fix(refactor): description in topic list screen handling, and add various loading handling widget

lib/core/services/constants.dart

@@ -1 +1 @@
-const String baseUrl = 'https://7333-114-6-25-184.ngrok-free.app/';
+const String baseUrl = 'http://54.173.167.62/';

lib/core/widgets/loading/shimmer_loading_widget.dart

@@ -0,0 +1,37 @@
+import 'package:flutter/material.dart';
+import 'package:shimmer/shimmer.dart';
+
+class ShimmerLoadingWidget extends StatelessWidget {
+  final double width;
+  final double height;
+  final BorderRadius? borderRadius;
+  final EdgeInsets? padding;
+
+  const ShimmerLoadingWidget({
+    super.key,
+    required this.width,
+    required this.height,
+    this.borderRadius,
+    this.padding,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: padding ?? EdgeInsets.zero,
+      child: Shimmer.fromColors(
+        baseColor: Colors.grey[300]!,
+        highlightColor: Colors.grey[100]!,
+        period: const Duration(milliseconds: 1500),
+        child: Container(
+          width: width,
+          height: height,
+          decoration: BoxDecoration(
+            color: Colors.white,
+            borderRadius: borderRadius ?? BorderRadius.circular(8),
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/features/home/screens/home_screen.dart

@@ -7,6 +7,7 @@ import 'package:english_learning/features/history/screens/history_screen.dart';
 import 'package:english_learning/features/home/data/card_data.dart';
 import 'package:english_learning/features/home/provider/completed_topics_provider.dart';
 import 'package:english_learning/features/home/widgets/progress_card.dart';
+import 'package:english_learning/features/home/widgets/progress_card_loading.dart';
 import 'package:english_learning/features/home/widgets/welcome_card.dart';
 import 'package:english_learning/features/learning/screens/learning_screen.dart';
 import 'package:english_learning/features/settings/modules/edit_profile/screens/edit_profile_screen.dart';
@@ -17,7 +18,6 @@ import 'package:flutter/material.dart';
 import 'package:flutter_svg/flutter_svg.dart';
 import 'package:google_nav_bar/google_nav_bar.dart';
 import 'package:provider/provider.dart';
-import 'package:shimmer/shimmer.dart';
 
 class HomeScreen extends StatefulWidget {
   const HomeScreen({super.key});
@@ -203,31 +203,6 @@ class _HomeContentState extends State<HomeContent> {
     );
   }
 
-  Widget _buildShimmerEffect() {
-    return Padding(
-      padding: const EdgeInsets.symmetric(horizontal: 24.0),
-      child: Shimmer.fromColors(
-        baseColor: Colors.grey[300]!,
-        highlightColor: Colors.grey[100]!,
-        child: Column(
-          children: List.generate(
-              2,
-              (index) => Padding(
-                    padding: const EdgeInsets.only(bottom: 16.0),
-                    child: Container(
-                      width: double.infinity,
-                      height: 150,
-                      decoration: BoxDecoration(
-                        color: Colors.white,
-                        borderRadius: BorderRadius.circular(12),
-                      ),
-                    ),
-                  )),
-        ),
-      ),
-    );
-  }
-
   Widget _buildCompletedTopicsContent(CompletedTopicsProvider provider) {
     return ListView.builder(
       shrinkWrap: true,
@@ -438,7 +413,7 @@ class _HomeContentState extends State<HomeContent> {
                       ),
                     ),
                     completedTopicsProvider.isLoading
-                        ? _buildShimmerEffect()
+                        ? const ProgressCardLoading()
                         : completedTopicsProvider.completedTopics.isEmpty
                             ? _buildNoDataWidget()
                             : _buildCompletedTopicsContent(

lib/features/home/widgets/progress_card_loading.dart

@@ -0,0 +1,26 @@
+import 'package:english_learning/core/widgets/loading/shimmer_loading_widget.dart';
+import 'package:flutter/material.dart';
+
+class ProgressCardLoading extends StatelessWidget {
+  const ProgressCardLoading({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      color: Colors.white,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(12),
+      ),
+      elevation: 0,
+      margin: const EdgeInsets.symmetric(vertical: 8.0),
+      child: Padding(
+        padding: const EdgeInsets.all(16.0),
+        child: ShimmerLoadingWidget(
+          width: double.infinity,
+          height: 160,
+          borderRadius: BorderRadius.circular(12),
+        ),
+      ),
+    );
+  }
+}

