feat: add migrator button and action

pages/sgho.page.tsx

@@ -37,6 +37,11 @@ const SGhoVaultWithdrawModal = dynamic(() =>
     (module) => module.SGhoVaultWithdrawModal
   )
 );
+const StkGhoMigrateModal = dynamic(() =>
+  import('../src/components/transactions/StkGhoMigrate/StkGhoMigrateModal').then(
+    (module) => module.StkGhoMigrateModal
+  )
+);
 
 export default function SavingsGho() {
   const [trackEvent, currentMarket, setCurrentMarket] = useRootStore(
@@ -91,6 +96,7 @@ SavingsGho.getLayout = function getLayout(page: React.ReactElement) {
       <StakeRewardClaimModal />
       <SGhoVaultDepositModal />
       <SGhoVaultWithdrawModal />
+      <StkGhoMigrateModal />
       {/** End of modals */}
     </MainLayout>
   );

src/components/transactions/StkGhoMigrate/StkGhoMigrateActions.tsx

@@ -0,0 +1,128 @@
+import { evmAddress, useStkGhoMigrate } from '@aave/react';
+import { useSendTransaction } from '@aave/react/viem';
+import { Trans } from '@lingui/macro';
+import { BoxProps } from '@mui/material';
+import { useQueryClient } from '@tanstack/react-query';
+import { errAsync } from 'neverthrow';
+import React, { useEffect } from 'react';
+import { oracles, stakedTokens } from 'src/hooks/stake/common';
+import { useModalContext } from 'src/hooks/useModal';
+import { useSavingsMarketData } from 'src/hooks/useSavingsMarketData';
+import { useWeb3Context } from 'src/libs/hooks/useWeb3Context';
+import { useSGhoVaultContext } from 'src/modules/sGho/SGhoVaultContext';
+import { useRootStore } from 'src/store/root';
+import { queryKeysFactory } from 'src/ui-config/queries';
+import { wagmiConfig } from 'src/ui-config/wagmiConfig';
+import { useWalletClient } from 'wagmi';
+import { waitForTransactionReceipt } from 'wagmi/actions';
+import { useShallow } from 'zustand/shallow';
+
+import { TxActionsWrapper } from '../TxActionsWrapper';
+
+// Static recommendation: migrate redeems the full stkGHO position and deposits
+// it into the sGHO vault. No approval step exists (the migrator holds the
+// stkGHO claim-helper role and redeems on the user's behalf), so this is a safe
+// upper bound for the single migrate() call.
+const STK_GHO_MIGRATE_GAS_LIMIT = 250_000;
+
+export interface StkGhoMigrateActionsProps extends BoxProps {
+  isWrongNetwork: boolean;
+  blocked: boolean;
+}
+
+export const StkGhoMigrateActions = React.memo(
+  ({ isWrongNetwork, blocked, sx, ...props }: StkGhoMigrateActionsProps) => {
+    const { currentAccount } = useWeb3Context();
+    const { chainId: targetChainId, sdkChainId } = useSavingsMarketData();
+    const { mainTxState, setMainTxState, setTxError, setGasLimit } = useModalContext();
+    const { refresh } = useSGhoVaultContext();
+    const queryClient = useQueryClient();
+    const [user, marketData] = useRootStore(
+      useShallow((state) => [state.account, state.currentMarketData])
+    );
+
+    const { data: walletClient } = useWalletClient();
+    const [migrate] = useStkGhoMigrate();
+    const [sendTransaction] = useSendTransaction(walletClient);
+
+    useEffect(() => {
+      setGasLimit(STK_GHO_MIGRATE_GAS_LIMIT.toString());
+    }, [setGasLimit]);
+
+    const action = async () => {
+      if (!currentAccount || !walletClient) return;
+      setMainTxState({ loading: true });
+      setTxError(undefined);
+
+      const result = await migrate({
+        user: evmAddress(currentAccount),
+        chainId: sdkChainId,
+      }).andThen((plan) => {
+        // The migrator holds the stkGHO claim-helper role and redeems on the
+        // user's behalf, so migration never requires an approval — the backend
+        // always returns a plain TransactionRequest. Guard the other
+        // ExecutionPlan union members defensively.
+        if (plan.__typename !== 'TransactionRequest') {
+          return errAsync(new Error('Unexpected migration plan; expected a transaction request.'));
+        }
+        return sendTransaction(plan);
+      });
+
+      if (result.isErr()) {
+        setMainTxState({ loading: false });
+        setTxError({
+          blocking: true,
+          actionBlocked: true,
+          rawError: result.error as Error,
+          error: <span>{(result.error as Error).message}</span>,
+          // eslint-disable-next-line @typescript-eslint/no-explicit-any
+          txAction: 0 as any,
+        });
+        return;
+      }
+
+      const submittedTxHash = result.value;
+      setMainTxState({ loading: true, txHash: submittedTxHash });
+
+      // Wait for the receipt on the connected chain (works on forks too).
+      try {
+        await waitForTransactionReceipt(wagmiConfig, {
+          hash: submittedTxHash as `0x${string}`,
+          chainId: targetChainId,
+        });
+      } catch (e) {
+        console.warn('waitForTransactionReceipt failed', e);
+      }
+
+      // Refresh the sGHO vault cache (new shares) and invalidate the stkGHO
+      // position + pool balances so both panels reflect the migration.
+      refresh();
+      await new Promise((resolve) => setTimeout(resolve, 1000));
+
+      queryClient.invalidateQueries({ queryKey: queryKeysFactory.pool });
+      queryClient.invalidateQueries({
+        queryKey: queryKeysFactory.userStakeUiData(user, marketData, stakedTokens, oracles),
+      });
+
+      setMainTxState({ loading: false, success: true, txHash: submittedTxHash });
+    };
+
+    return (
+      <TxActionsWrapper
+        requiresApproval={false}
+        preparingTransactions={false}
+        mainTxState={mainTxState}
+        isWrongNetwork={isWrongNetwork}
+        handleAction={action}
+        symbol="stkGHO"
+        actionText={<Trans>Proceed with migration</Trans>}
+        actionInProgressText={<Trans>Migrating</Trans>}
+        sx={sx}
+        blocked={blocked}
+        {...props}
+      />
+    );
+  }
+);
+
+StkGhoMigrateActions.displayName = 'StkGhoMigrateActions';

