1 files changed, 31 insertions, 0 deletions
diff --git a/common/src/Common/Validation/Payment.hs b/common/src/Common/Validation/Payment.hs
new file mode 100644
index 0000000..e3c447a
--- /dev/null
+++ b/common/src/Common/Validation/Payment.hs
@@ -0,0 +1,31 @@
+module Common.Validation.Payment
+  ( name
+  , cost
+  , date
+  , category
+  ) where
+
+import           Data.Text                (Text)
+import           Data.Time.Calendar       (Day)
+import           Data.Validation          (Validation)
+import qualified Data.Validation          as V
+
+import           Common.Model             (CategoryId)
+import qualified Common.Msg               as Msg
+import qualified Common.Validation.Atomic as Atomic
+
+name :: Text -> Validation Text Text
+name = Atomic.nonEmpty
+
+cost :: Text -> Validation Text Int
+cost input = V.bindValidation (Atomic.number input) Atomic.nonNullNumber
+
+date :: Text -> Validation Text Day
+date = Atomic.day
+
+category :: [CategoryId] -> CategoryId -> Validation Text CategoryId
+category cs c =
+  if elem c cs then
+    V.Success c
+  else
+    V.Failure $ Msg.get Msg.Form_InvalidCategory