# Copyright (C) 2010-2020 RhodeCode GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License, version 3
# (only), as published by the Free Software Foundation.
#
# 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 Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# This program is dual-licensed. If you wish to learn more about the
# RhodeCode Enterprise Edition, including its added features, Support services,
# and proprietary license terms, please see https://rhodecode.com/licenses/

import os
import platform

from rhodecode.model import init_model


def configure_vcs(config):
    """
    Patch VCS config with some RhodeCode specific stuff
    """
    from rhodecode.lib.vcs import conf
    import rhodecode.lib.vcs.conf.settings

    conf.settings.BACKENDS = {
        'hg': 'rhodecode.lib.vcs.backends.hg.MercurialRepository',
        'git': 'rhodecode.lib.vcs.backends.git.GitRepository',
        'svn': 'rhodecode.lib.vcs.backends.svn.SubversionRepository',
    }

    conf.settings.HOOKS_PROTOCOL = config['vcs.hooks.protocol']
    conf.settings.HOOKS_HOST = config['vcs.hooks.host']
    conf.settings.HOOKS_DIRECT_CALLS = config['vcs.hooks.direct_calls']
    conf.settings.DEFAULT_ENCODINGS = config['default_encoding']
    conf.settings.ALIASES[:] = config['vcs.backends']
    conf.settings.SVN_COMPATIBLE_VERSION = config['vcs.svn.compatible_version']


def initialize_database(config):
    from rhodecode.lib.utils2 import engine_from_config, get_encryption_key
    engine = engine_from_config(config, 'sqlalchemy.db1.')
    init_model(engine, encryption_key=get_encryption_key(config))


def initialize_test_environment(settings, test_env=None):
    if test_env is None:
        test_env = not int(os.environ.get('RC_NO_TMP_PATH', 0))

    from rhodecode.lib.utils import (
        create_test_directory, create_test_database, create_test_repositories,
        create_test_index)
    from rhodecode.tests import TESTS_TMP_PATH
    from rhodecode.lib.vcs.backends.hg import largefiles_store
    from rhodecode.lib.vcs.backends.git import lfs_store

    # test repos
    if test_env:
        create_test_directory(TESTS_TMP_PATH)
        # large object stores
        create_test_directory(largefiles_store(TESTS_TMP_PATH))
        create_test_directory(lfs_store(TESTS_TMP_PATH))

        create_test_database(TESTS_TMP_PATH, settings)
        create_test_repositories(TESTS_TMP_PATH, settings)
        create_test_index(TESTS_TMP_PATH, settings)


def get_vcs_server_protocol(config):
    return config['vcs.server.protocol']


def set_instance_id(config):
    """
    Sets a dynamic generated config['instance_id'] if missing or '*'
    E.g instance_id = *cluster-1 or instance_id = *
    """

    config['instance_id'] = config.get('instance_id') or ''
    instance_id = config['instance_id']
    if instance_id.startswith('*') or not instance_id:
        prefix = instance_id.lstrip('*')
        _platform_id = platform.uname()[1] or 'instance'
        config['instance_id'] = '{prefix}uname:{platform}-pid:{pid}'.format(
            prefix=prefix,
            platform=_platform_id,
            pid=os.getpid())


def get_default_user_id():
    DEFAULT_USER = 'default'
    from sqlalchemy import text
    from rhodecode.model import meta

    engine = meta.get_engine()
    with meta.SA_Session(engine) as session:
        result = session.execute(text("SELECT user_id from users where username = :uname"), {'uname': DEFAULT_USER})
        user_id = result.first()[0]

    return user_id


def get_default_base_path():
    from sqlalchemy import text
    from rhodecode.model import meta

    engine = meta.get_engine()
    with meta.SA_Session(engine) as session:
        result = session.execute(text("SELECT ui_value from rhodecode_ui where ui_key = '/'"))
        base_path = result.first()[0]

    return base_path