src/components/transactions/StkGhoMigrate/StkGhoMigrateModal.tsx

@@ -0,0 +1,24 @@
+import { Trans } from '@lingui/macro';
+import { BasicModal } from 'src/components/primitives/BasicModal';
+import { ModalContextType, ModalType, useModalContext } from 'src/hooks/useModal';
+
+import { ModalWrapper } from '../FlowCommons/ModalWrapper';
+import { StkGhoMigrateModalContent } from './StkGhoMigrateModalContent';
+
+export const StkGhoMigrateModal = () => {
+  const { type, close, args } = useModalContext() as ModalContextType<{
+    underlyingAsset: string;
+  }>;
+
+  return (
+    <BasicModal open={type === ModalType.StkGhoMigrate} setOpen={close}>
+      <ModalWrapper
+        title={<Trans>Migrate stkGHO to sGHO</Trans>}
+        underlyingAsset={args.underlyingAsset}
+        hideTitleSymbol
+      >
+        {() => <StkGhoMigrateModalContent />}
+      </ModalWrapper>
+    </BasicModal>
+  );
+};

src/components/transactions/StkGhoMigrate/StkGhoMigrateModalContent.tsx

@@ -0,0 +1,98 @@
+import { Stake } from '@aave/contract-helpers';
+import { bigDecimal, useSghoVaultPreviewDeposit } from '@aave/react';
+import { Trans } from '@lingui/macro';
+import { formatEther } from 'ethers/lib/utils';
+import { useRef } from 'react';
+import { useUserStakeUiData } from 'src/hooks/stake/useUserStakeUiData';
+import { useModalContext } from 'src/hooks/useModal';
+import { useSavingsMarketData } from 'src/hooks/useSavingsMarketData';
+import { useSGhoVaultContext } from 'src/modules/sGho/SGhoVaultContext';
+import { useRootStore } from 'src/store/root';
+
+import { useWeb3Context } from '../../../libs/hooks/useWeb3Context';
+import { TxErrorView } from '../FlowCommons/Error';
+import { TxSuccessView } from '../FlowCommons/Success';
+import { DetailsNumberLineWithSub, TxModalDetails } from '../FlowCommons/TxModalDetails';
+import { StkGhoMigrateActions } from './StkGhoMigrateActions';
+
+export const StkGhoMigrateModalContent = () => {
+  const { chainId: connectedChainId } = useWeb3Context();
+  const { chainId: targetChainId, sdkChainId } = useSavingsMarketData();
+  const { mainTxState, txError, gasLimit } = useModalContext();
+
+  const currentMarketData = useRootStore((store) => store.currentMarketData);
+  const { data: stakeUserResult } = useUserStakeUiData(currentMarketData, Stake.gho);
+
+  // stkGHO is redeemable 1:1 to GHO, so the migrated GHO amount equals the
+  // user's full stkGHO position. We use it to preview the sGHO shares minted.
+  const stkGhoBalance = formatEther(stakeUserResult?.[0]?.stakeTokenRedeemableAmount || '0');
+
+  const previewAmount = +stkGhoBalance > 0 ? stkGhoBalance : '0';
+  const { data: previewShares, loading: previewFetching } = useSghoVaultPreviewDeposit({
+    amount: bigDecimal(previewAmount),
+    chainId: sdkChainId,
+  });
+
+  // USD pricing from the sGHO vault. stkGHO is 1:1 to GHO, so it's priced at the
+  // GHO rate (`usdPerToken`). sGHO shares appreciate (not 1:1 to GHO), so they're
+  // priced at the vault share price = totalAssetsUSD / totalSupply.
