pdf-uniter-bot/bot.py

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#!/usr/bin/env python
import os
import os.path as pt
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import shutil
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from telegram.ext import Updater, CommandHandler, MessageHandler, filters
import config
def on_start(upd, ctx):
message = ("Welcome to PDF Uniter.\n"
"To get started, simply send images that will be compiled into "
"a pdf in the order they are sent. Once completed, send /finish "
"to receive a pdf. In case of errors, send /cancel to restart.")
ctx.bot.send_message(upd.effective_chat.id, message)
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def on_img_received(upd, ctx):
biggest_img = list(sorted(
upd.message.photo,
key=lambda photo: (photo.width, photo.height),
reverse=True
))[0].get_file()
user_id = upd.effective_chat.id
os.makedirs(f"data/{user_id}", exist_ok=True)
existing_files = [int(i) for i in os.listdir(f"data/{user_id}")]
if existing_files:
new_name = max(existing_files) + 1
else:
new_name = 1
biggest_img.download(f"data/{user_id}/{new_name:04}")
ctx.bot.send_message(upd.effective_chat.id, f"Added image {new_name}")
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def on_finish(upd, ctx):
pass
def on_cancel(upd, ctx):
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user_id = upd.effective_chat.id
path = f"data/{user_id}"
if pt.isdir(path):
shutil.rmtree(f"data/{user_id}")
ctx.bot.send_message(upd.effective_chat.id, f"Cleared images")
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updater = Updater(token=config.API_KEY, use_context=True)
dispatcher = updater.dispatcher
dispatcher.add_handler(CommandHandler("start", on_start))
dispatcher.add_handler(MessageHandler(filters.Filters.photo, on_img_received))
dispatcher.add_handler(CommandHandler("finish", on_finish))
dispatcher.add_handler(CommandHandler("cancel", on_cancel))
def main():
"Main Function"
updater.start_polling()
if __name__ == "__main__":
main()