Set user email with ETH address while authenticating (#5)

Part of [Service provider auctions for web deployments](https://www.notion.so/Service-provider-auctions-for-web-deployments-104a6b22d47280dbad51d28aa3a91d75)

Reviewed-on: #5
Co-authored-by: Nabarun <nabarun@deepstacksoft.com>
Co-committed-by: Nabarun <nabarun@deepstacksoft.com>

packages/backend/environments/local.toml.example

@@ -4,8 +4,11 @@
   gqlPath = "/graphql"
   [server.session]
     secret = ""
+    # Frontend webapp URL origin
     appOriginUrl = "http://localhost:3000"
+    # Set to true if server running behind proxy
     trustProxy = false
+    # Backend URL hostname
     domain = "localhost"
 
 [database]

packages/backend/src/routes/auth.ts

@@ -46,6 +46,9 @@ router.post('/authenticate', async (req, res) => {
   }
 });
 
+//
+// SIWE Auth
+//
 router.post('/validate', async (req, res) => {
   const { message, signature } = req.body;
   const { success, data } = await new SiweMessage(message).verify({
@@ -61,11 +64,11 @@ router.post('/validate', async (req, res) => {
   if (!user) {
     const newUser = await service.createUser({
       ethAddress: data.address,
-      email: '',
-      name: '',
+      email: `${data.address}@example.com`,
       subOrgId: '',
       turnkeyWalletId: '',
     });
+
     // SIWESession from the web3modal library requires both address and chain ID
     req.session.address = newUser.id;
     req.session.chainId = data.chainId;

packages/backend/src/service.ts

@@ -378,7 +378,7 @@ export class Service {
   }
 
   async createUser(params: {
-    name: string;
+    name?: string;
     email: string;
     subOrgId: string;
     ethAddress: string;