import os
import tweepy
import random

def get_api():
    CONSUMER_KEY = os.environ['CONSUMER_KEY']
    CONSUMER_SECRET = os.environ['CONSUMER_SECRET']
    ACCESS_TOKEN = os.environ['ACCESS_TOKEN']
    ACCESS_TOKEN_SECRET = os.environ['ACCESS_TOKEN_SECRET']
    auth = tweepy.OAuthHandler(CONSUMER_KEY, CONSUMER_SECRET)
    auth.set_access_token(ACCESS_TOKEN, ACCESS_TOKEN_SECRET)
    return tweepy.API(auth)


def make_tweet(tweet):
    get_api().update_status(tweet)


def get_from_file(filename):
    with open(filename) as file:
        words = file.readlines()
    words = [word.strip() for word in words]
    words = list(set(words))


def get_topic():
    topics = get_from_file('topics')
    return random.choice(topics)


def get_modifier():
    modifiers = get_from_file('modifiers')
    return random.choice(modifiers)


def get_modifiers():
    n = random.randint(0,2)
    return [get_modifier() for _ in range(n)]


def lambda_handler(event, context):
    topic = get_topic()
    modifiers = get_modifiers()
    modifiers.append(topic)
    tweet = ' '.join(modifiers)
    tweet = tweet.replace('- ', '-')
    make_tweet('dsa ' + tweet + ' caucus')