"""JWT 与密码哈希工具。"""
from datetime import datetime, timedelta, timezone
from typing import Any, Optional

from jose import JWTError, jwt
from passlib.context import CryptContext

from app.config import get_settings

settings = get_settings()

pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")

ALGORITHM = "HS256"


def hash_password(password: str) -> str:
    return pwd_context.hash(password)


def verify_password(plain: str, hashed: str) -> bool:
    return pwd_context.verify(plain, hashed)


def create_access_token(subject: str, extra: Optional[dict[str, Any]] = None) -> str:
    expire = datetime.now(timezone.utc) + timedelta(minutes=settings.JWT_EXPIRE_MINUTES)
    payload: dict[str, Any] = {"sub": subject, "exp": expire}
    if extra:
        payload.update(extra)
    return jwt.encode(payload, settings.SECRET_KEY, algorithm=ALGORITHM)


def decode_token(token: str) -> dict[str, Any]:
    """解码 token，失败抛 JWTError。"""
    return jwt.decode(token, settings.SECRET_KEY, algorithms=[ALGORITHM])