#!/usr/bin/env python

import os
import sys
import gtk
import smtplib

message = ''

def get_config(fname):
    config = {}
    fh = open(fname, 'r')
    script = fh.read()
    fh.close()
    exec(script, config)
    return config

def error_popup(err_msg):
    win = gtk.Window()
    lbl = gtk.Label(err_msg)
    button = gtk.Button('Close')
    vbox = gtk.VBox()
    vbox.pack_start(lbl)
    vbox.pack_start(button)
    win.add(vbox)
    win.connect('destroy', lambda x: gtk.main_quit())
    button.connect('clicked', lambda x: gtk.main_quit())
    win.show_all()
    gtk.main()
    win.hide()

def main(argv):
    config = {}
    for arg in argv[1:]:
        config = get_config(arg)
    if not ('server' in config and 'port' in config and 'user' in config
            and 'password' in config and 'to_addr' in config
            and 'from_addr' in config):
        sys.stderr.write('Missing a config field!\n')
        return 1

    win = gtk.Window()
    entry = gtk.Entry()
    entry.set_width_chars(80)
    win.add(entry)
    def activate_cb(*args):
        global message
        message = entry.get_text()
        gtk.main_quit()
    def cancel_cb(*args):
        gtk.main_quit()
    win.connect('destroy', cancel_cb)
    entry.connect('activate', activate_cb)
    win.show_all()
    gtk.main()
    win.hide()

    if message == '':
        return 0

    msg = '''From: <%s>
To: <%s>
Subject: %s

<EOM>
''' % (config['from_addr'], config['to_addr'], message)
    try:
        smtp = smtplib.SMTP_SSL(config['server'], config['port'])
        smtp.login(config['user'], config['password'])
        smtp.sendmail(config['from_addr'], config['to_addr'], msg)
        smtp.quit()
    except smtplib.SMTPHeloError:
        error_popup('Unable to connect to SMTP server')
    except smtplib.SMTPAuthenticationError:
        error_popup('Unable to authenticate to SMTP server')
    except smtplib.SMTPRecipientsRefused:
        error_popup('Recipients refused')
    except smtplib.SMTPSenderRefused:
        error_popup('Sender refused')
    except smtplib.SMTPDataError:
        error_popup('SMTP data error')
#    except:
#        error_popup('Unknown SMTP error')

    return 0

sys.exit(main(sys.argv))