'''
Script to connect SARA-R410 to network SARA-R410
python3 /var/www/moduleair_pro_4g/SARA/sara_connectNetwork.py ttyAMA2 20801 10

AT+COPS=1,2,20801
mode->1 pour manual
format->2 pour numeric
operator->20801 pour orange
'''

import serial
import time
import sys
import json

parameter = sys.argv[1:]  # Exclude the script name
port='/dev/'+parameter[0] # ex: ttyAMA2
networkID = parameter[1]  # ex: 20801
timeout = float(parameter[2])  # ex:2


#get baudrate
def load_config(config_file):
    try:
        with open(config_file, 'r') as file:
            config_data = json.load(file)
        return config_data
    except Exception as e:
        print(f"Error loading config file: {e}")
        return {}

# Define the config file path
config_file = '/var/www/moduleair_pro_4g/config.json'
# Load the configuration data
config = load_config(config_file)
# Access the shared variables
baudrate = config.get('SaraR4_baudrate', 115200)

ser = serial.Serial(
    port=port,  #USB0 or ttyS0
    baudrate=baudrate, #115200 ou 9600
    parity=serial.PARITY_NONE, #PARITY_NONE, PARITY_EVEN or PARITY_ODD
    stopbits=serial.STOPBITS_ONE,
    bytesize=serial.EIGHTBITS,
    timeout = timeout
)

command = f'AT+COPS=1,2,"{networkID}"\r'
ser.write((command + '\r').encode('utf-8'))


try:
    # Read lines until a timeout occurs
    response_lines = []
    while True:
        line = ser.readline().decode('utf-8').strip()
        if not line:
            break  # Break the loop if an empty line is encountered
        response_lines.append(line)

    # Print the response
    for line in response_lines:
        print(line)

except serial.SerialException as e:
    print(f"Error: {e}")

finally:
    if ser.is_open:
        ser.close()
        #print("Serial closed")