import os.path
import sys
import feedparser
from mastodon import Mastodon
import json
import requests
import re
import sqlite3
from datetime import datetime, date, time, timedelta

if len(sys.argv) < 3:
    print("Usage: python3 tootbot.py twitter_account mastodon_login mastodon_passwd mastodon_instance")
    sys.exit(1)

# sqlite db to store processed tweets (and corresponding toots ids)
sql = sqlite3.connect('tootbot.db')
db = sql.cursor()
db.execute('''CREATE TABLE IF NOT EXISTS tweets (tweet text, toot text, twitter text, mastodon text, instance text)''')

if len(sys.argv)>3:
    instance = sys.argv[4]
else:
    instance = 'amicale.net'

twitter = sys.argv[1]
mastodon = sys.argv[2]
passwd = sys.argv[3]

# Create application if it does not exist
if not os.path.isfile(instance+'.secret'):
    if Mastodon.create_app(
        'tootbot',
        api_base_url='https://'+instance,
        to_file = instance+'.secret'
    ):
        print('tootbot app created on instance '+instance)
    else:
        print('failed to create app on instance '+instance)
        sys.exit(1)

try:
    mastodon_api = Mastodon(
      client_id=instance+'.secret',
      api_base_url='https://'+instance
    )
    mastodon_api.log_in(
        username=mastodon,
        password=passwd,
        scopes=['read', 'write'],
        to_file=mastodon+".secret"
    )
except:
    print("ERROR: First Login Failed!")
    sys.exit(1)

d = feedparser.parse('http://twitrss.me/twitter_user_to_rss/?user='+twitter)

for t in reversed(d.entries):
    # check if this tweet has been processed
    db.execute('SELECT * FROM tweets WHERE tweet = ? AND twitter = ?  and mastodon = ? and instance = ?',(t.id, twitter, mastodon, instance))
    last = db.fetchone()

    # process only unprocessed tweets less than 1 day old
    if last is None and (datetime.now()-datetime(t.published_parsed.tm_year, t.published_parsed.tm_mon, t.published_parsed.tm_mday, t.published_parsed.tm_hour, t.published_parsed.tm_min, t.published_parsed.tm_sec) < timedelta(days=1)):
        #h = BeautifulSoup(t.summary_detail.value, "html.parser")
        c = t.title
        toot_media = []
        # get the pictures...
        for p in re.finditer(r"https://pbs.twimg.com/[^ \xa0\"]*", t.summary):
            media = requests.get(p.group(0))
            media_posted = mastodon_api.media_post(media.content, mime_type=media.headers.get('content-type'))
            toot_media.append(media_posted['id'])

        # replace t.co link by original URL
        m = re.search(r"http[^ \xa0]*", c)
        if m != None:
            l = m.group(0)
            r = requests.get(l, allow_redirects=False)
            if r.status_code in {301,302}:
                c = c.replace(l,r.headers.get('Location'))

        # remove pic.twitter.com links
        m = re.search(r"pic.twitter.com[^ \xa0]*", c)
        if m != None:
            l = m.group(0)
            c = c.replace(l,'')

        # remove ellipsis
        c = c.replace('\xa0…','')

        if toot_media is not None:
            toot = mastodon_api.status_post(c, in_reply_to_id=None, media_ids=toot_media, sensitive=False, visibility='public', spoiler_text=None)
            if "id" in toot:
                db.execute("INSERT INTO tweets VALUES ( ? , ? , ? , ? , ? )",
                (t.id, toot["id"], twitter, mastodon, instance))
                sql.commit()