# -*- coding: utf-8 -*-
from __future__ import print_function
import willie

monitored_nodes = None

def setup(bot):
	global monitored_nodes

	# load list of monitored nodes from disk
	monitored_nodes = shelve.open('monitorednodes', writeback=True)

def shutdown(bot):
	global monitored_nodes

	# store list of monitored nodes to disk
	if not monitored_nodes is None:
		monitored_nodes.sync()
		monitored_nodes.close()
		monitored_nodes = None

@willie.module.interval(3*60)
def ffpb_monitor_ping(bot):
	"""Ping jeden Knoten der gemonitort wird."""

	notify_target = bot.config.core.owner
	if (not bot.config.ffpb.msg_target is None):
		notify_target = bot.config.ffpb.msg_target

	for node in monitored_nodes:
 		added = monitored_nodes[node][0]		
		last_status = monitored_nodes[node][1]
		last_check = monitored_nodes[node][2]

		current_status = ffpb_ping(bot=None, target_name=node)
		monitored_nodes[node] = ( added, current_status, time.time() )
		print("Monitoring ({0}) {1} (last: {2} at {3})".format(node, current_status, last_status, time.strftime('%Y-%m-%d %H:%M', time.localtime(last_check))))
		if last_status != current_status and (last_status or current_status):
 			if last_check is None:
				# erster Check, keine Ausgabe
				continue

			if current_status == True:
				bot.msg(notify_target, 'Monitoring: Knoten \'{0}\' pingt wieder (zuletzt {1})'.format(node, pretty_date(last_check)))
			else:
				bot.msg(notify_target, 'Monitoring: Knoten \'{0}\' DOWN'.format(node))

@willie.module.commands('monitor')
def ffpb_monitor(bot, trigger):
	"""Monitoring-Funktion des Bots,
	Subkommandos add, del, info und list"""

	# command is for bot admins only
 	if not trigger.admin:
		bot.say('Ich ping hier nicht für jeden durch die Weltgeschichte.')
		return

	# ensure the user gave arguments (group 2 is the concatenation of all following groups)
	if trigger.group(2) is None or len(trigger.group(2)) == 0:
		bot.say('Da s Monitoring sagt du hast doofe Ohren.')
		return

	# read additional arguments
	cmd = trigger.group(3)
	node = trigger.group(4)
	if not node is None: node = str(node)

	if cmd == "add":
		if node in monitored_nodes:
			bot.say('Knoten \'{0}\' wird bereits gemonitored.'.format(node))
			return
		monitored_nodes[node] = ( trigger.sender, None, None )
		bot.say('Knoten \'{0}\' wird jetzt ganz genau beobachtet.'.format(node))
		return

	if cmd == "del":
		if not node in monitored_nodes:
			bot.say('Knoten \'{0}\' war gar nicht im Monitoring?!?'.format(node))
			return
		del monitored_nodes[node]
		bot.say('Okidoki, \'{0}\' war mir sowieso egal.'.format(node))
		return

	if cmd == "info":
		if node in monitored_nodes:
			info = monitored_nodes[node]
			bot.say('Knoten \'{0}\' wurde zuletzt {1} gepingt (Ergebnis: {2}) - der Auftrag kam von {3}'.format(node, pretty_date(info[2]) if not info[2] is None else "^W noch nie", info[1], info[0]))
		else:
			bot.say('Knoten \'{0}\' ist nicht im Monitoring.'.format(node))
		return

	if cmd == "list":
		nodes = ""
		for node in monitored_nodes:
			nodes = nodes + " " + node
		bot.say('Monitoring aktiv für:' + nodes)
		return

	if cmd == "help":
		bot.say('Entweder "!monitor list" oder "!monitor {add|del|info} <node>"')
		return

	bot.say('Mit "' + str(cmd) + '" kann ich nix anfangen, probier doch mal "!monitor help".')