import os
import asyncio
import telegram
from flask import Flask, request
import uvicorn
from asgiref.wsgi import WsgiToAsgi

async def main():
    app = Flask(__name__)

    chat = os.environ["CHAT_ID"]
    bot = telegram.Bot(os.environ["TOKEN"])
    async with bot:

        @app.route("/")
        def hello_world():
            return "<p>Hello, World!</p>"

        @app.route("/push", methods = ["POST"])
        async def push():
            title = request.form.get('title', None)
            body = request.form.get('body', 'No body')
            if title is None:
                await bot.send_message(chat, text = body, parse_mode = 'html')
            else:
                await bot.send_message(chat, text = '<b>' + title + '</b>\n\n' + body, parse_mode = 'html')
            return 'ok'

        webserver = uvicorn.Server(
            config=uvicorn.Config(
                app=WsgiToAsgi(app),
                port=os.environ.get("PORT", 8000),
                use_colors=False,
                host="0.0.0.0",
            )
        )

        await webserver.serve()

if __name__ == "__main__":
    asyncio.run(main())