diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9507ebe..14db197 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 - bugfix: учитывание редактируемого сообщения обратной связи
 - удаление приветствия для покинувших канал без ответа
 - обработка ответов на сообщения в чате отзывов
+- рефакторинг
 
 [0.0.2]
 
diff --git a/api/index.py b/api/index.py
deleted file mode 100644
index 34f264f..0000000
--- a/api/index.py
+++ /dev/null
@@ -1,178 +0,0 @@
-import os
-
-from tgbot.rest import delete_message, register_webhook, send_message, ban_member, forward_message
-from sanic import Sanic
-from sanic.response import json, text
-import redis
-import json as codec
-
-app = Sanic()
-
-REDIS_URL = os.environ.get('REDIS_URL') or 'redis://localhost:6379'
-storage = redis.from_url(REDIS_URL)  # сохраняет сессии и пересылаемые сообщения между перезагрузками
-
-WEBHOOK = os.environ.get('VERCEL_URL')
-CHAT_ID = os.environ.get('CHAT_ID').replace("-", "-100")
-WELCOME_MSG = os.environ.get('WELCOME_MSG') or 'Welcome! Press the button'
-
-BUTTON_OK = os.environ.get('BUTTON_OK') or 'Ok'
-BUTTON_OK2 = os.environ.get('BUTTON_OK2') or 'I see'
-BUTTON_NO = os.environ.get('BUTTON_NO') or 'No'
-
-FEEDBACK_CHAT_ID = os.environ.get('FEEDBACK_CHAT_ID').replace("-", "-100")
-
-app.config.REGISTERED = False
-
-
-@app.route('/', methods=["GET"])
-async def register(req):
-    if not app.config.REGISTERED:
-        r = register_webhook(WEBHOOK)
-        print(f'\n\t\t\tWEBHOOK REGISTERED:\n{r.json()}')
-        app.config.REGISTERED = True
-        return json(r.json())
-    return text('skipped')
-
-
-@app.post('/')
-async def handle(req):
-    print(req)
-    try:
-        update = req.json
-        if 'message' in update:
-            print(update)
-            msg = update.get('message', update.get('edited_message'))
-            if msg['chat']['type'] == 'private':
-                mid = msg['message_id']
-                cid = msg['chat']['id']
-                r = forward_message(cid, mid, FEEDBACK_CHAT_ID)
-                print(r.json())
-                storage.set(f'fbk-{cid}-{mid}', r['id'])
-            elif str(msg['chat']['id']) == FEEDBACK_CHAT_ID:
-                print(f'handle answer from support')
-                private_chat_id = str(msg['reply_to_message']['from']['id'])
-                replied_msg_id = str(msg['reply_to_message']['message_id'])
-                r = send_message(private_chat_id, msg['body'], reply_to=replied_msg_id)
-                print(r.json())
-            elif str(msg['chat']['id']) == CHAT_ID:
-                print(f'message in chat')
-                if 'new_chat_member' in msg:
-                    chat_id = str(msg['chat']['id'])
-                    from_id = str(msg['from']['id'])
-                    member_id = str(msg['new_chat_member']['id'])
-                    s = {}
-                    if from_id == member_id:
-                        print(f'new self-joined member {member_id}')
-                        reply_markup = {
-                            "inline_keyboard": [
-                                [
-                                    {"text": BUTTON_NO, "callback_data": BUTTON_NO},
-                                    {"text": BUTTON_OK, "callback_data": BUTTON_OK}
-                                ]
-                            ]
-                        }
-                        r = send_message(
-                            chat_id,
-                            WELCOME_MSG,    
-                            reply_to=msg['message_id'],
-                            reply_markup=reply_markup
-                        )
-                        welcome_msg_id = r.json()['result']['message_id']
-                        print(f'welcome message id: {welcome_msg_id}')
-                        s["newcomer"] = True
-                        s["welcome_id"] = welcome_msg_id
-                    else:
-                        s['newcomer'] = False
-
-                    # create new member session
-                    storage.set(f'usr-{member_id}', codec.dumps(s))
-
-                elif 'left_chat_member' in msg:
-                    member_id = msg["left_chat_member"]["id"]
-
-                    # read member session
-                    s = storage.get(f'usr-{member_id}')
-                    if s:
