from pydantic import BaseModel, EmailStr, ConfigDict
from typing import Optional
from datetime import datetime
from uuid import UUID


class UserBase(BaseModel):
    """Base user schema with common attributes."""
    username: str
    email: EmailStr


class UserCreate(UserBase):
    """Schema for creating a new user."""
    password: str


class UserUpdate(BaseModel):
    """Schema for updating user information."""
    username: Optional[str] = None
    email: Optional[EmailStr] = None
    password: Optional[str] = None


class UserResponse(UserBase):
    """Response schema for user data (without sensitive info)."""
    id: UUID
    is_admin: bool
    created_at: datetime
    updated_at: datetime

    model_config = ConfigDict(from_attributes=True)


class UserWithToken(UserResponse):
    """User response with authentication tokens."""
    access_token: str
    refresh_token: str
    token_type: str = "bearer"