adds alert for new messages

- messages are checked from the server every second
  and compared with the local log. Any message within
  the last 2 minutes which were pushed onto the server
  are shown as a notification.

main.py

@@ -1,3 +1,6 @@
+import time
+import ipdb
+import json
 import random
 import qrcode
 import requests
@@ -143,22 +146,42 @@ class Bump:
         if add_params != None:
             params.update(add_params)
 
-        r = requests.post(url, params)
+        messages = requests.post(url, params).json()
 
-        if r.json() == {} or r.json() == None:
-            return {}
-        elif type(r.json()) == list:
-            messages = []
-            for message in r.json():
-                messages.append(self.decrypt(message.get('data')))
+        if messages == {} or messages == None or messages == []:
+            return [{}]
+        elif type(messages) == list:
+            for message in messages:
+                message['data'] = self.decrypt(message.get('data'))
 
             return messages
         else:
-            return self.decrypt(r.json().get('data'))
+            messages['data'] = self.decrypt(messages.get('data'))
+            return [messages]
 
-    def alert(self):
+
+    def load_log(self):
+        with open('.bump_log', "r+") as f:
+            return f.readlines()
+
+    def save_log(self, message):
+        with open('.bump_log', "a") as f:
+            f.write(self.to_log_line(message))
+
+    def to_log_line(self, message):    
+        return json.dumps(message) + "\n"
+
+    def alert(self, sleep_time=1):
+        log = self.load_log()
         while True:
-            time.sleep(1)
+            time.sleep(sleep_time)
+            messages = self.list()
+            for message in messages:
+                if self.to_log_line(message) not in log and message != {}:
+                    print(message['data'])
+                    self.save_log(message)
+                    log = self.load_log()
+
 
 
 if __name__ == '__main__':