import os
from fastapi import APIRouter
from dotenv import load_dotenv
from clients.redis_client import redis_client as r

load_dotenv()

router = APIRouter()

@router.get("/news/category/{category}")
def get_cached_articles_by_category(category: str, limit: int):
    try:
        article_ids = list(r.smembers(f"category:{category}"))[:limit]
        articles = []

        for article_id in article_ids:
            article_data = r.hgetall(f"article:{article_id}")
            if article_data:
                articles.append(article_data)

        return articles

    except Exception as e:
        print(f"[ERROR] Failed to fetch cached articles: {e}")
        return {"error": "Failed to fetch articles from cache."}


@router.get("/")
async def root():
    return {"message": "LucidFeed backend is up and running!"}