from datetime import datetime

from pydantic import BaseModel


class AnnouncementCreate(BaseModel):
    title: str
    content: str | None = None
    is_pinned: bool = False


class AnnouncementUpdate(BaseModel):
    title: str | None = None
    content: str | None = None
    is_pinned: bool | None = None


class AnnouncementOut(BaseModel):
    id: int
    class_id: int
    author_id: int
    author_name: str
    title: str
    content: str | None
    is_pinned: bool
    created_at: datetime
    updated_at: datetime