#!/usr/bin/env python3
import sys
import smtplib
from email.mime.text import MIMEText

email_user = "" # the FROM address (ex. user@gmail.com)
email_pass = "" # plain-text password (ex. password123)
email_host = "" # the smtp server to use (ex. smtp://gmail.com)
email_port = 587 # the port to use


helptext = "send_email <to_addr> <subj> [body]    \n" + \
           "reads from stdin if body not provided \n"

if len(sys.argv) < 3:
    print(helptext)
    sys.exit(-1)

toaddr = sys.argv[1]
subj = sys.argv[2]


if len(sys.argv) > 3:
    body = sys.argv[3]
else:
    body = sys.stdin.read()


msg = MIMEText(body)
msg['Subject'] = subj
msg['To'] = toaddr
msg['From'] = email_user
try:
    server = smtplib.SMTP(email_host, email_port) # establish connection
    server.ehlo() # say hello
    server.starttls() # start tls ecryption
    server.login(email_user, email_pass) # verify sender
    server.sendmail(email_user, [toaddr], msg.as_string()) # send mail
    server.close() # close connection
    print('sent successfully')
except Exception as e:
    print('failed to send', e)