support switch user (#493)

* support switch user

* update changelog

* don't ask for newUser value when switching users

CHANGELOG.md

@@ -28,6 +28,7 @@ x.x.x Release notes (yyyy-MM-dd)
 * Expose currentUser property on App. ([473](https://github.com/realm/realm-dart/pull/473))
 * Support logout user. ([#476](https://github.com/realm/realm-dart/pull/476))
 * Support remove user. ([#492](https://github.com/realm/realm-dart/pull/492))
+* Support switch current user. ([#493](https://github.com/realm/realm-dart/pull/493))
 
 ### Fixed
 * Fixed an issue that would result in the wrong transaction being rolled back if you start a write transaction inside a write transaction. ([#442](https://github.com/realm/realm-dart/issues/442))

lib/src/app.dart

@@ -156,6 +156,11 @@ class App {
  Future<void> removeUser(User user) async {
  return await realmCore.removeUser(this, user);
  }
+
+ /// Switches the [currentUser] to the one specified in [user].
+ void switchUser(User user) {
+ realmCore.switchUser(this, user);
+ }
 }
 
 /// @nodoc

lib/src/native/realm_core.dart

@@ -1092,6 +1092,18 @@ class _RealmCore {
  "Remove user failed");
  return completer.future;
  }
+
+ void switchUser(App application, User user) {
+ return using((arena) {
+ _realmLib.invokeGetBool(
+ () => _realmLib.realm_app_switch_user(
+ application.handle._pointer,
+ user.handle._pointer,
+ nullptr,
+ ),
+ "Switch user failed");
+ });
+ }
 }
 
 class LastError {