Add getting all and filtered messages endpoint

server/README.md

@@ -10,6 +10,7 @@
 * * * <a href="#get-roomsinfo">info</a>
 * * <a href="#messages">Messages</a>
 * * * <a href="#post-messagessend">send</a>
+* * * <a href="#get-messagesget">get</a>
 * <a href="#installation">Installation</a>
 
 # Environment variables
@@ -209,6 +210,41 @@ __Response:__
 }
 ```
 
+### GET `/messages/get`
+
+Getting all or filtered messages
+
+__Headers:__
+```
+{
+    Authorization: 'yourAPItoken'
+}
+```
+
+__GET arguments:__
+
+offset [optional] - count of messages for offset
+
+count [optional] - numeric value of count messages in response
+
+__Response:__
+```
+[
+    {
+        id: 19
+        text: 'Hello. This is text of message'
+        created: 1557615906
+        room: {
+            id: 5
+        }
+        user: {
+            id: 14
+        }
+    }
+]
+```
+
+
 # Installation
 
 It's very easy. Follow the instructions:

server/messages/urls.py

@@ -1,6 +1,7 @@
 from engine.route import Router
-from messages.views import send
+from messages.views import send, get
 
 
 router = Router()
 router.post('send', send.Route)
+router.get('get', get.Route)

server/messages/views/get.py

@@ -0,0 +1,38 @@
+from engine.views import View
+from users.models import UserProfile
+from messages.models import Messages
+
+
+def serializer(queryset, count, offset):
+    def mapping(item):
+        return {
+            'id': item.id,
+            'text': item.text,
+            'created': int(item.datetime.timestamp()),
+            'room': {
+                'id': item.room.id
+            },
+            'user': {
+                'id': item.user.id
+            }
+        }
+
+    items = map(mapping, queryset[offset:offset+count])
+    return list(items)
+
+
+class Route(View):
+    def data(self):
+        count = int(self.request.GET.get('count') or '50')
+        offset = int(self.request.GET.get('offset') or '0')
+        if not self.request.META.get('HTTP_AUTHORIZATION'):
+            raise Exception('Authorization token is missing')
+        user = UserProfile.objects.decode_token(
+            self.request.META['HTTP_AUTHORIZATION']
+        )
+        room = user.room
+        return serializer(
+            Messages.objects.filter(room=room).order_by('-id'),
+            count,
+            offset
+        )