Update app.py

app.py

@@ -10,24 +10,52 @@ from Gradio_UI import GradioUI
 # Below is an example of a tool that does nothing. Amaze us with your creativity !
 
 @tool
-def calculator(operation: str) -> str:
-    """A simple calculator tool that safely evaluates basic math expressions.
-    
+def temperature_converter(operation: str) -> str:
+    """
+    A secure tool that converts temperatures between Celsius and Fahrenheit.
+
     Args:
-        operation: The mathematical expression to evaluate (e.g., "2 + 2", "5 * 3"). 
-                  Supports basic operations (+, -, *, /) and parentheses.
-    
+        operation (str): A conversion request in the format "<value> <unit> to <target_unit>" 
+                         (e.g., "100 C to F", "32 F to C").
+
     Returns:
-        str: The result of the calculation or an error message
+        str: The converted temperature result or an error message.
     """
     try:
-        allowed_chars = set("0123456789+-*/ .()")
+        # Define allowed characters for input validation
+        allowed_chars = set("0123456789CFcf toTO-.")
+        
         if not all(c in allowed_chars for c in operation):
-            return "Error: Only basic math operations allowed"
-        result = eval(operation, {"__builtins__": {}})
-        return f"Result: {result}"
+            return "Error: Invalid characters detected. Use the format '100 C to F'."
+
+        # Normalize input (remove extra spaces, make lowercase)
+        operation = operation.strip().upper().replace("TO", " to ")
+
+        # Parse the input format (e.g., "100 C to F")
+        parts = operation.split()
+        if len(parts) != 4 or parts[2] != "TO":
+            return "Error: Invalid format. Use the format '100 C to F'."
+
+        value, from_unit, _, to_unit = parts
+
+        # Ensure value is a valid float
+        try:
+            value = float(value)
+        except ValueError:
+            return "Error: Invalid temperature value."
+
+        # Perform the conversion
+        if from_unit == "C" and to_unit == "F":
+            result = (value * 9/5) + 32
+        elif from_unit == "F" and to_unit == "C":
+            result = (value - 32) * 5/9
+        else:
+            return "Error: Supported conversions are 'C to F' and 'F to C'."
+
+        return f"Result: {value}°{from_unit} = {result:.2f}°{to_unit}"
+
     except Exception as e:
-        return f"Error calculating {operation}: {str(e)}"
+        return f"Error processing the conversion: {str(e)}"
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str: