#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Copyright (C) 2007-2011 Nathanael C. Fritz
# All Rights Reserved
#
# This software is licensed as described in the README.rst and LICENSE
# file, which you should have received as part of this distribution.

import os
from pathlib import Path
from subprocess import call, DEVNULL, check_output, CalledProcessError
from tempfile import TemporaryFile
try:
    from setuptools import setup
except ImportError:
    from distutils.core import setup

from run_tests import TestCommand
from slixmpp.version import __version__

VERSION = __version__
DESCRIPTION = ('Slixmpp is an elegant Python library for XMPP (aka Jabber, '
               'Google Talk, etc).')
with open('README.rst', encoding='utf8') as readme:
    LONG_DESCRIPTION = readme.read()

CLASSIFIERS = [
    'Intended Audience :: Developers',
    'License :: OSI Approved :: MIT License',
    'Programming Language :: Python',
    'Programming Language :: Python :: 3.5',
    'Programming Language :: Python :: 3.6',
    'Programming Language :: Python :: 3.7',
    'Topic :: Internet :: XMPP',
    'Topic :: Software Development :: Libraries :: Python Modules',
]

packages = [str(mod.parent) for mod in Path('slixmpp').rglob('__init__.py')]

def check_include(library_name, header):
    command = [os.environ.get('PKG_CONFIG', 'pkg-config'), '--cflags', library_name]
    try:
        cflags = check_output(command).decode('utf-8').split()
    except FileNotFoundError:
        print('pkg-config not found.')
        return False
    except CalledProcessError:
        # pkg-config already prints the missing libraries on stderr.
        return False
    command = [os.environ.get('CC', 'cc')] + cflags + ['-E', '-']
    with TemporaryFile('w+') as c_file:
        c_file.write('#include <%s>' % header)
        c_file.seek(0)
        try:
            return call(command, stdin=c_file, stdout=DEVNULL, stderr=DEVNULL) == 0
        except FileNotFoundError:
            print('%s headers not found.' % library_name)
            return False

HAS_PYTHON_HEADERS = check_include('python3', 'Python.h')
HAS_STRINGPREP_HEADERS = check_include('libidn', 'stringprep.h')

ext_modules = None
if HAS_PYTHON_HEADERS and HAS_STRINGPREP_HEADERS:
    try:
        from Cython.Build import cythonize
    except ImportError:
        print('Cython not found, falling back to the slow stringprep module.')
    else:
        ext_modules = cythonize('slixmpp/stringprep.pyx')
else:
    print('Falling back to the slow stringprep module.')

setup(
    name="slixmpp",
    version=VERSION,
    description=DESCRIPTION,
    long_description=LONG_DESCRIPTION,
    author='Florent Le Coz',
    author_email='louiz@louiz.org',
    url='https://dev.louiz.org/projects/slixmpp',
    license='MIT',
    platforms=['any'],
    packages=packages,
    ext_modules=ext_modules,
    install_requires=['aiodns>=1.0', 'pyasn1', 'pyasn1_modules'],
    classifiers=CLASSIFIERS,
    cmdclass={'test': TestCommand}
)