jarvis/backend/skills/timers.py

import requests

if __name__ == "__main__": # Handle running this script directly vs as a project
	from config import ntfy_url
	from utility import parsetime2
else:
	from skills.config import ntfy_url
	from skills.utility import parsetime2


import threading
import schedule
import time

# def job_that_executes_once():
    # Do some work that only needs to happen once...
    # return schedule.CancelJob


def run_continuously(schedule, interval=1): 
	# Borrowed from schedule documentation, why reinvent the wheel when its been created.
    """Continuously run, while executing pending jobs at each
    elapsed time interval.
    @return cease_continuous_run: threading. Event which can
    be set to cease continuous run. Please note that it is
    *intended behavior that run_continuously() does not run
    missed jobs*. For example, if you've registered a job that
    should run every minute and you set a continuous run
    interval of one hour then your job won't be run 60 times
    at each interval but only once.
    """
    cease_continuous_run = threading.Event()

    class ScheduleThread(threading.Thread):
        @classmethod
        def run(cls):
            while not cease_continuous_run.is_set():
                schedule.run_pending()
                time.sleep(interval)

    continuous_thread = ScheduleThread()
    continuous_thread.start()
    return cease_continuous_run


# while True:
#     schedule.run_pending()
#     time.sleep(1)


class Timers:
	def __init__(self):
		self.trigger_phrase = "timer"
		self.timers = {}
		self.schedule = schedule.Scheduler()


	def _notify(self, device_id, timer_name):
		r = requests.post(f"https://ntfy.sh/{device_id}",
				data=f"{timer_name}",
				headers={
					"Title": "Your timer is going off!",
					"Priority": "default",
					"Tags": "bell"
				})
		return r

	def _add_timer(self, duration, name):
		if len(self.timers) == 0:
			self.stop_run_continuously = run_continuously(self.schedule)
		self.timers[name] = time.mktime(duration.timetuple())
		self.schedule.every().day.at(time.strftime("%H:%M:%S", duration.timetuple())).do(self._trigger_timer, name).tag(name)
		# use https://schedule.readthedocs.io/en/stable/examples.html#run-a-job-once to trigger self._trigger_timer()

	def _remove_timer(self, name):
		del self.timers[name]
		if len(self.timers) == 0:
			self.stop_run_continuously.set()

	def _trigger_timer(self, name):
		if name in self.timers:
			res = self._notify(ntfy_url, name).text
			print(res)

			self._remove_timer(name)

		# TODO: play timer done sound, send response on api saying to listen to ntfy.sh for signal to trigger sound.
		# Better option for two way communication: WEBSOCKETS!
		return schedule.CancelJob

	def get_remaining_time(self, name=""): #TODO: test this function
		"""Returns time remaining for timer as seconds remaining"""
		return self.timers[name]-time.mktime(datetime.now().timetuple())
		# if name == "":


	def run(self, query="", duration_string="", name=""):
		if "add" in query:
			# duration = time.mktime(parsetime2(duration_string).timetuple())
			duration = parsetime2(duration_string)
			self._add_timer(duration, name)
			return True # Return true to indicate success
		if "remove" in query:
			self._remove_timer(name)
			return True
		return False # Return false to indicate failure

	def _disable_timer_check_thread(self):
		self.stop_run_continuously.set()


if __name__ == "__main__":
	dur = Timers()
	dur.run("add", "15 seconds", "test timer")
	# dur._add_timer(123, "123")
	# dur._trigger_timer("123")