WIP - started implementing quick search

lib/features/settings/bloc/application_settings_state.dart

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+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:json_annotation/json_annotation.dart';
+import 'package:paperless_mobile/features/settings/model/color_scheme_option.dart';
+import 'package:paperless_mobile/features/settings/model/view_type.dart';
+
+part 'application_settings_state.g.dart';
+
+///
+/// State holding the current application settings such as selected language, theme mode and more.
+///
+@JsonSerializable()
+class ApplicationSettingsState {
+  static final defaultSettings = ApplicationSettingsState(
+    preferredLocaleSubtag: Platform.localeName.split('_').first,
+  );
+
+  final bool isLocalAuthenticationEnabled;
+  final String preferredLocaleSubtag;
+  final ThemeMode preferredThemeMode;
+  final ViewType preferredViewType;
+  final ColorSchemeOption preferredColorSchemeOption;
+
+  ApplicationSettingsState({
+    required this.preferredLocaleSubtag,
+    this.preferredThemeMode = ThemeMode.system,
+    this.isLocalAuthenticationEnabled = false,
+    this.preferredViewType = ViewType.list,
+    this.preferredColorSchemeOption = ColorSchemeOption.dynamic,
+  });
+
+  Map<String, dynamic> toJson() => _$ApplicationSettingsStateToJson(this);
+  factory ApplicationSettingsState.fromJson(Map<String, dynamic> json) =>
+      _$ApplicationSettingsStateFromJson(json);
+
+  ApplicationSettingsState copyWith({
+    bool? isLocalAuthenticationEnabled,
+    String? preferredLocaleSubtag,
+    ThemeMode? preferredThemeMode,
+    ViewType? preferredViewType,
+    ColorSchemeOption? preferredColorSchemeOption,
+  }) {
+    return ApplicationSettingsState(
+      isLocalAuthenticationEnabled:
+          isLocalAuthenticationEnabled ?? this.isLocalAuthenticationEnabled,
+      preferredLocaleSubtag:
+          preferredLocaleSubtag ?? this.preferredLocaleSubtag,
+      preferredThemeMode: preferredThemeMode ?? this.preferredThemeMode,
+      preferredViewType: preferredViewType ?? this.preferredViewType,
+      preferredColorSchemeOption:
+          preferredColorSchemeOption ?? this.preferredColorSchemeOption,
+    );
+  }
+}