config_manager.py

import json
import os

CONFIG_PATH = os.path.join(os.path.dirname(__file__), "config.json")

DEFAULTS = {
    "city": "Oslo",
    "timezone": "Europe/Oslo",
    "api_key": "API-KEY-HERE",
    "units": "metric",
    "brightness": 100,
    "clock_24h": False,
    "night_mode": True,
    "night_start": 23,
    "night_end": 7,
    "night_brightness": 15,
    "theme": "dark",
    "hotspot_ssid":     "DeskClock",
    "hotspot_password": "",
    "hotspot_iface":    "auto",
}


class ConfigManager:
    def __init__(self):
        self._data = dict(DEFAULTS)
        self._load()

    def _load(self):
        if os.path.exists(CONFIG_PATH):
            try:
                with open(CONFIG_PATH) as f:
                    saved = json.load(f)
                self._data.update(saved)
            except Exception:
                pass

    def save(self):
        with open(CONFIG_PATH, "w") as f:
            json.dump(self._data, f, indent=2)

    def get(self, key, default=None):
        return self._data.get(key, default)

    def set(self, key, value):
        self._data[key] = value

    def update(self, d):
        self._data.update(d)
        self.save()