Refactored according to flutter lint

22 files changed, 174 insertions, 183 deletions

diff --git a/lib/main.dart b/lib/main.dart
index f7b3aca..b583f5c 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -17,7 +17,7 @@ void main() async {
 
   const AndroidInitializationSettings initializationSettingsAndroid =
       AndroidInitializationSettings("@mipmap/notification_icon");
-  final InitializationSettings initializationSettings =
+  const InitializationSettings initializationSettings =
       InitializationSettings(android: initializationSettingsAndroid);
   await Notifications.flutterLocalNotificationsPlugin
       .initialize(initializationSettings);
@@ -26,40 +26,40 @@ void main() async {
   await SettingsData.load();
   await ShoplistData.load();
 
-  runApp(AppRoot());
+  runApp(const AppRoot());
 }
 
 class AppRoot extends StatefulWidget {
   const AppRoot({Key? key}) : super(key: key);
 
   @override
-  _AppRootState createState() => _AppRootState();
+  AppRootState createState() => AppRootState();
 }
 
-class _AppRootState extends State<AppRoot> {
+class AppRootState extends State<AppRoot> {
   @override
   Widget build(BuildContext context) {
-    SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
+    SystemChrome.setSystemUIOverlayStyle(const SystemUiOverlayStyle(
       statusBarColor: cPrimaryColor,
       statusBarIconBrightness: Brightness.light,
     ));
 
     return MaterialApp(
       debugShowCheckedModeBanner: false,
-      localizationsDelegates: [
+      localizationsDelegates: const [
         AppLocalizations.delegate,
         GlobalMaterialLocalizations.delegate,
         GlobalWidgetsLocalizations.delegate,
         GlobalCupertinoLocalizations.delegate,
       ],
-      supportedLocales: [
-        const Locale('de', ''),
-        const Locale('en', ''),
-        const Locale('ru', ''),
+      supportedLocales: const [
+        Locale('de', ''),
+        Locale('en', ''),
+        Locale('ru', ''),
       ],
       theme: themeData(),
       title: "Kulinar",
-      home: MainView(),
+      home: const MainView(),
     );
   }
 
@@ -67,13 +67,13 @@ class _AppRootState extends State<AppRoot> {
     return ThemeData(
       brightness: Brightness.light,
       primarySwatch: cPrimarySwatchColor,
-      textSelectionTheme: TextSelectionThemeData(
+      textSelectionTheme: const TextSelectionThemeData(
         cursorColor: cIconColor,
       ),
-      inputDecorationTheme: InputDecorationTheme(
+      inputDecorationTheme: const InputDecorationTheme(
         hintStyle: cSearchTextStyle,
       ),
-      appBarTheme: AppBarTheme(
+      appBarTheme: const AppBarTheme(
         actionsIconTheme: IconThemeData(color: cIconColor),
         titleTextStyle: cTitleStyle,
         toolbarTextStyle: cTitleStyle,
@@ -81,7 +81,7 @@ class _AppRootState extends State<AppRoot> {
         centerTitle: true,
         elevation: 10.0,
       ),
-      buttonTheme: ButtonThemeData(
+      buttonTheme: const ButtonThemeData(
         buttonColor: cPrimaryColor,
       ),
     );
diff --git a/lib/models/data/recipe_data_class.dart b/lib/models/data/recipe_data_class.dart
index 3984ac6..3193b7d 100644
--- a/lib/models/data/recipe_data_class.dart
+++ b/lib/models/data/recipe_data_class.dart
@@ -2,24 +2,23 @@ import 'dart:convert';
 
 import 'package:kulinar_app/models/recipe_class.dart';
 import 'package:kulinar_app/util/isar_handler.dart';
-import 'package:kulinar_app/util/storage_handler.dart';
 
 class RecipeData {
   static List<Recipe> remoteRecipeList = [];
   static List<Recipe> recipeList = [];
 
   static Future<void> save() async {
-    recipeList.forEach((recipe) {
+    for (Recipe recipe in recipeList) {
       IsarHandler().save(recipe);
-    });
+    }
   }
 
   static Future<void> load() async {
     List<Recipe?> list = await IsarHandler().load();
 
-    list.forEach((recipe) {
+    for (Recipe? recipe in list) {
       recipeList.add(recipe!);
-    });
+    }
   }
 
   static String encode() {
diff --git a/lib/models/recipe_class.dart b/lib/models/recipe_class.dart
index e02ed87..7143547 100644
--- a/lib/models/recipe_class.dart
+++ b/lib/models/recipe_class.dart
@@ -20,7 +20,7 @@ class Recipe {
     List<Recipe> _list = remote ? RecipeData.remoteRecipeList : RecipeData.recipeList;
 
     for (Recipe recipe in _list) {
-      if (this.title == recipe.title && this.image == recipe.image && this.description == recipe.description) {
+      if (title == recipe.title && image == recipe.image && description == recipe.description) {
         return true;
       }
     }
@@ -29,24 +29,24 @@ class Recipe {
   }
 
   bool isDefault() {
-    if (this.title != null) return false;
-    if (this.image != null) return false;
-    if (this.description != null) return false;
-    if (this.favorite != false) return false;
-    if (this.rating != 0) return false;
+    if (title != null) return false;
+    if (image != null) return false;
+    if (description != null) return false;
+    if (favorite != false) return false;
+    if (rating != 0) return false;
 
     return true;
   }
 
   void toggleFavorite() {
-    this.favorite = !this.favorite;
+    favorite = !favorite;
   }
 
