add rudimentary sentiment analysis endpoint to calculate average sentiment of posts

server/app.py

@@ -1,6 +1,7 @@
 from flask import Flask
 from db.database import Database
 from connectors.reddit_connector import RedditConnector
+from vaderSentiment.vaderSentiment import SentimentIntensityAnalyzer
 
 app = Flask(__name__)
 db = Database(db_name='ethnograph', user='ethnograph_user', password='ethnograph_pass')
@@ -31,5 +32,33 @@ def fetch_subreddit(subreddit, limit = 10):
 
     return {"status": "success", "inserted_posts": len(posts)}
 
+@app.route('/sentiment', methods=['GET'])
+def sentiment_analysis():
+    posts = db.execute_query(
+        "SELECT id, title, content FROM ethnograph.posts;"
+    )
+
+    analyzer = SentimentIntensityAnalyzer()
+
+    total_sentiment = 0.0
+    count = 0
+
+    for post in posts:
+        content = post.get("title")
+        if not content:
+            continue
+
+        score = analyzer.polarity_scores(content)["compound"]
+        total_sentiment += score
+        count += 1
+
+    average_sentiment = total_sentiment / count if count else 0.0
+
+    return {
+        "status": "success",
+        "average_sentiment": average_sentiment,
+        "posts_analyzed": count
+    }
+
 if __name__ == "__main__":
     app.run(debug=True)