Update app.py

app.py

@@ -503,7 +503,7 @@ router_task = Task(
 Based on the user's query, decide which agent or tool is best suited to handle it:
 - If the query is related to the content of an uploaded file (e.g., 'what is this document about?'), send it to the **Document QA Agent**.
 - If the query contains words like 'summarize', 'summary', or 'main points', use the **Summarizer Agent**.
-- If the query involves any kind of math, calculation, percentage, angle, log, sqrt, cos, sin, arithmetic expressions, or includes phrases like "how much", "calculate", "what is X + Y", "x^2 + y^2", send it to the **Math Agent**.
+- If the query **includes any numbers or symbols** (like +, -, *, /, %, ^), or **mentions math terms** (like 'calculate', 'how much', 'percent', 'square root', 'log', 'cos', 'sin', etc.), or starts with 'what is', 'what’s', 'how much is', assume it is a **math question** and send it to the **Math Agent**.
 - If the user uploaded a CSV file and asks about table content, data trends, or uses words like 'data', 'table', 'csv', 'column', or 'row', send it to the **CSV Agent**.
 - If the user asks about current events, trending topics, or online information (e.g., 'What is LangChain?', 'latest news'), send it to the **Search Agent**.
 - If the query is about current date, time, or day of week (e.g., 'what is today\\'s date?', 'what time is it?', 'what day is it?'), send it to the **Search Agent** instead of the General Agent.
@@ -549,7 +549,8 @@ def multi_agent_chat_advanced(query: str, file=None) -> str:
     lower_query = query.lower()
 
     
-    if re.match(r"^[a-zA-Z\d\s\+\-\*\/\%\(\)\.]+$", lower_query):
+    math_keywords = ["how much", "calculate", "what is", "what’s", "%", "sin", "cos", "log", "sqrt", "^", "*", "/", "+", "-", "="]
+    if any(k in lower_query for k in math_keywords):
         return _calc_tool(query)
 
     date_keywords = ["what date", "today", "what time", "what day", "現在幾點", "今天幾號", "禮拜幾"]