# Copyright 2010-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

import tempfile

from portage import os
from portage import shutil
from portage import _unicode_encode
from portage.tests import TestCase
from portage.util import getconfig
from portage.exception import ParseError


class GetConfigTestCase(TestCase):
    """
    Test that getconfig() produces that same result as bash would when
    sourcing the same input.
    """

    _cases = {
        "FETCHCOMMAND": 'wget -t 3 -T 60 --passive-ftp -O "${DISTDIR}/${FILE}" "${URI}"',
        "FETCHCOMMAND_RSYNC": 'rsync -LtvP "${URI}" "${DISTDIR}/${FILE}"',
        "FETCHCOMMAND_SFTP": 'bash -c "x=\\${2#sftp://} ; host=\\${x%%/*} ; port=\\${host##*:} ; host=\\${host%:*} ; [[ \\${host} = \\${port} ]] && port= ; eval \\"declare -a ssh_opts=(\\${3})\\" ; exec sftp \\${port:+-P \\${port}} \\"\\${ssh_opts[@]}\\" \\"\\${host}:/\\${x#*/}\\" \\"\\$1\\"" sftp "${DISTDIR}/${FILE}" "${URI}" "${PORTAGE_SSH_OPTS}"',
        "FETCHCOMMAND_SSH": 'bash -c "x=\\${2#ssh://} ; host=\\${x%%/*} ; port=\\${host##*:} ; host=\\${host%:*} ; [[ \\${host} = \\${port} ]] && port= ; exec rsync --rsh=\\"ssh \\${port:+-p\\${port}} \\${3}\\" -avP \\"\\${host}:/\\${x#*/}\\" \\"\\$1\\"" rsync "${DISTDIR}/${FILE}" "${URI}" "${PORTAGE_SSH_OPTS}"',
        "PORTAGE_ELOG_MAILSUBJECT": "[portage] ebuild log for ${PACKAGE} on ${HOST}",
    }

    def testGetConfig(self):
        make_globals_file = os.path.join(str(self.cnf_path), "make.globals")
        d = getconfig(make_globals_file)
        for k, v in self._cases.items():
            self.assertEqual(d[k], v)

    def testGetConfigSourceLex(self):
        try:
            tempdir = tempfile.mkdtemp()
            make_conf_file = os.path.join(tempdir, "make.conf")
            with open(make_conf_file, "w") as f:
                f.write('source "${DIR}/sourced_file"\n')
            sourced_file = os.path.join(tempdir, "sourced_file")
            with open(sourced_file, "w") as f:
                f.write('PASSES_SOURCING_TEST="True"\n')

            d = getconfig(make_conf_file, allow_sourcing=True, expand={"DIR": tempdir})

            # PASSES_SOURCING_TEST should exist in getconfig result.
            self.assertTrue(d is not None)
            self.assertEqual("True", d["PASSES_SOURCING_TEST"])

            # With allow_sourcing=True and empty expand map, this should
            # throw a FileNotFound exception.
            self.assertRaisesMsg(
                "An empty expand map should throw an exception",
                ParseError,
                getconfig,
                make_conf_file,
                allow_sourcing=True,
                expand={},
            )
        finally:
            shutil.rmtree(tempdir)

    def testGetConfigProfileEnv(self):
        # Test the mode which is used to parse /etc/env.d and /etc/profile.env.

        cases = {
            "LESS_TERMCAP_mb": r"$\E[01;31m",  # bug #410625
        }

        with tempfile.NamedTemporaryFile(mode="wb") as f:
            # Format like env_update formats /etc/profile.env.
            for k, v in cases.items():
                if v.startswith("$") and not v.startswith("${"):
                    line = f"export {k}=$'{v[1:]}'\n"
                else:
                    line = f"export {k}='{v}'\n"
                f.write(_unicode_encode(line))
            f.flush()

            d = getconfig(f.name, expand=False)
            for k, v in cases.items():
                self.assertEqual(d.get(k), v)
