first commit

lib/services/finamp_user_helper.dart

@@ -0,0 +1,67 @@
+import 'package:flutter/foundation.dart';
+import 'package:hive_flutter/hive_flutter.dart';
+
+import '../models/finamp_models.dart';
+import '../models/jellyfin_models.dart';
+
+/// Helper class for Finamp users. Note that this class does not talk to the
+/// Jellyfin server, so stuff like logging in/out is handled in JellyfinApiData.
+class FinampUserHelper {
+  final _finampUserBox = Hive.box<FinampUser>("FinampUsers");
+  final _currentUserIdBox = Hive.box<String>("CurrentUserId");
+
+  /// Checks if there are any saved users.
+  bool get isUsersEmpty => _finampUserBox.isEmpty;
+
+  /// Loads the id from CurrentUserId. Returns null if no id is stored.
+  String? get currentUserId => _currentUserIdBox.get("CurrentUserId");
+
+  /// Loads the FinampUser with the id from CurrentUserId. Returns null if no
+  /// user exists.
+  FinampUser? get currentUser =>
+      _finampUserBox.get(_currentUserIdBox.get("CurrentUserId"));
+
+  ValueListenable<Box<FinampUser>> get finampUsersListenable =>
+      _finampUserBox.listenable();
+
+  Iterable<FinampUser> get finampUsers => _finampUserBox.values;
+
+  /// Saves a new user to the Hive box and sets the CurrentUserId.
+  Future<void> saveUser(FinampUser newUser) async {
+    await Future.wait([
+      _finampUserBox.put(newUser.id, newUser),
+      _currentUserIdBox.put("CurrentUserId", newUser.id),
+    ]);
+  }
+
+  /// Sets the views of the current user
+  void setCurrentUserViews(List<BaseItemDto> newViews) {
+    final currentUserId = _currentUserIdBox.get("CurrentUserId");
+    FinampUser currentUserTemp = currentUser!;
+
+    currentUserTemp.views = Map<String, BaseItemDto>.fromEntries(
+        newViews.map((e) => MapEntry(e.id, e)));
+    currentUserTemp.currentViewId = currentUserTemp.views.keys.first;
+
+    _finampUserBox.put(currentUserId, currentUserTemp);
+  }
+
+  void setCurrentUserCurrentViewId(String newViewId) {
+    final currentUserId = _currentUserIdBox.get("CurrentUserId");
+    FinampUser currentUserTemp = currentUser!;
+
+    currentUserTemp.currentViewId = newViewId;
+
+    _finampUserBox.put(currentUserId, currentUserTemp);
+  }
+
+  /// Removes the user with the given id. If the given id is the current user
+  /// id, CurrentUserId is cleared.
+  void removeUser(String id) {
+    if (id == _currentUserIdBox.get("CurrentUserId")) {
+      _currentUserIdBox.delete("CurrentUserId");
+    }
+
+    _finampUserBox.delete(id);
+  }
+}