#!/usr/bin/env python

import sys
import smtplib
import optparse
from os.path import basename
import datetime
from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.utils import COMMASPACE, formatdate

def send_mail(hostname, port, username, password,
		send_from, send_to, subject, text, files=None):
	assert isinstance(send_to, list)
	
	msg = MIMEMultipart()
	msg['From'] = send_from
	msg['To'] = COMMASPACE.join(send_to)
	msg['Date'] = formatdate(localtime=True)
	msg['Subject'] = subject

	msg.attach(MIMEText(text))

	for f in files or []:
		with open(f, "rb") as fil:
			part = MIMEApplication(
				fil.read(),
				Name=basename(f)
			)
		# After the file is closed
		part['Content-Disposition'] = \
			'attachment; filename="%s"' % basename(f)
		msg.attach(part)
	
	smtp = smtplib.SMTP(hostname, port)
	smtp.ehlo()
	smtp.starttls()
	smtp.ehlo()
	smtp.login(username, password)

	smtp.sendmail(send_from, send_to, msg.as_string())
	smtp.close()

parser = optparse.OptionParser(usage='%prog --user <user> --passwd <pass> --host <host> [--port <port] --from_addr <from> --to_addr <to, comma separated> --subj <subject> [--attach <files, comma separated>', description='Sends an email. All options are passed in by parameter, including the body. The username is your SMTP mail server\'s username.\n')

parser.add_option('--user', default=None, help='Username')
parser.add_option('--passwd', default=None, help='Password')
parser.add_option('--host', default=None, help='Hostname (SMTP server)')
parser.add_option('--port', default=587, help='Port (usually 587 or 25)')
parser.add_option('--from_addr', default=None, help='From (email)')
parser.add_option('--to_addr', default=None, help='To (email, list)')
parser.add_option('--subj', default=None, help='Subject')
parser.add_option('--body', default=None, help='Body (opt)')
parser.add_option('--attach', default=None, help='Attachment (file)')

opts, args = parser.parse_args()

if (opts.user is None or opts.passwd is None or opts.host is None or
		opts.from_addr is None or opts.to_addr is None or
		opts.subj is None):
	parser.print_help()
	sys.exit(0)


date_object = datetime.date.today()
body = 'Board status update for %s\r\n\r\n' % date_object
if opts.body:
	body += opts.body

body += '\r\n\r\n'

send_mail(opts.host, opts.port, opts.user, opts.passwd,
	opts.from_addr, [opts.to_addr], opts.subj, body, [opts.attach])