'''
  ____    _    ____      _    
 / ___|  / \  |  _ \    / \   
 \___ \ / _ \ | |_) |  / _ \  
  ___) / ___ \|  _ <  / ___ \ 
 |____/_/   \_\_| \_\/_/   \_\
                              
Script to see if the SARA-R410 is running
ex:
python3 /var/www/nebuleair_pro_4g/SARA/sara.py ttyAMA2 ATI 2
ex 1 (get SIM infos)
python3 /var/www/nebuleair_pro_4g/SARA/sara.py ttyAMA2 AT+CCID? 2
ex 2 (turn on blue light):
python3 /var/www/nebuleair_pro_4g/SARA/sara.py ttyAMA2 AT+UGPIOC=16,2 2
ex 3 (reconnect network)
python3 /var/www/nebuleair_pro_4g/SARA/sara.py ttyAMA2 AT+COPS=1,2,20801 20
ex 4 (get HTTP Profiles)
python3 /var/www/nebuleair_pro_4g/SARA/sara.py ttyAMA2 AT+UHTTP? 2
ex 5 (get IP addr)
python3 /var/www/nebuleair_pro_4g/SARA/sara.py ttyAMA2 AT+CGPADDR=1 2

'''

import serial
import time
import sys
import json

parameter = sys.argv[1:]  # Exclude the script name
#print("Parameters received:")
port='/dev/'+parameter[0] # ex: ttyAMA2
command = parameter[1]  # ex: AT+CCID?
timeout = float(parameter[2])  # ex:2

# Access the shared variables
baudrate = 115200

try:

    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
    )

    ser.write((command + '\r').encode('utf-8'))

    #ser.write(b'ATI\r')            #General Information
    #ser.write(b'AT+CCID?\r')       #SIM card number
    #ser.write(b'AT+CPIN?\r')       #Check the status of the SIM card
    #ser.write(b'AT+CIND?\r')       #Indication state (last number is SIM detection: 0 no SIM detection, 1 SIM detected, 2 not available)
    #ser.write(b'AT+UGPIOR=?\r')   #Reads the current value of the specified GPIO pin
    #ser.write(b'AT+UGPIOC?\r')     #GPIO select configuration
    #ser.write(b'AT+COPS=?\r')     #Check the network and cellular technology the modem is currently using
    #ser.write(b'AT+COPS=1,2,20801') #connext to orange
    #ser.write(b'AT+CFUN=?\r')     #Selects/read the level of functionality 
    #ser.write(b'AT+URAT=?\r')     #Radio Access Technology 
    #ser.write(b'AT+USIMSTAT?')
    #ser.write(b'AT+IPR=115200')           #Check/Define baud rate
    #ser.write(b'AT+CMUX=?')


    # Read lines until a timeout occurs
    response_lines = []
    start_time = time.time()

    while (time.time() - start_time) < timeout:
        line = ser.readline().decode('utf-8', errors='ignore').strip()
        if line:
            response_lines.append(line)

    # Check if we received any data
    if not response_lines:
        print(f"ERROR: No response received from {port} after sending command: {command}")
        sys.exit(1)

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

except serial.SerialException as e:
    print(f"ERROR: Serial communication error: {e}")
    sys.exit(1)
except Exception as e:
    print(f"ERROR: Unexpected error: {e}")
    sys.exit(1)
finally:
    # Close the serial port if it's open
    if 'ser' in locals() and ser.is_open:
        ser.close()