#!/usr/bin/python3
# vim: set fileencoding=utf-8 :
# Copyright (C) 2006-2011 Guido Günther <agx@sigxcpu.org>
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, please see
#    <http://www.gnu.org/licenses/>
# END OF COPYRIGHT #

import os
import re
from setuptools import setup, find_packages

VERSION_PY_PATH = 'gbp/version.py'


def _parse_changelog():
    """Get version from debian changelog and write it to gbp/version.py"""
    with open("debian/changelog", encoding="utf-8") as f:
        line = f.readline()

    # Parse version from changelog without external tooling so it can work
    # on non Debian systems.
    m = re.match(".* \\(([0-9a-zA-Z.~\\-:+]+)\\) ", line)
    if m:
        return m.group(1)

    raise ValueError('Could not parse version from debian/changelog')


def _save_version_py(version):
    with open(VERSION_PY_PATH, 'w') as f:
        f.write('"The current gbp version number"\n')
        f.write('gbp_version = "%s"\n' % version)


def _load_version():
    with open(VERSION_PY_PATH, 'r') as f:
        version_py = f.read()
    version_py_globals = {}
    exec(version_py, version_py_globals)
    return version_py_globals['gbp_version']


def parse_and_fetch_version():
    if os.path.exists('debian/changelog'):
        version = _parse_changelog()
        _save_version_py(version)
        # we could return with the version here, but instead we check that
        # the file has been properly written and it can be loaded back

    version = _load_version()
    return version


def readme():
    with open('README.md') as file:
        return file.read()


def setup_requires():
    if os.getenv('WITHOUT_NOSETESTS'):
        return []
    else:
        return ['nose>=0.11.1', 'coverage>=2.85', 'nosexcover>=1.0.7']


setup(name="gbp",
      version=parse_and_fetch_version(),
      author=u'Guido Günther',
      author_email='agx@sigxcpu.org',
      url='https://honk.sigxcpu.org/piki/projects/git-buildpackage/',
      description='Suite to help with Debian packages in Git repositories',
      license='GPLv2+',
      long_description=readme(),
      classifiers=[
          'Environment :: Console',
          'Programming Language :: Python :: 3',
          'Topic :: Software Development :: Version Control',
          'Operating System :: POSIX :: Linux',
      ],
      scripts=['bin/git-pbuilder',
               'bin/gbp-builder-mock'],
      packages=find_packages(exclude=['tests', 'tests.*']),
      data_files=[("share/git-buildpackage/", ["gbp.conf"]), ],
      requires=['dateutil'],
      install_requires=[
          'python-dateutil',
      ],
      setup_requires=setup_requires(),
      python_requires='>=3.5',
      entry_points={
          'console_scripts': ['gbp=gbp.scripts.supercommand:supercommand'],
      },
      )
