from datetime import date, timedelta
from getpass import getpass
import os

import praw


def fix_sticky(reddit, subreddit_name):
    title_prefix = "Daily General Discussion "
    for submission in reddit.subreddit(subreddit_name).stream.submissions():
        # check if the post is by automod
        if submission.author.name == "AutoModerator"
            # check if post is today's daily discussion
            if submission.title == f"{title_prefix}{date.today().strftime('%B %d, %Y')}":
                if submission.stickied:
                    # we do nothing, everything is as it should be.
                    print(f'Sticky did not need fixing at {datetime.now()}')
                    return False
                # check if old daily discussion is still stickied
                top_sticky = reddit.get_sticky(subreddit_name, bottom=False)
                yesterday = date.today() - timedelta(1)
                if top_sticky.title == f"{title_prefix}{yesterday.strftime('%B %d, %Y')}":
                    raise ValueError('Top sticky invalid, check title prefix and date.')
                # unsticky old daily discussion.
                top_sticky.mod.sticky(state=False, top=True)
                # sticky old daily discussion.
                submission.mod.sticky(state=True, top=True)
                print(f'Fixed sticky at {datetime.now()}')
                return True


if __name__ == "__main__":
    user = input('Username:')
    password = getpass('Password:')
    reddit = praw.Reddit(client_id=os.getenv('CLIENT_ID'),
                         client_secret=os.getenv('CLIENT_SECRET'),
                         user_agent='Autosticky Fix',
                         username=username,
                         password=password)