from datetime import datetime
from pydantic import BaseModel, EmailStr, Field


class RoleOut(BaseModel):
    id: int
    name: str
    description: str | None = None

    model_config = {"from_attributes": True}


class UserCreate(BaseModel):
    username: str = Field(..., min_length=3, max_length=100)
    email: EmailStr
    password: str = Field(..., min_length=8)
    role_id: int = 3   # default: user


class UserUpdate(BaseModel):
    username: str | None = Field(None, min_length=3, max_length=100)
    email: EmailStr | None = None
    is_active: bool | None = None
    role_id: int | None = None


class UserOut(BaseModel):
    id: int
    username: str
    email: str
    role_id: int
    is_active: bool
    created_at: datetime

    model_config = {"from_attributes": True}


class UserWithRole(UserOut):
    role: RoleOut