from dataclasses import dataclass
import asyncio
import os
import aiofiles


class ConfigObject:
    host: str
    conf_body: str
    path: str

    def __init__(self, host: str, conf_body: str, path: str):
        self.host = host
        self.conf_body = conf_body.replace(
            "server_name _;", f"server_name {host}.server.com;"
        )

        self.path = os.path.abspath(path)

        if not os.path.isdir(self.path):
            os.mkdir(self.path)

        self.full_path_to_file: str = os.path.join(self.path, f"{host}.conf")

    @property
    def existst(self) -> bool:
        """Возвращает True, если файл конфига уже существует."""
        return os.path.isfile(self.full_path_to_file)

    async def write(self) -> bool:
        """Записывает конфиг файл."""
        if not self.existst:
            async with aiofiles.open(self.full_path_to_file, mode="w") as file:
                await file.write(self.conf_body)
        return True

    def __repr__(self):
        return f"Hi, config for {self.host}"


class ConfigFactory:
    def __init__(self, path_to_template: str, path_to_configs_dir: str):
        self.templ = self.__read_config_template_file(path_to_template)
        self.path = path_to_configs_dir

    def create(self, host: str) -> ConfigObject:
        return ConfigObject(host, self.templ, self.path)

    def __read_config_template_file(self, path_to_file: str) -> str:
        """Прочесть шаблон конфига для сервера из файла."""
        template: str = ""

        _full_path = os.path.abspath(path_to_file)
        with open(_full_path, mode="r", encoding="utf8") as file:
            template = file.read()

        return template