lib/features/learning/modules/topics/screens/topics_list_screen.dart

@@ -4,6 +4,7 @@ import 'package:english_learning/features/learning/modules/level/screens/level_l
 import 'package:english_learning/features/learning/modules/topics/providers/topic_provider.dart';
 import 'package:english_learning/features/learning/modules/topics/widgets/topic_card.dart';
 import 'package:english_learning/core/utils/styles/theme.dart';
+import 'package:english_learning/features/learning/modules/topics/widgets/topic_card_loading.dart';
 import 'package:english_learning/features/learning/provider/section_provider.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
@@ -53,6 +54,102 @@ class _TopicsListScreenState extends State<TopicsListScreen> {
     }
   }
 
+  // Tambahkan method baru di dalam _TopicsListScreenState
+  void _showSectionDescriptionDialog(BuildContext context, String description) {
+    showDialog(
+      context: context,
+      builder: (BuildContext context) {
+        return Dialog(
+          shape: RoundedRectangleBorder(
+            borderRadius: BorderRadius.circular(16),
+          ),
+          elevation: 0,
+          backgroundColor: Colors.transparent,
+          child: Container(
+            decoration: BoxDecoration(
+              borderRadius: BorderRadius.circular(16),
+              color: AppColors.whiteColor,
+              shape: BoxShape.rectangle,
+              boxShadow: const [
+                BoxShadow(
+                  color: Colors.black26,
+                  blurRadius: 10.0,
+                  offset: Offset(0.0, 10.0),
+                ),
+              ],
+            ),
+            child: Column(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                SizedBox(
+                  width: double.infinity,
+                  child: Container(
+                    padding: const EdgeInsets.symmetric(
+                        vertical: 16, horizontal: 16),
+                    decoration: const BoxDecoration(
+                      color: AppColors.blueColor,
+                      borderRadius: BorderRadius.only(
+                        topLeft: Radius.circular(16),
+                        topRight: Radius.circular(16),
+                      ),
+                    ),
+                    child: Center(
+                      child: Text(
+                        'Section Description',
+                        style: AppTextStyles.whiteTextStyle.copyWith(
+                          fontSize: 16,
+                          fontWeight: FontWeight.bold,
+                        ),
+                      ),
+                    ),
+                  ),
+                ),
+
+                // Content
+                Flexible(
+                  child: SingleChildScrollView(
+                    padding: const EdgeInsets.all(24),
+                    child: Text(
+                      description,
+                      style: AppTextStyles.greyTextStyle.copyWith(
+                        fontSize: 13,
+                        fontWeight: FontWeight.w300,
+                        height: 1.5,
+                      ),
+                      textAlign: TextAlign.justify,
+                    ),
+                  ),
+                ),
+                Padding(
+                  padding: const EdgeInsets.all(16),
+                  child: ElevatedButton.icon(
+                    style: ElevatedButton.styleFrom(
+                      backgroundColor: AppColors.primaryColor,
+                      shape: RoundedRectangleBorder(
+                        borderRadius: BorderRadius.circular(8),
+                      ),
+                      padding: const EdgeInsets.symmetric(
+                          vertical: 12, horizontal: 20),
+                    ),
+                    onPressed: () => Navigator.of(context).pop(),
+                    icon: const Icon(Icons.close, color: Colors.white),
+                    label: const Text(
+                      'Close',
+                      style: TextStyle(
+                        color: Colors.white,
+                        fontWeight: FontWeight.bold,
+                      ),
+                    ),
+                  ),
+                ),
+              ],
+            ),
+          ),
+        );
+      },
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
     final sectionProvider = Provider.of<SectionProvider>(context);
@@ -71,6 +168,7 @@ class _TopicsListScreenState extends State<TopicsListScreen> {
             fontSize: 14,
             fontWeight: FontWeight.w900,
           ),
+          textAlign: TextAlign.center,
         ),
         flexibleSpace: Container(
           decoration: BoxDecoration(
@@ -87,14 +185,13 @@ class _TopicsListScreenState extends State<TopicsListScreen> {
                 _getFullImageUrl(selectedSection.thumbnail ?? ''),
                 fit: BoxFit.cover,
                 width: double.infinity,
-                height: 115,
+                height: 140,
                 errorBuilder: (context, error, stackTrace) {
-                  print('Error loading image: $error');
                   return Container(
                     width: double.infinity,
-                    height: 115,
+                    height: 140,
                     color: Colors.grey[300],
-                    child: Icon(
+                    child: const Icon(
                       Icons.image_not_supported,
                       color: Colors.grey,
                     ),
@@ -112,12 +209,18 @@ class _TopicsListScreenState extends State<TopicsListScreen> {
