import jwt
from datetime import datetime, timedelta
import hashlib
from typing import Optional, Dict

SECRET_KEY = "your-secret-key"
ALGORITHM = "HS256"
ACCESS_TOKEN_EXPIRE_MINUTES = 60 * 24 * 7  # 7 дней

def create_access_token(data: dict) -> str:
    to_encode = data.copy()
    expire = datetime.utcnow() + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
    to_encode.update({"exp": expire})
    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
    return encoded_jwt

def verify_token(token: str) -> Optional[Dict]:
    try:
        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
        return payload
    except jwt.PyJWTError:
        return None

def get_password_hash(password: str) -> str:
    return hashlib.sha256(password.encode()).hexdigest()

def verify_password(plain_password: str, hashed_password: str) -> bool:
    return get_password_hash(plain_password) == hashed_password