#!/usr/bin/env python
import os
import re
import sys
import platform
import subprocess

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


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))
        
        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]
            
        cfg = 'Debug' if self.debug else 'Release'
        build_args = ['--config', cfg]
                      
                      
        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)
        try:
            subprocess.check_call(['cmake', '--build', '.', '--target', ext.name] + build_args, cwd=self.build_temp)
        except subprocess.CalledProcessError as e:
            if e.output:
                raise RuntimeError("CMake build returned with an error: " + e.output)
            
            print(e.stdout)

setup(
      name="stormpy",
      version="0.9",
      author="M. Volk",
      author_email="matthias.volk@cs.rwth-aachen.de",
      maintainer="S. Junges",
      maintainer_email="sebastian.junges@cs.rwth-aachen.de",
      url="http://moves.rwth-aachen.de",
      description="stormpy - Python Bindings for Storm",
      packages=['stormpy', 'stormpy.info', 'stormpy.expressions', 'stormpy.logic', 'stormpy.storage'],
      package_dir={'':'lib'},
      ext_package='stormpy',
      ext_modules=[CMakeExtension('stormpy.core'), CMakeExtension('stormpy.info'),CMakeExtension('stormpy.expressions'), CMakeExtension('stormpy.logic'), CMakeExtension('stormpy.storage')],
      cmdclass=dict(build_ext=CMakeBuild),
      zip_safe=False
)