   void updateRating() {
-    if (this.rating == 5) {
-      this.rating = 0;
+    if (rating == 5) {
+      rating = 0;
     } else {
-      this.rating++;
+      rating++;
     }
   }
 }
diff --git a/lib/util/file_handler.dart b/lib/util/file_handler.dart
index db1d725..d6b909d 100644
--- a/lib/util/file_handler.dart
+++ b/lib/util/file_handler.dart
@@ -35,7 +35,7 @@ class FileHandler {
         ToastBar.showToastBar(context, AppLocalizations.of(context)!.exportSuccess, actionLabel: "");
         Notifications.notify(AppLocalizations.of(context)!.exportSuccess, AppLocalizations.of(context)!.tapHint, _file.path);
       } catch (e) {
-        print(e);
+        debugPrint("$e");
         ToastBar.showToastBar(context, AppLocalizations.of(context)!.exportError, actionLabel: "");
       }
     }
@@ -80,7 +80,7 @@ class FileHandler {
           return File(result.files.single.path!);
         }
       } catch (e) {
-        print(e);
+        debugPrint("$e");
         ToastBar.showToastBar(context, AppLocalizations.of(context)!.importError, actionLabel: "");
       }
     }
diff --git a/lib/views/favorites_view.dart b/lib/views/favorites_view.dart
index bb0f7fb..97f784c 100644
--- a/lib/views/favorites_view.dart
+++ b/lib/views/favorites_view.dart
@@ -14,17 +14,17 @@ class FavoritesView extends StatefulWidget {
   const FavoritesView({Key? key}) : super(key: key);
 
   @override
-  _FavoritesViewState createState() => _FavoritesViewState();
+  FavoritesViewState createState() => FavoritesViewState();
 }
 
-class _FavoritesViewState extends State<FavoritesView> {
+class FavoritesViewState extends State<FavoritesView> {
   BuildContext? _toastyContext;
 
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: _buildAppBar(context),
-      drawer: CustomDrawer(initalIndex: 1),
+      drawer: const CustomDrawer(initialIndex: 1),
       body: Container(
         width: double.infinity,
         child: Builder(
@@ -51,7 +51,7 @@ class _FavoritesViewState extends State<FavoritesView> {
       title: Text(AppLocalizations.of(context)!.category4),
       actions: [
         IconButton(
-          icon: Icon(Icons.search),
+          icon: const Icon(Icons.search),
           onPressed: () async {
             await showSearch(
               context: context,
@@ -68,7 +68,7 @@ class _FavoritesViewState extends State<FavoritesView> {
   Widget _buildListView() {
     List<Recipe> _filteredRecipeList = RecipeData.recipeList.where((element) => element.favorite).toList();
 
-    if (_filteredRecipeList.isEmpty) return NoContentError();
+    if (_filteredRecipeList.isEmpty) return const NoContentError();
 
     return ListView.builder(
       itemCount: _filteredRecipeList.length,
diff --git a/lib/views/file_info.dart b/lib/views/file_info.dart
index e032716..28c45f9 100644
--- a/lib/views/file_info.dart
+++ b/lib/views/file_info.dart
@@ -9,15 +9,15 @@ import 'package:kulinar_app/widgets/error_widgets.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 
 class FileInfo extends StatefulWidget {
-  FileInfo({Key? key, required this.filePath}) : super(key: key);
+  const FileInfo({Key? key, required this.filePath}) : super(key: key);
 
   final String filePath;
 
   @override
-  _FileInfoState createState() => _FileInfoState();
+  FileInfoState createState() => FileInfoState();
 }
 
-class _FileInfoState extends State<FileInfo> {
+class FileInfoState extends State<FileInfo> {
   @override
   Widget build(BuildContext context) {
     final File _file = File(widget.filePath.split(":")[1]);
@@ -27,8 +27,8 @@ class _FileInfoState extends State<FileInfo> {
       body: FutureBuilder(
         future: FileHandler.deserializeFileInformation(_file),
         builder: (BuildContext context, AsyncSnapshot<Map<String, String>> snapshot) {
-          if (snapshot.connectionState != ConnectionState.done) return CircularProgressIndicator();
-          if (snapshot.hasError || !snapshot.hasData) return UnknownError();
+          if (snapshot.connectionState != ConnectionState.done) return const CircularProgressIndicator();
+          if (snapshot.hasError || !snapshot.hasData) return const UnknownError();
 
           return _buildFileInfoTable(_getSortedSnapshotData(snapshot), _file);
         },
diff --git a/lib/views/image_view.dart b/lib/views/image_view.dart
index 615aa26..1363268 100644
--- a/lib/views/image_view.dart
+++ b/lib/views/image_view.dart
@@ -15,18 +15,16 @@ class ImageView extends StatelessWidget {
       child: Scaffold(
         backgroundColor: _averageImageColor(image),
         body: Center(
-          child: Container(
-            child: GestureDetector(
-              child: Hero(
-                tag: "image",
-                child: Image(
-                  image: FileImage(File(image)),
-                ),
+          child: GestureDetector(
+            child: Hero(
+              tag: "image",
+              child: Image(
+                image: FileImage(File(image)),
               ),
-              onTap: () {
-                Navigator.pop(context);
-              },
             ),
+            onTap: () {
+              Navigator.pop(context);
+            },
           ),
         ),
       ),
diff --git a/lib/views/info_view.dart b/lib/views/info_view.dart
index bda2d14..0d0897d 100644
--- a/lib/views/info_view.dart
+++ b/lib/views/info_view.dart
@@ -10,10 +10,10 @@ class InfoView extends StatefulWidget {
   const InfoView({Key? key}) : super(key: key);
 
   @override
-  _InfoViewState createState() => _InfoViewState();
+  InfoViewState createState() => InfoViewState();
 }
 