+  const { vault } = useSGhoVaultContext();
+  const ghoUsdPerToken = +(vault?.totalAssets?.usdPerToken ?? '1');
+  const totalAssetsUsd = +(vault?.totalAssets?.usd ?? '0');
+  const totalSupply = +(vault?.totalSupply?.value ?? '0');
+  const sghoUsdPerShare =
+    totalSupply > 0 && totalAssetsUsd > 0 ? totalAssetsUsd / totalSupply : ghoUsdPerToken;
+
+  const stkGhoUSD = (+stkGhoBalance * ghoUsdPerToken).toString();
+  const sghoUSD = (+(previewShares?.value ?? '0') * sghoUsdPerShare).toString();
+
+  const isWrongNetwork = connectedChainId !== targetChainId;
+
+  // Snapshot the received shares at submit time — once the tx mines the Actions
+  // invalidate the stake data, so `stkGhoBalance` (and thus `previewShares`)
+  // refetches to 0 and would otherwise blank the success view.
+  const receivedSharesRef = useRef<string | null>(null);
+  if (mainTxState.txHash && receivedSharesRef.current === null) {
+    receivedSharesRef.current = previewShares?.value ?? '0';
+  }
+  if (!mainTxState.txHash && !mainTxState.success && receivedSharesRef.current !== null) {
+    receivedSharesRef.current = null;
+  }
+
+  if (txError && txError.blocking) return <TxErrorView txError={txError} />;
+  if (mainTxState.success) {
+    return (
+      <TxSuccessView
+        action={<Trans>received</Trans>}
+        amount={receivedSharesRef.current ?? previewShares?.value ?? '0'}
+        symbol="sGHO"
+      />
+    );
+  }
+
+  return (
+    <>
+      <TxModalDetails gasLimit={gasLimit} chainId={targetChainId}>
+        <DetailsNumberLineWithSub
+          description={<Trans>Migrating</Trans>}
+          futureValue={stkGhoBalance}
+          futureValueUSD={stkGhoUSD}
+          symbol="stkGHO"
+        />
+        <DetailsNumberLineWithSub
+          description={<Trans>You&apos;ll receive</Trans>}
+          futureValue={previewShares?.value ?? '0'}
+          futureValueUSD={sghoUSD}
+          symbol="sGHO"
+          loading={previewFetching}
+        />
+      </TxModalDetails>
+
+      <StkGhoMigrateActions
+        isWrongNetwork={isWrongNetwork}
+        blocked={+stkGhoBalance <= 0}
+        sx={{ mt: '48px' }}
+      />
+    </>
+  );
+};

src/hooks/compliance/service-compliance.ts

@@ -11,7 +11,9 @@ export type ComplianceCheckResponse = {
 
 export const checkCompliance = async (address: string): Promise<ComplianceCheckResponse> => {
   try {
-    const res = await fetch(`/api/preflight-compliance?address=${encodeURIComponent(address)}`);
+    // NOTE: trailing slash is required because next.config.js sets `trailingSlash: true`.
+    // Without it Next issues a 308 redirect that loops -> ERR_TOO_MANY_REDIRECTS.
+    const res = await fetch(`/api/preflight-compliance/?address=${encodeURIComponent(address)}`);
     const data = await res.json();
 
     if (res.ok) {

src/hooks/useModal.tsx

@@ -39,6 +39,7 @@ export enum ModalType {
   SavingsGhoWithdraw,
   SGhoVaultDeposit,
   SGhoVaultWithdraw,
+  StkGhoMigrate,
   CancelCowOrder,
 
