From caa5507f689348d6ef3c7cd085fa42002f8ee81d Mon Sep 17 00:00:00 2001
From: Evan Gray <battledingo@gmail.com>
Date: Mon, 13 Sep 2021 15:23:41 -0400
Subject: [PATCH] bridge_ui: tokens on multiple chains warning

Change-Id: I80f08abff68ba918c3cedf76c2c08b2c32bebd4e
---
 bridge_ui/src/components/Transfer/Source.tsx  |  7 ++++-
 .../src/hooks/useTokenBlacklistWarning.ts     | 27 +++++++++++++++++++
 bridge_ui/src/utils/consts.ts                 | 26 ++++++++++++++++++
 3 files changed, 59 insertions(+), 1 deletion(-)
 create mode 100644 bridge_ui/src/hooks/useTokenBlacklistWarning.ts

diff --git a/bridge_ui/src/components/Transfer/Source.tsx b/bridge_ui/src/components/Transfer/Source.tsx
index 4c488f639..3d25f8540 100644
--- a/bridge_ui/src/components/Transfer/Source.tsx
+++ b/bridge_ui/src/components/Transfer/Source.tsx
@@ -3,6 +3,7 @@ import { Restore } from "@material-ui/icons";
 import { useCallback } from "react";
 import { useDispatch, useSelector } from "react-redux";
 import useIsWalletReady from "../../hooks/useIsWalletReady";
+import useTokenBlacklistWarning from "../../hooks/useTokenBlacklistWarning";
 import {
   selectTransferAmount,
   selectTransferIsSourceComplete,
@@ -47,6 +48,10 @@ function Source({
   const isSourceComplete = useSelector(selectTransferIsSourceComplete);
   const shouldLockFields = useSelector(selectTransferShouldLockFields);
   const { isReady, statusMessage } = useIsWalletReady(sourceChain);
+  const tokenBlacklistWarning = useTokenBlacklistWarning(
+    sourceChain,
+    parsedTokenAccount?.mintKey
+  );
   const handleSourceChange = useCallback(
     (event) => {
       dispatch(setSourceChain(event.target.value));
@@ -112,7 +117,7 @@ function Source({
         disabled={!isSourceComplete}
         onClick={handleNextClick}
         showLoader={false}
-        error={statusMessage || error}
+        error={statusMessage || error || tokenBlacklistWarning}
       >
         Next
       </ButtonWithLoader>
diff --git a/bridge_ui/src/hooks/useTokenBlacklistWarning.ts b/bridge_ui/src/hooks/useTokenBlacklistWarning.ts
new file mode 100644
index 000000000..ad5e34560
--- /dev/null
+++ b/bridge_ui/src/hooks/useTokenBlacklistWarning.ts
@@ -0,0 +1,27 @@
+import {
+  ChainId,
+  CHAIN_ID_ETH,
+  CHAIN_ID_SOLANA,
+} from "@certusone/wormhole-sdk";
+import { useMemo } from "react";
+import {
+  ETH_TOKENS_THAT_EXIST_ELSEWHERE,
+  SOLANA_TOKENS_THAT_EXIST_ELSEWHERE,
+} from "../utils/consts";
+
+export default function useTokenBlacklistWarning(
+  chainId: ChainId,
+  tokenAddress: string | undefined
+) {
+  return useMemo(
+    () =>
+      tokenAddress &&
+      ((chainId === CHAIN_ID_SOLANA &&
+        SOLANA_TOKENS_THAT_EXIST_ELSEWHERE.includes(tokenAddress)) ||
+        (chainId === CHAIN_ID_ETH &&
+          ETH_TOKENS_THAT_EXIST_ELSEWHERE.includes(tokenAddress)))
+        ? "This token exists on multiple chains! Bridging the token via Wormhole will produce a wrapped version which might have no liquidity on the target chain."
+        : undefined,
+    [chainId, tokenAddress]
+  );
+}
diff --git a/bridge_ui/src/utils/consts.ts b/bridge_ui/src/utils/consts.ts
index 4c2acfcf5..d37d3d7ad 100644
--- a/bridge_ui/src/utils/consts.ts
+++ b/bridge_ui/src/utils/consts.ts
@@ -163,3 +163,29 @@ export const WORMHOLE_V1_MINT_AUTHORITY =
     : CLUSTER === "testnet"
     ? "BJa7dq3bRP216zaTdw4cdcV71WkPc1HXvmnGeFVDi5DC"
     : "";
+
+// hardcoded addresses for warnings
+export const SOLANA_TOKENS_THAT_EXIST_ELSEWHERE = [
+  "SRMuApVNdxXokk5GT7XD5cUUgXMBCoAz2LHeuAoKWRt", //  SRM
+  "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v", // USDC
+  "kinXdEcpDQeHPEuQnqmUgtYykqKGVFq6CeVX5iAHJq6", //  KIN
+  "CDJWUqTcYTVAKXAVXoQZFes5JUFc7owSeq7eMQcDSbo5", // renBTC
+  "8wv2KAykQstNAj2oW6AHANGBiFKVFhvMiyyzzjhkmGvE", // renLUNA
+  "G1a6jxYz3m8DVyMqYnuV7s86wD4fvuXYneWSpLJkmsXj", // renBCH
+  "FKJvvVJ242tX7zFtzTmzqoA631LqHh4CdgcN8dcfFSju", // renDGB
+  "ArUkYE2XDKzqy77PRRGjo4wREWwqk6RXTfM9NeqzPvjU", // renDOGE
+  "E99CQ2gFMmbiyK2bwiaFNWUUmwz4r8k2CVEFxwuvQ7ue", // renZEC
+  "De2bU64vsXKU9jq4bCjeDxNRGPn8nr3euaTK8jBYmD3J", // renFIL
+];
+export const ETH_TOKENS_THAT_EXIST_ELSEWHERE = [
+  getAddress("0x476c5E26a75bd202a9683ffD34359C0CC15be0fF"), //  SRM
+  getAddress("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48"), //  USDC
+  getAddress("0x818fc6c2ec5986bc6e2cbf00939d90556ab12ce5"), //  KIN
+  getAddress("0xeb4c2781e4eba804ce9a9803c67d0893436bb27d"), // renBTC
+  getAddress("0x52d87F22192131636F93c5AB18d0127Ea52CB641"), // renLUNA
+  getAddress("0x459086f2376525bdceba5bdda135e4e9d3fef5bf"), // renBCH
+  getAddress("0xe3cb486f3f5c639e98ccbaf57d95369375687f80"), // renDGB
+  getAddress("0x3832d2F059E55934220881F831bE501D180671A7"), // renDOGE
+  getAddress("0x1c5db575e2ff833e46a2e9864c22f4b22e0b37c2"), // renZEC
+  getAddress("0xD5147bc8e386d91Cc5DBE72099DAC6C9b99276F5"), // renFIL
+];