import sys, random
import traceback
from typing import Sequence, AnyStr
from depytg import types, methods, errors

PHOTOS = (
    'http://filmmakermagazine.com/wp-content/uploads/2017/10/t-call-me-by-your-name.jpg',
    'https://s9.postimg.org/p89n5hzz3/photo_2018-01-29_21-47-01.jpg',
    'https://s9.postimg.org/hsadjpjzj/photo_2018-01-29_21-47-11.jpg',
    'https://s9.postimg.org/50w7d7xcv/photo_2018-01-29_21-47-17.jpg',
    'https://s9.postimg.org/iht5w2s8v/photo_2018-01-29_21-47-24.jpg',
    'https://s9.postimg.org/r02m0f6hb/photo_2018-01-29_21-47-32.jpg',
    'https://s9.postimg.org/dvx1nqtv3/photo_2018-01-29_21-47-39.jpg'
)

HELP_TEXT = """A bot that sends a picture of Elio whenever somebody types #TeamElio
Made with ❤ by @Depaulicious 🏳️‍🌈

Source code: https://git.depau.eu/Depaulicious/CallMeByYourBot
Based on DepyTG: https://github.com/Depaulicious/DepyTG"""


def send_help(token: AnyStr, msg: types.Message):
    send_msg = methods.sendMessage(msg.chat.id, HELP_TEXT)
    send_msg.reply_to_message_id = msg.message_id
    send_msg["disable_web_page_preview"] = True
    send_msg(token)


def parse_message(token: AnyStr, msg: types.Message):
    if not 'text' in msg:
        return

    if '#TeamElio' in msg.text:
        send_photo = methods.sendPhoto(chat_id=msg.chat.id)
        send_photo.reply_to_message_id = msg.message_id
        send_photo.photo = random.choice(PHOTOS)
        send_photo.caption = "#TeamElio"
        send_photo(token)
    elif "/help" in msg.text:
        if "group" in msg.chat.type:
            username = methods.getMe()(token).username
            if msg.text != "/help@{}".format(username):
                return
        send_help(token, msg)


def parse_update(token: AnyStr, update: types.Update) -> int:
    print(update)
    print()
    for i in ('message', 'edited_message', 'channel_post', 'edited_channel_post'):
        if i in update:
            parse_message(token, update[i])
            break
    return update.update_id


def on_updates(token: AnyStr, updates: Sequence[types.Update]) -> int:
    max_id = 0
    for u in updates:
        try:
            upd_id = parse_update(token, u)

            if upd_id > max_id:
                max_id = upd_id
        except errors.TelegramError:
            traceback.print_exc(file=sys.stderr)

    return max_id


def mainloop(token: AnyStr, offset: int = 0) -> int:
    updates = methods.getUpdates(offset)(token)
    return on_updates(token, updates)


def main():
    token = sys.argv[1]
    prev_offset = 0

    try:
        while True:
            prev_offset = mainloop(token, prev_offset) + 1
    except KeyboardInterrupt:
        pass


if __name__ == "__main__":
    main()