From d58c5e10abd2c4cb736907d90800feb85ab25e61 Mon Sep 17 00:00:00 2001
From: Martin Picco <martin@xlabs.xyz>
Date: Fri, 17 Nov 2023 11:43:16 -0300
Subject: [PATCH] Fix wormholescan explorer link not showing for gateway chains
 (#1244)

---
 sdk/src/types.ts                              |  4 +-
 .../routes/cosmosGateway/utils/getMessage.ts  |  2 -
 wormhole-connect/src/routes/utils.ts          |  2 +-
 wormhole-connect/src/views/Redeem/Tag.tsx     | 47 ++++++++++---------
 4 files changed, 29 insertions(+), 26 deletions(-)

diff --git a/sdk/src/types.ts b/sdk/src/types.ts
index 3fa70e787..61a3c9697 100644
--- a/sdk/src/types.ts
+++ b/sdk/src/types.ts
@@ -108,8 +108,8 @@ export interface ParsedMessage {
   tokenAddress: string;
   tokenChain: ChainName;
   tokenId: TokenId;
-  sequence: BigNumber;
-  emitterAddress: string;
+  sequence?: BigNumber;
+  emitterAddress?: string;
   block: number;
   gasFee?: BigNumber;
   payload?: string;
diff --git a/wormhole-connect/src/routes/cosmosGateway/utils/getMessage.ts b/wormhole-connect/src/routes/cosmosGateway/utils/getMessage.ts
index 1c1fbb170..5eec60e4e 100644
--- a/wormhole-connect/src/routes/cosmosGateway/utils/getMessage.ts
+++ b/wormhole-connect/src/routes/cosmosGateway/utils/getMessage.ts
@@ -98,8 +98,6 @@ export async function getUnsignedMessageFromCosmos(
       address: tokenAddress,
       chain: tokenChain,
     },
-    emitterAddress: '',
-    sequence: BigNumber.from(0),
   });
 
   return {
diff --git a/wormhole-connect/src/routes/utils.ts b/wormhole-connect/src/routes/utils.ts
index 772120ad1..0a5c12ec1 100644
--- a/wormhole-connect/src/routes/utils.ts
+++ b/wormhole-connect/src/routes/utils.ts
@@ -35,7 +35,7 @@ export const adaptParsedMessage = async (
     tokenKey: token?.key || '',
     tokenDecimals: decimals,
     receivedTokenKey: token?.key || '',
-    sequence: parsed.sequence.toString(),
+    sequence: parsed.sequence?.toString(),
     gasFee: parsed.gasFee ? parsed.gasFee.toString() : undefined,
   };
   // get wallet address of associated token account for Solana
diff --git a/wormhole-connect/src/views/Redeem/Tag.tsx b/wormhole-connect/src/views/Redeem/Tag.tsx
index ea4c4797d..b1d7a1d20 100644
--- a/wormhole-connect/src/views/Redeem/Tag.tsx
+++ b/wormhole-connect/src/views/Redeem/Tag.tsx
@@ -1,10 +1,11 @@
 import { CHAIN_ID_WORMCHAIN } from '@certusone/wormhole-sdk';
+import { stripHexPrefix } from '@wormhole-foundation/wormhole-connect-sdk';
 import LaunchIcon from '@mui/icons-material/Launch';
 import InputContainer from 'components/InputContainer';
 import { CHAINS, WORMSCAN, isMainnet } from 'config';
 import ArrowRight from 'icons/ArrowRight';
 import TokenIcon from 'icons/TokenIcons';
-import React from 'react';
+import React, { useMemo } from 'react';
 import { useSelector } from 'react-redux';
 import { RootState } from 'store';
 import { makeStyles } from 'tss-react/mui';
@@ -36,29 +37,33 @@ const useStyles = makeStyles()((theme) => ({
 function ChainsTag() {
   const { classes } = useStyles();
   const txData = useSelector((state: RootState) => state.redeem.txData)!;
+  const signedMessage = useSelector(
+    (state: RootState) => state.redeem.signedMessage,
+  );
   const fromChainConfig = CHAINS[txData.fromChain]!;
   const toChainConfig = CHAINS[txData.toChain]!;
 
-  const emitterAddress = txData.emitterAddress
-    ? txData.emitterAddress.startsWith('0x')
-      ? txData.emitterAddress.slice(2)
-      : txData.emitterAddress
-    : undefined;
-  // As of 2023-10-12, wormscan only supports tx lookup on EVM chains (before a VAA is generated)
-  const link =
-    txData &&
-    (isEvmChain(fromChainConfig.id) && txData.sendTx
-      ? `${WORMSCAN}tx/${txData.sendTx}${isMainnet ? '' : '?network=TESTNET'}`
-      : txData.emitterAddress &&
-        txData.sequence &&
-        // Gateway-connected chain VAAs come from gateway
-        `${WORMSCAN}tx/${
-          isGatewayChain(fromChainConfig.id)
-            ? CHAIN_ID_WORMCHAIN
-            : fromChainConfig.id
-        }/${emitterAddress}/${txData.sequence}${
-          isMainnet ? '' : '?network=TESTNET'
-        }`);
+  const sendTx = txData.sendTx || signedMessage?.sendTx;
+  const sequence = txData.sequence || signedMessage?.sequence;
+  const baseEmitter = txData.emitterAddress || signedMessage?.emitterAddress;
+
+  const emitter = baseEmitter ? stripHexPrefix(baseEmitter) : undefined;
+
+  const link = useMemo(() => {
+    if (!txData) return;
+    // As of 2023-10-12, wormscan only supports tx lookup on EVM chains (before a VAA is generated)
+    if (isEvmChain(fromChainConfig.id) && sendTx) {
+      return `${WORMSCAN}tx/${sendTx}${isMainnet ? '' : '?network=TESTNET'}`;
+    }
+    if (!emitter || !sequence) return;
+
+    const chainId = isGatewayChain(fromChainConfig.id)
+      ? CHAIN_ID_WORMCHAIN
+      : fromChainConfig.id;
+    return `${WORMSCAN}tx/${chainId}/${emitter}/${sequence}${
+      isMainnet ? '' : '?network=TESTNET'
+    }`;
+  }, [txData, sendTx, emitter, sequence, fromChainConfig.id]);
   return (
     <div>
       <InputContainer>