#!/usr/bin/env python

import os
import pkg_resources
import sys

from setuptools import setup


if sys.version_info[:3] == (3, 5, 0):
    if not int(os.getenv('CHAINER_PYTHON_350_FORCE', '0')):
        msg = """
Chainer does not work with Python 3.5.0.

We strongly recommend to use another version of Python.
If you want to use Chainer with Python 3.5.0 at your own risk,
set CHAINER_PYTHON_350_FORCE environment variable to 1."""
        print(msg)
        sys.exit(1)


def cupy_requirement(pkg):
    return '{} >=4.4.0, <5.0.0'.format(pkg)


requirements = {
    'install': [
        'filelock',
        'numpy>=1.9.0',
        'protobuf>=3.0.0',
        'six>=1.9.0',
    ],
    'cuda': [
        cupy_requirement('cupy'),
    ],
    'stylecheck': [
        'autopep8',
        'hacking==1.0.0',
    ],
    'test': [
        'pytest',
        'mock',
    ],
    'doctest': [
        'matplotlib',
        'theano',
    ],
    'docs': [
        'sphinx',
        'sphinx_rtd_theme',
    ],
    'travis': [
        '-r stylecheck',
        '-r test',
        '-r docs',
        # pytest-timeout>=1.3.0 requires pytest>=3.6.
        # TODO(niboshi): Consider upgrading pytest to >=3.6
        'pytest-timeout<1.3.0',
        'pytest-cov',
        'theano',
        'h5py',
        'pillow',
    ],
    'appveyor': [
        '-r test',
        # pytest-timeout>=1.3.0 requires pytest>=3.6.
        # TODO(niboshi): Consider upgrading pytest to >=3.6
        'pytest-timeout<1.3.0',
        'pytest-cov',
    ],
}


def reduce_requirements(key):
    # Resolve recursive requirements notation (-r)
    reqs = requirements[key]
    resolved_reqs = []
    for req in reqs:
        if req.startswith('-r'):
            depend_key = req[2:].lstrip()
            reduce_requirements(depend_key)
            resolved_reqs += requirements[depend_key]
        else:
            resolved_reqs.append(req)
    requirements[key] = resolved_reqs


for k in requirements.keys():
    reduce_requirements(k)


extras_require = {k: v for k, v in requirements.items() if k != 'install'}


setup_requires = []
install_requires = requirements['install']
tests_require = requirements['test']


def find_any_distribution(pkgs):
    for pkg in pkgs:
        try:
            return pkg_resources.get_distribution(pkg)
        except pkg_resources.DistributionNotFound:
            pass
    return None


# Currently cupy provides source package (cupy) and binary wheel packages
# (cupy-cudaXX). Chainer can use any one of these packages.
cupy_pkg = find_any_distribution([
    'cupy-cuda92',
    'cupy-cuda91',
    'cupy-cuda90',
    'cupy-cuda80',
    'cupy',
])
if cupy_pkg is not None:
    req = cupy_requirement(cupy_pkg.project_name)
    install_requires.append(req)
    print('Use %s' % req)
else:
    print('No CuPy installation detected')

here = os.path.abspath(os.path.dirname(__file__))
# Get __version__ variable
exec(open(os.path.join(here, 'chainer', '_version.py')).read())


setup(
    name='chainer',
    version=__version__,  # NOQA
    description='A flexible framework of neural networks',
    author='Seiya Tokui',
    author_email='tokui@preferred.jp',
    url='https://chainer.org/',
    license='MIT License',
    packages=['chainer',
              'chainer.backends',
              'chainer.dataset',
              'chainer.datasets',
              'chainer.exporters',
              'chainer.functions',
              'chainer.functions.activation',
              'chainer.functions.array',
              'chainer.functions.connection',
              'chainer.functions.evaluation',
              'chainer.functions.loss',
              'chainer.functions.math',
              'chainer.functions.noise',
              'chainer.functions.normalization',
              'chainer.functions.pooling',
              'chainer.functions.theano',
              'chainer.functions.util',
              'chainer.function_hooks',
              'chainer.iterators',
              'chainer.initializers',
              'chainer.links',
              'chainer.links.activation',
              'chainer.links.caffe',
              'chainer.links.caffe.protobuf3',
              'chainer.links.connection',
              'chainer.links.loss',
              'chainer.links.model',
              'chainer.links.model.vision',
              'chainer.links.normalization',
              'chainer.links.theano',
              'chainer.optimizers',
              'chainer.optimizer_hooks',
              'chainer.serializers',
              'chainer.testing',
              'chainer.training',
              'chainer.training.extensions',
              'chainer.training.triggers',
              'chainer.training.updaters',
              'chainer.utils'],
    zip_safe=False,
    setup_requires=setup_requires,
    install_requires=install_requires,
    tests_require=tests_require,
    extras_require=extras_require,
)