"""Security utilities for authentication and authorization."""

from datetime import datetime, timedelta
from typing import Optional

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

from app.infra.config import get_settings

settings = get_settings()

# Password hashing context
pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")


def hash_password(password: str) -> str:
    """
    Hash a password using bcrypt.

    Args:
        password: Plain text password

    Returns:
        Hashed password
    """
    return pwd_context.hash(password)


def verify_password(plain_password: str, hashed_password: str) -> bool:
    """
    Verify a password against its hash.

    Args:
        plain_password: Plain text password
        hashed_password: Hashed password to verify against

    Returns:
        True if password matches, False otherwise
    """
    return pwd_context.verify(plain_password, hashed_password)


def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
    """
    Create a JWT access token.

    Args:
        data: Data to encode in the token
        expires_delta: Optional expiration time delta

    Returns:
        Encoded JWT token
    """
    to_encode = data.copy()
    if expires_delta:
        expire = datetime.utcnow() + expires_delta
    else:
        expire = datetime.utcnow() + timedelta(seconds=settings.jwt_access_ttl_seconds)

    to_encode.update({"exp": expire, "type": "access"})
    encoded_jwt = jwt.encode(to_encode, settings.jwt_secret, algorithm=settings.jwt_algorithm)
    return encoded_jwt


def create_refresh_token(data: dict) -> str:
    """
    Create a JWT refresh token.

    Args:
        data: Data to encode in the token

    Returns:
        Encoded JWT token
    """
    to_encode = data.copy()
    expire = datetime.utcnow() + timedelta(seconds=settings.jwt_refresh_ttl_seconds)
    to_encode.update({"exp": expire, "type": "refresh"})
    encoded_jwt = jwt.encode(to_encode, settings.jwt_secret, algorithm=settings.jwt_algorithm)
    return encoded_jwt


def decode_token(token: str) -> Optional[dict]:
    """
    Decode and verify a JWT token.

    Args:
        token: JWT token to decode

    Returns:
        Decoded token payload or None if invalid
    """
    try:
        payload = jwt.decode(token, settings.jwt_secret, algorithms=[settings.jwt_algorithm])
        return payload
    except JWTError:
        return None