"""Robot adapter registry.

Adding a robot (AgiBot X2, another vendor, a different TTS backend) means writing
one adapter and adding one line here. Nothing above this layer changes.
"""

from __future__ import annotations

from typing import Callable, Dict

from ..config.settings import Settings
from .base import RobotAdapter, RobotError


def _mock(settings: Settings) -> RobotAdapter:
    from .mock_robot import MockRobot

    return MockRobot(settings)


def _agibot_a3(settings: Settings) -> RobotAdapter:
    from .agibot_a3 import AgibotA3

    return AgibotA3(settings)


_REGISTRY: Dict[str, Callable[[Settings], RobotAdapter]] = {
    "mock": _mock,
    "real": _agibot_a3,
}


def available_modes() -> list:
    return sorted(_REGISTRY)


def create_robot(settings: Settings) -> RobotAdapter:
    builder = _REGISTRY.get(settings.robot.mode)
    if builder is None:
        raise RobotError(
            "unknown ROBOT_MODE '{0}'".format(settings.robot.mode),
            user_message="Unknown ROBOT_MODE '{0}'. Valid values: {1}.".format(
                settings.robot.mode, ", ".join(available_modes())
            ),
        )
    return builder(settings)