-                        s = codec.parse(s)
-                        r = delete_message(CHAT_ID, s['welcome_id'])
-                        print(r.json())
-
-                        # remove left member session
-                        storage.delete(f'usr-{member_id}')
-
-                elif 'text' in msg:
-                    chat_id = str(msg['chat']['id'])
-                    member_id = str(msg['from']['id'])
-
-                    # check if author is self-joined newcomer
-                    author = storage.get(f'usr-{member_id}')
-
-                    if author:
-                        author = codec.parse(author)
-                        if author.get("newcomer"):
-                            print(f'new member speaks {msg["text"]}')
-                            answer = msg['text']
-                            if BUTTON_OK.lower() in answer.lower() or \
-                                BUTTON_OK2.lower() in answer.lower():
-                                print('found answer, cleanup')
-                                r = delete_message(CHAT_ID, author["welcome_id"])
-                                print(r.json())
-                                author["newcomer"] = False
-
-                                # set author as not a newcomer
-                                storage.set(f'usr-{member_id}', codec.dumps(author))
-
-                            else:
-                                print('remove some message')
-                                r = delete_message(CHAT_ID, msg['message_id'])
-                                print(r.json())
-                        else:
-                            print(f'old member speaks {msg["text"]}')
-        if 'callback_query' in update:
-            callback_query = update['callback_query']
-            chat_id = str(callback_query['message']['chat']['id'])
-            if chat_id == CHAT_ID:
-                member_id = str(callback_query['from']['id'])
-                callback_data = callback_query['data']
-                reply_owner = str(callback_query['message']['reply_to_message']['from']['id'])
-                welcome_msg_id = str(callback_data['message']['message_id'])
-                enter_msg_id = str(callback_data['message']['reply_to_message']['message_id'])
-                if reply_owner == member_id:
-                    print(update)
-                    print(f'callback_query in {CHAT_ID}')
-                    
-                    # read session
-                    s = storage.get(f'usr-{member_id}')
-                    if s:
-                        s = codec.parse(s)
-                    else:
-                        print('no user session found, create')
-                        storage.set(f'usr-{member_id}', codec.dumps({
-                            'newcomer': True,
-                            'welcome_id': welcome_msg_id
-                        }))
-                    
-                    if callback_data == BUTTON_NO:
-                        print('wrong answer, cleanup')
-                        r = delete_message(CHAT_ID, enter_msg_id)
-                        print(r.json())
-                        r = delete_message(CHAT_ID, welcome_msg_id)
-                        print(r.json())
-
-                        # remove banned member session
-                        storage.delete(f'usr-{member_id}')
-
-                        print('ban member')
-                        r = ban_member(CHAT_ID, member_id)
-                        print(r.json())
-                    elif callback_data == BUTTON_OK:
-                        print('proper answer, cleanup')
-                        r = delete_message(CHAT_ID, welcome_msg_id)
-                        print(r.json())
-                        s['newcomer'] = False
-
-                        # store new member session
-                        storage.set(f'usr-{member_id}', codec.dumps(s))
-    except Exception:
-        pass
-    return text('ok')
diff --git a/api/webhook.py b/api/webhook.py
new file mode 100644
index 0000000..bead17d
--- /dev/null
+++ b/api/webhook.py
@@ -0,0 +1,50 @@
+from tgbot.config import WEBHOOK, FEEDBACK_CHAT_ID, CHAT_ID # init storage there
+from tgbot.handlers import handle_feedback, handle_answer, handle_welcome, \
+    handle_left, handle_text, handle_button
+from tgbot.api import register_webhook
