p08-seo-tweaks

backend/main.py

@@ -2,8 +2,9 @@ import logging
 import os
 
 from apscheduler.schedulers.background import BackgroundScheduler
-from fastapi import Depends, FastAPI, Query
+from fastapi import Depends, FastAPI, Query, Request
 from fastapi.middleware.cors import CORSMiddleware
+from fastapi.middleware.gzip import GZipMiddleware
 from fastapi.staticfiles import StaticFiles
 from fastapi.responses import FileResponse
 from sqlalchemy.orm import Session
@@ -20,6 +21,7 @@ from backend.repository import (
     get_translation,
     normalize_language,
     resolve_news_content,
+    resolve_summary_fields,
 )
 from backend.schemas import HealthResponse, NewsItemResponse, PaginatedNewsResponse
 
@@ -39,6 +41,30 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
+app.add_middleware(GZipMiddleware, minimum_size=500)
+
+
+@app.middleware("http")
+async def add_cache_headers(request: Request, call_next):
+    response = await call_next(request)
+    path = request.url.path
+
+    if path.startswith("/static/"):
+        response.headers.setdefault("Cache-Control", "public, max-age=604800, immutable")
+    elif path.startswith("/api/"):
+        response.headers.setdefault(
+            "Cache-Control", "public, max-age=60, stale-while-revalidate=120"
+        )
+        response.headers.setdefault("Vary", "Accept-Encoding")
+    elif path in {"/", "/terms", "/attribution"}:
+        response.headers.setdefault(
+            "Cache-Control", "public, max-age=300, stale-while-revalidate=600"
+        )
+
+    response.headers.setdefault("X-Content-Type-Options", "nosniff")
+    return response
+
+
 static_dir = os.path.join(os.path.dirname(__file__), "static")
 app.mount("/static", StaticFiles(directory=static_dir), name="static")
 
@@ -101,6 +127,7 @@ def api_get_news(
         if lang != "en":
             translation = get_translation(db, item.id, lang)
         headline, summary = resolve_news_content(item, translation)
+        tldr_points, summary_body, source_citation = resolve_summary_fields(item, translation)
         response_items.append(
             NewsItemResponse(
                 id=item.id,
@@ -109,6 +136,11 @@ def api_get_news(
                 source_url=item.source_url,
                 image_url=item.image_url,
                 image_credit=item.image_credit,
+                tldr_points=tldr_points,
+                summary_body=summary_body,
+                source_citation=source_citation,
+                summary_image_url=item.summary_image_url,
+                summary_image_credit=item.summary_image_credit,
                 published_at=item.published_at,
                 created_at=item.created_at,
                 language=lang if translation is not None else "en",
@@ -136,6 +168,7 @@ def api_get_latest_news(
     if lang != "en":
         translation = get_translation(db, item.id, lang)
     headline, summary = resolve_news_content(item, translation)
+    tldr_points, summary_body, source_citation = resolve_summary_fields(item, translation)
     return NewsItemResponse(
         id=item.id,
         headline=headline,
@@ -143,6 +176,11 @@ def api_get_latest_news(
         source_url=item.source_url,
         image_url=item.image_url,
         image_credit=item.image_credit,
+        tldr_points=tldr_points,
+        summary_body=summary_body,
+        source_citation=source_citation,
+        summary_image_url=item.summary_image_url,
+        summary_image_credit=item.summary_image_credit,
         published_at=item.published_at,
         created_at=item.created_at,
         language=lang if translation is not None else "en",
@@ -163,6 +201,16 @@ async def serve_frontend() -> FileResponse:
     return FileResponse(os.path.join(frontend_dir, "index.html"))
 
 
+@app.get("/terms")
+async def serve_terms() -> FileResponse:
+    return FileResponse(os.path.join(frontend_dir, "terms.html"))
+
+
+@app.get("/attribution")
+async def serve_attribution() -> FileResponse:
+    return FileResponse(os.path.join(frontend_dir, "attribution.html"))
+
+
 @app.get("/config")
 async def serve_config() -> dict:
     return {