#!/usr/bin/python3
# -*- coding: utf-8 -*-
"""
Created on Tue Dec 22 16:58:45 2020

@author: DJ2LS

main module for running the tnc
"""
import argparse
import multiprocessing
import os
import signal
import socketserver
import sys
import threading
import time
import config
import data_handler
import helpers
import log_handler
import modem
import static
import structlog

log = structlog.get_logger("main")


def signal_handler(sig, frame):
    """
    a signal handler, which closes the network/socket when closing the application
    Args:
      sig: signal
      frame:

    Returns: system exit

    """
    print("Closing TNC...")
    sock.CLOSE_SIGNAL = True
    sys.exit(0)


signal.signal(signal.SIGINT, signal_handler)

if __name__ == "__main__":
    # This is for Windows multiprocessing support
    multiprocessing.freeze_support()
    # --------------------------------------------GET PARAMETER INPUTS
    PARSER = argparse.ArgumentParser(description="FreeDATA TNC")

    PARSER.add_argument(
        "--use-config",
        dest="configfile",
        action="store_true",
        help="Use the default config file config.ini",
    )
    PARSER.add_argument(
        "--mycall",
        dest="mycall",
        default="AA0AA",
        help="My callsign",
        type=str
    )
    PARSER.add_argument(
        "--ssid",
        dest="ssid_list",
        nargs="*",
        default=[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15],
        help="SSID list we are responding to",
        type=str,
    )
    PARSER.add_argument(
        "--mygrid",
        dest="mygrid",
        default="JN12AA",
        help="My gridsquare",
        type=str
    )
    PARSER.add_argument(
        "--rx",
        dest="audio_input_device",
        default=0,
        help="listening sound card",
        type=int,
    )
    PARSER.add_argument(
        "--tx",
        dest="audio_output_device",
        default=0,
        help="transmitting sound card",
        type=int,
    )
    PARSER.add_argument(
        "--port",
        dest="socket_port",
        default=3000,
        help="Socket port  in the range of 1024-65536",
        type=int,
    )
    PARSER.add_argument(
        "--deviceport",
        dest="hamlib_device_port",
        default="/dev/ttyUSB0",
        help="Hamlib device port",
        type=str,
    )
    PARSER.add_argument(
        "--devicename",
        dest="hamlib_device_name",
        default="2028",
        help="Hamlib device name",
        type=str,
    )
    PARSER.add_argument(
        "--serialspeed",
        dest="hamlib_serialspeed",
        choices=[1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200],
        default=9600,
        help="Serialspeed",
        type=int,
    )
    PARSER.add_argument(
        "--pttprotocol",
        dest="hamlib_ptt_type",
        choices=[
            "USB",
            "RIG",
            "RTS",
            "DTR",
            "CM108",
            "MICDATA",
            "PARALLEL",
            "DTR-H",
            "DTR-L",
            "NONE",
        ],
        default="USB",
        help="PTT Type",
        type=str,
    )
    PARSER.add_argument(
        "--pttport",
        dest="hamlib_ptt_port",
        default="/dev/ttyUSB0",
        help="PTT Port",
        type=str,
    )
    PARSER.add_argument(
        "--data_bits",
        dest="hamlib_data_bits",
        choices=[7, 8],
        default=8,
        help="Hamlib data bits",
        type=int,
    )
    PARSER.add_argument(
        "--stop_bits",
        dest="hamlib_stop_bits",
        choices=[1, 2],
        default=1,
        help="Hamlib stop bits",
        type=int,
    )
    PARSER.add_argument(
        "--handshake",
        dest="hamlib_handshake",
        default="None",
        help="Hamlib handshake",
        type=str,
    )
    PARSER.add_argument(
        "--radiocontrol",
        dest="hamlib_radiocontrol",
        choices=["disabled", "direct", "rigctl", "rigctld"],
        default="disabled",
        help="Set how you want to control your radio",
    )
    PARSER.add_argument(
        "--rigctld_port",
        dest="rigctld_port",
        default=4532,
        type=int,
        help="Set rigctld port",
    )
    PARSER.add_argument(
        "--rigctld_ip", dest="rigctld_ip", default="localhost", help="Set rigctld ip"
    )
    PARSER.add_argument(
        "--scatter",
        dest="send_scatter",
        action="store_true",
        help="Send scatter information via network",
    )
    PARSER.add_argument(
        "--fft",
        dest="send_fft",
        action="store_true",
        help="Send fft information via network",
    )
    PARSER.add_argument(
        "--500hz",
        dest="low_bandwidth_mode",
        action="store_true",
        help="Enable low bandwidth mode ( 500 Hz only )",
    )
    PARSER.add_argument(
        "--fsk",
        dest="enable_fsk",
        action="store_true",
        help="Enable FSK mode for ping, beacon and CQ",
    )
    PARSER.add_argument(
        "--qrv",
        dest="enable_respond_to_cq",
        action="store_true",
        help="Enable sending a QRV frame if CQ received",
    )
    PARSER.add_argument(
        "--tuning_range_fmin",
        dest="tuning_range_fmin",
        choices=[-50.0, -100.0, -150.0, -200.0, -250.0],
        default=-50.0,
        help="Tuning range fmin",
        type=float,
    )
    PARSER.add_argument(
        "--tuning_range_fmax",
        dest="tuning_range_fmax",
        choices=[50.0, 100.0, 150.0, 200.0, 250.0],
        default=50.0,
        help="Tuning range fmax",
        type=float,
    )
    PARSER.add_argument(
        "--tx-audio-level",
        dest="tx_audio_level",
        default=50,
        help="Set the tx audio level at an early stage",
        type=int,
    )
    PARSER.add_argument(
        "--rx-buffer-size",
        dest="rx_buffer_size",
        default=16,
        help="Set the maximum size of rx buffer.",
        type=int,
    )

