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stardrophere
76 lines
2.4 KiB
Python
76 lines
2.4 KiB
Python
# 公关修改追踪 API：查询热搜标题被偷偷修改的历史记录
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from datetime import timedelta
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from typing import List, Optional
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from fastapi import APIRouter, Depends, Query
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from sqlalchemy.orm import Session
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from app.api.dependencies import get_db
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from app.models.models import HeadlineRevision, InfoSource, TrendingEvent, utcnow
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from pydantic import BaseModel, ConfigDict
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from datetime import datetime
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router = APIRouter()
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class HeadlineRevisionResponse(BaseModel):
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"""标题修改记录响应体"""
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id: int
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event_id: int
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previous_headline: str
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revised_headline: str
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source_name: Optional[str] = None
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platform_icon: Optional[str] = None
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created_at: datetime
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model_config = ConfigDict(from_attributes=True)
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@router.get("/headline-revisions", response_model=List[HeadlineRevisionResponse])
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def list_headline_revisions(
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hours: int = Query(48, ge=1, le=720, description="查询最近多少小时内的修改记录"),
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limit: int = Query(50, ge=1, le=500, description="最多返回条数"),
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db: Session = Depends(get_db),
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):
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"""
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获取最近的标题修改记录列表。
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用于公关监测：发现哪些平台偷偷改了热搜标题。
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"""
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time_limit = utcnow() - timedelta(hours=hours)
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rows = (
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db.query(HeadlineRevision, InfoSource.source_name)
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.join(TrendingEvent, HeadlineRevision.event_id == TrendingEvent.id)
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.join(InfoSource, TrendingEvent.source_id == InfoSource.id)
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.filter(HeadlineRevision.created_at >= time_limit)
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.order_by(HeadlineRevision.created_at.desc())
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.limit(limit)
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.all()
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)
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# 平台名到图标的简单映射
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icon_map = {
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"微博热搜": "weibo",
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"知乎热榜": "zhihu",
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"百度热搜": "baidu",
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"今日头条": "toutiao",
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"抖音热榜": "douyin",
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"B站热搜": "bilibili",
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}
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results: list[HeadlineRevisionResponse] = []
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for revision, source_name in rows:
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results.append(
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HeadlineRevisionResponse(
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id=revision.id,
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event_id=revision.event_id,
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previous_headline=revision.previous_headline,
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revised_headline=revision.revised_headline,
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source_name=source_name,
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platform_icon=icon_map.get(source_name, "newspaper"),
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created_at=revision.created_at,
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)
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)
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return results
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