+from sanic import Sanic
+from sanic.response import text
+
+
+app = Sanic()
+app.config.REGISTERED = False
+
+
+@app.route('/', methods=["GET"])
+async def register(req):
+    if not app.config.REGISTERED:
+        r = register_webhook(WEBHOOK)
+        print(f'\n\t\t\tWEBHOOK REGISTERED:\n{r.json()}')
+        app.config.REGISTERED = True
+        print(r.json())
+    return text('skipped')
+
+
+@app.post('/')
+async def handle(req):
+    print(req)
+    try:
+        update = req.json
+        print(update)
+        if 'message' in update:
+            msg = update.get('message', update.get('edited_message'))
+            if msg['chat']['type'] == 'private':
+                handle_feedback(msg)
+            elif str(msg['chat']['id']) == FEEDBACK_CHAT_ID:
+                handle_answer(msg)
+            elif str(msg['chat']['id']) == CHAT_ID:
+                if 'new_chat_member' in msg:
+                    handle_welcome(msg)
+                elif 'left_chat_member' in msg:
+                    handle_left(msg)
+                elif 'text' in msg:
+                    handle_text(msg)
+        if 'callback_query' in update:
+            callback_query = update['callback_query']
+            chat_id = str(callback_query['message']['chat']['id'])
+            if chat_id == CHAT_ID:
+                handle_button(callback_query)
+    except Exception:
+        import traceback
+        traceback.print_exc()
+    return text('ok')
diff --git a/tgbot/rest.py b/tgbot/api.py
similarity index 94%
rename from tgbot/rest.py
rename to tgbot/api.py
index 93fecf8..4324996 100644
--- a/tgbot/rest.py
+++ b/tgbot/api.py
@@ -19,7 +19,7 @@ def delete_message(cid: str, mid: str):
     return r
 
 
-def send_message(cid, body, reply_to=None, reply_markup=None):
+def send_message(cid: str, body, reply_to=None, reply_markup=None):
     url = apiBase + f"sendMessage?chat_id={cid}&text={body}"
     if reply_to:
         url += f'&reply_to_message_id={reply_to}'
@@ -28,6 +28,7 @@ def send_message(cid, body, reply_to=None, reply_markup=None):
         reply_markup = requests.utils.quote(reply_markup)
         url += f'&reply_markup={reply_markup}'
     r = requests.post(url)
+    print(f'{url}')
     return r
 
 
diff --git a/tgbot/config.py b/tgbot/config.py
new file mode 100644
index 0000000..2f7266d
--- /dev/null
+++ b/tgbot/config.py
@@ -0,0 +1,12 @@
+import os
+
+
+REDIS_URL = os.environ.get('REDIS_URL') or 'redis://localhost:6379'
+WEBHOOK = os.environ.get('VERCEL_URL') or 'http://localhost:8000'
+WELCOME_MSG = os.environ.get('WELCOME_MSG') or 'Welcome! Press the button'
+BUTTON_OK = os.environ.get('BUTTON_OK') or 'Ok'
+BUTTON_OK2 = os.environ.get('BUTTON_OK2') or 'I see'
+BUTTON_NO = os.environ.get('BUTTON_NO') or 'No'
+
+CHAT_ID = os.environ.get('CHAT_ID').replace("-", "-100")
+FEEDBACK_CHAT_ID = os.environ.get('FEEDBACK_CHAT_ID').replace("-", "-100")
\ No newline at end of file
diff --git a/tgbot/handlers.py b/tgbot/handlers.py
new file mode 100644
index 0000000..64d5456
--- /dev/null
+++ b/tgbot/handlers.py
@@ -0,0 +1,150 @@
+from tgbot.api import send_message, forward_message, delete_message, ban_member
+from tgbot.config import FEEDBACK_CHAT_ID, WELCOME_MSG, BUTTON_NO, \
+    BUTTON_OK, CHAT_ID, BUTTON_OK2, REDIS_URL
+import json
+import redis
+
+# сохраняет сессии и пересылаемые сообщения между перезагрузками
+storage = redis.from_url(REDIS_URL)
+
+
+def handle_feedback(msg):
+    mid = msg['message_id']
+    cid = msg['chat']['id']
+    r = forward_message(cid, mid, FEEDBACK_CHAT_ID).json()
+    support_msg_id = r['result']['message_id']
+    # store private chat message id 
+    # fbk-<support-chat-message-id> -> <private-chat-id>:<private-message-id>
+    storage.set(f'fbk-{support_msg_id}', json.dumps({
+        "message_id": mid,
+        "chat_id": cid
+    }))
+
+
+def handle_answer(msg):
+    print(f'handle answer from support')
+    support_msg_id = str(msg['reply_to_message']['message_id'])
+    # get stored private chat id
+    stored_feedback = storage.get(f'fbk-{support_msg_id}')
+    stored_feedback = json.loads(stored_feedback)
+    r = send_message(f'{stored_feedback["chat_id"]}', msg['text'], reply_to=stored_feedback["message_id"])  # notice 'u' before private chat ID
+    print(r.json())
+
+
+def handle_welcome(msg):
