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Backend falls back to fetched_at when published_at is NULL in the database, so the API always returns a meaningful date. Frontend also handles null defensively to avoid new Date(null) producing Unix epoch 0.
91 lines
3.5 KiB
Python
91 lines
3.5 KiB
Python
"""News endpoints — recent scored articles with filtering."""
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from __future__ import annotations
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from fastapi import APIRouter, Depends, Query, Request
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from services.api_gateway.auth.middleware import get_current_user
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from sqlalchemy import select, desc, func
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router = APIRouter(prefix="/api/news", tags=["news"])
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@router.get("")
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async def list_news(
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request: Request,
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_user: dict = Depends(get_current_user),
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ticker: str | None = Query(default=None),
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source: str | None = Query(default=None),
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min_score: float | None = Query(default=None, ge=-1.0, le=1.0),
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max_score: float | None = Query(default=None, ge=-1.0, le=1.0),
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page: int = Query(default=1, ge=1),
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per_page: int = Query(default=20, ge=1, le=100),
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page_size: int | None = Query(default=None, ge=1, le=100),
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) -> dict:
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"""Recent scored articles with optional filters."""
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from shared.models.news import Article, ArticleSentiment
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effective_per_page = page_size if page_size is not None else per_page
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db = request.app.state.db_session_factory
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async with db() as session:
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# Base query joining articles with sentiments
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query = (
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select(Article, ArticleSentiment)
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.join(ArticleSentiment, Article.id == ArticleSentiment.article_id)
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.order_by(desc(Article.fetched_at))
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)
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count_query = (
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select(func.count())
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.select_from(Article)
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.join(ArticleSentiment, Article.id == ArticleSentiment.article_id)
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)
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if ticker:
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query = query.where(ArticleSentiment.ticker == ticker.upper())
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count_query = count_query.where(
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ArticleSentiment.ticker == ticker.upper()
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)
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if source:
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query = query.where(Article.source == source)
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count_query = count_query.where(Article.source == source)
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if min_score is not None:
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query = query.where(ArticleSentiment.score >= min_score)
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count_query = count_query.where(ArticleSentiment.score >= min_score)
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if max_score is not None:
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query = query.where(ArticleSentiment.score <= max_score)
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count_query = count_query.where(ArticleSentiment.score <= max_score)
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total = (await session.execute(count_query)).scalar() or 0
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offset = (page - 1) * effective_per_page
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query = query.offset(offset).limit(effective_per_page)
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result = await session.execute(query)
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rows = result.all()
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return {
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"articles": [
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{
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"id": str(article.id),
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"source": article.source,
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"url": article.url,
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"title": article.title,
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"published_at": (
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article.published_at.isoformat()
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if article.published_at
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else article.fetched_at.isoformat()
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),
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"fetched_at": article.fetched_at.isoformat(),
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"ticker": sentiment.ticker,
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"sentiment_score": sentiment.score,
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"confidence": sentiment.confidence,
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"model_used": sentiment.model_used,
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}
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for article, sentiment in rows
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],
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"total": total,
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"page": page,
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"page_size": effective_per_page,
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"per_page": effective_per_page,
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"pages": (total + effective_per_page - 1) // effective_per_page if effective_per_page else 0,
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}
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