from abc import ABC, abstractmethod
from dataclasses import dataclass, field
from datetime import datetime


@dataclass
class VPNUserInfo:
    vpn_id: str
    internal_id: int
    server_id: int
    name: str
    is_enabled: bool
    access_config: str | None = None
    bytes_used: int = 0
    data_limit: int | None = None
    created_at: datetime | None = None


class VPNProvider(ABC):

    @abstractmethod
    async def create_user(
        self,
        internal_id: int,
        server_id: int,
        name: str,
    ) -> VPNUserInfo:
        ...

    @abstractmethod
    async def delete_user(self, vpn_id: str) -> bool:
        ...

    @abstractmethod
    async def enable_user(self, vpn_id: str) -> bool:
        ...

    @abstractmethod
    async def disable_user(self, vpn_id: str) -> bool:
        ...

    @abstractmethod
    async def get_user(self, vpn_id: str) -> VPNUserInfo | None:
        ...