+    chat_id = str(msg['chat']['id'])
+    from_id = str(msg['from']['id'])
+    member_id = str(msg['new_chat_member']['id'])
+    s = {}
+    if from_id == member_id:
+        print(f'new self-joined member {member_id}')
+        reply_markup = {
+            "inline_keyboard": [
+                [
+                    {"text": BUTTON_NO, "callback_data": BUTTON_NO},
+                    {"text": BUTTON_OK, "callback_data": BUTTON_OK}
+                ]
+            ]
+        }
+        r = send_message(
+            chat_id,
+            WELCOME_MSG,    
+            reply_to=msg['message_id'],
+            reply_markup=reply_markup
+        )
+        welcome_msg_id = r.json()['result']['message_id']
+        print(f'welcome message id: {welcome_msg_id}')
+        s["newcomer"] = True
+        s["welcome_id"] = welcome_msg_id
+    else:
+        s['newcomer'] = False
+
+    # create new member session
+    storage.set(f'usr-{member_id}', json.dumps(s))
+
+
+def handle_left(msg):
+    member_id = msg["left_chat_member"]["id"]
+
+    # read member session
+    s = storage.get(f'usr-{member_id}')
+    if s:
+        s = json.loads(s)
+        r = delete_message(CHAT_ID, s['welcome_id'])
+        print(r.json())
+
+        # remove left member session
+        storage.delete(f'usr-{member_id}')
+
+
+def handle_text(msg):
+    member_id = str(msg['from']['id'])
+
+    # check if author is self-joined newcomer
+    author = storage.get(f'usr-{member_id}')
+
+    if author:
+        author = json.loads(author)
+        if author.get("newcomer"):
+            print(f'new member speaks {msg["text"]}')
+            answer = msg['text']
+            if BUTTON_OK.lower() in answer.lower() or \
+                BUTTON_OK2.lower() in answer.lower():
+                print('found answer, cleanup')
+                r = delete_message(CHAT_ID, author["welcome_id"])
+                print(r.json())
+                author["newcomer"] = False
+
+                # set author as not a newcomer
+                storage.set(f'usr-{member_id}', json.dumps(author))
+
+            else:
+                print('remove some message')
+                r = delete_message(CHAT_ID, msg['message_id'])
+                print(r.json())
+        else:
+            print(f'old member speaks {msg["text"]}')
+
+
+def handle_button(callback_query):
+    member_id = str(callback_query['from']['id'])
+    callback_data = callback_query['data']
+    reply_owner = str(callback_query['message']['reply_to_message']['from']['id'])
+    welcome_msg_id = str(callback_query['message']['message_id'])
+    enter_msg_id = str(callback_query['message']['reply_to_message']['message_id'])
+    if reply_owner == member_id:
+        print(f'callback_query in {CHAT_ID}')
+        
+        # read session
+        s = storage.get(f'usr-{member_id}')
+        if s:
+            s = json.loads(s)
+        else:
+            print('no user session found, create')
+            s = {
+                'newcomer': True,
+                'welcome_id': welcome_msg_id
+            }
+            storage.set(f'usr-{member_id}', json.dumps(s))
+        
+        if callback_data == BUTTON_NO:
+            print('wrong answer, cleanup')
+            r = delete_message(CHAT_ID, enter_msg_id)
+            print(r.json())
+            r = delete_message(CHAT_ID, welcome_msg_id)
+            print(r.json())
+
+            # remove banned member session
+            storage.delete(f'usr-{member_id}')
+
+            print('ban member')
+            r = ban_member(CHAT_ID, member_id)
+            print(r.json())
+        elif callback_data == BUTTON_OK:
+            print('proper answer, cleanup')
+            r = delete_message(CHAT_ID, welcome_msg_id)
+            print(r.json())
+            s['newcomer'] = False
+
+            # store new member session
+            storage.set(f'usr-{member_id}', json.dumps(s))
\ No newline at end of file
diff --git a/vercel.json b/vercel.json
index 53188ca..e2e757a 100755
--- a/vercel.json
+++ b/vercel.json
@@ -1,7 +1,7 @@
 {
   "version": 2,
   "functions": {
-    "api/index.py": {
+    "api/webhook.py": {
       "memory": 1024,
       "maxDuration": 10
     }
@@ -9,7 +9,7 @@
   "routes": [
     {
       "src": "/",
-      "dest": "/api/index.py"
+      "dest": "/api/webhook.py"
     }
   ]
 }