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"""
core/app_settings.py
Platform-aware persistence for application settings.
Stored independently of profiles so they survive profile switches and
reflect per-computer preferences (theme, font, paths, etc.).
Locations:
Windows : %APPDATA%/labUI/settings.json
macOS : ~/Library/Application Support/labUI/settings.json
Linux : $XDG_CONFIG_HOME/labUI/settings.json (default ~/.config/labUI/)
"""
import json
import os
import sys
from pathlib import Path
def app_data_dir() -> Path:
"""Per-user, per-platform base directory for anything this app needs to
persist outside the install directory (settings, updater cache, ...) —
deliberately outside the install dir since an update can replace/move
everything in there."""
if sys.platform == "win32":
base = Path(os.environ.get("APPDATA", Path.home()))
elif sys.platform == "darwin":
base = Path.home() / "Library" / "Application Support"
else:
base = Path(os.environ.get("XDG_CONFIG_HOME", Path.home() / ".config"))
return base / "labUI"
def _settings_path() -> Path:
return app_data_dir() / "settings.json"
SETTINGS_PATH = _settings_path()
def load_settings(defaults: dict) -> dict:
"""Return defaults merged with any saved settings. Never raises."""
cfg = dict(defaults)
try:
if SETTINGS_PATH.exists():
with open(SETTINGS_PATH) as f:
cfg.update(json.load(f))
except Exception:
pass
return cfg
def save_settings(cfg: dict) -> None:
"""Persist cfg to disk. Never raises."""
try:
SETTINGS_PATH.parent.mkdir(parents=True, exist_ok=True)
with open(SETTINGS_PATH, "w") as f:
json.dump(cfg, f, indent=2)
except Exception:
pass
# ── Developer mode ────────────────────────────────────────────────────────
#
# In-memory cache so widgets that build device/config UI (Add Device dialog,
# per-device config panels, plugin panels) can check this without needing
# the full settings dict threaded through their constructors. MainWindow
# keeps it in sync with the persisted setting whenever settings are
# loaded/applied — see set_developer_mode() calls in ui/main_window.py.
_dev_mode = True
def is_developer_mode() -> bool:
return _dev_mode
def set_developer_mode(value: bool) -> None:
global _dev_mode
_dev_mode = value
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