Login with a token validation

1 files changed, 34 insertions, 0 deletions

diff --git a/src/server/Model/SignIn.hs b/src/server/Model/SignIn.hs
new file mode 100644
index 0000000..c447416
--- /dev/null
+++ b/src/server/Model/SignIn.hs
@@ -0,0 +1,34 @@
+module Model.SignIn
+  ( createSignInToken
+  , getSignInToken
+  , signInTokenIsUsed
+  ) where
+
+import Data.Text (Text)
+import Data.Time.Clock (getCurrentTime)
+
+import Control.Monad.IO.Class (liftIO)
+
+import Database.Persist
+
+import Model.Database
+import Model.UUID (generateUUID)
+
+createSignInToken :: Text -> Persist Text
+createSignInToken email = do
+  now <- liftIO getCurrentTime
+  token <- liftIO generateUUID
+  _ <- insert $ SignIn token now email False
+  return token
+
+getSignInToken :: Text -> Persist (Maybe (Entity SignIn))
+getSignInToken token =
+  selectFirst
+    [ SignInToken ==. token
+    , SignInIsUsed ==. False
+    ]
+    []
+
+signInTokenIsUsed :: SignInId -> Persist ()
+signInTokenIsUsed tokenId =
+  update tokenId [SignInIsUsed =. True]