Add help and ping commands

Signed-off-by: lzzy12 <jhashivam2020@gmail.com>

bot/__main__.py

@@ -3,23 +3,45 @@ from bot import dispatcher, LOGGER, updater, aria2
 import bot.mirror, bot.list, bot.mirror_status, bot.cancel_mirror
 from bot.helper import fs_utils
 import signal
+import time
+from bot.helper.message_utils import *
 
 
 @run_async
 def start(update, context):
     print(update)
-    context.bot.send_message(chat_id=update.message.chat_id, text="I'm a bot, please talk to me!")
+    sendMessage("This is a bot which can mirror all your links to Google drive!\n"
+                "Type /help to get a list of available commands", context, update)
 
 
-LOGGER.info('__main__.py')
+@run_async
+def ping(update, context):
+    start_time = int(round(time.time() * 1000))
+    reply = sendMessage("Starting Ping", context, update)
+    end_time = int(round(time.time()*1000))
+    editMessage(f'{end_time - start_time} ms', context, reply)
+
+
+@run_async
+def bot_help(update, context):
+    help_string = f'/help: To get this message\n' \
+                  f'/mirror [download_url][magnet_link]: Start mirroring the link to google drive\n' \
+                  f'/cancel: Reply to the message by which the download was initiated and that download will be cancelled\n' \
+                  f'/status: Shows a status of all the downloads\n' \
+                  f'/list [search term]: Searches the search term in the Google drive, if found replies with the link'
+    sendMessage(help_string, context, update)
 
 
 def main():
 
     start_handler = CommandHandler('start', start)
+    ping_handler = CommandHandler('ping', ping)
+    help_handler = CommandHandler('help', bot_help)
     dispatcher.add_handler(start_handler)
-    LOGGER.info("Bot Started!")
+    dispatcher.add_handler(ping_handler)
+    dispatcher.add_handler(help_handler)
     updater.start_polling()
+    LOGGER.info("Bot Started!")
     signal.signal(signal.SIGINT, fs_utils.exit_clean_up)