TelegramEDT/bot.py

import logging, shelve, datetime, hashlib, asyncio
from aiogram import Bot, Dispatcher, executor, types
from aiogram.types import InlineQuery, InputTextMessageContent, InlineQueryResultArticle, ParseMode, reply_keyboard
from aiogram.utils import markdown
from ics import Calendar
from ics.parse import ParseError
from requests import get
from requests.exceptions import ConnectionError, InvalidSchema, MissingSchema
from threading import RLock
from asyncio import sleep

API_TOKEN = open("token.ini").read()
logging.basicConfig(level=logging.INFO)
bot = Bot(token=API_TOKEN)
dp = Dispatcher(bot)
dbL = RLock()


def edt(text, user_id):
    with dbL:
        with shelve.open("edt", writeback=True) as db:
            if str(user_id) not in db or "url" not in db[str(user_id)]:
                return markdown.bold("Your EDT is not set ! ❌")
            now = datetime.datetime.now(datetime.timezone.utc).astimezone(tz=None)
            if text.lower() == "week":
                firstdate = now.date() - datetime.timedelta(days=now.isoweekday()-1)
                lastdate = now.date() + datetime.timedelta(days=(7 - now.isoweekday()))
            elif text.lower() == "next":
                now += datetime.timedelta(days=7)
                firstdate = now.date() - datetime.timedelta(days=now.isoweekday())
                lastdate = now.date() + datetime.timedelta(days=(7 - now.isoweekday()))
            elif text == "" or text.lower() == "day":
                firstdate, lastdate = now.date(), now.date()
            else:
                return markdown.bold("Invalid choice ! ❌")

            url = f"{db[str(user_id)]['url']}&firstDate={firstdate}&lastDate={lastdate}"
            c = Calendar(get(url).text)
            msg = list()
            days = list()

            for e in list(c.timeline):
                begin = e.begin.datetime.replace(tzinfo=datetime.timezone.utc).astimezone(tz=None)
                end = e.end.datetime.replace(tzinfo=datetime.timezone.utc).astimezone(tz=None)
                if begin.date() not in days:
                    days.append(begin.date())
                    msg.append(markdown.bold(f"<{str(begin.date())[5:]}>"))

                msg.append(markdown.code(f"📓[{e.name}]:"))
                msg.append(markdown.text(f"⌚️ {str(begin.time())[:-3]} -> {str(end.time())[:-3]}"))
                prof = markdown.text(e.description.split('\n')[3])
                msg.append(markdown.italic(f"📍 {e.location} 👨‍🏫 {prof}" + "\n"))

            if len(msg) == 0:
                msg.append(markdown.italic("but nobody came..."))
            return markdown.text(*msg, sep="\n")


async def notif():
    while True:
        with dbL:
            with shelve.open("edt", writeback=True) as db:
                for u in db:
                    if ("url" in db[u]) and ("notif" in db[u]) and (db[u]["notif"]["state"]):
                        now = datetime.datetime.now(datetime.timezone.utc).astimezone(tz=None)
                        c = Calendar(get(f"{db[u]['url']}&firstDate={now.date()}&lastDate={now.date()}").text)
                        for e in c.events:
                            event = e.begin.datetime.replace(tzinfo=datetime.timezone.utc).astimezone(tz=None)
                            if (event - now).seconds/60 <= db[u]["notif"]["time"] and\
                                    (now - db[u]["notif"]["last"]).seconds/60 >= db[u]["notif"]["cooldown"]:
                                db[u]["notif"]["last"] = now

                                msg = markdown.text(
                                    markdown.text("🔔"),
                                    markdown.code(e.name),
                                    markdown.text("in"),
                                    markdown.bold((event - now).seconds//60),
                                    markdown.text("minutes !"),
                                    sep="\n"
                                )
                                await bot.send_message(int(u), msg, parse_mode=ParseMode.MARKDOWN)
        await sleep(60)


@dp.message_handler(commands=["start", "help"])
async def send_welcome(message: types.Message):
    with dbL:
        with shelve.open("edt", writeback=True) as db:
            if str(message.from_user.id) not in db:
                db[str(message.from_user.id)] = dict()

    msg = markdown.text(
        markdown.text("💠 Welcome to the TelegramEDT, a calendar bot for the Lyon 1 University ! 💠\n"),
        markdown.text(
            markdown.text("🗓"),
            markdown.code("/edt [day | week | next]"),
            markdown.text(", for show your next course")
        ),
        markdown.text(
            markdown.text("🔔"),
            markdown.code("/notif <set | info | time number | cooldown number>"),
            markdown.text(", setup notifications")
        ),
        markdown.text(
            markdown.text("⚙️"),
            markdown.code("/setedt <url>"),
            markdown.text(", to setup your calendar")
        ),
        markdown.text(
            markdown.text("🔗"),
            markdown.code("/getedt"),
            markdown.text(", to get your calendar url")
        ),
        markdown.text(
            markdown.text("ℹ️"),
            markdown.code("/help"),
            markdown.text(", to show this command")
        ),
        sep="\n"
    )
    await message.reply(msg, parse_mode=ParseMode.MARKDOWN)


