WIP - Add system notifications for document upload progress/status

lib/features/tasks/cubit/task_status_cubit.dart

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+import 'package:bloc/bloc.dart';
+import 'package:equatable/equatable.dart';
+import 'package:paperless_api/paperless_api.dart';
+part 'task_status_state.dart';
+
+class TaskStatusCubit extends Cubit<TaskStatusState> {
+  final PaperlessTasksApi _api;
+  TaskStatusCubit(this._api) : super(const TaskStatusState());
+
+  void startListeningToTask(String taskId) {
+    _api
+        .listenForTaskChanges(taskId)
+        .forEach(
+          (element) => TaskStatusState(
+            isListening: true,
+            isAcknowledged: false,
+            task: element,
+          ),
+        )
+        .whenComplete(() => emit(state.copyWith(isListening: false)));
+  }
+
+  void acknowledgeCurrentTask() {
+    emit(state.copyWith(isListening: false, isAcknowledged: true));
+  }
+}

lib/features/tasks/cubit/task_status_state.dart

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+part of 'task_status_cubit.dart';
+
+class TaskStatusState extends Equatable {
+  final Task? task;
+  final bool isListening;
+  final bool isAcknowledged;
+
+  const TaskStatusState({
+    this.task,
+    this.isListening = false,
+    this.isAcknowledged = false,
+  });
+
+  bool get isActive => isListening && !isAcknowledged;
+
+  bool get isSuccess => task?.status == TaskStatus.success;
+
+  String? get taskId => task?.taskId;
+
+  @override
+  List<Object> get props => [];
+
+  TaskStatusState copyWith({
+    Task? task,
+    bool? isListening,
+    bool? isAcknowledged,
+  }) {
+    return TaskStatusState(
+      task: task ?? this.task,
+      isListening: isListening ?? this.isListening,
+      isAcknowledged: isAcknowledged ?? this.isAcknowledged,
+    );
+  }
+}

lib/features/tasks/cubit/tasks_cubit.dart

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+import 'package:bloc/bloc.dart';
+import 'package:equatable/equatable.dart';
+
+part 'tasks_state.dart';
+
+class TasksCubit extends Cubit<TasksState> {
+  TasksCubit() : super(TasksInitial());
+}

lib/features/tasks/cubit/tasks_state.dart

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+part of 'tasks_cubit.dart';
+
+abstract class TasksState extends Equatable {
+  const TasksState();
+
+  @override
+  List<Object> get props => [];
+}
+
+class TasksInitial extends TasksState {}