implement request-response pattern for ListAdmins and update tests.

chainio/clients/elcontracts/reader.go

@@ -1016,14 +1016,22 @@ func (r *ChainReader) ListPendingAdmins(
 
 func (r *ChainReader) ListAdmins(
 	ctx context.Context,
-	accountAddress gethcommon.Address,
-) ([]gethcommon.Address, error) {
-	pendingAdmins, err := r.permissionController.GetAdmins(&bind.CallOpts{Context: ctx}, accountAddress)
+	blockNumber *big.Int,
+	request ListAdminsRequest,
+) (ListAdminsResponse, error) {
+	if r.permissionController == nil {
+		return ListAdminsResponse{}, errors.New("PermissionController contract not provided")
+	}
+
+	admins, err := r.permissionController.GetAdmins(
+		&bind.CallOpts{Context: ctx, BlockNumber: blockNumber},
+		request.AccountAddress,
+	)
 	// This call should not fail since it's a getter
 	if err != nil {
-		return nil, utils.WrapError("call to permission controller failed", err)
+		return ListAdminsResponse{}, utils.WrapError("call to permission controller failed", err)
 	}
-	return pendingAdmins, nil
+	return ListAdminsResponse{Admins: admins}, nil
 }
 
 func (r *ChainReader) IsPendingAdmin(

chainio/clients/elcontracts/reader_test.go

@@ -762,11 +762,14 @@ func TestAdminFunctions(t *testing.T) {
 		assert.NoError(t, err)
 		assert.Equal(t, receipt.Status, gethtypes.ReceiptStatusSuccessful)
 
-		listAdmins, err := chainReader.ListAdmins(context.Background(), operatorAddr)
+		requestAdmin := elcontracts.ListAdminsRequest{
+			AccountAddress: operatorAddr,
+		}
+		response, err := chainReader.ListAdmins(context.Background(), nil, requestAdmin)
 		assert.NoError(t, err)
-		assert.Len(t, listAdmins, 1)
+		assert.Len(t, response.Admins, 1)
 
-		admin := listAdmins[0]
+		admin := response.Admins[0]
 		isAdmin, err := chainReader.IsAdmin(context.Background(), operatorAddr, admin)
 		assert.NoError(t, err)
 		assert.True(t, isAdmin)

chainio/clients/elcontracts/types.go

@@ -393,3 +393,11 @@ type ListPendingAdminsRequest struct {
 type ListPendingAdminsResponse struct {
 	PendingAdmins []common.Address
 }
+
+type ListAdminsRequest struct {
+	AccountAddress common.Address
+}
+
+type ListAdminsResponse struct {
+	Admins []common.Address
+}