import os.path as path
import json
import socket

class Module:
    def __init__(self, incoming=False, verbose=False, options=None):
        # extract the file name from __file__. __file__ is proxymodules/name.py
        self.name = path.splitext(path.basename(__file__))[0]
        self.description = 'Simply print the received data as text'
        self.incoming = incoming  # incoming means module is on -im chain
        self.find = None  # if find is not None, this text will be highlighted

    # protocol 3: flag{p4r4ll3l_fun}
    def execute(self, data):
        print(f"Incoming data: {data}")

        data_json = json.loads(data)
        if data_json["id"] == 1 and data_json["sender"] == "Bob":
            # send own Nonce instead of N_B
            data_json["content"] = '0'
        elif data_json["id"] == 2 and data_json["sender"] == "Alice":
            # start a parallel session with bob using Alice's Nonce N_A
            data_json["id"] = 1
            data_json["content"] = data_json["content"].split(',')[0]
        elif data_json["id"] == 2 and data_json["sender"] == "Bob":
            # Use Bob's signed answer to convince Alice, that we are Bob
            data_json["id"] = 3
        elif data_json["id"] == 3 and data_json["sender"] == "Alice":
            # Drop communication with Bob
            return bytes()
        
        data = bytes(json.dumps(data_json).replace(" ", "") + "\n", 'utf-8')
        print(f"Outgoing data: {data}")
        return data


if __name__ == '__main__':
    print('This module is not supposed to be executed alone!')