create a simple interactive prompt

apns.py

@@ -50,7 +50,7 @@ class IncomingQueue:
         with self.lock:
             self.queue.append(item)
 
-    def pop(self, index):
+    def pop(self, index = -1):
         with self.lock:
             return self.queue.pop(index)
 

demo.py

@@ -108,7 +108,44 @@ with open("config.json", "w") as f:
 
 im = imessage.iMessageUser(conn, user)
 
+# Create a thread to take user input
+INPUT_QUEUE = apns.IncomingQueue()
+
+def input_thread():
+    while True:
+        from prompt_toolkit import prompt
+
+        try:
+            msg = prompt('>> ')
+        except:
+            msg = 'quit'
+        INPUT_QUEUE.append(msg)
+
+threading.Thread(target=input_thread, daemon=True).start()
+        
+        
 while True:
     msg = im.receive()
     if msg is not None:
         print(f"Got message {msg}")
+    
+    if len(INPUT_QUEUE) > 0:
+        msg = INPUT_QUEUE.pop()
+        if msg == 'help' or msg == 'h':
+            print('help (h): show this message')
+            print('quit (q): quit')
+            print('send (s) [recipiant] [message]: send a message')
+        elif msg == 'quit' or msg == 'q':
+            break
+        elif msg.startswith('send') or msg.startswith('s'):
+            msg = msg.split(' ')
+            if len(msg) < 3:
+                print('send [recipiant] [message]')
+            else:
+                imsg = imessage.iMessage()
+                imsg.text = ' '.join(msg[2:])
+                imsg.participants = [msg[1], user.handles[0]]
+                imsg.sender = user.handles[0]
+
+                im.send(imsg)
+