import praw
import os
import re
import time
import requests

#set the user agent string

user_agent = "Marco Rubio commentor v1"
r = praw.Reddit(user_agent = user_agent)

#login
username = 'rubio_bot'
password = 'password'

#xXEWmqHYLEux56nXw9tNRa

try:
	r.login(username, password, disable_warning=True)
except requests.exceptions.ConnectionError:
	print requests.exceptions.ConnectionError

#get the comments the program as already replied to from a file, else create an empty list

if not os.path.isfile("posts_replied_to.txt"):
    posts_replied_to = []
else:
    # Read the file into a list and remove any empty values
    with open("posts_replied_to.txt", "r") as f:
        posts_replied_to = f.read()
        posts_replied_to = posts_replied_to.split("\n")
        posts_replied_to = filter(None, posts_replied_to)


#get the most recent comments from r/politics

subreddit = r.get_subreddit('politics')

while(1):
	print "Checking for comments about Obama..."
	posted = False

	subreddit_comments = subreddit.get_comments()
	flat_comments = praw.helpers.flatten_tree(subreddit_comments)

	for comment in flat_comments:
		if comment.id not in posts_replied_to:
			if re.search("Obama ", comment.body, re.IGNORECASE):
				# Reply to the post
				try:
					comment.reply("""Let's dispel once and for all with this fiction that
Barack Obama doesn't know what he's doing, He knows exactly what he's doing.""")
					print "Bot replying to: ", comment.id
					posted = True

				except praw.errors.RateLimitExceeded:
					print "Rate limit exceeded. Sleeping five minutes."
					time.sleep(60 * 5 + 1)

            # Store the current id in our list
				posts_replied_to.append(comment.id)

	#Write our updated list back to the file and clear the list
	with open("posts_replied_to.txt", "a") as f:
		for post_id in posts_replied_to:
			f.write(post_id + "\n")
			print "Writing comment id: " + post_id + " to file"
	posts_replied_to = []

	if posted == True:
		print "Posted. Sleeping five minutes"
		time.sleep(60 * 5)
	else:
		print "Didn't find any comments about Obama. Sleeping one minute"
		time.sleep(60)