#!/usr/bin/python3

from mastodon import Mastodon
from dateutil.parser import parse
import tweepy, wget, os, time, json

settings_path = './settings.json'

with open(settings_path, 'r+') as fp:
    settings = json.load(fp)
    fp.close()

mastodon_instance = settings["mastodon"]["instance"] 
clientcreds = settings["mastodon"]["clientcreds"]
transitions = settings["transitions"]

consumer_key = settings["twitter"]["consumer_key"]
consumer_secret = settings["twitter"]["consumer_secret"]
access_token_key = settings["twitter"]["access_token_key"]
access_token_secret = settings["twitter"]["access_token_secret"]


# Connect with Mastodon API
if not os.path.isfile(clientcreds):
    Mastodon.create_app(
        'MastoBot', api_base_url = mastodon_instance,
        to_file = clientcreds
    )


mastodon = Mastodon(client_id = clientcreds, api_base_url = mastodon_instance)

#Connect with Twitter API
auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
auth.set_access_token(access_token_key, access_token_secret)
twitter_api = tweepy.API(auth)

# Looping the accounts

for account in transitions:

    # Connect with Mastodon-Account
    try:
        usercreds = mastodon.log_in(
            account['masto_username'].lower(),
            account['masto_passwd']
        )
    except:
        print(account['masto_username'].lower())
        print("Login failed!")
        continue

    mastodon = Mastodon(
    client_id = clientcreds,
    access_token = usercreds,
    api_base_url = mastodon_instance
    )


    # Looping the twitter statuses
    statuses = twitter_api.user_timeline(screen_name = account['twitter_handle'], since_id = int(account['last_id']), count=25, tweet_mode="extended") 

    for status in reversed(statuses):

        mastodon_text = ""
        masto_media = []

        # Does a extended_entities Array exist and does it contain info about media?
        if "extended_entities" in status._json and "media" in status._json['extended_entities']:
            media = status._json['extended_entities']['media']

            # Post any media on Mastodon instance an save it to a list which will later be given to status.
            for medium in media:
                tmp_path = os.path.join("/tmp/", medium['id_str'] + '.jpg')
                if medium['type'] == 'photo':
                    photo = wget.download(medium['media_url_https'], tmp_path)
                    # masto_photo = mastodon.media_post(tmp_path)
                    # masto_media.append(masto_photo)

        # Is the post a retweet? Then give info about source to toot and get full text from there.
        if 'retweeted_status' in status._json:
            mastodon_text += "RT from " + status._json['retweeted_status']['user']['name'] + ": \n"

            tweet_text = status._json['retweeted_status']['full_text']
            tweet_origin = status._json['retweeted_status']['id_str']

            # derefering twitter short urls to expanded
            for url in status._json['retweeted_status']['entities']["urls"]:
                
                tweet_text = tweet_text.replace(url["url"], url["expanded_url"])


        else:
            tweet_text = status.full_text
            tweet_origin = status.id_str
            
            # derefering twitter short urls to expanded
            for url in status.entities["urls"]:
                
                tweet_text = tweet_text.replace(url["url"], url["expanded_url"])

        mastodon_text += tweet_text
        # Add info about source and a related link to toot.
        mastodon_text += "\n\nPosted " + parse(str(status.created_at)).strftime("%d. %B %Y - %H:%M on Twitter")
        mastodon_text += "\nOrigin: https://twitter.com/" + account['twitter_handle'] + "/status/" + tweet_origin

		# Make sure that 500 char limit of Mastodon-API doesn't break the script                                                                               
        if len(mastodon_text) > 500:
        	mastodon_text = mastodon_text[:489]
        
        
        # Output text to stdout respect. post it to Mastodon.
        print(mastodon_text)
        
        try:
        #    mastodon.status_post(mastodon_text, None, masto_media, True, None,spoiler_text="Twitter RT")
            continue

        except:
            print(account['twitter_handle'] + " couldn't toot to fediverse!\n")
            continue


        # mastodon.status_post(mastodon_text, None, masto_media, True)
        time.sleep(2)

    # If there are new statuses for account update the "last_id" to the newest one.
    if statuses:
        print(account['twitter_handle'] + " : " + str(status.id))
        #account['last_id'] = str(status.id)

# Write updated settings to json-file
with open(settings_path, 'w') as fp:
    json.dump(settings,fp)
    fp.close()