#!/usr/bin/python3

class FileDict:
    def __init__(self, path: str=None):
        self.path = path

        if path is None:
            self.settings = {}

        else:
            self.load_from_file(path)

    def load_from_file(self, path):
        file = open(path, "r")
        self.settings = eval(file.read())
        file.close()

    def save(self, path: str=None):
        if path is None:
            path = self.path

        file = open(path, "w")
        file.write(str(self))
        file.close()

    def __str__(self):
        new_settings_str = "{\n"
        for key in self.settings:
            new_settings_str += "\t" + repr(key) + ": " + repr(self.settings[key]) + ",\n"

        new_settings_str = new_settings_str[:-2] + "\n}"

        return new_settings_str

    def __repr__(self):
        return repr(self.settings)

    def __getitem__(self, key):
        return self.settings[key]

    def __setitem__(self, key, value):
        self.settings[key] = value

    def __delitem__(self, key):
        self.settings.pop(key)

    def __iter__(self):
        return self.settings

    def __len__(self):
        return len(self.settings)