from __future__ import annotations

from datetime import datetime, timedelta

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

from app.core.config import settings
from app.core.constants import TokenType

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


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


def verify_password(plain_password: str, hashed_password: str) -> bool:
    return pwd_context.verify(plain_password, hashed_password)


def create_access_token(subject: int | str, role: str) -> str:
    expire = datetime.utcnow() + timedelta(minutes=settings.JWT_ACCESS_TOKEN_EXPIRE_MINUTES)
    payload = {
        "sub": str(subject),
        "role": role,
        "type": TokenType.ACCESS,
        "exp": expire,
    }
    return jwt.encode(payload, settings.JWT_SECRET_KEY, algorithm=settings.JWT_ALGORITHM)


def create_refresh_token(subject: int | str) -> str:
    expire = datetime.utcnow() + timedelta(days=settings.JWT_REFRESH_TOKEN_EXPIRE_DAYS)
    payload = {
        "sub": str(subject),
        "type": TokenType.REFRESH,
        "exp": expire,
    }
    return jwt.encode(payload, settings.JWT_SECRET_KEY, algorithm=settings.JWT_ALGORITHM)


def decode_token(token: str) -> dict | None:
    try:
        return jwt.decode(token, settings.JWT_SECRET_KEY, algorithms=[settings.JWT_ALGORITHM])
    except JWTError:
        return None