-class _InfoViewState extends State<InfoView> {
+class InfoViewState extends State<InfoView> {
   String name = "David Penkowoj";
   String websiteURL = "https://davidpenkowoj.de";
   String sourceCodeURL = "https://git.davidpenkowoj.de/kulinar_app.git";
@@ -23,7 +23,7 @@ class _InfoViewState extends State<InfoView> {
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(title: Text(AppLocalizations.of(context)!.category9)),
-      drawer: CustomDrawer(initalIndex: 6),
+      drawer: const CustomDrawer(initialIndex: 6),
       body: ListView(
         children: <Widget>[
           Padding(
@@ -32,7 +32,7 @@ class _InfoViewState extends State<InfoView> {
           ),
           ListTile(
             title: Text(AppLocalizations.of(context)!.info1, style: cDefaultTextStyle),
-            subtitle: Text(cVersion, style: cDetailsTextStyle),
+            subtitle: const Text(cVersion, style: cDetailsTextStyle),
           ),
           ListTile(
             title: Text(AppLocalizations.of(context)!.info2, style: cDefaultTextStyle),
@@ -42,7 +42,7 @@ class _InfoViewState extends State<InfoView> {
             title: Text(AppLocalizations.of(context)!.info3, style: cDefaultTextStyle),
             subtitle: Text(websiteURL, style: cDetailsTextStyle, overflow: TextOverflow.ellipsis),
             trailing: IconButton(
-              icon: Icon(Icons.north_east_rounded),
+              icon: const Icon(Icons.north_east_rounded),
               onPressed: () {
                 _launchURL(Uri.parse(websiteURL));
               },
@@ -52,7 +52,7 @@ class _InfoViewState extends State<InfoView> {
             title: Text(AppLocalizations.of(context)!.info4, style: cDefaultTextStyle),
             subtitle: Text(sourceCodeURL, style: cDetailsTextStyle, overflow: TextOverflow.ellipsis),
             trailing: IconButton(
-              icon: Icon(Icons.north_east_rounded),
+              icon: const Icon(Icons.north_east_rounded),
               onPressed: () {
                 _launchURL(Uri.parse(sourceCodeURL));
               },
@@ -62,7 +62,7 @@ class _InfoViewState extends State<InfoView> {
             title: Text(AppLocalizations.of(context)!.info5, style: cDefaultTextStyle),
             subtitle: Text(privacyNoticeURL, style: cDetailsTextStyle, overflow: TextOverflow.ellipsis),
             trailing: IconButton(
-              icon: Icon(Icons.north_east_rounded),
+              icon: const Icon(Icons.north_east_rounded),
               onPressed: () {
                 _launchURL(Uri.parse(privacyNoticeURL));
               },
@@ -71,7 +71,7 @@ class _InfoViewState extends State<InfoView> {
           ListTile(
             title: Text(AppLocalizations.of(context)!.info6, style: cDefaultTextStyle),
             trailing: IconButton(
-              icon: Icon(Icons.launch_rounded),
+              icon: const Icon(Icons.launch_rounded),
               onPressed: () {
                 _showDialog();
               },
@@ -95,7 +95,8 @@ class _InfoViewState extends State<InfoView> {
     if (await canLaunchUrl(url)) {
       await launchUrl(url, mode: LaunchMode.externalApplication);
     } else {
-      print('Could not launch $url');
+      debugPrint("Could not launch $url");
+      // TODO: maybe add toastbar
     }
   }
 }
diff --git a/lib/views/main_view.dart b/lib/views/main_view.dart
index 759e423..3db3e97 100644
--- a/lib/views/main_view.dart
+++ b/lib/views/main_view.dart
@@ -19,11 +19,11 @@ class MainView extends StatefulWidget {
   const MainView({Key? key}) : super(key: key);
 
   @override
-  _MainViewState createState() => _MainViewState();
+  MainViewState createState() => MainViewState();
 }
 
-class _MainViewState extends State<MainView> with SingleTickerProviderStateMixin, WidgetsBindingObserver {
-  static const platform = const MethodChannel("com.davidpenkowoj.kulinar.openfile");
+class MainViewState extends State<MainView> with SingleTickerProviderStateMixin, WidgetsBindingObserver {
+  static const platform = MethodChannel("com.davidpenkowoj.kulinar.openfile");
 
   TabController? _tabController;
   BuildContext? _toastyContext;
@@ -55,7 +55,7 @@ class _MainViewState extends State<MainView> with SingleTickerProviderStateMixin
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: _buildAppBar(context, _tabController!),
-      drawer: CustomDrawer(initalIndex: 0),
+      drawer: const CustomDrawer(initialIndex: 0),
       floatingActionButton: _buildFloatingActionButton(),
       body: Builder(builder: (BuildContext context) {
         _toastyContext = context;
@@ -87,11 +87,11 @@ class _MainViewState extends State<MainView> with SingleTickerProviderStateMixin
 
   Widget _buildFloatingActionButton() {
     return FloatingActionButton(
-      child: Icon(Icons.add, color: cIconColor),
+      child: const Icon(Icons.add, color: cIconColor),
       onPressed: () async {
         await Navigator.push(
           context,
-          SlideFromBottomRoute(child: RecipeView()),
+          SlideFromBottomRoute(child: const RecipeView()),
         );
 
         setState(() {});
@@ -100,7 +100,7 @@ class _MainViewState extends State<MainView> with SingleTickerProviderStateMixin
   }
 
   Widget _buildListView(List<Recipe> filteredRecipeList) {
-    if (filteredRecipeList.isEmpty) return NoContentError();
+    if (filteredRecipeList.isEmpty) return const NoContentError();
 
     return ListView.builder(
       itemCount: filteredRecipeList.length,
@@ -113,7 +113,7 @@ class _MainViewState extends State<MainView> with SingleTickerProviderStateMixin
       title: Text(AppLocalizations.of(context)!.category1),
       actions: [
         IconButton(
-          icon: Icon(
+          icon: const Icon(
             Icons.search,
           ),
           onPressed: () async {
diff --git a/lib/views/recipe_view.dart b/lib/views/recipe_view.dart
index f512770..faaa0ca 100644
--- a/lib/views/recipe_view.dart
+++ b/lib/views/recipe_view.dart
@@ -28,10 +28,10 @@ class RecipeView extends StatefulWidget {
   final Function? showToastCallback;
 
   @override
-  _RecipeViewState createState() => _RecipeViewState();
+  RecipeViewState createState() => RecipeViewState();
 }
 
-class _RecipeViewState extends State<RecipeView> {
+class RecipeViewState extends State<RecipeView> {
   final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
   final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
   final TextEditingController _controller1 = TextEditingController();
@@ -170,7 +170,7 @@ class _RecipeViewState extends State<RecipeView> {
 
   Widget _buildUtilityRow() {
     if (widget.remote) {
-      return SizedBox(
+      return const SizedBox(
         height: 10.0,
         width: double.infinity,
       );
@@ -248,11 +248,11 @@ class _RecipeViewState extends State<RecipeView> {
   Widget _buildDescriptionInput() {
     return Padding(
       padding: const EdgeInsets.all(18.0),
-      child: _isEditModeEnabled ? _buildInputDescriptuion() : _buildMarkdownDescription(),
+      child: _isEditModeEnabled ? _buildInputDescription() : _buildMarkdownDescription(),
     );
   }
 
