from __future__ import annotations

import os
from dataclasses import dataclass
from pathlib import Path

from time_machine.adapters.model_registry import YamlModelRegistry
from time_machine.domain.models import ModelBudget


REPO_ROOT = Path(__file__).resolve().parents[3]


@dataclass(frozen=True)
class BlankExperienceServices:
    adapter_profile: str
    model_budget: ModelBudget


def create_blank_services(adapter_profile: str | None = None) -> BlankExperienceServices:
    """Infrastructure-only service root for the rebuilt experience."""

    profile = adapter_profile or os.getenv("TIME_MACHINE_ADAPTER_PROFILE", "fixture")
    model_budget = YamlModelRegistry(REPO_ROOT / "config" / "models.yaml").load_budget()
    return BlankExperienceServices(
        adapter_profile=profile,
        model_budget=model_budget,
    )