from __future__ import annotations

from dataclasses import dataclass
from pathlib import Path
import os

ROOT = Path(__file__).resolve().parents[2]
ENV_PATH = ROOT / ".env"


def _load_env_file(path: Path = ENV_PATH) -> dict[str, str]:
    values: dict[str, str] = {}
    if not path.exists():
        return values
    for raw in path.read_text().splitlines():
        line = raw.strip()
        if not line or line.startswith("#") or "=" not in line:
            continue
        key, value = line.split("=", 1)
        values[key.strip()] = value.strip().strip('"').strip("'")
    return values


def _env(name: str, default: str = "") -> str:
    file_values = _load_env_file()
    return os.getenv(name, file_values.get(name, default))


def _env_bool(name: str, default: bool = False) -> bool:
    value = _env(name, "true" if default else "false").strip().lower()
    return value in {"1", "true", "yes", "on"}


def _env_bool_any(*names: str, default: bool = False) -> bool:
    file_values = _load_env_file()
    for name in names:
        value = os.getenv(name)
        if value is None:
            value = file_values.get(name)
        if value is not None:
            return value.strip().lower() in {"1", "true", "yes", "on"}
    return default


def _env_int(name: str, default: int) -> int:
    try:
        return int(_env(name, str(default)))
    except Exception:
        return default


@dataclass(frozen=True)
class HermesConfig:
    trader_url: str
    argus_url: str
    crypto_url: str
    metals_url: str
    news_url: str
    atlas_url: str
    exec_url: str
    crypto_timeframes: tuple[str, ...]
    retention_days: int
    prune_interval_hours: int
    cycle_seconds: int
    breakout_memory_window_seconds: int
    hermes_allow_actions: bool


def load_config() -> HermesConfig:
    timeframes = tuple(
        part.strip()
        for part in _env("HERMES_CRYPTO_TIMEFRAMES", "5m,15m,1h,4h,1d").split(",")
        if part.strip()
    )
    return HermesConfig(
        trader_url=_env("HERMES_TRADER_URL", "http://127.0.0.1:8570"),
        argus_url=_env("HERMES_ARGUS_URL", "http://127.0.0.1:8520"),
        crypto_url=_env("HERMES_CRYPTO_URL", "http://127.0.0.1:8580"),
        metals_url=_env("HERMES_METALS_URL", "http://127.0.0.1:8591"),
        news_url=_env("HERMES_NEWS_URL", "http://127.0.0.1:8600"),
        atlas_url=_env("HERMES_ATLAS_URL", "http://127.0.0.1:8550"),
        exec_url=_env("HERMES_EXEC_URL", "http://127.0.0.1:8560"),
        crypto_timeframes=timeframes,
        retention_days=_env_int("HERMES_RETENTION_DAYS", 7),
        prune_interval_hours=_env_int("HERMES_PRUNE_INTERVAL_HOURS", 6),
        cycle_seconds=_env_int("HERMES_CYCLE_SECONDS", 60),
        breakout_memory_window_seconds=_env_int("HERMES_BREAKOUT_MEMORY_WINDOW_SECONDS", 900),
        hermes_allow_actions=_env_bool_any("HERMES_ALLOW_ACTIONS", "HERMES_ALLOW_AUTO_ACTIONS", default=False),
    )