feat: Add "View app source" drawer item

Author: TechAurelian

lib/common/app_strings.dart

@@ -14,10 +14,9 @@ class AppStrings {
 
   static const String drawerTitle = appName;
   static const String settingsItemTitle = 'Settings';
-  static const String helpItemTitle = 'Help & feedback';
+  static const String helpItemTitle = 'Online Help';
   static const String rateItemTitle = 'Rate app';
-
-  //#region Menu items and functionality
+  static const String viewSourceItemTitle = 'View app source';
 
   static const Map<MenuAction, String> menuActions = {
     MenuAction.reset: 'Reset counter',
@@ -35,7 +34,7 @@ class AppStrings {
 
   static const String helpURL = 'https://techaurelian.com/helloworldcounters/';
 
-  //#endregion
+  static const String viewSourceURL = 'https://techaurelian.com/helloworldcounters/view-source/';
 
   // -----------------------------------------------------------------------------------------------
   // Home Screen - Main

lib/screens/home.dart

@@ -89,6 +89,10 @@ class _HomeScreenState extends State<HomeScreen> {
         // Launch the Google Play Store page to allow the user to rate the app
         launchUrlExternal(context, AppStrings.rateAppURL);
         break;
+      case DrawerExtraActions.viewSource:
+        // Launch the app source code repo url
+        launchUrlExternal(context, AppStrings.viewSourceURL);
+        break;
     }
   }
 

lib/widgets/counters_drawer.dart

@@ -10,7 +10,7 @@ import '../utils/utils.dart';
 import 'color_list_tile.dart';
 
 /// Drawer extra actions enumeration.
-enum DrawerExtraActions { settings, help, rate }
+enum DrawerExtraActions { settings, help, rate, viewSource }
 
 /// A material design drawer that shows navigation links for all available counters.
 class CountersDrawer extends StatelessWidget {
@@ -65,6 +65,12 @@ class CountersDrawer extends StatelessWidget {
               title: const Text(AppStrings.rateItemTitle),
               onTap: () => _onExtraActionTap(context, DrawerExtraActions.rate),
             ),
+            const Divider(),
+            ListTile(
+              leading: const Icon(Icons.code),
+              title: const Text(AppStrings.viewSourceItemTitle),
+              onTap: () => _onExtraActionTap(context, DrawerExtraActions.viewSource),
+            ),
           ],
         ),
       ),