Add start command and base config

.gitignore

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+config.py
+__pycache__/

bot.py

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+#!/usr/bin/env python3
+
+import logging
+import telegram
+from telegram.ext import Updater, CommandHandler
+
+try:
+    import config
+except ImportError:
+    print("Missing Config. Exiting.")
+    exit()
+
+
+logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - \
+                    %(message)s', level=logging.INFO)
+
+
+def start(bot, update):
+    chat_id = update.message.chat_id
+    if chat_id != config.master_id:
+        text = "You need to host your own instance! \ Source: \
+                https://gitlab.com/ceda_ei/pc-monitor-bot"
+        bot.send_message(chat_id=chat_id, text=text)
+        return
+
+    custom_keyboard = [['/state', '/screenshot'], ['/lock', '/video']]
+    reply_markup = telegram.ReplyKeyboardMarkup(custom_keyboard)
+    bot.send_message(chat_id=chat_id,  text="What to do?",
+                     reply_markup=reply_markup)
+
+
+updater = Updater(token=config.api_key)
+dispatcher = updater.dispatcher
+
+start_handler = CommandHandler('start', start)
+dispatcher.add_handler(start_handler)
+updater.start_polling()

sample.config.py

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+# Create a new bot by messaging @BotFather and follow the instructions
+# Replace the key by the actual token recieved from BotFather
+api_key = "123456789:xxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+
+# Replace 123456789 with your own user id.
+master_id = 123456789