@dp.message_handler(commands=["edt"])
@dp.message_handler(lambda msg: msg.text.lower() in ["day", "week", "next"])
async def edt_cmd(message: types.Message):
    text = message.text
    if message.text[:4] == "/edt":
        text = message.text[5:]
    resp = edt(text, message.from_user.id)
    key = reply_keyboard.ReplyKeyboardMarkup()
    key.add(reply_keyboard.KeyboardButton("Day"))
    key.add(reply_keyboard.KeyboardButton("Week"))
    key.add(reply_keyboard.KeyboardButton("Next"))
    await message.reply(resp, parse_mode=ParseMode.MARKDOWN, reply_markup=key)


@dp.inline_handler()
async def inline_echo(inline_query: InlineQuery):
    text = inline_query.query
    if text not in ["day", "week", "next", ""]:
        text = "invalid"
    res = edt(text, inline_query.from_user.id)
    input_content = InputTextMessageContent(res)
    result_id: str = hashlib.md5(res.encode()).hexdigest()
    item = InlineQueryResultArticle(
        id=result_id,
        title=f"Your {text} course",
        input_message_content=input_content
    )
    await bot.answer_inline_query(inline_query.id, results=[item], cache_time=1)


@dp.message_handler(commands=["setedt"])
async def edt_set(message: types.Message):
    url_http = message.text.find("http")
    url_end = message.text.find(" ", url_http)
    if url_end == -1:
        url_end = None
    url = message.text[url_http:url_end]

    try:
        Calendar(get(url).text)
    except (ParseError, ConnectionError, InvalidSchema, MissingSchema, ValueError):
        msg = markdown.bold("Invalid URL ! ❌")
    else:
        if "calType=vcal" in url:
            url = url[:url.find("vcal")] + "ical"
        elif "firstDate" in url:
            url = url[:url.find("&firstDate")]

        with dbL:
            with shelve.open("edt", writeback=True) as db:
                db[str(message.from_user.id)]["url"] = url
        msg = markdown.text("EDT set ✅")

    await message.reply(msg, parse_mode=ParseMode.MARKDOWN)


@dp.message_handler(commands=["getedt"])
async def edt_geturl(message: types.Message):
    with dbL:
        with shelve.open("edt", writeback=True) as db:
            if (str(message.from_user.id) in db) and ("url" in db[str(message.from_user.id)]):
                await message.reply(db[str(message.from_user.id)]["url"])
            else:
                await message.reply("No EDT set ! ❌")


@dp.message_handler(commands=["notif"])
async def notif_cmd(message: types.Message):
    with dbL:
        with shelve.open("edt", writeback=True) as db:
            if "notif" not in db[str(message.from_user.id)]:
                db[str(message.from_user.id)]["notif"] = dict()
                db[str(message.from_user.id)]["notif"]["state"] = False
                db[str(message.from_user.id)]["notif"]["time"] = 20
                db[str(message.from_user.id)]["notif"]["cooldown"] = 20
                last = datetime.datetime.now(datetime.timezone.utc).astimezone(tz=None) - datetime.timedelta(minutes=20)
                db[str(message.from_user.id)]["notif"]["last"] = last

            if message.text[7:10] == "set":
                if db[str(message.from_user.id)]["notif"]["state"]:
                    res = False
                else:
                    res = True

                db[str(message.from_user.id)]["notif"]["state"] = res

                msg = markdown.text(
                    markdown.text("Notifications set on "),
                    markdown.code(res),
                    markdown.text("✅")
                )
            elif message.text[7:11] == "time" or message.text[7:15] == "cooldown":
                cut = 11 if message.text[7:11] == "time" else 15
                try:
                    int(message.text[cut+1:])
                except ValueError:
                    msg = markdown.bold("Invalid number ! ❌")
                else:
                    db[str(message.from_user.id)]["notif"][message.text[7:cut]] = int(message.text[cut+1:])

                    msg = markdown.text(
                        markdown.text("Notification"),
                        markdown.code(message.text[7:cut]),
                        markdown.text("set to"),
                        markdown.bold(message.text[cut+1:]),
                        markdown.text("✅")
                    )
            elif message.text[7:11] == "info":
                msg = markdown.text(
                    markdown.code("Notification:"),
                    markdown.text(
                      markdown.bold("State:"),
                      markdown.text(db[str(message.from_user.id)]["notif"]["state"])
                    ),
                    markdown.text(
                        markdown.bold("Time:"),
                        markdown.text(db[str(message.from_user.id)]["notif"]["time"])
                    ),
                    markdown.text(
                        markdown.bold("Cooldown:"),
                        markdown.text(db[str(message.from_user.id)]["notif"]["cooldown"])
                    ),
                    sep="\n"
                )
            else:
                msg = markdown.bold("Invalid action ! ❌")

            await message.reply(msg, parse_mode=ParseMode.MARKDOWN)


if __name__ == '__main__':
    loop = asyncio.get_event_loop()
    loop.create_task(notif())
    loop.create_task(executor.start_polling(dp, skip_updates=True))
    loop.run_forever()