From f9feeef3b988d952f41bcd08ed38e3877127b1fd Mon Sep 17 00:00:00 2001
From: Pawel Jakubas <pawel.jakubas@iohk.io>
Date: Thu, 7 Oct 2021 20:03:04 +0200
Subject: [PATCH] do not use collaterals and clean the code

hlint
---
 lib/core/src/Cardano/Wallet.hs            | 16 +++++++---------
 lib/core/src/Cardano/Wallet/Api/Server.hs |  4 ++--
 2 files changed, 9 insertions(+), 11 deletions(-)

diff --git a/lib/core/src/Cardano/Wallet.hs b/lib/core/src/Cardano/Wallet.hs
index 7afcfcd509a..9f7c2de3045 100644
--- a/lib/core/src/Cardano/Wallet.hs
+++ b/lib/core/src/Cardano/Wallet.hs
@@ -1668,16 +1668,15 @@ constructTxMeta
     -> WalletId
     -> TransactionCtx
     -> [(TxIn, Coin)]
-    -> [(TxIn, Coin)]
     -> [TxOut]
     -> ExceptT ErrSubmitPayment IO TxMeta
-constructTxMeta ctx wid txCtx colls inps outs = db & \DBLayer{..} -> do
+constructTxMeta ctx wid txCtx inps outs = db & \DBLayer{..} -> do
     mapExceptT atomically $ do
         cp <- withExceptT ErrSubmitPaymentNoSuchWallet
               $ withNoSuchWallet wid
               $ readCheckpoint wid
         liftIO $
-            mkTxMetaWithoutSel (currentTip cp) (getState cp) txCtx colls inps outs
+            mkTxMetaWithoutSel (currentTip cp) (getState cp) txCtx inps outs
   where
     db = ctx ^. dbLayer @IO @s @k
 
@@ -1687,22 +1686,21 @@ mkTxMetaWithoutSel
     -> s
     -> TransactionCtx
     -> [(TxIn, Coin)]
-    -> [(TxIn, Coin)]
     -> [TxOut]
     -> IO TxMeta
-mkTxMetaWithoutSel blockHeader wState txCtx colls inps outs =
+mkTxMetaWithoutSel blockHeader wState txCtx inps outs =
     let
-        amtOuts = sumCoins $ mapMaybe (flip ourCoin wState) outs
+        amtOuts = sumCoins $ mapMaybe (`ourCoin` wState) outs
 
         amtInps
-            = sumCoins (map snd colls ++ map snd inps ) -- here we need to remove overlapping txins between collateral and normal inputs
+            = sumCoins (map snd inps)
             & case txWithdrawal txCtx of
                 w@WithdrawalSelf{} -> addCoin (withdrawalToCoin w)
                 WithdrawalExternal{} -> Prelude.id
                 NoWithdrawal -> Prelude.id
     in return TxMeta
        { status = Pending
-       , direction = if amtInps > amtOuts then Outgoing else Incoming
+       , direction = Outgoing
        , slotNo = blockHeader ^. #slotNo
        , blockHeight = blockHeader ^. #blockHeight
        , amount = Coin.distance amtInps amtOuts
@@ -1737,7 +1735,7 @@ mkTxMeta ti' blockHeader wState txCtx sel =
         amtOuts = sumCoins $
             (txOutCoin <$> view #change sel)
             ++
-            mapMaybe (flip ourCoin wState) (view #outputs sel)
+            mapMaybe (`ourCoin` wState) (view #outputs sel)
 
         amtInps
             = sumCoins (txOutCoin . snd <$> view #inputs sel)
diff --git a/lib/core/src/Cardano/Wallet/Api/Server.hs b/lib/core/src/Cardano/Wallet/Api/Server.hs
index ad2e29fcd32..5475cc4084f 100644
--- a/lib/core/src/Cardano/Wallet/Api/Server.hs
+++ b/lib/core/src/Cardano/Wallet/Api/Server.hs
@@ -2369,7 +2369,7 @@ submitTransaction
     -> Handler ApiTxId
 submitTransaction ctx (ApiT wid) (ApiT sealedTx) = do
     ttl <- liftIO $ W.getTxExpiry ti Nothing
-    let (Tx txId _ colls inps outs wdrlMap _ _) = tx
+    let (Tx txId _ _ inps outs wdrlMap _ _) = tx
 
     _ <- withWorkerCtx ctx wid liftE liftE $ \wrk -> do
         (acct, _, _) <- liftHandler $ W.readRewardAccount @_ @s @k @n wrk wid
@@ -2381,7 +2381,7 @@ submitTransaction ctx (ApiT wid) (ApiT sealedTx) = do
                 { txTimeToLive = ttl
                 , txWithdrawal = wdrl
                 }
-        txMeta <- liftHandler $ W.constructTxMeta @_ @s @k wrk wid txCtx colls inps outs
+        txMeta <- liftHandler $ W.constructTxMeta @_ @s @k wrk wid txCtx inps outs
         liftHandler
             $ W.submitTx @_ @s @k wrk wid (tx, txMeta, sealedTx)
     return $ ApiTxId (ApiT txId)