"""Tests for distutils.command.sdist."""

import os
import pathlib
import shutil  # noqa: F401
import tarfile
import warnings
import zipfile
from distutils.archive_util import ARCHIVE_FORMATS
from distutils.command.sdist import sdist, show_formats
from distutils.core import Distribution
from distutils.errors import DistutilsOptionError
from distutils.filelist import FileList
from distutils.tests.test_config import BasePyPIRCCommandTestCase
from os.path import join
from textwrap import dedent

import jaraco.path
import path
import pytest
from more_itertools import ilen

from .compat.py38 import check_warnings
from .unix_compat import grp, pwd, require_uid_0, require_unix_id

SETUP_PY = """
from distutils.core import setup
import somecode

setup(name='fake')
"""

MANIFEST = """\
# file GENERATED by distutils, do NOT edit
README
buildout.cfg
inroot.txt
setup.py
data%(sep)sdata.dt
scripts%(sep)sscript.py
some%(sep)sfile.txt
some%(sep)sother_file.txt
somecode%(sep)s__init__.py
somecode%(sep)sdoc.dat
somecode%(sep)sdoc.txt
"""


@pytest.fixture(autouse=True)
def project_dir(request, pypirc):
    self = request.instance
    jaraco.path.build(
        {
            'somecode': {
                '__init__.py': '#',
            },
            'README': 'xxx',
            'setup.py': SETUP_PY,
        },
        self.tmp_dir,
    )
    with path.Path(self.tmp_dir):
        yield


def clean_lines(filepath):
    with pathlib.Path(filepath).open(encoding='utf-8') as f:
        yield from filter(None, map(str.strip, f))


class TestSDist(BasePyPIRCCommandTestCase):
    def get_cmd(self, metadata=None):
        """Returns a cmd"""
        if metadata is None:
            metadata = {
                'name': 'ns.fake--pkg',
                'version': '1.0',
                'url': 'xxx',
                'author': 'xxx',
                'author_email': 'xxx',
            }
        dist = Distribution(metadata)
        dist.script_name = 'setup.py'
        dist.packages = ['somecode']
        dist.include_package_data = True
        cmd = sdist(dist)
        cmd.dist_dir = 'dist'
        return dist, cmd

    @pytest.mark.usefixtures('needs_zlib')
    def test_prune_file_list(self):
        # this test creates a project with some VCS dirs and an NFS rename
        # file, then launches sdist to check they get pruned on all systems

        # creating VCS directories with some files in them
        os.mkdir(join(self.tmp_dir, 'somecode', '.svn'))
        self.write_file((self.tmp_dir, 'somecode', '.svn', 'ok.py'), 'xxx')

        os.mkdir(join(self.tmp_dir, 'somecode', '.hg'))
        self.write_file((self.tmp_dir, 'somecode', '.hg', 'ok'), 'xxx')

        os.mkdir(join(self.tmp_dir, 'somecode', '.git'))
        self.write_file((self.tmp_dir, 'somecode', '.git', 'ok'), 'xxx')

        self.write_file((self.tmp_dir, 'somecode', '.nfs0001'), 'xxx')

        # now building a sdist
        dist, cmd = self.get_cmd()

        # zip is available universally
        # (tar might not be installed under win32)
        cmd.formats = ['zip']

        cmd.ensure_finalized()
        cmd.run()

        # now let's check what we have
        dist_folder = join(self.tmp_dir, 'dist')
        files = os.listdir(dist_folder)
        assert files == ['ns_fake_pkg-1.0.zip']

        zip_file = zipfile.ZipFile(join(dist_folder, 'ns_fake_pkg-1.0.zip'))
        try:
            content = zip_file.namelist()
        finally:
            zip_file.close()

        # making sure everything has been pruned correctly
        expected = [
            '',
            'PKG-INFO',
            'README',
            'setup.py',
            'somecode/',
            'somecode/__init__.py',
        ]
        assert sorted(content) == ['ns_fake_pkg-1.0/' + x for x in expected]

