finished donation functinoality.

bot.py

@@ -4,14 +4,19 @@ import io
 import logging
 import os
 import random
-
 import mplfinance as mpf
+
 import telegram
-from telegram import InlineQueryResultArticle, InputTextMessageContent, LabeledPrice
+from telegram import (
+    InlineQueryResultArticle,
+    InputTextMessageContent,
+    LabeledPrice,
+)
 from telegram.ext import (
     CommandHandler,
     Filters,
     InlineQueryHandler,
+    PreCheckoutQueryHandler,
     MessageHandler,
     Updater,
 )
@@ -67,7 +72,7 @@ def donate(update, context):
         amount = update.message.text.replace("/donate", "").replace("$", "").strip()
     title = "Simple Stock Bot Donation"
     description = f"Simple Stock Bot Donation of ${amount}"
-    payload = "Simple Telegram Stock Bot"
+    payload = "simple-stock-bot"
     provider_token = STRIPE_TOKEN
     start_parameter = str(chat_id)
 
@@ -95,6 +100,20 @@ def donate(update, context):
     )
 
 
+def precheckout_callback(update, context):
+    query = update.pre_checkout_query
+
+    if query.invoice_payload == "simple-stock-bot":
+        # answer False pre_checkout_query
+        query.answer(ok=True)
+    else:
+        query.answer(ok=False, error_message="Something went wrong...")
+
+
+def successful_payment_callback(update, context):
+    update.message.reply_text("Thank you for your donation!")
+
+
 def symbol_detect(update, context):
     """
     Runs on any message that doesn't have a command and searches for symbols, then returns the prices of any symbols found.
@@ -377,6 +396,14 @@ def main():
     # Inline Bot commands
     dp.add_handler(InlineQueryHandler(inline_query))
 
+    # Pre-checkout handler to final check
+    dp.add_handler(PreCheckoutQueryHandler(precheckout_callback))
+
+    # Payment success
+    dp.add_handler(
+        MessageHandler(Filters.successful_payment, successful_payment_callback)
+    )
+
     # log all errors
     dp.add_error_handler(error)
 

commands

@@ -0,0 +1,8 @@
+donate - Donate to the bot 🎗️
+help - Get some help using the bot. 🆘
+info - $[symbol] General information about the symbol. ℹ️
+news - $[symbol] News about the symbol. 📰
+stat - $[symbol] Key statistics about the symbol. 🔢
+dividend - $[symbol] Dividend info 📅
+intra - $[symbol] Plot since the last market open.  📈
+chart - $[chart] Plot of the past month. 📊

functions.py

@@ -35,7 +35,7 @@ Keep up with the latest news for the bot in its Telegram Channel: https://t.me/s
 Full documentation on using and running your own stock bot can be found [here.](https://simple-stock-bots.gitlab.io/site)
 
 **Commands**
-        - /donate [amount in USD] to donate. 💵
+        - /donate [amount in USD] to donate. 🎗️
         - /dividend $[symbol] will return dividend information for the symbol. 📅
         - /intra $[symbol] Plot of the stocks movement since the last market open.  📈
         - /chart $[symbol] Plot of the stocks movement for the past 1 month. 📊
@@ -62,6 +62,8 @@ Example: `/donate 2` would donate 2 USD.
 An alternative way to donate is through https://www.buymeacoffee.com/Anson, which accepts Paypal or Credit card. 
 
 If you have any questions get in touch: @MisterBiggs or [anson@ansonbiggs.com](http://mailto:anson@ansonbiggs.com/)
+
+*Donations can only be made in a chat directly with @simplestockbot
     """
 
     def __init__(self, IEX_TOKEN: str):