#!/usr/bin/env python2

from ctypes import *

LIBSSS7_PATH = "../linux/libsss7.so"
LIBSSS7_PAYLOAD_SIZE = 16

_LIB_SSS7 = cdll.LoadLibrary(LIBSSS7_PATH)

# int libsss7_start(char *serialport);
_LIB_SSS7.libsss7_start.argtypes = [c_char_p]
_LIB_SSS7.libsss7_start.restype = c_int

# int libsss7_can_send(void);
_LIB_SSS7.libsss7_can_send.argtypes = None
_LIB_SSS7.libsss7_can_send.restype = c_int

# void libsss7_send(uint8_t msg[LIBSSS7_PAYLOAD_SIZE]);
_LIB_SSS7.libsss7_send.argtypes = [c_ubyte * LIBSSS7_PAYLOAD_SIZE]
_LIB_SSS7.libsss7_send.restype = c_int

# int libsss7_send_failed(void);
_LIB_SSS7.libsss7_send_failed.argtypes = None
_LIB_SSS7.libsss7_send_failed.restype = c_int

# int libsss7_has_received(void);
_LIB_SSS7.libsss7_has_received.argtypes = None
_LIB_SSS7.libsss7_has_received.restype = c_int

# libsss7_get_received(uint8_t *msg);
_LIB_SSS7.libsss7_get_received = [c_ubyte * LIBSSS7_PAYLOAD_SIZE]
_LIB_SSS7.libsss7_get_received.restype = c_int

# void libsss7_stop();
_LIB_SSS7.libsss7_stop.argtypes = None
_LIB_SSS7.libsss7_stop.restype = None

class _SSS7(object):

    def start(self, port):
        return _LIB_SSS7.libsss7_start(port) == 0

    def can_send():
        return _LIB_SSS7.libsss7_can_send() == 1

    def send(msg):
        _LIB_SSS7.libsss7_send(msg)

    def send_failed():
        return _LIB_SSS7.libsss7_send_failed() == 1

    def has_received():
        return _LIB_SSS7.libsss7_get_received()

    def get_received():
        payload = [0] * LIBSSS7_PAYLOAD_SIZE
        _LIB_SSS7.libsss7_get_received(payload)
        return payload

    def stop():
        _LIB_SSS7.libsss7_stop()