    @pytest.mark.usefixtures('needs_zlib')
    @pytest.mark.skipif("not shutil.which('tar')")
    @pytest.mark.skipif("not shutil.which('gzip')")
    def test_make_distribution(self):
        # now building a sdist
        dist, cmd = self.get_cmd()

        # creating a gztar then a tar
        cmd.formats = ['gztar', 'tar']
        cmd.ensure_finalized()
        cmd.run()

        # making sure we have two files
        dist_folder = join(self.tmp_dir, 'dist')
        result = os.listdir(dist_folder)
        result.sort()
        assert result == ['ns_fake_pkg-1.0.tar', 'ns_fake_pkg-1.0.tar.gz']

        os.remove(join(dist_folder, 'ns_fake_pkg-1.0.tar'))
        os.remove(join(dist_folder, 'ns_fake_pkg-1.0.tar.gz'))

        # now trying a tar then a gztar
        cmd.formats = ['tar', 'gztar']

        cmd.ensure_finalized()
        cmd.run()

        result = os.listdir(dist_folder)
        result.sort()
        assert result == ['ns_fake_pkg-1.0.tar', 'ns_fake_pkg-1.0.tar.gz']

    @pytest.mark.usefixtures('needs_zlib')
    def test_add_defaults(self):
        # https://bugs.python.org/issue2279

        # add_default should also include
        # data_files and package_data
        dist, cmd = self.get_cmd()

        # filling data_files by pointing files
        # in package_data
        dist.package_data = {'': ['*.cfg', '*.dat'], 'somecode': ['*.txt']}
        self.write_file((self.tmp_dir, 'somecode', 'doc.txt'), '#')
        self.write_file((self.tmp_dir, 'somecode', 'doc.dat'), '#')

        # adding some data in data_files
        data_dir = join(self.tmp_dir, 'data')
        os.mkdir(data_dir)
        self.write_file((data_dir, 'data.dt'), '#')
        some_dir = join(self.tmp_dir, 'some')
        os.mkdir(some_dir)
        # make sure VCS directories are pruned (#14004)
        hg_dir = join(self.tmp_dir, '.hg')
        os.mkdir(hg_dir)
        self.write_file((hg_dir, 'last-message.txt'), '#')
        # a buggy regex used to prevent this from working on windows (#6884)
        self.write_file((self.tmp_dir, 'buildout.cfg'), '#')
        self.write_file((self.tmp_dir, 'inroot.txt'), '#')
        self.write_file((some_dir, 'file.txt'), '#')
        self.write_file((some_dir, 'other_file.txt'), '#')

        dist.data_files = [
            ('data', ['data/data.dt', 'buildout.cfg', 'inroot.txt', 'notexisting']),
            'some/file.txt',
            'some/other_file.txt',
        ]

        # adding a script
        script_dir = join(self.tmp_dir, 'scripts')
        os.mkdir(script_dir)
        self.write_file((script_dir, 'script.py'), '#')
        dist.scripts = [join('scripts', 'script.py')]

        cmd.formats = ['zip']
        cmd.use_defaults = True

        cmd.ensure_finalized()
        cmd.run()

        # now let's check what we have
        dist_folder = join(self.tmp_dir, 'dist')
        files = os.listdir(dist_folder)
        assert files == ['ns_fake_pkg-1.0.zip']

        zip_file = zipfile.ZipFile(join(dist_folder, 'ns_fake_pkg-1.0.zip'))
        try:
            content = zip_file.namelist()
        finally:
            zip_file.close()

        # making sure everything was added
        expected = [
            '',
            'PKG-INFO',
            'README',
            'buildout.cfg',
            'data/',
            'data/data.dt',
            'inroot.txt',
            'scripts/',
            'scripts/script.py',
            'setup.py',
            'some/',
            'some/file.txt',
            'some/other_file.txt',
            'somecode/',
            'somecode/__init__.py',
            'somecode/doc.dat',
            'somecode/doc.txt',
        ]
        assert sorted(content) == ['ns_fake_pkg-1.0/' + x for x in expected]

