"""Load routing YAML configs from CONFIG_DIR."""

from __future__ import annotations

import os
from functools import lru_cache
from pathlib import Path
from typing import Any

import yaml

CONFIG_DIR = Path(os.environ.get("CONFIG_DIR", "/app/config"))


@lru_cache(maxsize=1)
def load_routing_rules() -> dict[str, Any]:
    path = CONFIG_DIR / "routing_rules.yaml"
    with path.open(encoding="utf-8") as f:
        return yaml.safe_load(f) or {}


@lru_cache(maxsize=1)
def load_model_matrix() -> dict[str, Any]:
    path = CONFIG_DIR / "model_matrix.yaml"
    with path.open(encoding="utf-8") as f:
        return yaml.safe_load(f) or {}


@lru_cache(maxsize=1)
def load_orchestration() -> dict[str, Any]:
    path = CONFIG_DIR / "orchestration.yaml"
    with path.open(encoding="utf-8") as f:
        return yaml.safe_load(f) or {}


def reload_configs() -> None:
    load_routing_rules.cache_clear()
    load_model_matrix.cache_clear()
    load_orchestration.cache_clear()