import sys
import re
from io import StringIO

if __name__ == "__main__":
    from tools import Tools
else:
    from sources.tools.tools import Tools

class PyInterpreter(Tools):
    """
    This class is a tool to allow agent for python code execution.
    """
    def __init__(self):
        super().__init__()
        self.tag = "python"

    def execute(self, codes:str, safety = False) -> str:
        """
        Execute python code.
        """
        output = ""
        if safety and input("Execute code ? y/n") != "y":
            return "Code rejected by user."
        stdout_buffer = StringIO()
        sys.stdout = stdout_buffer
        code = '\n\n'.join(codes)
        try:
            try:
                buffer = exec(code)
                if buffer is not None:
                    output = buffer + '\n'
            except Exception as e:
                return "code execution failed:" + str(e)
            output = stdout_buffer.getvalue()
        finally:
            sys.stdout = sys.__stdout__
        return output

    def interpreter_feedback(self, output:str) -> str:
        """
        Provide feedback based on the output of the code execution
        """
        if self.execution_failure_check(output):
            feedback = f"[failure] Error in execution:\n{output}"
        else:
            feedback = "[success] Execution success, code output:\n" + output
        return feedback

    def execution_failure_check(self, feedback:str) -> bool:
        """
        Check if the code execution failed.
        """
        error_patterns = [
            r"expected", 
            r"errno", 
            r"failed", 
            r"traceback", 
            r"invalid", 
            r"unrecognized", 
            r"exception", 
            r"syntax", 
            r"crash", 
            r"segmentation fault", 
            r"core dumped"
        ]
        combined_pattern = "|".join(error_patterns)
        if re.search(combined_pattern, feedback, re.IGNORECASE):
            return True
        return False

if __name__ == "__main__":
    codes = ["""
def test():
    print("Hello world")
test()
    """]
    py = PyInterpreter()
    print(py.execute(codes))