import time
import praw

CONFIG_OLDER_THAN    = 4 * 60 * 60 # Minimum submission age in seconds
CONFIG_INTERVAL      = 30 * 60 # Refresh interval in seconds
CONFIG_CLIENT_ID     = "" # Client ID from /prefs/apps
CONFIG_CLIENT_SECRET = "" # Client secret from /prefs/apps
CONFIG_USERNAME      = "" # Username for the bot account
CONFIG_PASSWORD      = "" # Password for the bot account
CONFIG_SUBREDDIT     = "" # Subreddit the script runs on
CONFIG_SCRIPTHOST    = "" # Your Reddit username
CONFIG_USER_AGENT    = "autoapprove 1.0 for /r/%s, hosted by /u/%s" \
                       %(CONFIG_SUBREDDIT, CONFIG_SCRIPTHOST)

def within_period(time1, time2):
    v = time1 - time2
    if CONFIG_OLDER_THAN > v: return 1
    elif v > (CONFIG_OLDER_THAN + CONFIG_INTERVAL): return 2
    return 0

def log(msg):
    print('[%s] %s'%(time.ctime(), msg))

def main():
    reddit = praw.Reddit(client_id = CONFIG_CLIENT_ID,
                         client_secret = CONFIG_CLIENT_SECRET,
                         username = CONFIG_USERNAME,
                         password = CONFIG_PASSWORD,
                         user_agent = CONFIG_USER_AGENT)
    while True:
        log('Scanning subreddit...')
        curtime = time.time()
        sub = reddit.subreddit(CONFIG_SUBREDDIT)
        apprv = 0
        for post in sub.new():
            create = within_period(curtime, post.created_utc)
            if create == 2: break
            if create == 1: continue
            if post.num_reports == 0 and not post.spam and not \
               post.approved and not post.removed:
                post.mod.approve()
                log('Approved post by /u/%s!'%post.author)
        nextiter = curtime + CONFIG_INTERVAL
        wait = (nextiter - time.time())
        if wait > 0:
            log('Sleeping for %d seconds.'%wait)
            time.sleep(wait)

if __name__ == '__main__':
    main()