-  TextField _buildInputDescriptuion() {
+  TextField _buildInputDescription() {
     return TextField(
       expands: true,
       maxLines: null,
@@ -263,7 +263,7 @@ class _RecipeViewState extends State<RecipeView> {
       focusNode: _detailsTextFocus,
       style: cRecipeDescriptionStyle,
       enableInteractiveSelection: true,
-      toolbarOptions: ToolbarOptions(
+      toolbarOptions: const ToolbarOptions(
         copy: true,
         cut: true,
         paste: true,
@@ -276,7 +276,7 @@ class _RecipeViewState extends State<RecipeView> {
     return MarkdownBody(
       data: _controller2.text,
       selectable: true,
-      onTapLink: (text, href, title) => null,
+      onTapLink: (text, href, title) => {},
       imageBuilder: (uri, title, alt) => Container(),
       // styleSheet: CustomMarkdownStyle(),
     );
@@ -333,7 +333,7 @@ class _RecipeViewState extends State<RecipeView> {
 
     List<Widget> _remoteDownloadAction = [
       IconButton(
-        icon: Icon(Icons.save_alt_rounded),
+        icon: const Icon(Icons.save_alt_rounded),
         onPressed: () {
           downloadRecipe(context, recipe);
         },
@@ -341,7 +341,7 @@ class _RecipeViewState extends State<RecipeView> {
     ];
 
     List<Widget> _remoteLookupAction = [
-      IconButton(
+      const IconButton(
         icon: Icon(Icons.menu_open_rounded),
         onPressed: null,
       ),
@@ -361,7 +361,7 @@ class _RecipeViewState extends State<RecipeView> {
     return AppBar(
       title: Text(_title),
       leading: IconButton(
-        icon: Icon(Icons.close),
+        icon: const Icon(Icons.close),
         onPressed: () {
           Navigator.pop(context);
         },
@@ -373,12 +373,12 @@ class _RecipeViewState extends State<RecipeView> {
   Widget _buildAppBarCheckActions() {
     if (_isEditModeEnabled) {
       return IconButton(
-        icon: Icon(Icons.check),
+        icon: const Icon(Icons.check),
         onPressed: _addRecipe,
       );
     } else {
       return IconButton(
-        icon: Icon(Icons.edit),
+        icon: const Icon(Icons.edit),
         onPressed: () {
           _isEditModeEnabled = true;
 
diff --git a/lib/views/settings_view.dart b/lib/views/settings_view.dart
index 367c1a6..7268acf 100644
--- a/lib/views/settings_view.dart
+++ b/lib/views/settings_view.dart
@@ -12,10 +12,10 @@ class SettingsView extends StatefulWidget {
   const SettingsView({Key? key}) : super(key: key);
 
   @override
-  _SettingsViewState createState() => _SettingsViewState();
+  SettingsViewState createState() => SettingsViewState();
 }
 
-class _SettingsViewState extends State<SettingsView> {
+class SettingsViewState extends State<SettingsView> {
   final TextEditingController _controller = TextEditingController();
   final FocusNode _focusNode = FocusNode();
 
@@ -29,7 +29,7 @@ class _SettingsViewState extends State<SettingsView> {
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(title: Text(AppLocalizations.of(context)!.category8)),
-      drawer: CustomDrawer(initalIndex: 5),
+      drawer: const CustomDrawer(initialIndex: 5),
       body: Builder(
         builder: (BuildContext context) => ListView(
           children: [
@@ -54,7 +54,7 @@ class _SettingsViewState extends State<SettingsView> {
             ListTile(
               title: Text(AppLocalizations.of(context)!.setting22, style: cDefaultTextStyle),
               subtitle: Text(AppLocalizations.of(context)!.explanation3, style: cDetailsTextStyle),
-              trailing: IconButton(
+              trailing: const IconButton(
                 icon: Icon(Icons.arrow_forward_rounded),
                 onPressed: null,
               ),
@@ -134,12 +134,12 @@ class _SettingsViewState extends State<SettingsView> {
       value: int.parse(SettingsData.settings["photoSource"]!),
       items: [
         DropdownMenuItem(
-          child: Text(AppLocalizations.of(context)!.option111, style: cOptionTextStyle),
           value: 0,
+          child: Text(AppLocalizations.of(context)!.option111, style: cOptionTextStyle),
         ),
         DropdownMenuItem(
-          child: Text(AppLocalizations.of(context)!.option112, style: cOptionTextStyle),
           value: 1,
+          child: Text(AppLocalizations.of(context)!.option112, style: cOptionTextStyle),
         ),
       ],
       onChanged: (value) {
@@ -156,20 +156,20 @@ class _SettingsViewState extends State<SettingsView> {
       value: int.parse(SettingsData.settings["showPhotos"]!),
       items: [
         DropdownMenuItem(
-          child: Text(AppLocalizations.of(context)!.option211, style: cOptionTextStyle),
           value: 0,
+          child: Text(AppLocalizations.of(context)!.option211, style: cOptionTextStyle),
         ),
         DropdownMenuItem(
-          child: Text(AppLocalizations.of(context)!.option212, style: cOptionTextStyle),
           value: 1,
+          child: Text(AppLocalizations.of(context)!.option212, style: cOptionTextStyle),
         ),
         DropdownMenuItem(
-          child: Text(AppLocalizations.of(context)!.option213, style: cOptionTextStyle),
           value: 2,
+          child: Text(AppLocalizations.of(context)!.option213, style: cOptionTextStyle),
         ),
         DropdownMenuItem(
-          child: Text(AppLocalizations.of(context)!.option214, style: cOptionTextStyle),
           value: 3,
+          child: Text(AppLocalizations.of(context)!.option214, style: cOptionTextStyle),
         ),
       ],
       onChanged: (value) {
diff --git a/lib/views/shoplist_view.dart b/lib/views/shoplist_view.dart
index 500b8fc..e13ef21 100644
--- a/lib/views/shoplist_view.dart
+++ b/lib/views/shoplist_view.dart
@@ -14,10 +14,10 @@ class ShoplistView extends StatefulWidget {
   const ShoplistView({Key? key}) : super(key: key);
 
   @override
-  _ShoplistView createState() => _ShoplistView();
+  ShoplistViewState createState() => ShoplistViewState();
 }
 
-class _ShoplistView extends State<ShoplistView> {
+class ShoplistViewState extends State<ShoplistView> {
   final FocusNode _focusNode = FocusNode();
   final TextEditingController _controller = TextEditingController();
   final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
@@ -30,7 +30,7 @@ class _ShoplistView extends State<ShoplistView> {
     return Scaffold(
       key: _scaffoldKey,
       appBar: AppBar(title: Text(AppLocalizations.of(context)!.category7)),
-      drawer: CustomDrawer(initalIndex: 4),
+      drawer: const CustomDrawer(initialIndex: 4),
       floatingActionButton: _buildFloatingActionButton(),
       body: _buildAnimatedList(),
     );
@@ -54,14 +54,14 @@ class _ShoplistView extends State<ShoplistView> {
 
   // TODO: FIXME: Sometimes exception "cant call insertItem of null" is thrown when first item is added or last is removed
   Widget _buildAnimatedList() {
-    if (ShoplistData.shoplist.length == 0) return NoContentError();
+    if (ShoplistData.shoplist.isEmpty) return const NoContentError();
 
     return AnimatedList(
       key: _listKey,
       initialItemCount: ShoplistData.shoplist.length,
       itemBuilder: (BuildContext context, int index, Animation<double> animation) {
         return SlideTransition(
-          position: animation.drive(Tween(begin: Offset(1.0, 0.0), end: Offset(0.0, 0.0))),
+          position: animation.drive(Tween(begin: const Offset(1.0, 0.0), end: const Offset(0.0, 0.0))),
           child: Dismissible(
             key: Key(_getUniqueKeyString(ShoplistData.shoplist[index])),
             background: _buildDimissibleBackground(true),
diff --git a/lib/views/vote_view.dart b/lib/views/vote_view.dart
index 86ddc0b..9c5721e 100644
--- a/lib/views/vote_view.dart
+++ b/lib/views/vote_view.dart
@@ -9,16 +9,16 @@ class VoteView extends StatefulWidget {
   const VoteView({Key? key}) : super(key: key);
 
   @override
-  _VoteViewState createState() => _VoteViewState();
+  VoteViewState createState() => VoteViewState();
 }
 
-class _VoteViewState extends State<VoteView> {
+class VoteViewState extends State<VoteView> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(title: Text(AppLocalizations.of(context)!.category6)),
-      drawer: CustomDrawer(initalIndex: 3),
-      body: NoContentError(),
+      drawer: const CustomDrawer(initialIndex: 3),
+      body: const NoContentError(),
     );
   }
 }
diff --git a/lib/views/week_view.dart b/lib/views/week_view.dart
index 23d71b8..de6ebcf 100644
--- a/lib/views/week_view.dart
+++ b/lib/views/week_view.dart
@@ -1,12 +1,7 @@
-import 'dart:convert';
-
 import 'package:flutter/material.dart';
 
-import 'package:kulinar_app/models/recipe_class.dart';
 import 'package:kulinar_app/widgets/error_widgets.dart';
-import 'package:kulinar_app/widgets/recipe_card_widget.dart';
 import 'package:kulinar_app/widgets/custom_drawer_widget.dart';
-import 'package:kulinar_app/models/data/recipe_data_class.dart';
 import 'package:kulinar_app/models/data/settings_data_class.dart';
 
 import 'package:http/http.dart';
@@ -16,19 +11,19 @@ class WeekView extends StatefulWidget {
   const WeekView({Key? key}) : super(key: key);
 
   @override
-  _WeekViewState createState() => _WeekViewState();
+  WeekViewState createState() => WeekViewState();
 }
 
-class _WeekViewState extends State<WeekView> {
+class WeekViewState extends State<WeekView> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(title: Text(AppLocalizations.of(context)!.category5)),
-      drawer: CustomDrawer(initalIndex: 2),
+      drawer: const CustomDrawer(initialIndex: 2),
       body: FutureBuilder(
         future: _getWeeklyRecipes(),
         builder: (BuildContext context, AsyncSnapshot snapshot) {
-          if (snapshot.connectionState != ConnectionState.done) return LinearProgressIndicator();
+          if (snapshot.connectionState != ConnectionState.done) return const LinearProgressIndicator();
           if (snapshot.hasError || !snapshot.hasData) return NetworkContentError(refreshCallback: _retry);
 
           return RefreshIndicator(
@@ -36,7 +31,7 @@ class _WeekViewState extends State<WeekView> {
               setState(() {});
             },
             child: ListView(
-              children: [
+              children: const [
                 Text("Not implemented"), // TODO: Not implemented
               ],
             ),
@@ -50,21 +45,19 @@ class _WeekViewState extends State<WeekView> {
     Map<String, String> _headers = {"Content-Type": "application/json; charset=UTF-8"};
 
     try {
-      return await Future.delayed(Duration(milliseconds: 500), () {
-        print(SettingsData.settings["serverURL"]);
+      return await Future.delayed(const Duration(milliseconds: 500), () {
+        debugPrint("${SettingsData.settings['serverURL']}");
         return get(Uri.https(SettingsData.settings["serverURL"]!, "/weekly"), headers: _headers);
       });
     } catch (e) {
-      print(e);
+      debugPrint("$e");
       return null;
     }
   }
 
-  Future<Null> _retry() async {
-    await Future.delayed(Duration(milliseconds: 300));
+  Future<void> _retry() async {
+    await Future.delayed(const Duration(milliseconds: 300));
 
     setState(() {});
-
-    return null;
   }
 }
diff --git a/lib/widgets/custom_drawer_widget.dart b/lib/widgets/custom_drawer_widget.dart
index 3fd8c2e..671ff70 100644
--- a/lib/widgets/custom_drawer_widget.dart
+++ b/lib/widgets/custom_drawer_widget.dart
@@ -14,21 +14,21 @@ import 'package:kulinar_app/widgets/page_route_transitions.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 
 class CustomDrawer extends StatefulWidget {
-  CustomDrawer({Key? key, required this.initalIndex}) : super(key: key);
+  const CustomDrawer({Key? key, required this.initialIndex}) : super(key: key);
 
