from pydantic import BaseModel
from datetime import datetime
from typing import Optional, List

class ListCreate(BaseModel):
    name: str

class ListUpdate(BaseModel):
    name: str

class ListResponse(BaseModel):
    id: int
    name: str
    created_at: datetime
    member_count: int = 0

    class Config:
        from_attributes = True

class ListMemberAdd(BaseModel):
    contact_ids: List[int]

class ListMemberRemove(BaseModel):
    contact_ids: List[int]