               ),
               Container(
                 width: double.infinity,
-                height: 115,
+                height: 140,
-                color: AppColors.blackColor.withOpacity(0.5),
+                color: AppColors.blackColor.withOpacity(0.7),
               ),
               Center(
                 child: Padding(
-                  padding: const EdgeInsets.symmetric(vertical: 42.0),
+                  padding: const EdgeInsets.symmetric(vertical: 32.0),
+                  child: SingleChildScrollView(
+                    child: Column(
+                      mainAxisAlignment: MainAxisAlignment.center,
+                      children: [
+                        Padding(
+                          padding: const EdgeInsets.symmetric(horizontal: 8.0),
                           child: Text(
                             selectedSection.description,
                             style: AppTextStyles.whiteTextStyle.copyWith(
@@ -125,22 +228,82 @@ class _TopicsListScreenState extends State<TopicsListScreen> {
                               fontWeight: FontWeight.w500,
                             ),
                             textAlign: TextAlign.center,
+                            maxLines: 3,
+                            overflow: TextOverflow.ellipsis,
+                          ),
+                        ),
+                        const SizedBox(height: 8),
+                        GestureDetector(
+                          onTap: () => _showSectionDescriptionDialog(
+                              context, selectedSection.description),
+                          child: Container(
+                            padding: const EdgeInsets.symmetric(
+                                vertical: 8, horizontal: 16),
+                            decoration: BoxDecoration(
+                              color: Colors.white.withOpacity(0.2),
+                              borderRadius: BorderRadius.circular(8),
+                            ),
+                            child: Text(
+                              'Read More',
+                              style: AppTextStyles.whiteTextStyle.copyWith(
+                                fontSize: 12,
+                                fontWeight: FontWeight.bold,
+                                color: Colors.white.withOpacity(0.8),
+                                decoration: TextDecoration.underline,
+                                decorationColor: Colors.white.withOpacity(0.8),
+                              ),
                             ),
                           ),
                         ),
                       ],
                     ),
-          const SizedBox(height: 24),
+                  ),
+                ),
+              ),
+            ],
+          ),
+          // const SizedBox(height: 12),
           Expanded(
             child: Padding(
               padding: const EdgeInsets.symmetric(horizontal: 16.0),
               child: Consumer<TopicProvider>(
                 builder: (context, topicProvider, _) {
+                  if (topicProvider.isLoading) {
+                    return ListView.builder(
+                      padding: const EdgeInsets.only(top: 8),
+                      itemCount: 6,
+                      itemBuilder: (context, index) => const TopicCardLoading(),
+                    );
+                  }
+
+                  if (topicProvider.error != null) {
+                    return Center(
+                      child: Column(
+                        mainAxisAlignment: MainAxisAlignment.center,
+                        children: [
+                          Text(
+                            'Failed to load topics',
+                            style: AppTextStyles.greyTextStyle,
+                          ),
+                          const SizedBox(height: 16),
+                          ElevatedButton(
+                            onPressed: _fetchTopics,
+                            child: const Text('Retry'),
+                          ),
+                        ],
+                      ),
+                    );
+                  }
+
                   if (topicProvider.topics.isEmpty) {
-                    return const Center(child: CircularProgressIndicator());
+                    return Center(
-                  } else if (topicProvider.error != null) {
+                      child: Text(
-                    return const Center(child: Text('No topics available'));
+                        'No topics available',
-                  } else {
+                        style: AppTextStyles.greyTextStyle,
+                      ),
+                    );
+                  }
+
                   return ListView.builder(
                     itemCount: topicProvider.topics.length,
                     itemBuilder: (context, index) {
@@ -163,7 +326,6 @@ class _TopicsListScreenState extends State<TopicsListScreen> {
                       );
                     },
                   );
-                  }
                 },
               ),
             ),

lib/features/learning/modules/topics/widgets/topic_card.dart

@@ -6,12 +6,14 @@ class TopicCard extends StatelessWidget {
   final String description;
   final bool isCompleted;
   final VoidCallback? onTap;
+  final bool isLoading;
   const TopicCard({
     super.key,
     this.onTap,
     required this.title,
     required this.description,
     required this.isCompleted,
+    this.isLoading = false,
   });
 
