"""
script for regularly sending updates on shares and news based on user interval
"""
__author__ = "Florian Kellermann, Linus Eickhoff"
__date__ = "05.04.2022"
__version__ = "0.0.1" 
__license__ = "None"

from calendar import month
from shares.share_fetcher import get_share_price
import time
import datetime
from bot import bot
import sys
from multiprocessing import Process
from apscheduler.schedulers.blocking import BlockingScheduler
from api_handling.api_handler import API_Handler


'''
* * * * * code
┬ ┬ ┬ ┬ ┬
│ │ │ │ │
│ │ │ │ └──── weekday (0->Monday, 7->Sunday)
│ │ │ └────── Month (1-12)
│ │ └──────── Day (1-31)
│ └────────── Hour (0-23)
└──────────── Minute (0-59)

example 0 8 * * * -> daily update at 8am
'''
user_ids = []
user_crontab = []

def main_loop():
    """ main loop for regularly sending updates
    :raises: none

    :rtype: none
    """
    
    current_time_datetime = datetime.datetime.now()
    my_handler = API_Handler("https://gruppe1.testsites.info/api", "bot@example.com", "bot")
    
    print(time.ctime()) # Debug
    
    """p1 = Process(target= update_crontab, args=(current_time_datetime, my_handler )) 
    p1.start()
    time.sleep(5)
    p3 = Process(target= update_based_on_crontab, args=() )
    p3.daemon = True
    p3.start()
    p1.join()
    p3.terminate()
    p1.terminate()"""
    
    update_crontab(current_time_datetime, my_handler)
    
    
def update_crontab(pCurrent_Time, p_my_handler):
    """ Updating crontab lists every hour
    :type pCurrent_Time: time when starting crontab update
    :param pCurrent_Time: datetime

    :raises: none

    :rtype: none
    """
    
    global user_crontab
    global user_ids
    
    p_my_handler.set_cron_interval(user_id = 1770205310, cron_interval = "8 17 * * *")
    
    all_users = p_my_handler.get_all_users()
    
    user_ids = []
    user_crontab = []
    
    for element in all_users:
        if element["cron"] != '' and element["telegram_user_id"] != '':
            user_ids.append(int(element["telegram_user_id"]))
            user_crontab.append(str(element["cron"]))
    
    print(user_ids)
    update_based_on_crontab(user_ids, user_crontab)

    p1 = Process(target= sleeping_time, args=(pCurrent_Time, )) 
    p1.start()
    p3 = Process(target= update_based_on_crontab, args=(user_ids, user_crontab ) )
    p3.daemon = True
    p3.start()
    p1.join()
    p3.terminate()
    p1.terminate()
    
    update_crontab(datetime.datetime.now(), p_my_handler)
    
    
    
def sleeping_time(pCurrent_Time):
    while True:
        time_difference = datetime.datetime.now() - pCurrent_Time
        print(time_difference)
        if float(str(time_difference).split(':')[1]) >=1: # every minute (0:00:03.646070) -> example time code
            update_crontab(datetime.datetime.now())
            break
    
def update_based_on_crontab(p_user_ids, p_user_crontab):
    
    my_scheduler = BlockingScheduler()
    
    print("update based on cron")
    
    print(len(user_ids)) #Debug
    
    for i in range(len(p_user_ids)):
        print("in loop")
        cron_split = p_user_crontab[i].split(" ")
        print(cron_split[4], cron_split[1], cron_split[0], cron_split[3], cron_split[2])
        my_scheduler.add_job(update_for_user, 'cron', day_of_week = cron_split[4] , hour= cron_split[1] , minute = cron_split[0], month= cron_split[3] , day=cron_split[2], args=(p_user_ids[i], ))
    
    my_scheduler.start()
                    
def update_for_user(p_user_id):
    print("updating for {p_user_id}")     
    
def send_to_user(pText, pUser_id = 1770205310):
    
    """ Send message to user
    :type pText: string
    :param pText: Text to send to user

    :type pUser_id: int
    :param pUser_id: user to send to. per default me (Florian Kellermann)

    :raises: none

    :rtype: none
    """
    bot.send_message(chat_id=pUser_id, text=pText)


if __name__ == "__main__":
    
    print('This script shall not be run directly. Starting main_loop for debugging purposes.')
    try:
        main_loop()
        sys.exit(-1)
    except KeyboardInterrupt:
        print("Ending")
        sys.exit(-1)