from datetime import datetime
from typing import Optional

from pydantic import BaseModel, EmailStr, Field


class UserBase(BaseModel):
    username: str
    email: EmailStr


class UserCreate(UserBase):
    password: str = Field(..., min_length=8)
    role: str = "viewer"


class UserUpdate(BaseModel):
    email: Optional[EmailStr] = None
    role: Optional[str] = None
    is_active: Optional[bool] = None


class UserInDB(UserBase):
    id: int
    role: str
    is_active: bool
    last_login_at: Optional[datetime]
    created_at: datetime

    class Config:
        from_attributes = True


class UserResponse(UserBase):
    id: int
    role: str
    is_active: bool
    created_at: datetime

    class Config:
        from_attributes = True