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import os
import threading
from flask import Flask, render_template, request, jsonify
from rss_processor import fetch_rss_feeds, process_and_store_articles, vector_db, download_from_hf_hub, upload_to_hf_hub
import logging
import time
from datetime import datetime
app = Flask(__name__)
# Setup logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)
# Global flag to track background loading
loading_complete = False
last_update_time = time.time()
def load_feeds_in_background():
global loading_complete, last_update_time
try:
logger.info("Starting background RSS feed fetch")
articles = fetch_rss_feeds()
logger.info(f"Fetched {len(articles)} articles")
process_and_store_articles(articles)
last_update_time = time.time() # Update timestamp when new articles are added
logger.info("Background feed processing complete")
# Upload updated DB to Hugging Face Hub
upload_to_hf_hub()
loading_complete = True
except Exception as e:
logger.error(f"Error in background feed loading: {e}")
loading_complete = True
@app.route('/')
def index():
global loading_complete, last_update_time
# Check if the database needs to be loaded (first time or empty)
db_exists = os.path.exists("chroma_db") and vector_db.get().get('documents')
if not db_exists:
# First load: DB doesn't exist or is empty
loading_complete = False
logger.info("Downloading Chroma DB from Hugging Face Hub...")
download_from_hf_hub()
threading.Thread(target=load_feeds_in_background, daemon=True).start()
elif not loading_complete:
# Background loading is still in progress from a previous request
pass # Let it continue, spinner will show
else:
# DB exists and loading is complete, no spinner needed
loading_complete = True
try:
# Retrieve all articles from Chroma DB
all_docs = vector_db.get(include=['documents', 'metadatas'])
if not all_docs.get('metadatas'):
logger.info("No articles in DB yet")
return render_template("index.html", categorized_articles={}, has_articles=False, loading=not loading_complete)
# Process and categorize articles, getting only 10 most recent per category with strict deduplication
enriched_articles = []
seen_keys = set()
for doc, meta in zip(all_docs['documents'], all_docs['metadatas']):
if not meta:
continue
title = meta.get("title", "No Title").strip()
link = meta.get("link", "").strip()
published = meta.get("published", "Unknown Date").strip()
key = f"{title}|{link}|{published}"
if key not in seen_keys:
seen_keys.add(key)
try:
published = datetime.strptime(published, "%Y-%m-%d %H:%M:%S").isoformat() if "Unknown" not in published else published
except (ValueError, TypeError):
published = "1970-01-01T00:00:00"
enriched_articles.append({
"title": title,
"link": link,
"description": meta.get("original_description", "No Description"),
"category": meta.get("category", "Uncategorized"),
"published": published,
"image": meta.get("image", "svg"),
})
enriched_articles.sort(key=lambda x: x["published"], reverse=True)
categorized_articles = {}
for article in enriched_articles:
cat = article["category"]
if cat not in categorized_articles:
categorized_articles[cat] = []
key = f"{article['title']}|{article['link']}|{article['published']}"
if key not in [f"{a['title']}|{a['link']}|{a['published']}" for a in categorized_articles[cat]]:
categorized_articles[cat].append(article)
for cat in categorized_articles:
unique_articles = []
seen_cat_keys = set()
for article in sorted(categorized_articles[cat], key=lambda x: x["published"], reverse=True):
key = f"{article['title']}|{article['link']}|{article['published']}"
if key not in seen_cat_keys:
seen_cat_keys.add(key)
unique_articles.append(article)
categorized_articles[cat] = unique_articles[:10]
logger.info(f"Displaying articles: {sum(len(articles) for articles in categorized_articles.values())} total")
return render_template("index.html",
categorized_articles=categorized_articles,
has_articles=True,
loading=not loading_complete)
except Exception as e:
logger.error(f"Error retrieving articles: {e}")
return render_template("index.html", categorized_articles={}, has_articles=False, loading=not loading_complete)
@app.route('/search', methods=['POST'])
def search():
query = request.form.get('search')
if not query:
logger.info("Empty search query received")
return jsonify({"categorized_articles": {}, "has_articles": False, "loading": False})
try:
logger.info(f"Searching for: {query}")
results = vector_db.similarity_search(query, k=10)
logger.info(f"Search returned {len(results)} results")
enriched_articles = []
seen_keys = set()
for doc in results:
meta = doc.metadata
title = meta.get("title", "No Title").strip()
link = meta.get("link", "").strip()
