Update backend/app.py

backend/app.py

@@ -6,30 +6,23 @@ app = Flask(__name__)
 # --- Serve frontend files ---
 @app.route("/")
 def index():
-    # Serve the main page
     return send_from_directory("/app/frontend", "index.html")
 
 @app.route("/<path:filename>")
 def static_files(filename):
-    # Serve any file from the frontend folder
     return send_from_directory("/app/frontend", filename)
 
 
 # --- Moderation + Chat logic ---
-
-# In-memory per-session violation tracking
 violations = {}  # session_id -> count
 
-# Banned words list
 BANNED_KEYWORDS = {"sex", "sexual", "sexy", "porn", "xxx"}
-
 BANNED_REGEXES = [
-    re.compile(r"\bs\s*e\s*x\b", re.IGNORECASE),  # s e x with spaces
-    re.compile(r"se[x\W]+", re.IGNORECASE),       # sex with trailing non-letters
+    re.compile(r"\bs\s*e\s*x\b", re.IGNORECASE),
+    re.compile(r"se[x\W]+", re.IGNORECASE),
 ]
 
-# Immediate lockout after first violation
-MAX_VIOLATIONS = 1
+MAX_VIOLATIONS = 1  # immediate lockout
 
 def is_banned(text: str) -> bool:
     t = text.lower()
@@ -40,13 +33,12 @@ def is_banned(text: str) -> bool:
             return True
     return False
 
-
 @app.route("/moderate", methods=["POST"])
 def moderate():
     data = request.get_json(force=True)
     text = (data.get("text") or "").strip()
-
     session_id = request.headers.get("X-Session-Id", "")
+
     if not session_id:
         return jsonify({"allowed": False, "banned": True,
                         "reason": "Missing session.", "lock": True}), 200
@@ -63,13 +55,12 @@ def moderate():
 
     return jsonify({"allowed": True, "banned": False}), 200
 
-
 @app.route("/chat", methods=["POST"])
 def chat():
     data = request.get_json(force=True)
     text = (data.get("text") or "").strip()
-
     session_id = request.headers.get("X-Session-Id", "")
+
     if not session_id:
         return jsonify({"reply": "Missing session. Access denied."}), 200
 
@@ -77,15 +68,12 @@ def chat():
     if count >= MAX_VIOLATIONS:
         return jsonify({"reply": "banned"}), 200
 
-    # Minimal echo bot
     reply = f"You said: {text}"
     return jsonify({"reply": reply}), 200
 
-
 @app.route("/health")
 def health():
     return "Backend is running.", 200
 
-
 if __name__ == "__main__":
     app.run(host="0.0.0.0", port=7860)