        # checking the MANIFEST
        manifest = pathlib.Path(self.tmp_dir, 'MANIFEST').read_text(encoding='utf-8')
        assert manifest == MANIFEST % {'sep': os.sep}

    @staticmethod
    def warnings(messages, prefix='warning: '):
        return [msg for msg in messages if msg.startswith(prefix)]

    @pytest.mark.usefixtures('needs_zlib')
    def test_metadata_check_option(self, caplog):
        # testing the `medata-check` option
        dist, cmd = self.get_cmd(metadata={})

        # this should raise some warnings !
        # with the `check` subcommand
        cmd.ensure_finalized()
        cmd.run()
        assert len(self.warnings(caplog.messages, 'warning: check: ')) == 1

        # trying with a complete set of metadata
        caplog.clear()
        dist, cmd = self.get_cmd()
        cmd.ensure_finalized()
        cmd.metadata_check = 0
        cmd.run()
        assert len(self.warnings(caplog.messages, 'warning: check: ')) == 0

    def test_check_metadata_deprecated(self):
        # makes sure make_metadata is deprecated
        dist, cmd = self.get_cmd()
        with check_warnings() as w:
            warnings.simplefilter("always")
            cmd.check_metadata()
            assert len(w.warnings) == 1

    def test_show_formats(self, capsys):
        show_formats()

        # the output should be a header line + one line per format
        num_formats = len(ARCHIVE_FORMATS.keys())
        output = [
            line
            for line in capsys.readouterr().out.split('\n')
            if line.strip().startswith('--formats=')
        ]
        assert len(output) == num_formats

    def test_finalize_options(self):
        dist, cmd = self.get_cmd()
        cmd.finalize_options()

        # default options set by finalize
        assert cmd.manifest == 'MANIFEST'
        assert cmd.template == 'MANIFEST.in'
        assert cmd.dist_dir == 'dist'

        # formats has to be a string splitable on (' ', ',') or
        # a stringlist
        cmd.formats = 1
        with pytest.raises(DistutilsOptionError):
            cmd.finalize_options()
        cmd.formats = ['zip']
        cmd.finalize_options()

        # formats has to be known
        cmd.formats = 'supazipa'
        with pytest.raises(DistutilsOptionError):
            cmd.finalize_options()

    # the following tests make sure there is a nice error message instead
    # of a traceback when parsing an invalid manifest template

    def _check_template(self, content, caplog):
        dist, cmd = self.get_cmd()
        os.chdir(self.tmp_dir)
        self.write_file('MANIFEST.in', content)
        cmd.ensure_finalized()
        cmd.filelist = FileList()
        cmd.read_template()
        assert len(self.warnings(caplog.messages)) == 1

    def test_invalid_template_unknown_command(self, caplog):
        self._check_template('taunt knights *', caplog)

    def test_invalid_template_wrong_arguments(self, caplog):
        # this manifest command takes one argument
        self._check_template('prune', caplog)

    @pytest.mark.skipif("platform.system() != 'Windows'")
    def test_invalid_template_wrong_path(self, caplog):
        # on Windows, trailing slashes are not allowed
        # this used to crash instead of raising a warning: #8286
        self._check_template('include examples/', caplog)

    @pytest.mark.usefixtures('needs_zlib')
    def test_get_file_list(self):
        # make sure MANIFEST is recalculated
        dist, cmd = self.get_cmd()

        # filling data_files by pointing files in package_data
        dist.package_data = {'somecode': ['*.txt']}
        self.write_file((self.tmp_dir, 'somecode', 'doc.txt'), '#')
        cmd.formats = ['gztar']
        cmd.ensure_finalized()
        cmd.run()

        assert ilen(clean_lines(cmd.manifest)) == 5

        # adding a file
        self.write_file((self.tmp_dir, 'somecode', 'doc2.txt'), '#')

        # make sure build_py is reinitialized, like a fresh run
        build_py = dist.get_command_obj('build_py')
        build_py.finalized = False
        build_py.ensure_finalized()

        cmd.run()

        manifest2 = list(clean_lines(cmd.manifest))

