#!/usr/bin/env python
"""Loads and manages the bot settings."""

from botly.db import Db


class Settings(Db):
    
    def __init__(self):
        assert self.is_loaded(), "Db is not loaded before loading settings."
        self.root = self.get_node('/BotDb/Settings')
        self.settingsCache = {}

    def get_string(self, key, default=''):
        """Returns the string value if it exists."""
        if key not in self.settingsCache: 
            self.settingsCache[key] = self._load_setting(key, default)
        return self.settingsCache[key]

    def get_int(self, key, default='0'):
        """Returns the int value if it exists."""
        # Default default is a string because passed to get_string.
        # It's converted back to int below
        v = self.get_string(key, default=default)
        return int(v)

    def _load_setting(self, key, default):
        setting = self.query_value(key)
        return setting if setting is not None else default