import json
import os


class DataFile(dict):
    def __init__(self, filename: str, create: bool):
        super().__init__()
        self.filename = filename

        try:
            os.stat(self.filename)
        except OSError as e:
            if not create:
                raise e
            else:
                open(self.filename, "w").close()

        self.load()

    def load(self):
        pass

    def save(self):
        pass


class JSONFile(DataFile):
    def __init__(self, filename: str, create: bool):
        super().__init__(filename, create)

    def load(self):
        with open(self.filename, "rt") as f:
            c = f.read()

        if len(c) > 0:
            json_dict = json.loads(c)
            for k in json_dict:
                self[k] = json_dict[k]

    def save(self):
        with open(self.filename, "wt") as f:
            f.write(json.dumps(self.copy()))