#1065 Add event subcommand arguments

ogClient can be invoked with additional arguments to send
event datagrams to the default event datagram socket at
127.0.0.1 port 55885.

ogclient session events invokation syntax:

	ogclient event login foobar
	ogclient event logout foobar

If event commands arguments are detected, ogclient sends the
datagram and closes afterwards.

Datagram syntax for session event is:

	session [start | stop] [user]

ogclient

@@ -10,6 +10,7 @@
 
 import json
 import logging
+import argparse
 import subprocess
 try:
 	from signal import SIG_DFL, SIGPIPE
@@ -21,7 +22,36 @@ from src.ogClient import *
 from src.log import configure_logging
 
 
+def send_event_dgram(msg, ip='127.0.0.1', port=55885):
+	sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+	sock.sendto(bytes(msg, "utf-8"), (ip, port))
+
+
+def create_parser():
+	events = ['login', 'logout']
+	parser = argparse.ArgumentParser()
+	parser.set_defaults(func=None)
+	subparsers = parser.add_subparsers()
+
+	parser_event = subparsers.add_parser('event')
+
+	subparsers_event = parser_event.add_subparsers()
+	parser_event_login = subparsers_event.add_parser('login')
+	parser_event_login.set_defaults(func=lambda x: send_event_dgram(f'session start {x.user}'))
+	parser_event_login.add_argument('user', type=str)
+	parser_event_logout = subparsers_event.add_parser('logout')
+	parser_event_logout.set_defaults(func=lambda x: send_event_dgram(f'session stop {x.user}'))
+	parser_event_logout.add_argument('user', type=str)
+
+	return parser
+
+
 def main():
+	parser = create_parser()
+	args = parser.parse_args(sys.argv[1:])
+	if args.func:
+		args.func(args)
+		return
 	config_path = f'{ogClient.OG_PATH}cfg/ogclient.json'
 	try:
 		with open(config_path, 'r') as f: