Move to etherscan v2

packages/nextjs/utils/abi.ts

@@ -1,43 +1,11 @@
-import { NETWORKS_EXTRA_DATA } from "./scaffold-eth";
 import { isZeroAddress } from "./scaffold-eth/common";
 import { Address } from "viem";
-import * as chains from "viem/chains";
-
-const findChainById = (chainId: number): chains.Chain => {
-  const chainEntries = Object.entries(chains as Record<string, chains.Chain>);
-
-  for (const [, chain] of chainEntries) {
-    if (chain.id === chainId) {
-      return chain;
-    }
-  }
-
-  throw new Error(`No chain found with ID ${chainId}`);
-};
-
-const getEtherscanApiKey = (chainId: number): string => {
-  const networkData = NETWORKS_EXTRA_DATA[chainId];
-
-  if (!networkData || !networkData.etherscanApiKey) {
-    console.warn(`No API key found for chain ID ${chainId}`);
-    return "";
-  }
-
-  return networkData.etherscanApiKey;
-};
 
 export const fetchContractABIFromEtherscan = async (verifiedContractAddress: Address, chainId: number) => {
-  const chain = findChainById(chainId);
-
-  if (!chain || !chain.blockExplorers?.default?.apiUrl) {
-    throw new Error(`ChainId ${chainId} not found in supported networks or missing block explorer API URL`);
-  }
-
-  const apiKey = getEtherscanApiKey(chainId);
-  const apiKeyUrlParam = apiKey.trim().length > 0 ? `&apikey=${apiKey}` : "";
+  const apiKey = process.env.NEXT_PUBLIC_MAINNET_ETHERSCAN_API_KEY;
 
   // First call to get source code and check for implementation
-  const sourceCodeUrl = `${chain.blockExplorers.default.apiUrl}?module=contract&action=getsourcecode&address=${verifiedContractAddress}${apiKeyUrlParam}`;
+  const sourceCodeUrl = `https://api.etherscan.io/v2/api?chainid=${chainId}&module=contract&action=getsourcecode&address=${verifiedContractAddress}&apikey=${apiKey}`;
 
   const sourceCodeResponse = await fetch(sourceCodeUrl);
   const sourceCodeData = await sourceCodeResponse.json();
@@ -52,7 +20,7 @@ export const fetchContractABIFromEtherscan = async (verifiedContractAddress: Add
 
   // If there's an implementation address, make a second call to get its ABI
   if (implementation && !isZeroAddress(implementation)) {
-    const abiUrl = `${chain.blockExplorers.default.apiUrl}?module=contract&action=getabi&address=${implementation}${apiKeyUrlParam}`;
+    const abiUrl = `https://api.etherscan.io/v2/api?chainid=${chainId}&module=contract&action=getabi&address=${implementation}&apikey=${apiKey}`;
     const abiResponse = await fetch(abiUrl);
     const abiData = await abiResponse.json();