    ARGS = PARSER.parse_args()
    if ARGS.configfile:
        # init config
        config = config.CONFIG().read_config()

        # additional step for being sure our callsign is correctly
        # in case we are not getting a station ssid
        # then we are forcing a station ssid = 0
        mycallsign = bytes(config['STATION']['mycall'], "utf-8")
        mycallsign = helpers.callsign_to_bytes(mycallsign)
        static.MYCALLSIGN = helpers.bytes_to_callsign(mycallsign)
        static.MYCALLSIGN_CRC = helpers.get_crc_24(static.MYCALLSIGN)

        static.SSID_LIST = [] ####
        static.MYGRID = bytes(config['STATION']['mygrid'], "utf-8")
        static.AUDIO_INPUT_DEVICE = int(config['AUDIO']['rx'])
        static.AUDIO_OUTPUT_DEVICE = int(config['AUDIO']['tx'])
        static.PORT = int(config['NETWORK']['tncport'])
        static.HAMLIB_DEVICE_NAME = config['RADIO']['devicename']
        static.HAMLIB_DEVICE_PORT = config['RADIO']['deviceport']
        static.HAMLIB_PTT_TYPE = config['RADIO']['pttprotocol']
        static.HAMLIB_PTT_PORT = config['RADIO']['pttport']
        static.HAMLIB_SERIAL_SPEED = str(config['RADIO']['serialspeed'])
        static.HAMLIB_DATA_BITS = str(config['RADIO']['data_bits'])
        static.HAMLIB_STOP_BITS = str(config['RADIO']['stop_bits'])
        static.HAMLIB_HANDSHAKE = config['RADIO']['handshake']
        static.HAMLIB_RADIOCONTROL = config['RADIO']['radiocontrol']
        static.HAMLIB_RIGCTLD_IP = config['RADIO']['rigctld_ip']
        static.HAMLIB_RIGCTLD_PORT = str(config['RADIO']['rigctld_port'])
        static.ENABLE_SCATTER = config['TNC']['scatter']
        static.ENABLE_FFT = config['TNC']['fft']
        static.ENABLE_FSK = False
        static.LOW_BANDWIDTH_MODE = config['TNC']['narrowband']
        static.TUNING_RANGE_FMIN = float(config['TNC']['fmin'])
        static.TUNING_RANGE_FMAX = float(config['TNC']['fmax'])
        static.TX_AUDIO_LEVEL = config['AUDIO']['txaudiolevel']
        static.RESPOND_TO_CQ = config['TNC']['qrv']
        static.RX_BUFFER_SIZE = config['TNC']['rxbuffersize']


