diff --git a/rowers/braintreestuff.py b/rowers/braintreestuff.py
index 3bd84cd9..19cb6a86 100644
--- a/rowers/braintreestuff.py
+++ b/rowers/braintreestuff.py
@@ -1,9 +1,10 @@
-from rowers.models import Rower, PaidPlan, CoachingGroup
+from rowers.models import Rower, PaidPlan, CoachingGroup, iDokladToken
 from rowers.utils import ProcessorCustomerError
 from rowsandall_app.settings import (
     BRAINTREE_MERCHANT_ID, BRAINTREE_PUBLIC_KEY, BRAINTREE_PRIVATE_KEY,
     BRAINTREE_SANDBOX_MERCHANT_ID, BRAINTREE_SANDBOX_PUBLIC_KEY,
-    BRAINTREE_SANDBOX_PRIVATE_KEY, BRAINTREE_MERCHANT_ACCOUNT_ID
+    BRAINTREE_SANDBOX_PRIVATE_KEY, BRAINTREE_MERCHANT_ACCOUNT_ID,
+    IDOKLAD_CLIENT_ID, IDOKLAD_CLIENT_SECRET, IDOKLAD_REDIRECT_URI,
 )
 import pandas as pd
 from rowers.utils import dologging
@@ -52,6 +53,46 @@ else:
         )
     )
 
+def idoklad_token():
+    try:
+        token = iDokladToken.objects.get(id=1)
+    except iDokladToken.DoesNotExist:
+        return None
+
+    if token.updated_at + datetime.timedelta(seconds=token.expires_in) < timezone.now():
+        headers = {
+            'Content-Type': 'application/x-www-form-urlencoded',
+        }
+
+        data = {
+            'grant_type': 'refresh_token',
+            'client_id': IDOKLAD_CLIENT_ID,
+            'client_secret': IDOKLAD_CLIENT_SECRET,
+            'scope': 'eet offline_access',
+            'refresh_token': token.refresh_token,
+        }
+
+        response = requests.post('https://app.idoklad.cz/identity/server/connect/token', headers=headers, data=data)
+
+        if response.status_code == 200:
+            token = response.json()
+            token['updated_at'] = timezone.now()
+            iDokladToken.objects.filter(id=1).update(**token)
+        else:
+            return None
+        
+    return token
+
+def prepare_invoice():
+    token = idoklad_token()
+    if token is None:
+        return None
+
+    data = {
+        'templateId': 1,
+        }
+
+    
 
 def process_webhook(notification):
     if not settings.TESTING:  # pragma: no cover
diff --git a/rowers/models.py b/rowers/models.py
index 30cbfc78..0631182a 100644
--- a/rowers/models.py
+++ b/rowers/models.py
@@ -5374,5 +5374,5 @@ class iDokladToken(models.Model):
     expires_in = models.IntegerField()  # Store token expiry duration in seconds
     
     def __str__(self):
-        return f"iDoklad Token updated at {self.updated_at}"
+        return f"iDoklad Token updated at {self.updated_at}, expires at {self.updated_at+datetime.timedelta(seconds=self.expires_in)}"