#!/usr/bin/python

# Copyright 2007 Michael Stevens mstevens@etla.org

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (
# at your option) any later version.

# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
# USA


import urllib, urllib2
from sys import stdin, stdout, stderr

from optparse import OptionParser

parser = OptionParser(version="%prog 1.0")

parser.add_option("-u", "--username", dest="username",
				  help="Your twitter account username or email")
parser.add_option("-p", "--password", dest="password",
				  help="Your twitter account password")

(options, args) = parser.parse_args()

email = options.username
password = options.password

class MessageError(Exception):
	pass

if email == None:
	parser.error("-u is a required option")

if password == None:
	parser.error("-p is a required option")

body = ""

line = stdin.readline()

while line:
	if line == ".\n":
		break
	else:
		body += line
	line = stdin.readline()
	
if len(body) > 140:
	raise MessageError, "Message is more than 140 characters."

def twitterPost(email, password, message):
	# Create an OpenerDirector with support for Basic HTTP Authentication...
	auth_handler = urllib2.HTTPBasicAuthHandler()
	auth_handler.add_password('Twitter API', 'twitter.com', email, password)
	opener = urllib2.build_opener(auth_handler)
	# ...and install it globally so it can be used with urlopen.
	urllib2.install_opener(opener)

	data = urllib.urlencode({"status" : body})
	res = urllib2.urlopen("http://twitter.com/statuses/update.xml", data)

twitterPost(email, password, body)