import urllib2
import json
import time
from email.mime.text import MIMEText
import smtplib

JSONurl = 'http://reddit.com/new/.json?feed=apikey&user=username'
prevIDs = []

def sendMail(subject, message):
    fromaddr = 'from@gmail.com'
    toaddr = 'to@gmail.com'

    username = 'from@gmail.com'
    password = 'password'

    msg = MIMEText(message)
    msg['Subject'] = subject
    msg['To'] = toaddr
    msg['From'] = fromaddr

    session = smtplib.SMTP('smtp.gmail.com', 587)
    session.ehlo()
    session.starttls()
    session.ehlo
    session.login(username, password)

    session.sendmail(fromaddr, toaddr, msg.as_string())
    session.quit()

    time.sleep(1)

first = True
while True:
    request = urllib2.Request(JSONurl)
    request.add_header('User-Agent', 'brothers script')
    opener = urllib2.build_opener()
    JSONstring = opener.open(request).read()
    parsed = json.loads(JSONstring)

    print 'Loaded {} posts'.format(len(parsed['data']['children']))

    try:
        newcount = 0
        for post in parsed['data']['children']:
            postID = post['data']['id']
            if first:
                prevIDs.append(postID)
            elif not postID in prevIDs:
                prevIDs.append(postID)
                newcount += 1

                subject = 'Post on {0}: {1}'.format(post['data']['subreddit'],post['data']['title'])

                message = 'Link: {0}\nTitle: {1}'.format('http://reddit.com{}'.format(post['data']['permalink']),post['data']['title'])

                sendMail(subject, message)

        print '{} new'.format(newcount)
    except IndexError:
        print 'Invalid JSON'
    while len(prevIDs) > 100:
        prevIDs.pop(0)

    first = False
    time.sleep(5)