import logging
import os

import requests
from telegram import Update
from telegram.constants import ParseMode
from telegram.ext import Application, CommandHandler, ContextTypes

# Enable logging
logging.basicConfig(
    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s", level=logging.INFO
)
# set higher logging level for httpx to avoid all GET and POST requests being logged
logging.getLogger("httpx").setLevel(logging.WARNING)
logger = logging.getLogger(__name__)


async def ping_command(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    ready_message = await context.bot.send_message(chat_id=update.effective_chat.id,
                                                   text="*️⃣ Requesting...")
    try:
        resp = requests.post(os.getenv("REQUEST_URL"), headers={'User-Agent': 'Custom'})
        message = f"✅ Server responded with HTTP status code *{resp.status_code}*."
    except Exception as e:
        message = "❌ Caught exception. Server is probably *offline*."
        dev_message = (f"Caught exception @ {update.effective_user.mention_markdown()} "
                       f"(`{update.effective_chat.id}`)\n"
                       f"```\n{e}```")
        await context.bot.send_message(chat_id=os.getenv("DEVELOPER_ID"),
                                       text=dev_message,
                                       parse_mode=ParseMode.MARKDOWN)
    await context.bot.edit_message_text(text=str(message),
                                        chat_id=ready_message.chat.id,
                                        message_id=ready_message.message_id,
                                        parse_mode=ParseMode.MARKDOWN)


def main() -> None:
    envs_not_set = False
    envs = ['BOT_TOKEN', 'REQUEST_URL', 'DEVELOPER_ID']
    for env in envs:
        if os.getenv(env) is None:
            envs_not_set = True
            print(f"{env} is not set.")
    if envs_not_set: exit(1)

    # Create the Application and pass it your bot's token.
    application = Application.builder().token(os.getenv("BOT_TOKEN")).build()

    application.add_handler(CommandHandler("ping", ping_command))

    # Run the bot until the user presses Ctrl-C
    application.run_polling(allowed_updates=Update.ALL_TYPES)


if __name__ == "__main__":
    main()