Add account delegation preparation

src/frontend/src/lib/generated/internet_identity_idl.js

@@ -387,6 +387,14 @@ export const idlFactory = ({ IDL }) => {
     'expiration' : Timestamp,
     'anchor_number' : UserNumber,
   });
+  const PrepareAccountDelegation = IDL.Record({
+    'user_key' : UserKey,
+    'timestamp' : Timestamp,
+  });
+  const AccountDelegationError = IDL.Variant({
+    'InternalCanisterError' : IDL.Text,
+    'Unauthorized' : IDL.Principal,
+  });
   const PrepareIdAliasRequest = IDL.Record({
     'issuer' : FrontendHostname,
     'relying_party' : FrontendHostname,
@@ -653,7 +661,12 @@ export const idlFactory = ({ IDL }) => {
           SessionKey,
           IDL.Opt(IDL.Nat64),
         ],
-        [UserKey, Timestamp],
+        [
+          IDL.Variant({
+            'Ok' : PrepareAccountDelegation,
+            'Err' : AccountDelegationError,
+          }),
+        ],
         [],
       ),
     'prepare_delegation' : IDL.Func(

src/frontend/src/lib/generated/internet_identity_types.d.ts

@@ -2,6 +2,8 @@ import type { Principal } from '@dfinity/principal';
 import type { ActorMethod } from '@dfinity/agent';
 import type { IDL } from '@dfinity/candid';
 
+export type AccountDelegationError = { 'InternalCanisterError' : string } |
+  { 'Unauthorized' : Principal };
 export interface AccountInfo {
   'name' : [] | [string],
   'origin' : string,
@@ -302,6 +304,10 @@ export interface OpenIdPrepareDelegationResponse {
   'expiration' : Timestamp,
   'anchor_number' : UserNumber,
 }
+export interface PrepareAccountDelegation {
+  'user_key' : UserKey,
+  'timestamp' : Timestamp,
+}
 export type PrepareIdAliasError = { 'InternalCanisterError' : string } |
   { 'Unauthorized' : Principal };
 export interface PrepareIdAliasRequest {
@@ -524,7 +530,8 @@ export interface _SERVICE {
       SessionKey,
       [] | [bigint],
     ],
-    [UserKey, Timestamp]
+    { 'Ok' : PrepareAccountDelegation } |
+      { 'Err' : AccountDelegationError }
   >,
   'prepare_delegation' : ActorMethod<
     [UserNumber, FrontendHostname, SessionKey, [] | [bigint]],

src/internet_identity/internet_identity.did

@@ -571,6 +571,16 @@ type UpdateAccountError = variant {
     Unauthorized : principal;
 };
 
+type AccountDelegationError = variant {
+    InternalCanisterError : text;
+    Unauthorized : principal;
+};
+
+type PrepareAccountDelegation = record {
+    user_key : UserKey;
+    timestamp : Timestamp;
+};
+
 type GetAccountsError = variant {
     InternalCanisterError : text;
     Unauthorized : principal;
@@ -873,7 +883,7 @@ service : (opt InternetIdentityInit) -> {
         account_number : opt AccountNumber, // Null is unreserved default account
         session_key : SessionKey,
         max_ttl : opt nat64
-    ) -> (UserKey, Timestamp);
+    ) -> (variant { Ok : PrepareAccountDelegation; Err : AccountDelegationError });
 
     get_account_delegation : (
         anchor_number : UserNumber,