# scheme/users.py
from pydantic import BaseModel, Field, EmailStr
from datetime import datetime
from typing import Optional

# ---------- 请求模型 ----------
class UserCreate(BaseModel):
    username: str = Field(..., min_length=3, max_length=50)
    email: EmailStr
    full_name: Optional[str] = Field(None, max_length=100)

class UserUpdate(BaseModel):
    username: Optional[str] = Field(None, min_length=3, max_length=50)
    email: Optional[EmailStr] = None
    full_name: Optional[str] = Field(None, max_length=100)

# ---------- 响应模型 ----------
class UserResponse(BaseModel):
    id: int
    username: str
    email: str
    full_name: Optional[str]
    created_at: datetime
    updated_at: Optional[datetime]

    class Config:
        from_attributes = True  # 支持 ORM 对象转换