messenger_module.py

import fbchat
import datetime

def getting_time_date():  #getting time and date to send the message
	year=int(input("enter the year"))
    month=int(input("enter the month"))
    date=int(input("enter the date"))
    hours=int(input("enter the hours"))
    minutes=int(input("enter the minutes"))
    seconds=int(input("enter the seconds"))
    send_time= datetime.datetime(year, month, date, hours, minutes, seconds)
    return send_time


def difference_in_seconds(send_time):
	curr_time = datetime.datetime.now()
	difference=send_time-curr_time
	seconds=difference.total_seconds()
	return seconds

send_time=getting_time_date()
seconds=difference(send_time)
if(seconds<0):
  print("Invalid send time, give a time in future not in past")
else:
  while(True):
    time.sleep(seconds)
    username = input("Username: ") #Enter the username
    client = fbchat.Client(username, getpass())
    name = input("Name: ") #Enter the friends username you wish to send the message
    friends = client.searchForUsers(name)  # return a list of names
    friend = friends[0]
    message = input("Message: ") #Enter the input message that needs to be send
    sent = client.sendMessage(message, thread_id=friend.uid)
    if sent:
        print("Message sent successfully!")

    break