#!/usr/local/bin/python

'''
Classes to make life with E-mail easier
'''


import os, re, string
__version__ = '0.53'


class Sender:
	'''\
E-mail sending classes 

m = Email.Sender()
m.sender = 'me@here.com'
m.recipient = 'you@there.com'
m.subject = 'test mail'
m.body = 'hey, ho!'
m.other_headers['X-foo'] = 'bar'
try:
	m.send()
except ValueError:
	print 'bad mail address. aborted.'	
except:
	print 'problem sending mail.'		
'''

	def __init__(self, mail_program='/usr/lib/sendmail'):
		self.mail_program = mail_program
		self.sender = os.environ.get('LOGNAME', '')
		self.recipient = ''
		self.subject = ''
		self.body = ''
		self.other_headers = {	'Status': '',
							 }

	def send(self):
		''' send e-mail '''
		
		if not check_address(self.sender):
			raise ValueError, 'invalid sender'
		if not check_address(self.recipient):
			raise ValueError, 'invalid recipient'

		mail = os.popen(string.join((self.mail_program, self.recipient), ' '), 'w')
		mail.write("Return-Path: %s\n" % (self.sender))
		mail.write("From: %s\n" % (self.sender))
		mail.write("To: %s\n" % (self.recipient))
		mail.write("Subject: %s\n" % (self.subject))
		for header, text in self.other_headers.items():
			mail.write("%s: %s\n" % (header, text))
		mail.write("\n")
		mail.write(self.body)
		mail.write("\n")
		mail.close()



_address_pat = '^[^@]+@([\w\-_]+\.)+[\w\-_]{2,3}$'

def check_address(address=''):
	''' address validator; returns true if valid '''

	if re.search(_address_pat, address, re.IGNORECASE):
		return 1
	else:
		return 0