Allow for charging customers

uncloud/uncloud_pay/stripe.py

@@ -21,7 +21,7 @@ def handle_stripe_error(f):
             'error': None
         }
 
-        common_message = "Currently it's not possible to make payments."
+        common_message = "Currently it is not possible to make payments."
         try:
             response_object = f(*args, **kwargs)
             response = {
@@ -114,11 +114,15 @@ def get_card(customer_id, card_id):
     return stripe.Customer.retrieve_source(customer_id, card_id)
 
 @handle_stripe_error
-def charge_customer(amount, source):
+def charge_customer(amount, customer_id, card_id):
+    # Amount is in CHF but stripes requires smallest possible unit.
+    # See https://stripe.com/docs/api/charges/create
+    adjusted_amount = int(amount * 100)
     return stripe.Charge.create(
-            amount=amount,
-            currenty=CURRENCY,
-            source=source)
+            amount=adjusted_amount,
+            currency=CURRENCY,
+            customer=customer_id,
+            source=card_id)
 
 @handle_stripe_error
 def create_customer(name, email):