-  final int initalIndex;
+  final int initialIndex;
 
   @override
-  _CustomDrawerState createState() => _CustomDrawerState();
+  CustomDrawerState createState() => CustomDrawerState();
 }
 
-class _CustomDrawerState extends State<CustomDrawer> {
+class CustomDrawerState extends State<CustomDrawer> {
   int? _index;
 
   @override
   void initState() {
     super.initState();
-    _index = widget.initalIndex;
+    _index = widget.initialIndex;
   }
 
   @override
@@ -46,28 +46,28 @@ class _CustomDrawerState extends State<CustomDrawer> {
               children: [
                 _buildDrawerHeader(),
                 _buildDrawerItem(0, Icons.receipt_rounded, AppLocalizations.of(context)!.category1, () {
-                  _navigateTo(MainView(), 0);
+                  _navigateTo(const MainView(), 0);
                 }),
                 _buildDrawerItem(1, Icons.favorite_rounded, AppLocalizations.of(context)!.category4, () {
-                  _navigateTo(FavoritesView(), 1);
+                  _navigateTo(const FavoritesView(), 1);
                 }),
                 _buildDrawerItem(2, Icons.calendar_today_rounded, AppLocalizations.of(context)!.category5, () {
-                  _navigateTo(WeekView(), 2);
+                  _navigateTo(const WeekView(), 2);
                 }),
                 _buildDrawerItem(3, Icons.how_to_vote_rounded, AppLocalizations.of(context)!.category6, () {
-                  _navigateTo(VoteView(), 3);
+                  _navigateTo(const VoteView(), 3);
                 }),
                 _buildDrawerItem(4, Icons.shopping_cart_rounded, AppLocalizations.of(context)!.category7, () {
-                  _navigateTo(ShoplistView(), 4);
+                  _navigateTo(const ShoplistView(), 4);
                 }),
               ],
             ),
           ),
           _buildDrawerItem(5, Icons.settings_rounded, AppLocalizations.of(context)!.category8, () {
-            _navigateTo(SettingsView(), 5);
+            _navigateTo(const SettingsView(), 5);
           }),
           _buildDrawerItem(6, Icons.info_rounded, AppLocalizations.of(context)!.category9, () {
-            _navigateTo(InfoView(), 6);
+            _navigateTo(const InfoView(), 6);
           }),
         ],
       ),
@@ -75,16 +75,17 @@ class _CustomDrawerState extends State<CustomDrawer> {
   }
 
   Widget _buildDrawerHeader() {
-    return SizedBox(
+    return const SizedBox(
       width: double.infinity,
       child: DrawerHeader(
         margin: EdgeInsets.zero,
+        decoration: BoxDecoration(color: cPrimaryColor),
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.center,
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
             Padding(
-              padding: const EdgeInsets.only(bottom: 12.0),
+              padding: EdgeInsets.only(bottom: 12.0),
               child: Icon(
                 Icons.restaurant_menu_rounded,
                 color: cIconColor,
@@ -93,7 +94,6 @@ class _CustomDrawerState extends State<CustomDrawer> {
             ),
           ],
         ),
-        decoration: BoxDecoration(color: cPrimaryColor),
       ),
     );
   }
diff --git a/lib/widgets/custom_markdown_style.dart b/lib/widgets/custom_markdown_style.dart
index 8a1c421..41173f5 100644
--- a/lib/widgets/custom_markdown_style.dart
+++ b/lib/widgets/custom_markdown_style.dart
@@ -5,23 +5,23 @@ import 'package:kulinar_app/constants.dart';
 import 'package:flutter_markdown/flutter_markdown.dart';
 
 class CustomMarkdownStyle extends MarkdownStyleSheet {
-  MarkdownStyleSheet({
-    tableBody: cRecipeDescriptionStyle,
-    a: cRecipeDescriptionStyle,
-    p: cRecipeDescriptionStyle,
-    h1: cRecipeSubtitleStyle,
-    h2: cRecipeSubtitleStyle,
-    h3: cRecipeSubtitleStyle,
-    h4: cRecipeSubtitleStyle,
-    h5: cRecipeSubtitleStyle,
-    h6: cRecipeSubtitleStyle,
+  markdownStyleSheet({
+    tableBody = cRecipeDescriptionStyle,
+    a = cRecipeDescriptionStyle,
+    p = cRecipeDescriptionStyle,
+    h1 = cRecipeSubtitleStyle,
+    h2 = cRecipeSubtitleStyle,
+    h3 = cRecipeSubtitleStyle,
+    h4 = cRecipeSubtitleStyle,
+    h5 = cRecipeSubtitleStyle,
+    h6 = cRecipeSubtitleStyle,
 /*      TODO: remove code and quote block
         blockquoteDecoration: BoxDecoration(color: Color.fromARGB(255, 255, 13, 13)),
         code: cDetailsTextStyle,
 */
-    listIndent: 15.0,
-    listBullet: cRecipeDescriptionStyle,
-    listBulletPadding: const EdgeInsets.only(right: 10.0),
+    listIndent = 15.0,
+    listBullet = cRecipeDescriptionStyle,
+    listBulletPadding = const EdgeInsets.only(right: 10.0),
     // horizontalRuleDecoration: BoxDecoration(border: Border.all(color: Colors.grey, width: 0.5)),
   }) {}
 }
diff --git a/lib/widgets/error_widgets.dart b/lib/widgets/error_widgets.dart
index 52ac0bb..e17e409 100644
--- a/lib/widgets/error_widgets.dart
+++ b/lib/widgets/error_widgets.dart
@@ -14,7 +14,7 @@ class NoContentError extends StatelessWidget {
       child: Column(
         mainAxisAlignment: MainAxisAlignment.center,
         children: [
-          Icon(
+          const Icon(
             Icons.sentiment_dissatisfied_rounded,
             size: 100,
           ),
@@ -42,7 +42,7 @@ class NetworkContentError extends StatelessWidget {
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
-            Icon(
+            const Icon(
               Icons.signal_wifi_off_rounded,
               size: 100,
             ),
@@ -81,7 +81,7 @@ class UnknownError extends StatelessWidget {
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
-            Icon(
+            const Icon(
               Icons.warning_amber_rounded,
               size: 100,
             ),
diff --git a/lib/widgets/page_route_transitions.dart b/lib/widgets/page_route_transitions.dart
index 8491555..a4dc061 100644
--- a/lib/widgets/page_route_transitions.dart
+++ b/lib/widgets/page_route_transitions.dart
@@ -5,13 +5,13 @@ class SlideFromLeftRoute extends PageRouteBuilder {
 
