Initial commit

lib/features/settings/model/application_settings_state.dart

@@ -0,0 +1,61 @@
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_paperless_mobile/core/type/json.dart';
+
+///
+/// State holding the current application settings such as selected language, theme mode and more.
+///
+///
+class ApplicationSettingsState {
+  static final defaultSettings = ApplicationSettingsState(
+    isLocalAuthenticationEnabled: false,
+    preferredLocaleSubtag: Platform.localeName.split('_').first,
+    preferredThemeMode: ThemeMode.system,
+  );
+
+  static const isLocalAuthenticationEnabledKey = "isLocalAuthenticationEnabled";
+  static const preferredLocaleSubtagKey = "localeSubtag";
+  static const preferredThemeModeKey = "preferredThemeModeKey";
+
+  final bool isLocalAuthenticationEnabled;
+  final String preferredLocaleSubtag;
+
+  final ThemeMode preferredThemeMode;
+
+  ApplicationSettingsState({
+    required this.preferredLocaleSubtag,
+    required this.preferredThemeMode,
+    required this.isLocalAuthenticationEnabled,
+  });
+
+  JSON toJson() {
+    return {
+      isLocalAuthenticationEnabledKey: isLocalAuthenticationEnabled,
+      preferredLocaleSubtagKey: preferredLocaleSubtag,
+      preferredThemeModeKey: preferredThemeMode.index,
+    };
+  }
+
+  ApplicationSettingsState.fromJson(JSON json)
+      : isLocalAuthenticationEnabled =
+            json[isLocalAuthenticationEnabledKey] ?? defaultSettings.isLocalAuthenticationEnabled,
+        preferredLocaleSubtag =
+            json[preferredLocaleSubtagKey] ?? Platform.localeName.split("_").first,
+        preferredThemeMode = json[preferredThemeModeKey] != null
+            ? ThemeMode.values[(json[preferredThemeModeKey])]
+            : defaultSettings.preferredThemeMode;
+
+  ApplicationSettingsState copyWith({
+    bool? isLocalAuthenticationEnabled,
+    String? preferredLocaleSubtag,
+    ThemeMode? preferredThemeMode,
+  }) {
+    return ApplicationSettingsState(
+      isLocalAuthenticationEnabled:
+          isLocalAuthenticationEnabled ?? this.isLocalAuthenticationEnabled,
+      preferredLocaleSubtag: preferredLocaleSubtag ?? this.preferredLocaleSubtag,
+      preferredThemeMode: preferredThemeMode ?? this.preferredThemeMode,
+    );
+  }
+}