import struct

class NutellaPacket:
    def __init__(self, Id: int, secret_code: str, package_size: int, nutella_eater: str):
        self.Id = Id
        self.secret_code = secret_code
        self.package_size = package_size
        self.nutella_eater = nutella_eater

    def serialize(self):
        b_secret_code = bytearray(self.secret_code, 'ascii')  # Convert String into byte Array (Networks) # b' Networks
        b_nutella_eater = bytearray(self.nutella_eater, 'ascii')  # Convert String into byte Array (Yara) # b' Yara
        secret_code_size = len(self.secret_code)  # Networks -> 8 = len (Networks)
        nutella_eater_size = len(self.nutella_eater)  # Yara -> 4 = len (Yara)

        myarray = struct.pack("I%dsi%ds" % (secret_code_size, nutella_eater_size), self.Id, b_secret_code,
                              self.package_size, b_nutella_eater)

        unpacked_array = (struct.unpack("I%dsi%ds" % (secret_code_size, nutella_eater_size), myarray))

        return list(myarray), list(unpacked_array)


np = NutellaPacket(4708, 'Networks', 4096, 'Yara')
print("After Packing:", np.serialize()[0], "After Unpacking", np.serialize()[1], sep=" ")  # Byte values