from __future__ import annotations

import uuid
from dataclasses import dataclass, field
from datetime import datetime, timezone
from typing import Optional


def _utcnow() -> datetime:
    return datetime.now(timezone.utc)


def _uuid() -> str:
    return str(uuid.uuid4())


@dataclass
class User:
    id: str = field(default_factory=_uuid)
    email: str = ""
    username: Optional[str] = None
    full_name: Optional[str] = None
    password_hash: str = ""
    is_active: bool = True
    is_verified: bool = False
    failed_login_attempts: int = 0
    locked_until: Optional[datetime] = None
    last_login: Optional[datetime] = None
    password_changed_at: Optional[datetime] = None
    created_at: datetime = field(default_factory=_utcnow)
    updated_at: datetime = field(default_factory=_utcnow)
    deleted_at: Optional[datetime] = None
    roles: list[str] = field(default_factory=list)


@dataclass
class RefreshSession:
    id: str = field(default_factory=_uuid)
    user_id: str = ""
    token_key: str = ""
    token_hash: str = ""
    device_info: Optional[str] = None
    ip_address: Optional[str] = None
    expires_at: Optional[datetime] = None
    revoked_at: Optional[datetime] = None
    created_at: datetime = field(default_factory=_utcnow)
    updated_at: datetime = field(default_factory=_utcnow)


@dataclass
class Role:
    id: str = field(default_factory=_uuid)
    name: str = ""
    description: Optional[str] = None
    permissions: list[str] = field(default_factory=list)


@dataclass
class Permission:
    id: str = field(default_factory=_uuid)
    code: str = ""
    description: Optional[str] = None