#! /usr/bin/env python

import os
import re
import subprocess
from distutils.core import setup, Command
from distutils.command.build import build
from distutils.command.install import install
from distutils.command.clean import clean


# We probably ought to use debian.changelog, but let's avoid that dependency
# unless and until Germinate needs it somewhere else.
changelog_heading = re.compile(r'\w[-+0-9a-z.]* \(([^\(\) \t]+)\)')

with open('debian/changelog') as changelog:
    line = changelog.readline()
    match = changelog_heading.match(line)
    if match is None:
        raise ValueError(
            "Failed to parse first line of debian/changelog: '%s'" % line)
    germinate_version = match.group(1)


class build_extra(build):
    def __init__(self, dist):
        build.__init__(self, dist)

        self.user_options.extend([('pod2man', None, 'use pod2man')])

    def initialize_options(self):
        build.initialize_options(self)
        self.pod2man = False

    def finalize_options(self):
        def has_pod2man(command):
            return (self.pod2man == 'True' or
                    ("build_pod2man" in self.distribution.cmdclass and
                     self.pod2man != 'False'))

        build.finalize_options(self)
        self.sub_commands.append(('build_pod2man', has_pod2man))


class build_pod2man(Command):
    description = "build POD manual pages"

    user_options = [('pod-files=', None, 'POD files to build')]

    def initialize_options(self):
        self.pod_files = []

    def finalize_options(self):
        pass

    def run(self):
        for pod_file in self.distribution.scripts:
            if not pod_file.startswith('debhelper/'):
                continue
            if os.path.exists('%s.1' % pod_file):
                continue
            self.spawn(['pod2man', '-c', 'Debhelper', '-r', germinate_version,
                        pod_file, '%s.1' % pod_file])


class test_pychecker(Command):
    description = "run pychecker"

    user_options = []

    def initialize_options(self):
        pass

    def finalize_options(self):
        pass

    def run(self):
        self.spawn(['./run-pychecker'])


class install_extra(install):
    def run(self):
        install.run(self)

        self.spawn(['sed', '-i', 's/@VERSION@/%s/' % germinate_version,
                    os.path.join(self.install_lib, 'germinate', 'version.py')])


class clean_extra(clean):
    def run(self):
        clean.run(self)

        for path, dirs, files in os.walk('.'):
            for f in files:
                f = os.path.join(path, f)
                if f.endswith('.pyc'):
                    self.spawn(['rm', f])
                elif f.startswith('./debhelper') and f.endswith('.1'):
                    self.spawn(['rm', f])


perl_vendorlib = subprocess.Popen(
    ['perl', '-MConfig', '-e', 'print $Config{vendorlib}'],
    stdout=subprocess.PIPE).communicate()[0]
if not perl_vendorlib:
    raise ValueError("Failed to get $Config{vendorlib} from perl")
perllibdir = '%s/Debian/Debhelper/Sequence' % perl_vendorlib


setup(name='germinate',
      version=germinate_version,
      description='Expand dependencies in a list of seed packages',
      author='Scott James Remnant',
      author_email='scott@ubuntu.com',
      maintainer='Colin Watson',
      maintainer_email='cjwatson@ubuntu.com',
      url='https://wiki.ubuntu.com/Germinate',
      license='GNU GPL',
      packages=['germinate'],
      scripts=['bin/germinate',
               'bin/germinate-pkg-diff',
               'bin/germinate-update-metapackage',
               'debhelper/dh_germinate_clean',
               'debhelper/dh_germinate_metapackage'],
      data_files=[(perllibdir, ['debhelper/germinate.pm']),
                  ('/usr/share/man/man1',
                   ['man/germinate.1',
                    'man/germinate-pkg-diff.1',
                    'man/germinate-update-metapackage.1',
                    'debhelper/dh_germinate_clean.1',
                    'debhelper/dh_germinate_metapackage.1'])],
      cmdclass={'build': build_extra,
                'build_pod2man': build_pod2man,
                'test': test_pychecker,
                'install': install_extra,
                'clean': clean_extra},
      requires=['apt (>=0.7.93)'])