"""Default local paths for rustwx-stormscope products and caches."""

from __future__ import annotations

import os
from pathlib import Path


def env_value(name: str, legacy_name: str | None = None, default: str | Path | None = None) -> str:
    if name in os.environ:
        return os.environ[name]
    if legacy_name and legacy_name in os.environ:
        return os.environ[legacy_name]
    if default is None:
        return ""
    return str(default)


def repo_root() -> Path:
    return Path(__file__).resolve().parents[1]


def wxstore_root() -> Path:
    return Path(
        env_value(
            "RUSTWX_STORMSCOPE_WXSTORE_ROOT",
            "SSFAST_WXSTORE_ROOT",
            repo_root() / "volume" / "wxstores" / "stormscope",
        )
    )


def default_outdir() -> Path:
    return Path(env_value("RUSTWX_STORMSCOPE_OUT", "SSFAST_OUT", wxstore_root() / "out" / "operational"))


def default_site_dir() -> Path:
    return Path(env_value("RUSTWX_STORMSCOPE_SITE", "SSFAST_SITE", wxstore_root() / "site"))


def default_exports_dir() -> Path:
    return Path(env_value("RUSTWX_STORMSCOPE_EXPORTS", "SSFAST_EXPORTS", wxstore_root() / "exports"))


def default_spatial_root() -> Path:
    return Path(env_value("RUSTWX_STORMSCOPE_SPATIAL_ROOT", "SSFAST_SPATIAL_ROOT", wxstore_root() / "spatial"))


def default_webmap_dir() -> Path:
    return Path(env_value("RUSTWX_STORMSCOPE_WEBMAP", "SSFAST_WEBMAP", wxstore_root() / "webmap_preview"))