import os
import subprocess

from setuptools import setup
from setuptools.command.sdist import sdist


class eo_sdist(sdist):
    def run(self):
        print "creating VERSION file"
        if os.path.exists('VERSION'):
            os.remove('VERSION')
        version = get_version()
        version_file = open('VERSION', 'w')
        version_file.write(version)
        version_file.close()
        sdist.run(self)
        print "removing VERSION file"
        if os.path.exists('VERSION'):
            os.remove('VERSION')


def get_version():
    '''Use the VERSION, if absent generates a version with git describe, if not
       tag exists, take 0.0.0- and add the length of the commit log.
    '''
    if os.path.exists('VERSION'):
        with open('VERSION', 'r') as v:
            return v.read()
    if os.path.exists('.git'):
        p = subprocess.Popen(['git', 'describe', '--dirty', '--match=v*'], stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE)
        result = p.communicate()[0]
        if p.returncode == 0:
            result = result.split()[0][1:]
        else:
            result = '0.0.0-%s' % len(subprocess.check_output(
                ['git', 'rev-list', 'HEAD']).splitlines())
        return result.replace('-', '.').replace('.g', '+g')
    return '0.0.0'


setup(
    name = "django-jsonfield",
    version = get_version(),
    description = "JSONField for django models",
    long_description = open("README.rst").read(),
    url = "http://bitbucket.org/schinckel/django-jsonfield/",
    author = "Matthew Schinckel",
    author_email = "matt@schinckel.net",
    packages = [
        "jsonfield",
    ],
    classifiers = [
        'Programming Language :: Python',
        'Programming Language :: Python :: 3',
        'License :: OSI Approved :: BSD License',
        'Operating System :: OS Independent',
        'Framework :: Django',
    ],
    test_suite='tests.main',
    include_package_data=True,
    cmdclass={'sdist': eo_sdist},
)