from datetime import datetime, timedelta, timezone
from typing import Any

from jose import jwt
from passlib.context import CryptContext

from app.core.config import get_settings


pwd_context = CryptContext(schemes=["argon2"], deprecated="auto")


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


def verify_password(password: str, password_hash: str) -> bool:
    return pwd_context.verify(password, password_hash)


def create_token(subject: str, token_type: str, expires_delta: timedelta, claims: dict[str, Any] | None = None) -> str:
    settings = get_settings()
    now = datetime.now(timezone.utc)
    payload: dict[str, Any] = {
        "sub": subject,
        "typ": token_type,
        "iat": now,
        "exp": now + expires_delta,
    }
    if claims:
        payload.update(claims)
    return jwt.encode(payload, settings.jwt_secret, algorithm="HS256")


def create_access_token(subject: str, permissions: list[str]) -> str:
    settings = get_settings()
    return create_token(
        subject,
        "access",
        timedelta(minutes=settings.jwt_access_token_minutes),
        {"permissions": permissions},
    )


def create_refresh_token(subject: str) -> str:
    settings = get_settings()
    return create_token(subject, "refresh", timedelta(days=settings.jwt_refresh_token_days))


def decode_token(token: str) -> dict[str, Any]:
    return jwt.decode(token, get_settings().jwt_secret, algorithms=["HS256"])