"""Onionr - Private P2P Communication.

Sets CLI arguments for Onionr
"""
from typing import Callable

from .. import onionrstatistics, version, daemonlaunch
from .. import pubkeymanager  # commands to add or change id
from .. import resetplugins  # command to reinstall default plugins


import onionrexceptions
"""
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 3 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 <https://www.gnu.org/licenses/>.
"""


def get_arguments() -> dict:
    """Return command argument dict, minus plugin cmds.

    This is a function because we need to be able to
    dynamically modify them with plugins
    """
    args = {
        ('details', 'info'): onionrstatistics.show_details,
        ('stats', 'statistics'): onionrstatistics.show_stats,
        ('version',): version.version,
        ('start', 'daemon'): daemonlaunch.start,
        ('stop', 'kill'): daemonlaunch.kill_daemon,
        ('addid', 'add-id'): pubkeymanager.add_ID,
        ('changeid', 'change-id'): pubkeymanager.change_ID,
        ('resetplugins', 'reset-plugins'): resetplugins.reset
    }
    return args


def get_help(arg: str) -> str:
    """Return the help info string from a given command."""
    arguments = get_arguments()
    # Iterate the command alias tuples
    for argument in arguments:
        # Return the help message if its found in a command alias tuple
        if arg in argument:
            return arguments[argument].onionr_help
    raise KeyError


def get_func(argument: str) -> Callable:
    """Return the function for a given command argument."""
    argument = argument.lower()
    args = get_arguments()

    for arg in args.keys():  # Iterate command alias sets
        """
        If our argument is in the current alias set,
        return the command function
        """
        if argument in arg:
            return args[arg]
    raise onionrexceptions.NotFound