"""
公告相关Schema
"""
from pydantic import BaseModel, Field
from typing import Optional
from datetime import datetime


class AnnouncementBase(BaseModel):
    title: str = Field(..., min_length=1, max_length=255)
    content: str = Field(..., min_length=1)
    type: str = Field(default="INFO")
    is_pinned: bool = Field(default=False)
    priority: int = Field(default=0, ge=0, le=100)


class AnnouncementCreate(AnnouncementBase):
    starts_at: Optional[datetime] = None
    expires_at: Optional[datetime] = None


class AnnouncementUpdate(AnnouncementBase):
    starts_at: Optional[datetime] = None
    expires_at: Optional[datetime] = None


class AnnouncementResponse(AnnouncementBase):
    id: int
    starts_at: Optional[datetime] = None
    expires_at: Optional[datetime] = None
    created_at: datetime
    updated_at: datetime

    class Config:
        from_attributes = True