import os

from .settings import Settings


class SettingEntry:
    def __init__(self, name, env_name=None, default=None, namespace='DEFAULT', type=str):
        self.name = name
        self.environment = env_name
        self.default = default
        self.value = default
        self.namespace = namespace
        self.read_from_env = False
        self.type = type

        self.str_value = None

        self.read_config()

        if os.getenv(self.environment) is not None:
            self.read_from_env = True
            self.set(os.getenv(self.environment))

        Settings.__list__.append(self)

    def __str__(self):
        return '{0} => {1}'.format(self.name, self.value)

    def __eq__(self, other):
        return self.name == other

    def read_config(self):
        if self.namespace in Settings.__config__ and self.name in Settings.__config__[self.namespace] and not self.read_from_env:
            self.set(Settings.__config__[self.namespace][self.name])

    def push_config(self):
        Settings.__config__[self.namespace][self.name] = self.str_value

    def set(self, value):
        self.value = self.type(value)
        self.str_value = str(self.value)

    def get(self):
        return self.type(self.value)