# Copyright (C) 2016-2024 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/

"""
WARNING: be really carefully with changing ANY imports in this file
# This script is to mean as really fast executable, doing some imports here that would yield an import chain change
# can affect execution times...
# This can be easily debugged using such command::
# time PYTHONPROFILEIMPORTTIME=1 rc-ssh-wrapper-v2 --debug --mode=test .dev/dev.ini
"""

import warnings

warnings.filterwarnings("ignore", message="pkg_resources is deprecated as an API.*", category=UserWarning)
warnings.filterwarnings("ignore", message="pkg_resources is deprecated as an API.*", category=DeprecationWarning)

import os
import sys
import time
import logging

import click

from rhodecode.config.config_maker import sanitize_settings_and_apply_defaults
from rhodecode.config.patches import suppress_pkg_resources_warnings
from rhodecode.lib.request import Request
from rhodecode.lib.utils2 import AttributeDict
from rhodecode.lib.statsd_client import StatsdClient
from rhodecode.lib.config_utils import get_app_config_lightweight

from .utils import setup_custom_logging
from .backends import SshWrapperStandalone

log = logging.getLogger(__name__)


@click.command()
@click.argument("ini_path", type=click.Path(exists=True))
@click.option(
    "--mode",
    "-m",
    required=False,
    default="auto",
    type=click.Choice(["auto", "vcs", "git", "hg", "svn", "test"]),
    help="mode of operation",
)
@click.option("--user", help="Username for which the command will be executed")
@click.option("--user-id", help="User ID for which the command will be executed")
@click.option("--key-id", help="ID of the key from the database")
@click.option("--shell", "-s", is_flag=True, help="Allow Shell")
@click.option("--debug", is_flag=True, help="Enabled detailed output logging")
def main(ini_path, mode, user, user_id, key_id, shell, debug):
    # Apply pkg_resources deprecation warning suppression early
    suppress_pkg_resources_warnings()

    time_start = time.time()
    setup_custom_logging(ini_path, debug)

    command = os.environ.get("SSH_ORIGINAL_COMMAND", "")
    if not command and mode not in ["test"]:
        raise ValueError(
            "Unable to fetch SSH_ORIGINAL_COMMAND from environment."
            "Please make sure this is set and available during execution "
            "of this script."
        )

    # initialize settings and get defaults
    settings = get_app_config_lightweight(ini_path)
    settings = sanitize_settings_and_apply_defaults({"__file__": ini_path}, settings)

    # init and bootstrap StatsdClient
    StatsdClient.setup(settings)
    statsd = StatsdClient.statsd

    try:
        connection_info = os.environ.get("SSH_CONNECTION", "")
        request = Request.blank("/", base_url=settings["app.base_url"])
        request.user = AttributeDict(
            {
                "username": user,
                "user_id": user_id,
                "ip_addr": connection_info.split(" ")[0] if connection_info else None,
            }
        )
        env = {"RC_CMD_SSH_WRAPPER": "1", "request": request}
        ssh_wrapper = SshWrapperStandalone(
            command, connection_info, mode, user, user_id, key_id, shell, ini_path, settings, env
        )
    except Exception:
        log.exception("Failed to execute SshWrapper")
        sys.exit(-5)

    return_code = ssh_wrapper.wrap()
    operation_took = time.time() - time_start
    if statsd:
        operation_took_ms = round(1000.0 * operation_took)
        statsd.timing("rhodecode_ssh_wrapper_timing.histogram", operation_took_ms, use_decimals=False)

    sys.exit(return_code)