import os
import json

class Config():
    def __init__(self):
        self.__config_file = os.path.join(os.path.expanduser('~'), ".config/sauna/config.json")
        self.__config = None

        try:
            with open(self.__config_file, "r") as handle:
                self.__config = json.load(handle)
        except FileNotFoundError:
            os.makedirs(os.path.dirname(self.__config_file), exist_ok=True)
            self.__config = {
                "target_temperature": "80",
                "temperature_step": "5",
                "max_temperature": "120",
                "runtime": "2:30",
                "heat_pin": "26"
            }
            with open(self.__config_file, "w") as handle:
                json.dump(self.__config, handle)

    def target_temperature(self):
        return self.__config['target_temperature']

    def temperature_step(self):
        res =self.__config['temperature_step']
        print(res)
        return res

    def heat_pin(self):
        return self.__config['heat_pin']

    def runtime(self):
        return self.__config['runtime']

    def update_target_temperature(self, temperature: int):
        if temperature <= int(self.__config['max_temperature']):
            self.__config['target_temperature'] = str(temperature)
            with open(self.__config_file, "w") as handle:
                json.dump(self.__config, handle)