import io
import sys
import ast
from logger import logger

def run_code(code):
    """
    Executes user-provided Python code and captures its output.
    Handles user input dynamically and detects defined functions.

    Parameters:
        code (str): Python code entered by the user.

    Returns:
        dict: Captured output and logged inputs.
    """
    # Redirect stdout to capture code output
    old_stdout = sys.stdout
    redirected_output = sys.stdout = io.StringIO()

    # Create a dedicated execution namespace
    exec_globals = {}

    # Store user inputs
    input_log = []

    # Custom input function to simulate input() behavior
    def custom_input(prompt=""):
        user_input = input(prompt)  # Prompt the user dynamically
        input_log.append(user_input)
        return user_input

    # Add the custom input function to the execution namespace
    exec_globals["input"] = custom_input

    try:
        # Parse the code to detect function definitions
        tree = ast.parse(code)
        function_names = [
            node.name for node in ast.walk(tree) if isinstance(node, ast.FunctionDef)
        ]

        # Execute the code in the dedicated namespace
        exec(code, exec_globals)

        # Check if functions are defined but not called
        captured_output = redirected_output.getvalue()
        if function_names:
            captured_output += f"\n\nDefined functions: {', '.join(function_names)}\n"
            captured_output += "Note: Functions need to be explicitly called to see their output."

        return {"output": captured_output, "inputs": input_log}

    except Exception as e:
        logger.error(f"Execution error: {e}")
        return {"output": f"Error: {e}", "inputs": input_log}
    finally:
        # Reset stdout
        sys.stdout = old_stdout