import os
import re
import sys
import sysconfig
import platform
import subprocess

from distutils.version import LooseVersion
from setuptools import setup, find_packages, Extension
from setuptools.command.build_ext import build_ext

with open("README.md", "r", encoding="utf-8") as fh:
    long_description = fh.read()


class CMakeExtension(Extension):
    def __init__(self, name, sourcedir=""):
        Extension.__init__(self, name, sources=[])
        self.sourcedir = os.path.abspath(sourcedir)


class CMakeBuild(build_ext):
    def run(self):
        try:
            out = subprocess.check_output(["cmake", "--version"])
        except OSError:
            raise RuntimeError(
                "CMake must be installed to build the following extensions: "
                + ", ".join(e.name for e in self.extensions)
            )

        if platform.system() == "Windows":
            cmake_version = LooseVersion(
                re.search(r"version\s*([\d.]+)", out.decode()).group(1)
            )
            if cmake_version < "3.1.0":
                raise RuntimeError("CMake >= 3.1.0 is required on Windows")

        for ext in self.extensions:
            self.build_extension(ext)

    def build_extension(self, ext):
        extdir = os.path.abspath(os.path.dirname(self.get_ext_fullpath(ext.name)))
        cmake_args = [
            "-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=" + extdir,
            "-DPYTHON_EXECUTABLE=" + sys.executable,
            #                      '-DCMAKE_CXX_COMPILER=/software/gcc-4.9-el6-x86_64/bin/g++'
        ]

        cfg = "Release"
        build_args = ["--config", cfg]

        if platform.system() == "Windows":
            cmake_args += [
                "-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{}={}".format(cfg.upper(), extdir)
            ]
            if sys.maxsize > 2**32:
                cmake_args += ["-A", "x64"]
            build_args += ["--", "/m"]
        else:
            cmake_args += ["-DCMAKE_BUILD_TYPE=" + cfg]
            build_args += ["--", "-j2"]

        env = os.environ.copy()
        env["CXXFLAGS"] = '{} -DVERSION_INFO=\\"{}\\"'.format(
            env.get("CXXFLAGS", ""), self.distribution.get_version()
        )
        if not os.path.exists(self.build_temp):
            os.makedirs(self.build_temp)
        subprocess.check_call(
            ["cmake", ext.sourcedir] + cmake_args, cwd=self.build_temp, env=env
        )
        subprocess.check_call(
            ["cmake", "--build", "."] + build_args, cwd=self.build_temp
        )
        print()  # Add an empty line for cleaner output


readme = open("README.md").read()

setup(
    name="pyCandleMAB",
    version="1.5.1",
    author="Piotr Wasilewski",
    author_email="support.md80@mabrobotics.pl",
    description="Python package for controlling MD80-based actuators",
    long_description=long_description,
    long_description_content_type="text/markdown",
    # Include lib such that recompilation under e.g. different numpy versions works
    packages=find_packages("src"),
    package_dir={"": "src", "lib": "lib"},
    package_data={
        "lib": [
            "lib/*",
        ]
    },
    ext_modules=[CMakeExtension("pyCandle")],
    cmdclass=dict(build_ext=CMakeBuild),
    zip_safe=False,
    include_package_data=True,
    classifiers=[
        "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
        "Natural Language :: English",
        "Programming Language :: Python :: 3.6",
        "Programming Language :: Python :: 3.7",
        "Programming Language :: Python :: 3.8",
        "Programming Language :: Python :: 3.9",
        "Programming Language :: Python :: 3.10",
        "Programming Language :: C++",
        "Intended Audience :: Science/Research",
        "Programming Language :: Python :: Implementation :: CPython",
        "Operating System :: POSIX :: Linux",
    ],
)
