from pydantic import BaseModel, Field
from typing import Optional

class UserBase(BaseModel):
    username: str = Field(..., min_length=1, max_length=50)

class UserCreate(UserBase):
    password: str = Field(..., min_length=8, max_length=100)
    
    class Config:
        schema_extra = {
            "example": {
                "username": "johndoe",
                "password": "securepass123"
            }
        }

class UserResponse(UserBase):
    id: int
    
    class Config:
        orm_mode = True
        schema_extra = {
            "example": {
                "id": 1,
                "username": "johndoe"
            }
        }