"""Application composition root for the uvm command-line executable."""

from __future__ import annotations

from collections.abc import Callable
from dataclasses import dataclass

from .config import Settings
from .firecracker.process import FirecrackerProcessManager
from .images import ImageStore
from .install import Installer
from .lifecycle import LifecycleService
from .network import NetworkManager
from .state import StateStore
from .system import CommandRunner


@dataclass(slots=True)
class Application:
    """Concrete host services used by the CLI; this is not a public SDK."""

    settings: Settings
    state_store: StateStore
    installer: Installer
    lifecycle: LifecycleService


def build_application(emit: Callable[[str], None] | None = print) -> Application:
    settings = Settings.from_environment()
    runner = CommandRunner(emit=emit)
    state_store = StateStore(settings)
    images = ImageStore(settings, runner)
    network = NetworkManager(settings, runner)
    process = FirecrackerProcessManager(settings)
    lifecycle = LifecycleService(settings, state_store, images, network, process)
    installer = Installer(settings, runner, state_store, emit=emit)
    return Application(
        settings=settings,
        state_store=state_store,
        installer=installer,
        lifecycle=lifecycle,
    )