from __future__ import annotations

import os

from pydantic import BaseSettings


def _ensure_dir(path: str) -> str:
    os.makedirs(path, exist_ok=True)
    return path


class Settings(BaseSettings):
    api_username: str = "backup-admin"
    api_password: str = "SuperSecret123"
    token_lifetime_minutes: int = 120
    database_url: str = "sqlite:///./data/backup.db"
    backup_base: str = "/srv/backup"
    history_retention: int = 20
    log_dir: str = "./logs"
    ssh_timeout_seconds: int = 1800
    ssh_pass_command: str = "sshpass"
    ssh_extra_args: str = "-o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null"
    rsync_extra_args: str = "--info=progress2 --partial"
    compress: bool = True

    class Config:
        env_file = os.path.join(os.path.dirname(__file__), "..", ".env")
        env_file_encoding = "utf-8"

    @property
    def backup_current(self) -> str:
        return _ensure_dir(os.path.join(self.backup_base, "current"))

    @property
    def backup_history(self) -> str:
        return _ensure_dir(os.path.join(self.backup_base, ".history"))

    @property
    def runtime_logs(self) -> str:
        return _ensure_dir(self.log_dir)


settings = Settings()