    else:
        # additional step for being sure our callsign is correctly
        # in case we are not getting a station ssid
        # then we are forcing a station ssid = 0
        mycallsign = bytes(ARGS.mycall.upper(), "utf-8")
        mycallsign = helpers.callsign_to_bytes(mycallsign)
        static.MYCALLSIGN = helpers.bytes_to_callsign(mycallsign)
        static.MYCALLSIGN_CRC = helpers.get_crc_24(static.MYCALLSIGN)

        static.SSID_LIST = ARGS.ssid_list
        static.MYGRID = bytes(ARGS.mygrid, "utf-8")
        static.AUDIO_INPUT_DEVICE = ARGS.audio_input_device
        static.AUDIO_OUTPUT_DEVICE = ARGS.audio_output_device
        static.PORT = ARGS.socket_port
        static.HAMLIB_DEVICE_NAME = ARGS.hamlib_device_name
        static.HAMLIB_DEVICE_PORT = ARGS.hamlib_device_port
        static.HAMLIB_PTT_TYPE = ARGS.hamlib_ptt_type
        static.HAMLIB_PTT_PORT = ARGS.hamlib_ptt_port
        static.HAMLIB_SERIAL_SPEED = str(ARGS.hamlib_serialspeed)
        static.HAMLIB_DATA_BITS = str(ARGS.hamlib_data_bits)
        static.HAMLIB_STOP_BITS = str(ARGS.hamlib_stop_bits)
        static.HAMLIB_HANDSHAKE = ARGS.hamlib_handshake
        static.HAMLIB_RADIOCONTROL = ARGS.hamlib_radiocontrol
        static.HAMLIB_RIGCTLD_IP = ARGS.rigctld_ip
        static.HAMLIB_RIGCTLD_PORT = str(ARGS.rigctld_port)
        static.ENABLE_SCATTER = ARGS.send_scatter
        static.ENABLE_FFT = ARGS.send_fft
        static.ENABLE_FSK = ARGS.enable_fsk
        static.LOW_BANDWIDTH_MODE = ARGS.low_bandwidth_mode
        static.TUNING_RANGE_FMIN = ARGS.tuning_range_fmin
        static.TUNING_RANGE_FMAX = ARGS.tuning_range_fmax
        static.TX_AUDIO_LEVEL = ARGS.tx_audio_level
        static.RESPOND_TO_CQ = ARGS.enable_respond_to_cq
        static.RX_BUFFER_SIZE = ARGS.rx_buffer_size

    # we need to wait until we got all parameters from argparse first before we can load the other modules
    import sock

    # config logging
    try:
        if sys.platform == "linux":
            logging_path = os.getenv("HOME") + "/.config/" + "FreeDATA/" + "tnc"

        if sys.platform == "darwin":
            logging_path = (
                os.getenv("HOME")
                + "/Library/"
                + "Application Support/"
                + "FreeDATA/"
                + "tnc"
            )

        if sys.platform in ["win32", "win64"]:
            logging_path = os.getenv("APPDATA") + "/" + "FreeDATA/" + "tnc"

        if not os.path.exists(logging_path):
            os.makedirs(logging_path)
        log_handler.setup_logging(logging_path)
    except Exception as err:
        log.error("[DMN] logger init error", exception=err)

    log.info(
        "[TNC] Starting FreeDATA", author="DJ2LS", year="2022", version=static.VERSION
    )

    # start data handler
    data_handler.DATA()

    # start modem
    modem = modem.RF()

    # --------------------------------------------START CMD SERVER
    try:
        log.info("[TNC] Starting TCP/IP socket", port=static.PORT)
        # https://stackoverflow.com/a/16641793
        socketserver.TCPServer.allow_reuse_address = True
        cmdserver = sock.ThreadedTCPServer(
            (static.HOST, static.PORT), sock.ThreadedTCPRequestHandler
        )
        server_thread = threading.Thread(target=cmdserver.serve_forever)

        server_thread.daemon = True
        server_thread.start()

    except Exception as err:
        log.error("[TNC] Starting TCP/IP socket failed", port=static.PORT, e=err)
        sys.exit(1)
    while True:
        time.sleep(1)