   // Swaps
@@ -151,6 +152,7 @@ export interface ModalContextType<T extends ModalArgsType> {
   openSavingsGhoWithdraw: () => void;
   openSGhoVaultDeposit: () => void;
   openSGhoVaultWithdraw: () => void;
+  openStkGhoMigrate: () => void;
   openCancelCowOrder: (
     transaction: TransactionHistoryItem<SwapActionFields[ActionName.Swap]>
   ) => void;
@@ -439,6 +441,11 @@ export const ModalContextProvider: React.FC<PropsWithChildren> = ({ children })
           setType(ModalType.SGhoVaultWithdraw);
           setArgs({ underlyingAsset: AaveV3Ethereum.ASSETS.GHO.UNDERLYING.toLowerCase() });
         },
+        openStkGhoMigrate: () => {
+          trackEvent(GENERAL.OPEN_MODAL, { modal: 'stkGHO to sGHO Migration' });
+          setType(ModalType.StkGhoMigrate);
+          setArgs({ underlyingAsset: AaveV3Ethereum.ASSETS.GHO.UNDERLYING.toLowerCase() });
+        },
         openCancelCowOrder: (transaction) => {
           trackEvent(GENERAL.OPEN_MODAL, {
             modal: 'Cancel CoW Order',

src/locales/en/messages.po

@@ -2020,6 +2020,10 @@ msgstr "Can't validate the wallet address. Try again."
 msgid "GHO balance"
 msgstr "GHO balance"
 
+#: src/components/transactions/StkGhoMigrate/StkGhoMigrateModalContent.tsx
+msgid "received"
+msgstr "received"
+
 #: pages/dashboard.page.tsx
 #: src/components/transactions/Borrow/BorrowModal.tsx
 #: src/modules/dashboard/lists/BorrowAssetsList/BorrowAssetsListItem.tsx
@@ -2363,6 +2367,7 @@ msgstr "VIEW"
 
 #: src/components/transactions/SGhoVault/SGhoVaultDepositModalContent.tsx
 #: src/components/transactions/SGhoVault/SGhoVaultWithdrawModalContent.tsx
+#: src/components/transactions/StkGhoMigrate/StkGhoMigrateModalContent.tsx
 msgid "You'll receive"
 msgstr "You'll receive"
 
@@ -3220,6 +3225,10 @@ msgstr "To repay on behalf of a user an explicit amount to repay is needed"
 msgid "Repayment amount to reach {0}% utilization"
 msgstr "Repayment amount to reach {0}% utilization"
 
+#: src/components/transactions/StkGhoMigrate/StkGhoMigrateActions.tsx
+msgid "Proceed with migration"
+msgstr "Proceed with migration"
+
 #: src/modules/umbrella/UmbrellaModalContent.tsx
 msgid "You can not stake this amount because it will cause collateral call"
 msgstr "You can not stake this amount because it will cause collateral call"
@@ -3427,6 +3436,10 @@ msgstr "GHO yield with instant withdraws."
 msgid "Both"
 msgstr "Both"
 
+#: src/components/transactions/StkGhoMigrate/StkGhoMigrateModal.tsx
+msgid "Migrate stkGHO to sGHO"
+msgstr "Migrate stkGHO to sGHO"
+
 #: src/components/SecondsToString.tsx
 msgid "{h}h"
 msgstr "{h}h"
@@ -3938,6 +3951,8 @@ msgstr "Tip: Try improving your order parameters"
 
 #: src/components/transactions/MigrateV3/MigrateV3Actions.tsx
 #: src/components/transactions/StakingMigrate/StakingMigrateActions.tsx
+#: src/components/transactions/StkGhoMigrate/StkGhoMigrateActions.tsx
+#: src/components/transactions/StkGhoMigrate/StkGhoMigrateModalContent.tsx
 msgid "Migrating"
 msgstr "Migrating"
 
@@ -4185,6 +4200,7 @@ msgstr "Flashloan is disabled for this asset, hence this position cannot be migr
 #: src/components/transactions/StakingMigrate/StakingMigrateActions.tsx
 #: src/modules/markets/Gho/GhoBanner.tsx
 #: src/modules/markets/Gho/GhoBanner.tsx
+#: src/modules/stkGho/StkGhoDepositRow.tsx
 msgid "Migrate"
 msgstr "Migrate"