   SlideFromLeftRoute({required this.child})
       : super(
-          transitionDuration: Duration(milliseconds: 300),
+          transitionDuration: const Duration(milliseconds: 300),
           pageBuilder: (BuildContext _, Animation<double> __, Animation<double> ___) => child,
           transitionsBuilder: (BuildContext _, Animation<double> animation, Animation<double> __, Widget child) => SlideTransition(
             position: Tween<Offset>(
-              begin: Offset(-1, 0),
+              begin: const Offset(-1, 0),
               end: Offset.zero,
-            ).animate(CurvedAnimation(parent: animation, curve: Interval(0.00, 1.00, curve: Curves.ease))),
+            ).animate(CurvedAnimation(parent: animation, curve: const Interval(0.00, 1.00, curve: Curves.ease))),
             child: child,
           ),
         );
@@ -22,13 +22,13 @@ class SlideFromRightRoute extends PageRouteBuilder {
 
   SlideFromRightRoute({required this.child})
       : super(
-          transitionDuration: Duration(milliseconds: 300),
+          transitionDuration: const Duration(milliseconds: 300),
           pageBuilder: (BuildContext _, Animation<double> __, Animation<double> ___) => child,
           transitionsBuilder: (BuildContext _, Animation<double> animation, Animation<double> __, Widget child) => SlideTransition(
             position: Tween<Offset>(
-              begin: Offset(1, 0),
+              begin: const Offset(1, 0),
               end: Offset.zero,
-            ).animate(CurvedAnimation(parent: animation, curve: Interval(0.00, 1.00, curve: Curves.ease))),
+            ).animate(CurvedAnimation(parent: animation, curve: const Interval(0.00, 1.00, curve: Curves.ease))),
             child: child,
           ),
         );
@@ -39,13 +39,13 @@ class SlideFromBottomRoute extends PageRouteBuilder {
 
   SlideFromBottomRoute({required this.child})
       : super(
-          transitionDuration: Duration(milliseconds: 300),
+          transitionDuration: const Duration(milliseconds: 300),
           pageBuilder: (BuildContext _, Animation<double> __, Animation<double> ___) => child,
           transitionsBuilder: (BuildContext _, Animation<double> animation, Animation<double> __, Widget child) => SlideTransition(
             position: Tween<Offset>(
-              begin: Offset(0, 1),
+              begin: const Offset(0, 1),
               end: Offset.zero,
-            ).animate(CurvedAnimation(parent: animation, curve: Interval(0.00, 1.00, curve: Curves.ease))),
+            ).animate(CurvedAnimation(parent: animation, curve: const Interval(0.00, 1.00, curve: Curves.ease))),
             child: child,
           ),
         );
@@ -56,7 +56,7 @@ class FadeRoute extends PageRouteBuilder {
 
   FadeRoute({required this.child})
       : super(
-          transitionDuration: Duration(milliseconds: 300),
+          transitionDuration: const Duration(milliseconds: 300),
           pageBuilder: (BuildContext _, Animation<double> animation, Animation<double> __) => FadeTransition(
             opacity: animation,
             child: child,
diff --git a/lib/widgets/recipe_card_widget.dart b/lib/widgets/recipe_card_widget.dart
index 4828b9a..a3db5f7 100644
--- a/lib/widgets/recipe_card_widget.dart
+++ b/lib/widgets/recipe_card_widget.dart
@@ -19,10 +19,10 @@ class RecipeCard extends StatefulWidget {
   final Function? showToastCallback;
 
   @override
-  _RecipeCardState createState() => _RecipeCardState();
+  RecipeCardState createState() => RecipeCardState();
 }
 
-class _RecipeCardState extends State<RecipeCard> {
+class RecipeCardState extends State<RecipeCard> {
   @override
   void dispose() {
     super.dispose();
@@ -68,7 +68,7 @@ class _RecipeCardState extends State<RecipeCard> {
 
       widget.redrawCallback!();
     } catch (e) {
-      print(e);
+      debugPrint("$e");
     }
   }
 
@@ -97,7 +97,7 @@ class _RecipeCardState extends State<RecipeCard> {
 }
 
 class _RecipeInfo extends StatefulWidget {
-  _RecipeInfo({Key? key, required this.recipe}) : super(key: key);
+  const _RecipeInfo({Key? key, required this.recipe}) : super(key: key);
 
   final Recipe recipe;
 
@@ -112,7 +112,7 @@ class _RecipeInfoState extends State<_RecipeInfo> {
       mainAxisAlignment: MainAxisAlignment.spaceBetween,
       children: [
         _buildRecipeInfo(),
-        _buildFavortiteIcon(),
+        _buildFavoriteIcon(),
       ],
     );
   }
@@ -123,7 +123,7 @@ class _RecipeInfoState extends State<_RecipeInfo> {
     if (rating == 0) return _result;
 
     for (int i = 0; i < 5; i++) {
-      _result.add(rating >= 1 ? Icon(Icons.star_rounded) : Icon(Icons.star_border_rounded));
+      _result.add(rating >= 1 ? const Icon(Icons.star_rounded) : const Icon(Icons.star_border_rounded));
       rating--;
     }
 
@@ -163,9 +163,9 @@ class _RecipeInfoState extends State<_RecipeInfo> {
     );
   }
 
