# -*- coding: utf-8 -*-

# libolm python bindings
# Copyright © 2018 Damir Jelić <poljar@termina.org.uk>
#
# Permission to use, copy, modify, and/or distribute this software for
# any purpose with or without fee is hereby granted, provided that the
# above copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
# RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
# CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

import os
import subprocess

from cffi import FFI

ffibuilder = FFI()
PATH = os.path.dirname(__file__)

DEVELOP = os.environ.get("DEVELOP")

compile_args = ["-I../include"]
link_args = ["-L../build"]

if DEVELOP and DEVELOP.lower() in ["yes", "true", "1"]:
    link_args.append('-Wl,-rpath=../build')

# If libolm is compiled statically, we may need to link to the C++ standard
# library dynamically.  This flag allows passing the required linker flag to do
# so.
CXX_LIB = os.environ.get("CXX_LIB")
if CXX_LIB:
    link_args.extend(CXX_LIB.split())

headers_build = subprocess.Popen("make headers", shell=True)
headers_build.wait()

ffibuilder.set_source(
    "_libolm",
    r"""
        #include <olm/olm.h>
        #include <olm/inbound_group_session.h>
        #include <olm/outbound_group_session.h>
        #include <olm/pk.h>
        #include <olm/sas.h>
    """,
    libraries=["olm"],
    extra_compile_args=compile_args,
    extra_link_args=link_args)

with open(os.path.join(PATH, "include/olm/error.h")) as f:
    ffibuilder.cdef(f.read(), override=True)

with open(os.path.join(PATH, "include/olm/olm.h")) as f:
    ffibuilder.cdef(f.read(), override=True)

with open(os.path.join(PATH, "include/olm/pk.h")) as f:
    ffibuilder.cdef(f.read(), override=True)

with open(os.path.join(PATH, "include/olm/sas.h")) as f:
    ffibuilder.cdef(f.read(), override=True)

if __name__ == "__main__":
    ffibuilder.compile(verbose=True)