published = meta.get("published", "Unknown Date").strip()
key = f"{title}|{link}|{published}"
if key not in seen_keys:
seen_keys.add(key)
enriched_articles.append({
"title": title,
"link": link,
"description": meta.get("original_description", "No Description"),
"category": meta.get("category", "Uncategorized"),
"published": published,
"image": meta.get("image", "svg"),
})
categorized_articles = {}
for article in enriched_articles:
cat = article["category"]
categorized_articles.setdefault(cat, []).append(article)
logger.info(f"Found {len(enriched_articles)} unique articles across {len(categorized_articles)} categories")
return jsonify({
"categorized_articles": categorized_articles,
"has_articles": bool(enriched_articles),
"loading": False
})
except Exception as e:
logger.error(f"Search error: {e}")
return jsonify({"categorized_articles": {}, "has_articles": False, "loading": False}), 500
@app.route('/check_loading')
def check_loading():
global loading_complete, last_update_time
if loading_complete:
return jsonify({"status": "complete", "last_update": last_update_time})
return jsonify({"status": "loading"}), 202
@app.route('/get_updates')
def get_updates():
global last_update_time
try:
all_docs = vector_db.get(include=['documents', 'metadatas'])
if not all_docs.get('metadatas'):
return jsonify({"articles": [], "last_update": last_update_time})
enriched_articles = []
seen_keys = set()
for doc, meta in zip(all_docs['documents'], all_docs['metadatas']):
if not meta:
continue
title = meta.get("title", "No Title").strip()
link = meta.get("link", "").strip()
published = meta.get("published", "Unknown Date").strip()
key = f"{title}|{link}|{published}"
if key not in seen_keys:
seen_keys.add(key)
try:
published = datetime.strptime(published, "%Y-%m-%d %H:%M:%S").isoformat() if "Unknown" not in published else published
except (ValueError, TypeError):
published = "1970-01-01T00:00:00" # Fallback to a very old date
enriched_articles.append({
"title": title,
"link": link,
"description": meta.get("original_description", "No Description"),
"category": meta.get("category", "Uncategorized"),
"published": published,
"image": meta.get("image", "svg"),
})
enriched_articles.sort(key=lambda x: x["published"], reverse=True)
categorized_articles = {}
for article in enriched_articles:
cat = article["category"]
if cat not in categorized_articles:
categorized_articles[cat] = []
# Extra deduplication for category
key = f"{article['title']}|{article['link']}|{article['published']}"
if key not in [f"{a['title']}|{a['link']}|{a['published']}" for a in categorized_articles[cat]]:
categorized_articles[cat].append(article)
# Limit to 10 most recent per category with final deduplication
for cat in categorized_articles:
unique_articles = []
seen_cat_keys = set()
for article in sorted(categorized_articles[cat], key=lambda x: x["published"], reverse=True):
key = f"{article['title']}|{article['link']}|{article['published']}"
if key not in seen_cat_keys:
seen_cat_keys.add(key)
unique_articles.append(article)
categorized_articles[cat] = unique_articles[:10]
return jsonify({"articles": categorized_articles, "last_update": last_update_time})
except Exception as e:
logger.error(f"Error fetching updates: {e}")
return jsonify({"articles": {}, "last_update": last_update_time}), 500
@app.route('/get_all_articles/<category>')
def get_all_articles(category):
try:
all_docs = vector_db.get(include=['documents', 'metadatas'])
if not all_docs.get('metadatas'):
return jsonify({"articles": [], "category": category})
enriched_articles = []
seen_keys = set()
for doc, meta in zip(all_docs['documents'], all_docs['metadatas']):
if not meta or meta.get("category") != category:
continue
title = meta.get("title", "No Title").strip()
link = meta.get("link", "").strip()
published = meta.get("published", "Unknown Date").strip()
key = f"{title}|{link}|{published}"
if key not in seen_keys:
seen_keys.add(key)
try:
published = datetime.strptime(published, "%Y-%m-%d %H:%M:%S").isoformat() if "Unknown" not in published else published
except (ValueError, TypeError):
published = "1970-01-01T00:00:00" # Fallback to a very old date
enriched_articles.append({
"title": title,
"link": link,
"description": meta.get("original_description", "No Description"),
"category": meta.get("category", "Uncategorized"),
"published": published,
"image": meta.get("image", "svg"),
})
enriched_articles.sort(key=lambda x: x["published"], reverse=True)
return jsonify({"articles": enriched_articles, "category": category})
except Exception as e:
logger.error(f"Error fetching all articles for category {category}: {e}")
return jsonify({"articles": [], "category": category}), 500
if __name__ == "__main__":
app.run(host="0.0.0.0", port=7860) |