-  Widget _buildFavortiteIcon() {
+  Widget _buildFavoriteIcon() {
     return IconButton(
-      icon: widget.recipe.favorite ? Icon(Icons.favorite_rounded, color: Colors.red) : Icon(Icons.favorite_border_rounded),
+      icon: widget.recipe.favorite ? const Icon(Icons.favorite_rounded, color: Colors.red) : const Icon(Icons.favorite_border_rounded),
       onPressed: () {
         widget.recipe.toggleFavorite();
         RecipeData.save();
diff --git a/lib/widgets/recipe_search_delegate.dart b/lib/widgets/recipe_search_delegate.dart
index 1cb02e7..cd58b29 100644
--- a/lib/widgets/recipe_search_delegate.dart
+++ b/lib/widgets/recipe_search_delegate.dart
@@ -10,7 +10,7 @@ class RecipeSearch extends SearchDelegate {
   List<Widget> buildActions(BuildContext context) {
     return [
       IconButton(
-        icon: Icon(Icons.clear),
+        icon: const Icon(Icons.clear),
         onPressed: () {
           query = "";
         },
@@ -21,7 +21,7 @@ class RecipeSearch extends SearchDelegate {
   @override
   Widget buildLeading(BuildContext context) {
     return IconButton(
-      icon: Icon(Icons.arrow_back, color: cIconColor),
+      icon: const Icon(Icons.arrow_back, color: cIconColor),
       onPressed: () {
         close(context, null);
       },
@@ -51,7 +51,7 @@ class RecipeSearch extends SearchDelegate {
   @override
   ThemeData appBarTheme(BuildContext context) {
     return Theme.of(context).copyWith(
-      textTheme: TextTheme(
+      textTheme: const TextTheme(
         headline6: cSearchTextStyle,
       ),
     );
@@ -63,7 +63,7 @@ class FavoriteRecipeSearch extends SearchDelegate {
   List<Widget> buildActions(BuildContext context) {
     return [
       IconButton(
-        icon: Icon(Icons.clear),
+        icon: const Icon(Icons.clear),
         onPressed: () {
           query = "";
         },
@@ -74,7 +74,7 @@ class FavoriteRecipeSearch extends SearchDelegate {
   @override
   Widget buildLeading(BuildContext context) {
     return IconButton(
-      icon: Icon(Icons.arrow_back, color: cIconColor),
+      icon: const Icon(Icons.arrow_back, color: cIconColor),
       onPressed: () {
         close(context, null);
       },
@@ -104,7 +104,7 @@ class FavoriteRecipeSearch extends SearchDelegate {
   @override
   ThemeData appBarTheme(BuildContext context) {
     return Theme.of(context).copyWith(
-      textTheme: TextTheme(
+      textTheme: const TextTheme(
         headline6: cSearchTextStyle,
       ),
     );
diff --git a/lib/widgets/toastbar_widget.dart b/lib/widgets/toastbar_widget.dart
index 760ce2e..35068df 100644
--- a/lib/widgets/toastbar_widget.dart
+++ b/lib/widgets/toastbar_widget.dart
@@ -13,11 +13,11 @@ class ToastBar {
           : null,
       backgroundColor: error == true ? Colors.red : Colors.grey[900],
       behavior: SnackBarBehavior.floating,
-      duration: Duration(seconds: 5),
+      duration: const Duration(seconds: 5),
       elevation: 5.0,
       content: Text(
         content,
-        style: TextStyle(color: Colors.white),
+        style: const TextStyle(color: Colors.white),
         overflow: TextOverflow.ellipsis,
       ),
     );
diff --git a/lib/widgets/utility_icon_row_widget.dart b/lib/widgets/utility_icon_row_widget.dart
index 158110a..224823f 100644
--- a/lib/widgets/utility_icon_row_widget.dart
+++ b/lib/widgets/utility_icon_row_widget.dart
@@ -28,10 +28,10 @@ class UtilityIconRow extends StatefulWidget {
   final Function cacheUnsavedRecipeCallback;
 
   @override
-  _UtilityIconRowState createState() => _UtilityIconRowState();
+  UtilityIconRowState createState() => UtilityIconRowState();
 }
 
-class _UtilityIconRowState extends State<UtilityIconRow> {
+class UtilityIconRowState extends State<UtilityIconRow> {
   bool _isInputSourceCamera = SettingsData.settings["photoSource"] == "0" ? true : false;
 
   @override
@@ -69,11 +69,11 @@ class _UtilityIconRowState extends State<UtilityIconRow> {
     bool _recipeHasImage = widget.unsavedRecipe.image == null;
 
     if (_isInputSourceCamera) {
-      _pickImageIcon = Icon(Icons.add_a_photo_rounded);
-      _removeImageIcon = Icon(Icons.no_photography_rounded);
+      _pickImageIcon = const Icon(Icons.add_a_photo_rounded);
+      _removeImageIcon = const Icon(Icons.no_photography_rounded);
     } else {
-      _pickImageIcon = Icon(Icons.add_photo_alternate_rounded);
-      _removeImageIcon = Icon(Icons.image_not_supported_rounded);
+      _pickImageIcon = const Icon(Icons.add_photo_alternate_rounded);
+      _removeImageIcon = const Icon(Icons.image_not_supported_rounded);
     }
 
     void _onPress() {
@@ -107,7 +107,7 @@ class _UtilityIconRowState extends State<UtilityIconRow> {
         ),
         IconButton(
           iconSize: 28.0,
-          icon: Icon(Icons.star_border_rounded),
+          icon: const Icon(Icons.star_border_rounded),
           onPressed: !widget.remote ? _onPress : null,
         ),
       ],
@@ -115,11 +115,11 @@ class _UtilityIconRowState extends State<UtilityIconRow> {
   }
 
   Widget _buildIconFavorite() {
-    Icon icon = Icon(Icons.favorite_border_rounded);
+    Icon icon = const Icon(Icons.favorite_border_rounded);
     Color color = Colors.black;
 
     if (widget.unsavedRecipe.favorite) {
-      icon = Icon(Icons.favorite_rounded);
+      icon = const Icon(Icons.favorite_rounded);
       color = Colors.red;
     }