feat: add siweMessage helper

apps/customer/app/test/page.tsx

@@ -15,6 +15,7 @@ import {
   PaymentStandard,
   placeOrderMessage,
   rfc3339,
+  siweMessage,
 } from '@monerium/sdk';
 import {
   MoneriumContext,
@@ -644,27 +645,15 @@ export default function Test() {
     });
   };
   const authorizeSiwe = () => {
-    const date = new Date();
-    const issueDate = rfc3339(new Date(date.toISOString()));
-
-    date.setMinutes(date.getMinutes() + 5);
-    const expiryDate = date.toISOString();
-
-    const siwe_message = `localhost:3000 wants you to sign in with your Ethereum account:
-0xB64Fed2aFF534D5320BF401d0D5B93Ed7AbCf13E
-
-Allow SDK TEST APP to access my data on Monerium
-
-URI: http://localhost:3000/dashboard
-Version: 1
-Chain ID: 100
-Nonce: ${Math.random().toString(36).substring(2, 16)}
-Issued At: ${issueDate}
-Expiration Time: ${expiryDate}
-Resources:
-- https://monerium.com/siwe
-- https://example.com/privacy-policy
-- https://example.com/terms-of-service`;
+    const siwe_message = siweMessage({
+      domain: 'localhost:3000',
+      address: walletAddress,
+      appName: 'SDK TEST APP',
+      redirectUri: 'http://localhost:3000/dashboard',
+      chainId: chainId,
+      privacyPolicyUrl: 'https://example.com/privacy-policy',
+      termsOfServiceUrl: 'https://example.com/terms-of-service',
+    });
 
     signMessageAsync({ message: siwe_message }).then((signature) => {
       siwe({ message: siwe_message, signature });

packages/sdk/src/index.ts

@@ -36,6 +36,7 @@ export {
   getChain,
   parseChain,
   shortenIban,
+  siweMessage,
 } from './utils';
 
 export { MoneriumClient };

packages/sdk/src/utils.ts

@@ -1,4 +1,12 @@
-import { Balances, Chain, ChainId, Currency, Environment } from './types';
+import { generateCodeChallenge, generateRandomString } from './helpers';
+import {
+  Balances,
+  Chain,
+  ChainId,
+  Currency,
+  Environment,
+  EvmChainId,
+} from './types';
 
 /**
  *
@@ -136,6 +144,46 @@ export const placeOrderMessage = (
   }
   return `Send ${curr} ${amount} to ${receiver} at ${rfc3339(new Date())}`;
 };
+/**
+ * https://monerium.com/siwe
+ */
+export const siweMessage = ({
+  domain,
+  address,
+  appName,
+  redirectUri,
+  chainId,
+  issuedAt = new Date().toISOString(),
+  expiryAt = new Date(Date.now() + 1000 * 60 * 5).toISOString(),
+  privacyPolicyUrl,
+  termsOfServiceUrl,
+}: {
+  domain: string;
+  address: string;
+  appName: string;
+  redirectUri: string;
+  chainId: EvmChainId;
+  issuedAt: string;
+  expiryAt: string;
+  privacyPolicyUrl: string;
+  termsOfServiceUrl: string;
+}) => {
+  return `${domain} wants you to sign in with your Ethereum account:
+${address}
+
+Allow ${appName} to access my data on Monerium
+
+URI: ${redirectUri}
+Version: 1
+Chain ID: ${chainId}
+Nonce: ${generateRandomString().slice(0, 16)}
+Issued At: ${issuedAt}
+Expiration Time: ${expiryAt}
+Resources:
+- https://monerium.com/siwe
+- ${privacyPolicyUrl}
+- ${termsOfServiceUrl}`;
+};
 
 /**
  * Replacement for URLSearchParams, Metamask snaps do not include node globals.