import platform
import os.path as osp
from glob import glob
from setuptools import setup, find_packages
from sys import argv

import torch
from torch.utils.cpp_extension import CppExtension, CUDAExtension, CUDA_HOME

cxx_extra_compile_args = []
nvcc_extra_compile_args = []

TORCH_MAJOR = int(torch.__version__.split('.')[0])
TORCH_MINOR = int(torch.__version__.split('.')[1])
extra_compile_args = []
if (TORCH_MAJOR > 1) or (TORCH_MAJOR == 1 and TORCH_MINOR > 2):
    cxx_extra_compile_args += ['-DVERSION_GE_1_3']
    nvcc_extra_compile_args += ['-DVERSION_GE_1_3']
cmdclass = {'build_ext': torch.utils.cpp_extension.BuildExtension}

ext_modules = []
exts = [e.split(osp.sep)[-1][:-4] for e in glob(osp.join('cpu', '*.cpp'))]
ext_modules += [
    CppExtension(
        f'torch_sparse.{ext}_cpu', [f'cpu/{ext}.cpp'],
        extra_compile_args=cxx_extra_compile_args) for ext in exts
]

if CUDA_HOME is not None and '--cpu' not in argv:
    if platform.system() == 'Windows':
        extra_link_args = ['cusparse.lib']
    else:
        extra_link_args = ['-lcusparse', '-l', 'cusparse']

    exts = [e.split(osp.sep)[-1][:-4] for e in glob(osp.join('cuda', '*.cpp'))]
    ext_modules += [
        CUDAExtension(
            f'torch_sparse.{ext}_cuda',
            [f'cuda/{ext}.cpp', f'cuda/{ext}_kernel.cu'],
            extra_compile_args={
                'cxx': cxx_extra_compile_args,
                'nvcc': nvcc_extra_compile_args,
            },
            extra_link_args=extra_link_args,
        ) for ext in exts
    ]

__version__ = '0.4.3'
url = 'https://github.com/rusty1s/pytorch_sparse'

install_requires = ['scipy']
setup_requires = ['pytest-runner']
tests_require = ['pytest', 'pytest-cov']

setup(
    name='torch_sparse',
    version=__version__,
    description=('PyTorch Extension Library of Optimized Autograd Sparse '
                 'Matrix Operations'),
    author='Matthias Fey',
    author_email='matthias.fey@tu-dortmund.de',
    url=url,
    download_url='{}/archive/{}.tar.gz'.format(url, __version__),
    keywords=['pytorch', 'sparse', 'sparse-matrices', 'autograd'],
    install_requires=install_requires,
    setup_requires=setup_requires,
    tests_require=tests_require,
    ext_modules=ext_modules,
    cmdclass=cmdclass,
    packages=find_packages(),
)