1 files changed, 16 insertions, 1 deletions
diff --git a/src/server/Model/SignIn.hs b/src/server/Model/SignIn.hs
index b475fdb..117b8b5 100644
--- a/src/server/Model/SignIn.hs
+++ b/src/server/Model/SignIn.hs
@@ -1,6 +1,8 @@
 module Model.SignIn
   ( createSignInToken
   , getSignInToken
+  , signInTokenToUsed
+  , isLastValidToken
   ) where
 
 import Data.Text (Text)
@@ -17,9 +19,22 @@ createSignInToken :: Text -> Persist Text
 createSignInToken email = do
   now <- liftIO getCurrentTime
   token <- liftIO generateUUID
-  _ <- insert $ SignIn token now email
+  _ <- insert $ SignIn token now email False
   return token
 
 getSignInToken :: Text -> Persist (Maybe (Entity SignIn))
 getSignInToken token =
   selectFirst [SignInToken ==. token] []
+
+signInTokenToUsed :: SignInId -> Persist ()
+signInTokenToUsed tokenId =
+  update tokenId [SignInIsUsed =. True]
+
+isLastValidToken :: SignIn -> Persist Bool
+isLastValidToken signIn = do
+  maybe False ((== (signInToken signIn)) . signInToken . entityVal) <$>
+    selectFirst
+      [ SignInEmail ==. (signInEmail signIn)
+      , SignInIsUsed ==. True
+      ]
+      [ Desc SignInCreation ]