61 lines
2.2 KiB
Python
61 lines
2.2 KiB
Python
from typing import List, Optional
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from fastapi import HTTPException, status
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from sqlalchemy import update
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from sqlalchemy.ext.asyncio import AsyncSession
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from ..models import UpdateLog
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from ..repositories.update_log_repository import UpdateLogRepository
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class UpdateLogService:
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"""更新日志服务，提供增删改查能力，并保证置顶唯一。"""
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def __init__(self, session: AsyncSession):
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self.session = session
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self.repo = UpdateLogRepository(session)
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async def list_logs(self, limit: Optional[int] = None) -> List[UpdateLog]:
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if limit is None:
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return list(await self.repo.list())
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return list(await self.repo.list_latest(limit))
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async def create_log(self, content: str, creator: str | None = None, *, is_pinned: bool = False) -> UpdateLog:
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if is_pinned:
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await self._clear_pinned()
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log = UpdateLog(content=content, created_by=creator, is_pinned=is_pinned)
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await self.repo.add(log)
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await self.session.commit()
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await self.session.refresh(log)
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return log
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async def update_log(self, log_id: int, *, content: Optional[str] = None, is_pinned: Optional[bool] = None) -> UpdateLog:
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log = await self.repo.get(id=log_id)
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if not log:
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="更新记录不存在")
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updates = {}
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if content is not None:
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updates["content"] = content
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if is_pinned is not None:
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if is_pinned:
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await self._clear_pinned()
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updates["is_pinned"] = is_pinned
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if updates:
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await self.repo.update_fields(log, **updates)
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await self.session.commit()
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await self.session.refresh(log)
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return log
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async def delete_log(self, log_id: int) -> None:
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log = await self.repo.get(id=log_id)
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if not log:
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="更新记录不存在")
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await self.repo.delete(log)
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await self.session.commit()
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async def _clear_pinned(self) -> None:
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await self.session.execute(update(UpdateLog).values(is_pinned=False))
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