settings_store.py

# Simple persistent settings store for MicroPython
# Stores settings in a small JSON file on the device filesystem.

import ujson as json
import os
import random
import binascii

_SETTINGS_FILE = "settings.json"

_default_settings = {
    "setup_completed": False,
    "user_name": "User",
    "sidekick_name": "Sidekick",
    "mute": False,
    "core_type": "Custom",
    "sidekick_id": None,
    "ap_password": None,
}

_settings = {}

def _save():
    try:
        with open(_SETTINGS_FILE, "w") as f:
            json.dump(_settings, f)
    except Exception:
        pass

def _load():
    global _settings
    try:
        with open(_SETTINGS_FILE, "r") as f:
            _settings = json.load(f)
    except Exception:
        _settings = _default_settings.copy()
        _save()

def get_ap_password():
    global _settings
    if "ap_password" not in _settings or not _settings["ap_password"]:
        letters = 'abcdefghjmnopqrs_tuvwxyzABCDEFGHJLMNPQRSTWXYZ23456789'
        _settings["ap_password"] = ''.join(random.choice(letters) for _ in range(8))
        _save()
    return _settings["ap_password"]


def is_muted():
    return _settings.get("mute", False)


def toggle_mute():
    _settings["mute"] = not _settings.get("mute", False)
    _save()
    return _settings["mute"]


def get_core_type():
    return _settings.get("core_type", "Default")


def toggle_core_type():
    current = get_core_type()
    _settings["core_type"] = "Custom" if current == "Default" else "Default"
    _save()
    return _settings["core_type"]


def get_sidekick_id():
    global _settings
    if "sidekick_id" not in _settings or _settings["sidekick_id"] is None:
        # Generate a new unique ID if it doesn't exist
        # Using os.urandom for a reasonably unique ID in MicroPython, truncated to 4 hex digits
        _settings["sidekick_id"] = binascii.hexlify(os.urandom(2)).decode('utf-8') # 2 bytes = 4 hex digits
        _save()
    return _settings["sidekick_id"]

def reset_settings():
    """Delete settings file and restore defaults in memory and on disk."""
    global _settings
    try:
        if _SETTINGS_FILE in os.listdir():
            os.remove(_SETTINGS_FILE)
    except Exception:
        pass
    _settings = _default_settings.copy()
    _save()
    return _settings.copy()

# Initialize on import
_load()