   @override
@@ -52,7 +54,7 @@ class TopicCard extends StatelessWidget {
                           fontSize: 12,
                           fontWeight: FontWeight.w500,
                         ),
-                        maxLines: 4,
+                        maxLines: 3,
                         overflow: TextOverflow.ellipsis,
                       ),
                     ],
@@ -63,8 +65,7 @@ class TopicCard extends StatelessWidget {
                   isCompleted
                       ? Icons.check_circle
                       : Icons.radio_button_unchecked,
-                  color:
+                  color: AppColors.blueColor,
-                      isCompleted ? AppColors.blueColor : AppColors.greyColor,
                 ),
               ],
             ),

lib/features/learning/modules/topics/widgets/topic_card_loading.dart

@@ -0,0 +1,59 @@
+import 'package:english_learning/core/widgets/loading/shimmer_loading_widget.dart';
+import 'package:flutter/material.dart';
+
+class TopicCardLoading extends StatelessWidget {
+  const TopicCardLoading({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      color: Colors.white,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(12),
+      ),
+      elevation: 0,
+      margin: const EdgeInsets.symmetric(vertical: 8.0),
+      child: Padding(
+        padding: const EdgeInsets.all(16.0),
+        child: Row(
+          children: [
+            Expanded(
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  // Title shimmer
+                  ShimmerLoadingWidget(
+                    width: double.infinity,
+                    height: 16,
+                    borderRadius: BorderRadius.circular(4),
+                  ),
+                  const SizedBox(height: 12),
+                  // First line of description
+                  ShimmerLoadingWidget(
+                    width: double.infinity,
+                    height: 12,
+                    borderRadius: BorderRadius.circular(4),
+                    padding: const EdgeInsets.only(bottom: 8),
+                  ),
+                  // Second line of description (shorter)
+                  ShimmerLoadingWidget(
+                    width: MediaQuery.of(context).size.width * 0.6,
+                    height: 12,
+                    borderRadius: BorderRadius.circular(4),
+                  ),
+                ],
+              ),
+            ),
+            const SizedBox(width: 16),
+            // Completion status icon shimmer
+            ShimmerLoadingWidget(
+              width: 24,
+              height: 24,
+              borderRadius: BorderRadius.circular(12), // Make it circular
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/features/learning/screens/learning_screen.dart

@@ -2,7 +2,7 @@ import 'package:english_learning/features/auth/provider/user_provider.dart';
 import 'package:english_learning/features/learning/provider/section_provider.dart';
 import 'package:english_learning/features/learning/widgets/section_card.dart';
 import 'package:english_learning/features/learning/modules/topics/screens/topics_list_screen.dart';
-import 'package:english_learning/features/learning/widgets/section_card_shimmer.dart';
+import 'package:english_learning/features/learning/widgets/section_card_loading.dart';
 import 'package:flutter/material.dart';
 import 'package:english_learning/core/utils/styles/theme.dart';
 import 'package:provider/provider.dart';
@@ -67,7 +67,12 @@ class _LearningScreenState extends State<LearningScreen> {
                 child: Consumer<SectionProvider>(
                   builder: (context, sectionProvider, _) {
                     if (sectionProvider.isLoading) {
-                      return _buildShimmerLoading();
+                      return ListView.builder(
+                        padding: const EdgeInsets.only(top: 8),
+                        itemCount: 6,
+                        itemBuilder: (context, index) =>
+                            const SectionCardLoading(),
+                      );
                     } else if (sectionProvider.error != null) {
                       return Center(
                           child: Column(
@@ -97,7 +102,7 @@ class _LearningScreenState extends State<LearningScreen> {
                         itemCount: sectionProvider.sections.length,
                         itemBuilder: (context, index) {
                           final section = sectionProvider.sections[index];
-                          return LearningCard(
+                          return SectionCard(
                             section: section,
                             onTap: () => Navigator.push(
                               context,
@@ -120,52 +125,4 @@ class _LearningScreenState extends State<LearningScreen> {
       ),
     );
   }
-
-  Widget _buildShimmerLoading() {
-    return ListView.builder(
-      itemCount: 5, // Misalnya, kita menampilkan 5 shimmer items
-      itemBuilder: (context, index) {
-        return ShimmerWidget(
-          child: Container(
-            margin: const EdgeInsets.only(bottom: 16),
-            child: Row(
-              children: [
-                Container(
-                  width: 80,
-                  height: 80,
-                  decoration: BoxDecoration(
-                    color: Colors.grey[300],
-                    borderRadius: BorderRadius.circular(8),
-                  ),
-                ),
-                const SizedBox(width: 16),
-                Expanded(
-                  child: Column(
-                    crossAxisAlignment: CrossAxisAlignment.start,
-                    children: [
-                      Container(
-                        height: 20,
-                        decoration: BoxDecoration(
-                          color: Colors.grey[300],
-                          borderRadius: BorderRadius.circular(8),
-                        ),
-                      ),
-                      const SizedBox(height: 8),
-                      Container(
-                        height: 20,
-                        decoration: BoxDecoration(
-                          color: Colors.grey[300],
-                          borderRadius: BorderRadius.circular(8),
-                        ),
-                      ),
-                    ],
-                  ),
-                ),
-              ],
-            ),
-          ),
-        );
-      },
-    );
-  }
 }

