' main function
    '''
    logger = log.getLogger("pwrkey")
    logger.setLevel(log.DEBUG)
    fl = log.StreamHandler()
    fl.setLevel(log.DEBUG)
    formatter = log.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
    fl.setFormatter(formatter)
    logger.addHandler(fl)

    # get config dictionnary
    config = get_conf(logger)
    if not config:
        exit(1)
    
    # create a UDS socket
    sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
    # Connect the socket to the port where the server is listening
    server_addr = '/tmp/uds_socket'
    try:
        sock.connect(server_addr)
    except socket.error as e:
        logger.error("Erreur de connexion avec le serveur: {}".format(e))
        sys.exit(1)

    opened = verify_open_hours(conf=config['HORAIRES'], log=logger)
    sock.sendall(str(opened))

    sock.close()
    #init_module()
    #setup_module()

if __name__ == '__main__':
    main()