#
# Copyright (C) 2018  Red Hat, Inc.
#
# 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, see <http://www.gnu.org/licenses/>.
#
import os
import shutil
import tempfile
import unittest

import configparser

from pylorax.api.config import configure, make_dnf_dirs
from pylorax.api.dnfbase import get_base_object, check_repos
from pylorax.api.projects import source_to_repo


class DnfbaseNoSystemReposTest(unittest.TestCase):
    @classmethod
    def setUpClass(self):
        self.tmp_dir = tempfile.mkdtemp(prefix="lorax.test.dnfbase.")
        conf_file = os.path.join(self.tmp_dir, 'test.conf')
        open(conf_file, 'w').write("""[composer]
# releasever different from the current default
releasever = 6
[dnf]
proxy = https://proxy.example.com
sslverify = False
[repos]
use_system_repos = False
""")

        # will read the above configuration
        config = configure(conf_file=conf_file, root_dir=self.tmp_dir)
        make_dnf_dirs(config)

        # will read composer config and store a dnf config file
        self.dbo = get_base_object(config)

        # will read the stored dnf config file
        self.dnfconf = configparser.ConfigParser()
        self.dnfconf.read([config.get("composer", "dnf_conf")])

    @classmethod
    def tearDownClass(self):
        shutil.rmtree(self.tmp_dir)

    def test_stores_dnf_proxy_from_composer_config(self):
        self.assertEqual('https://proxy.example.com', self.dnfconf.get('main', 'proxy'))

    def test_disables_sslverify_if_composer_disables_it(self):
        self.assertEqual(False, self.dnfconf.getboolean('main', 'sslverify'))

    def test_sets_releasever_from_composer(self):
        self.assertEqual('6', self.dbo.conf.releasever)

    def test_doesnt_use_system_repos(self):
        # no other repos defined for this test
        self.assertEqual({}, self.dbo.repos)


class DnfbaseSystemReposTest(unittest.TestCase):
    @classmethod
    def setUpClass(self):
        self.tmp_dir = tempfile.mkdtemp(prefix="lorax.test.dnfbase.")

        # will read the above configuration
        config = configure(root_dir=self.tmp_dir)
        make_dnf_dirs(config)

        # will read composer config and store a dnf config file
        self.dbo = get_base_object(config)

        # will read the stored dnf config file
        self.dnfconf = configparser.ConfigParser()
        self.dnfconf.read([config.get("composer", "dnf_conf")])

    @classmethod
    def tearDownClass(self):
        shutil.rmtree(self.tmp_dir)

    def test_uses_system_repos(self):
        # no other repos defined for this test
        self.assertTrue(len(self.dbo.repos) > 0)


class CreateDnfDirsTest(unittest.TestCase):
    @classmethod
    def setUpClass(self):
        self.tmp_dir = tempfile.mkdtemp(prefix="lorax.test.dnfbase.")

    @classmethod
    def tearDownClass(self):
        shutil.rmtree(self.tmp_dir)

    def test_creates_missing_dnf_root_directory(self):
        config = configure(test_config=True, root_dir=self.tmp_dir)

        # will create the above directory if missing
        make_dnf_dirs(config)

        self.assertTrue(os.path.exists(self.tmp_dir + '/var/tmp/composer/dnf/root'))

class DnfbaseCDNTest(unittest.TestCase):
    @classmethod
    def setUpClass(self):
        self.tmp_dir = tempfile.mkdtemp(prefix="lorax.test.dnfbase.")
        conf_file = os.path.join(self.tmp_dir, 'test.conf')
        open(conf_file, 'w').write("""[composer]
[repos]
use_system_repos = False
""")

        # will read the above configuration
        config = configure(conf_file=conf_file, root_dir=self.tmp_dir)
        make_dnf_dirs(config)

        # will read composer config and store a dnf config file
        self.dbo = get_base_object(config)

        # will read the stored dnf config file
        self.dnfconf = configparser.ConfigParser()
        self.dnfconf.read([config.get("composer", "dnf_conf")])

    @classmethod
    def tearDownClass(self):
        shutil.rmtree(self.tmp_dir)

    def test_check_repos_no_cdn(self, check_empty=True):
        """Test that no cdn.redhat.com returns True"""
        repo = source_to_repo({"name": "no-cdn",
                               "type": "yum-baseurl",
                               "check_ssl": True,
                               "check_gpg": True,
                               "url": "https://repo.example.com"}, self.dbo.conf)
        self.dbo.repos.add(repo)
        self.assertTrue(check_repos(self.dbo))
        del self.dbo.repos["no-cdn"]

        repo = source_to_repo({"name": "no-cdn-metalink",
                               "type": "yum-metalink",
                               "check_ssl": True,
                               "check_gpg": True,
                               "url": "https://repo.example.com"}, self.dbo.conf)
        self.dbo.repos.add(repo)
        self.assertTrue(check_repos(self.dbo))
        del self.dbo.repos["no-cdn-metalink"]

        repo = source_to_repo({"name": "no-cdn-mirrorlist",
                               "type": "yum-mirrorlist",
                               "check_ssl": True,
                               "check_gpg": True,
                               "url": "https://repo.example.com"}, self.dbo.conf)
        self.dbo.repos.add(repo)
        self.assertTrue(check_repos(self.dbo))
        del self.dbo.repos["no-cdn-mirrorlist"]

        if check_empty:
            self.assertTrue(self.dbo.repos == {})

    def test_check_repos_only_cdn(self):
        """Test that only cdn.redhat.com returns False"""
        repo = source_to_repo({"name": "only-cdn",
                               "type": "yum-baseurl",
                               "check_ssl": True,
                               "check_gpg": True,
                               "url": "https://cdn.redhat.com"}, self.dbo.conf)
        self.dbo.repos.add(repo)
        self.assertFalse(check_repos(self.dbo), self.dbo.repos)
        del self.dbo.repos["only-cdn"]

        repo = source_to_repo({"name": "only-cdn-metalink",
                               "type": "yum-metalink",
                               "check_ssl": True,
                               "check_gpg": True,
                               "url": "https://cdn.redhat.com"}, self.dbo.conf)
        self.dbo.repos.add(repo)
        self.assertFalse(check_repos(self.dbo), self.dbo.repos)
        del self.dbo.repos["only-cdn-metalink"]

        repo = source_to_repo({"name": "only-cdn-mirrorlist",
                               "type": "yum-mirrorlist",
                               "check_ssl": True,
                               "check_gpg": True,
                               "url": "https://cdn.redhat.com"}, self.dbo.conf)
        self.dbo.repos.add(repo)
        self.assertFalse(check_repos(self.dbo), self.dbo.repos)
        del self.dbo.repos["only-cdn-mirrorlist"]

        self.assertTrue(self.dbo.repos == {})

    def test_check_repos_with_cdn(self):
        """Test that adding a non-cdn repo to a cdn one returns True"""
        repo = source_to_repo({"name": "cdn",
                               "type": "yum-baseurl",
                               "check_ssl": True,
                               "check_gpg": True,
                               "url": "https://cdn.redhat.com"}, self.dbo.conf)
        self.dbo.repos.add(repo)

        # Use the no-cdn tests with a pre-populated dbo.repos
        self.test_check_repos_no_cdn(check_empty=False)
        del self.dbo.repos["cdn"]

        self.assertTrue(self.dbo.repos == {})