        # do we have the new file in MANIFEST ?
        assert len(manifest2) == 6
        assert 'doc2.txt' in manifest2[-1]

    @pytest.mark.usefixtures('needs_zlib')
    def test_manifest_marker(self):
        # check that autogenerated MANIFESTs have a marker
        dist, cmd = self.get_cmd()
        cmd.ensure_finalized()
        cmd.run()

        assert (
            next(clean_lines(cmd.manifest))
            == '# file GENERATED by distutils, do NOT edit'
        )

    @pytest.mark.usefixtures('needs_zlib')
    def test_manifest_comments(self):
        # make sure comments don't cause exceptions or wrong includes
        contents = dedent(
            """\
            # bad.py
            #bad.py
            good.py
            """
        )
        dist, cmd = self.get_cmd()
        cmd.ensure_finalized()
        self.write_file((self.tmp_dir, cmd.manifest), contents)
        self.write_file((self.tmp_dir, 'good.py'), '# pick me!')
        self.write_file((self.tmp_dir, 'bad.py'), "# don't pick me!")
        self.write_file((self.tmp_dir, '#bad.py'), "# don't pick me!")
        cmd.run()
        assert cmd.filelist.files == ['good.py']

    @pytest.mark.usefixtures('needs_zlib')
    def test_manual_manifest(self):
        # check that a MANIFEST without a marker is left alone
        dist, cmd = self.get_cmd()
        cmd.formats = ['gztar']
        cmd.ensure_finalized()
        self.write_file((self.tmp_dir, cmd.manifest), 'README.manual')
        self.write_file(
            (self.tmp_dir, 'README.manual'),
            'This project maintains its MANIFEST file itself.',
        )
        cmd.run()
        assert cmd.filelist.files == ['README.manual']

        assert list(clean_lines(cmd.manifest)) == ['README.manual']

        archive_name = join(self.tmp_dir, 'dist', 'ns_fake_pkg-1.0.tar.gz')
        archive = tarfile.open(archive_name)
        try:
            filenames = [tarinfo.name for tarinfo in archive]
        finally:
            archive.close()
        assert sorted(filenames) == [
            'ns_fake_pkg-1.0',
            'ns_fake_pkg-1.0/PKG-INFO',
            'ns_fake_pkg-1.0/README.manual',
        ]

    @pytest.mark.usefixtures('needs_zlib')
    @require_unix_id
    @require_uid_0
    @pytest.mark.skipif("not shutil.which('tar')")
    @pytest.mark.skipif("not shutil.which('gzip')")
    def test_make_distribution_owner_group(self):
        # now building a sdist
        dist, cmd = self.get_cmd()

        # creating a gztar and specifying the owner+group
        cmd.formats = ['gztar']
        cmd.owner = pwd.getpwuid(0)[0]
        cmd.group = grp.getgrgid(0)[0]
        cmd.ensure_finalized()
        cmd.run()

        # making sure we have the good rights
        archive_name = join(self.tmp_dir, 'dist', 'ns_fake_pkg-1.0.tar.gz')
        archive = tarfile.open(archive_name)
        try:
            for member in archive.getmembers():
                assert member.uid == 0
                assert member.gid == 0
        finally:
            archive.close()

        # building a sdist again
        dist, cmd = self.get_cmd()

        # creating a gztar
        cmd.formats = ['gztar']
        cmd.ensure_finalized()
        cmd.run()

        # making sure we have the good rights
        archive_name = join(self.tmp_dir, 'dist', 'ns_fake_pkg-1.0.tar.gz')
        archive = tarfile.open(archive_name)

        # note that we are not testing the group ownership here
        # because, depending on the platforms and the container
        # rights (see #7408)
        try:
            for member in archive.getmembers():
                assert member.uid == os.getuid()
        finally:
            archive.close()