Merge pull request #2 from candidelabs/feat/add-check-for-supported-g…

…as-tokens-example add check for supported gas tokens in example
candidelabs · Sep 18, 2023 · 9298bbd · 9298bbd
2 parents bc83dcd + 27ad02b
commit 9298bbd
Showing 1 changed file with 16 additions and 1 deletion.
diff --git a/examples/CandideAccountExamples/CreateAccountAndSendTransactionUsingPaymaster/src/index.ts b/examples/CandideAccountExamples/CreateAccountAndSendTransactionUsingPaymaster/src/index.ts
@@ -84,7 +84,22 @@ async function main(): Promise<void> {
         entrypointAddress,
         paymasterRPC
     )
-    let paymasterAndDataResult = await paymaster.getPaymasterCallDataForPayingGasWithErc20(user_operation, erc20TokenAddress)
+    const supportedGasTokens = await paymaster.getSupportedERC20Tokens();
+
+    if ("code" in supportedGasTokens) {
+        const errorresult = supportedGasTokens as JsonRpcError
+        const errorMessage = errorresult.message
+        console.log(errorMessage);
+        return
+    }
+
+    const gasToken = supportedGasTokens.tokens.find(token => token.address === erc20TokenAddress.toLowerCase());
+    if (!gasToken) {
+        console.log("Gas token selected is not supported");
+        return
+    }
+
+    let paymasterAndDataResult = await paymaster.getPaymasterCallDataForPayingGasWithErc20(user_operation, gasToken.address)
     console.log(paymasterAndDataResult)
     if("code" in paymasterAndDataResult){
         const errorresult = paymasterAndDataResult as JsonRpcError