"""
core/paths.py
-------------
Runtime path resolution that works both in development and when
frozen by PyInstaller (--onefile or directory build).

  user_data_dir()    — mutable data root (DB, exports) — next to the .exe
  bundled_asset(rel) — read-only asset path (icon etc.) — extracted bundle
"""

import os
import sys


def user_data_dir() -> str:
    """Root for mutable user data. Next to the .exe when frozen."""
    if getattr(sys, "frozen", False):
        return os.path.dirname(sys.executable)
    # development: two levels up from core/paths.py  →  project root
    return os.path.dirname(os.path.dirname(os.path.abspath(__file__)))


def bundled_asset(relative_path: str) -> str:
    """Absolute path to a read-only bundled asset (icon, etc.).

    In a onefile build sys._MEIPASS is the temp extraction dir;
    in a directory build it equals the exe directory.
    """
    if getattr(sys, "frozen", False):
        base = sys._MEIPASS  # type: ignore[attr-defined]
    else:
        base = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
    return os.path.join(base, relative_path)