lib/features/learning/widgets/section_card.dart

@@ -1,23 +1,24 @@
 import 'package:english_learning/core/services/constants.dart';
+import 'package:english_learning/core/widgets/loading/shimmer_loading_widget.dart';
 import 'package:english_learning/features/learning/modules/model/section_model.dart';
 import 'package:flutter/material.dart';
 import 'package:english_learning/core/utils/styles/theme.dart';
 
-class LearningCard extends StatefulWidget {
+class SectionCard extends StatefulWidget {
   final Section section;
   final VoidCallback? onTap;
 
-  const LearningCard({
+  const SectionCard({
     super.key,
     required this.section,
     this.onTap,
   });
 
   @override
-  State<LearningCard> createState() => _LearningCardState();
+  State<SectionCard> createState() => _SectionCardState();
 }
 
-class _LearningCardState extends State<LearningCard>
+class _SectionCardState extends State<SectionCard>
     with SingleTickerProviderStateMixin {
   String _getFullImageUrl(String thumbnail) {
     if (thumbnail.startsWith('http')) {
@@ -64,11 +65,10 @@ class _LearningCardState extends State<LearningCard>
                     },
                     loadingBuilder: (context, child, loadingProgress) {
                       if (loadingProgress == null) return child;
-                      return Container(
+                      return ShimmerLoadingWidget(
                         width: 90,
                         height: 104,
-                        color: Colors.grey[300],
+                        borderRadius: BorderRadius.circular(8),
-                        child: Center(child: CircularProgressIndicator()),
                       );
                     },
                   )),

lib/features/learning/widgets/section_card_loading.dart

@@ -0,0 +1,59 @@
+import 'package:english_learning/core/widgets/loading/shimmer_loading_widget.dart';
+import 'package:flutter/material.dart';
+
+class SectionCardLoading extends StatelessWidget {
+  const SectionCardLoading({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+        color: Colors.white,
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(12),
+        ),
+        elevation: 1,
+        margin: const EdgeInsets.symmetric(vertical: 8.0),
+        child: Padding(
+          padding: const EdgeInsets.all(12.0),
+          child: Row(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              ShimmerLoadingWidget(
+                width: 90,
+                height: 104,
+                borderRadius: BorderRadius.circular(8),
+              ),
+              const SizedBox(width: 16),
+              Expanded(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    // Title shimmer
+                    ShimmerLoadingWidget(
+                      width: 200,
+                      height: 16,
+                      borderRadius: BorderRadius.circular(4),
+                    ),
+                    const SizedBox(height: 12),
+                    //description
+                    Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        for (int i = 0; i < 3; i++) ...[
+                          const ShimmerLoadingWidget(
+                            width: double.infinity,
+                            height: 12,
+                            borderRadius: BorderRadius.all(Radius.circular(4)),
+                          ),
+                          const SizedBox(height: 6),
+                        ],
+                      ],
+                    ),
+                  ],
+                ),
+              ),
+            ],
+          ),
+        ));
+  }
+}

lib/features/learning/widgets/section_card_shimmer.dart

@@ -1,20 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:shimmer/shimmer.dart';
-
-class ShimmerWidget extends StatelessWidget {
-  final Widget child;
-
-  const ShimmerWidget({
-    super.key,
-    required this.child,
-  });
-
-  @override
-  Widget build(BuildContext context) {
-    return Shimmer.fromColors(
-      baseColor: Colors.grey[300]!,
-      highlightColor: Colors.grey[100]!,
-      child: child,
-    );
-  }
-}