Implement the logging and blocking features

log.py

@@ -1,5 +1,5 @@
 #!/usr/bin/python3
-from telethon import TelegramClient, events
+from telethon import TelegramClient, events, functions, types
 from config import *
 
 client = TelegramClient('telelog', api_id, api_hash)
@@ -7,12 +7,22 @@ client = TelegramClient('telelog', api_id, api_hash)
 @client.on(events.NewMessage)
 async def log(event):
 	if event.is_private:
-		f = open(str(event.chat_id), "a")
 		if event.sender_id != myid:
 			#Incoming message
+			try:
+				f = open(str(event.chat_id))
+			except IOError:
+				chat = await event.get_input_chat()
+				rpl  = "This account does not accept private messages. "
+				rpl += "My userbot will block you now. "
+				rpl += "Please reach out to me in a common group if applicable. "
+				await event.respond(rpl)
+				await client(functions.contacts.BlockRequest(chat))
+			f = open(str(event.chat_id), "a")
 			f.write(str(event.id) + ": " + str(event.chat_id) + " => " + str(myid) + "\n")
 		else:
 			#Outgoing message
+			f = open(str(event.chat_id), "a")
 			f.write(str(event.id) + ": " + str(event.sender_id) + " => " + str(event.chat_id) + "\n")
 		f.write(event.raw_text + "\n")
 		f.close()