added scheduler

bot.py

@@ -16,6 +16,7 @@ import db
 import tools
 import config
 import loader
+import scheduler
 from trigger import Trigger
 
 class Fulvia(irc.IRCClient):
@@ -97,6 +98,9 @@ class Fulvia(irc.IRCClient):
 		self._disabled_modules = config.disabled_modules
 		"""These modules will NOT be loaded when load_modules() is called."""
 
+		self.scheduler = scheduler.Scheduler(self)
+		"""The bot's task scheduler."""
+
 		self.load_modules()
 
 

scheduler.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+"""
+Allows the bot to scheduler tasks to be performed later.
+"""
+import time
+import pickle
+import threading
+from datetime import datetime
+
+class Scheduler:
+	def __init__(self, bot):
+		self.bot = bot
+		self.tasks = []
+		self.lock = threading.Lock()
+		self._t = threading.Thread(target=self.loop)
+		self._t.start()
+
+	def loop(self):
+		while True:
+			self.lock.acquire()
+			tasks_due = [t for t in self.tasks if t[1] <= datetime.now()]
+			for task in tasks_due:
+				args = (self.bot,) + task[2]
+				t = threading.Thread(target=task[0], args=args)
+				t.start()
+				self.tasks.remove(task)
+			self.lock.release()
+			time.sleep(5)
+
+	def add_task(self, func, dt, args):
+		"""
+		`func` - The function to call. Must accept `bot` as the first
+		argument. Must be picklable.
+		`dt` - A datetime object representing when to call the function.
+		`args` - Arguments to call the function with, not including `bot`.
+		"""
+		self.lock.acquire()
+		self.tasks.append((func, dt, args))
+		self.lock.release()
+		# db
+
+	def add_periodic_task(self):
+		pass