"""Application configuration."""

from __future__ import annotations

import os
from dataclasses import dataclass
from pathlib import Path


def load_dotenv(path: str | Path = ".env") -> None:
    env_path = Path(path)
    if not env_path.exists():
        return
    for raw_line in env_path.read_text().splitlines():
        line = raw_line.strip()
        if not line or line.startswith("#") or "=" not in line:
            continue
        key, value = line.split("=", 1)
        os.environ.setdefault(key.strip(), value.strip().strip('"').strip("'"))


@dataclass(slots=True)
class Settings:
    db_path: str = "./quiz.db"
    secret_key: str | None = None
    admin_password: str | None = None
    host: str = "127.0.0.1"
    port: int = 8001
    public_url: str = "https://quiz.ahkhan.me"
    log_level: str = "INFO"
    pool_path: str = "./pool.json"
    default_session_id: str = "main"

    @classmethod
    def from_env(cls) -> "Settings":
        load_dotenv()
        return cls(
            db_path=os.getenv("QUIZ_DB_PATH", "./quiz.db"),
            secret_key=os.getenv("QUIZ_SECRET_KEY"),
            admin_password=os.getenv("QUIZ_ADMIN_PASSWORD"),
            host=os.getenv("QUIZ_HOST", "127.0.0.1"),
            port=int(os.getenv("QUIZ_PORT", "8001")),
            public_url=os.getenv("QUIZ_PUBLIC_URL", "https://quiz.ahkhan.me").rstrip("/"),
            log_level=os.getenv("QUIZ_LOG_LEVEL", "INFO"),
            pool_path=os.getenv("QUIZ_POOL_PATH", "./pool.json"),
            default_session_id=os.getenv("QUIZ_SESSION_ID", "main"),
        )

    @property
    def secure_cookies(self) -> bool:
        return self.public_url.startswith("https://")