from datetime import datetime, timedelta, timezone

import jwt
from pwdlib import PasswordHash

from app.config import (
    SECRET_KEY,
    ALGORITHM,
    ACCESS_TOKEN_EXPIRE_MINUTES,
    REFRESH_TOKEN_EXPIRE_DAYS,
)

password_hash = PasswordHash.recommended()


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


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


def create_access_token(data: dict, expires_delta: timedelta | None = None) -> str:
    to_encode = data.copy()
    expire = datetime.now(timezone.utc) + (
        expires_delta or timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
    )
    to_encode["exp"] = expire
    return jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)


def create_refresh_token(data: dict) -> str:
    to_encode = data.copy()
    expire = datetime.now(timezone.utc) + timedelta(days=REFRESH_TOKEN_EXPIRE_DAYS)
    to_encode["exp"] = expire
    to_encode["type"] = "refresh"
    return jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)


def decode_token(token: str) -> dict:
    """Decode and verify a JWT token. Raises jwt.PyJWTError on failure."""
    return jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])