"""OpenAPI core setup module"""
import os
import re
import sys

from setuptools import setup, find_packages
from setuptools.command.test import test as TestCommand


def read_requirements(filename):
    """Open a requirements file and return list of its lines."""
    contents = read_file(filename).strip('\n')
    return contents.split('\n') if contents else []


def read_file(filename):
    """Open and a file, read it and return its contents."""
    path = os.path.join(os.path.dirname(__file__), filename)
    with open(path) as f:
        return f.read()


def get_metadata(init_file):
    """Read metadata from a given file and return a dictionary of them"""
    return dict(re.findall("__([a-z]+)__ = '([^']+)'", init_file))


def install_requires():
    py27 = '_2.7' if sys.version_info < (3,) else ''
    return read_requirements('requirements{}.txt'.format(py27))


class PyTest(TestCommand):

    """Command to run unit tests after in-place build."""

    def finalize_options(self):
        TestCommand.finalize_options(self)
        self.test_args = [
            '-sv',
            '--pep8',
            '--flakes',
            '--junitxml', 'reports/junit.xml',
            '--cov', 'openapi_core',
            '--cov-report', 'term-missing',
            '--cov-report', 'xml:reports/coverage.xml',
            'tests',
        ]
        self.test_suite = True

    def run_tests(self):
        # Importing here, `cause outside the eggs aren't loaded.
        import pytest
        errno = pytest.main(self.test_args)
        sys.exit(errno)


init_path = os.path.join('openapi_core', '__init__.py')
init_py = read_file(init_path)
metadata = get_metadata(init_py)


setup(
    name='openapi-core',
    version=metadata['version'],
    author=metadata['author'],
    author_email=metadata['email'],
    url=metadata['url'],
    long_description=read_file("README.rst"),
    packages=find_packages(include=('openapi_core*',)),
    include_package_data=True,
    classifiers=[
        "Development Status :: 4 - Beta",
        'Intended Audience :: Developers',
        "Topic :: Software Development :: Libraries :: Python Modules",
        "Operating System :: OS Independent",
        'Programming Language :: Python :: 2.7',
        'Programming Language :: Python :: 3.4',
        'Programming Language :: Python :: 3.5',
        'Programming Language :: Python :: 3.6',
        'Programming Language :: Python :: 3.7',
        'Topic :: Software Development :: Libraries',
    ],
    install_requires=install_requires(),
    tests_require=read_requirements('requirements_dev.txt'),
    extras_require={
        'flask':  ["werkzeug"],
    },
    cmdclass={'test': PyTest},
    zip_safe=False,
)