fixed poll. (#26)

* improved link preview.

* fixed offline mode.

* make refresh controller required.

* remove shouldRetry.

* fixed link preview.

fastlane/metadata/android/en-US/changelogs/46.txt

@@ -0,0 +1,4 @@
+- You can now participate in polls.
+- Pick up where you left off.
+- Swipe left on comment tile to view its parents without scrolling all the way up.
+- Huge performance boost.

fastlane/metadata/android/en-US/changelogs/47.txt

@@ -0,0 +1,4 @@
+- You can now participate in polls.
+- Pick up where you left off.
+- Swipe left on comment tile to view its parents without scrolling all the way up.
+- Huge performance boost.

fastlane/metadata/android/en-US/changelogs/48.txt

@@ -0,0 +1,4 @@
+- You can now participate in polls.
+- Pick up where you left off.
+- Swipe left on comment tile to view its parents without scrolling all the way up.
+- Huge performance boost.

ios/Runner.xcodeproj/project.pbxproj

@@ -568,7 +568,7 @@
 				CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 3;
+				CURRENT_PROJECT_VERSION = 1;
 				DEVELOPMENT_TEAM = QMWX3X2NF7;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
@@ -577,7 +577,7 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 0.2.8;
+				MARKETING_VERSION = 0.2.10;
 				PRODUCT_BUNDLE_IDENTIFIER = com.jiaqi.hacki;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
@@ -705,7 +705,7 @@
 				CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 3;
+				CURRENT_PROJECT_VERSION = 1;
 				DEVELOPMENT_TEAM = QMWX3X2NF7;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
@@ -714,7 +714,7 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 0.2.8;
+				MARKETING_VERSION = 0.2.10;
 				PRODUCT_BUNDLE_IDENTIFIER = com.jiaqi.hacki;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
@@ -736,7 +736,7 @@
 				CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 3;
+				CURRENT_PROJECT_VERSION = 1;
 				DEVELOPMENT_TEAM = QMWX3X2NF7;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
@@ -745,7 +745,7 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 0.2.8;
+				MARKETING_VERSION = 0.2.10;
 				PRODUCT_BUNDLE_IDENTIFIER = com.jiaqi.hacki;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";

lib/cubits/poll/poll_cubit.dart

@@ -23,6 +23,10 @@ class PollCubit extends Cubit<PollState> {
   Future<void> init({
     bool refresh = false,
   }) async {
+    if (refresh) {
+      emit(PollState.init());
+    }
+
     emit(state.copyWith(status: PollStatus.loading));
 
     List<int> pollOptionsIds = _story.parts;

lib/main.dart

@@ -76,6 +76,7 @@ Future<void> main() async {
   //     runApp(
   //       HackiApp(
   //         savedThemeMode: savedThemeMode,
+  //         trueDarkMode: trueDarkMode,
   //       ),
   //     );
   //   },

lib/models/story.dart

@@ -4,11 +4,15 @@ import 'package:hacki/extensions/extensions.dart';
 import 'package:hacki/models/item.dart';
 
 enum StoryType {
-  top,
-  latest,
-  ask,
-  show,
-  jobs,
+  top('topstories'),
+  latest('newstories'),
+  ask('askstories'),
+  show('showstories'),
+  jobs('jobstories');
+
+  const StoryType(this.path);
+
+  final String path;
 }
 
 class Story extends Item {

lib/repositories/auth_repository.dart

@@ -1,25 +1,23 @@
 import 'dart:async';
-import 'dart:io';
 
 import 'package:dio/dio.dart';
 import 'package:hacki/config/locator.dart';
 import 'package:hacki/models/models.dart';
+import 'package:hacki/repositories/postable_repository.dart';
 import 'package:hacki/repositories/repositories.dart';
-import 'package:hacki/utils/service_exception.dart';
 
-class AuthRepository {
+class AuthRepository extends PostableRepository {
   AuthRepository({
     Dio? dio,
     PreferenceRepository? preferenceRepository,
-  })  : _dio = dio ?? Dio(),
-        _preferenceRepository =
-            preferenceRepository ?? locator.get<PreferenceRepository>();
+  })  : _preferenceRepository =
+            preferenceRepository ?? locator.get<PreferenceRepository>(),
+        super(dio: dio);
+
+  final PreferenceRepository _preferenceRepository;
 
   static const String _authority = 'news.ycombinator.com';
 
-  final Dio _dio;
-  final PreferenceRepository _preferenceRepository;
-
   Future<bool> get loggedIn async => _preferenceRepository.loggedIn;
 
   Future<String?> get username async => _preferenceRepository.username;
@@ -37,7 +35,7 @@ class AuthRepository {
       goto: 'news',
     );
 
-    final bool success = await _performDefaultPost(uri, data);
+    final bool success = await performDefaultPost(uri, data);
 
     if (success) {
       await _preferenceRepository.setAuth(
@@ -69,7 +67,7 @@ class AuthRepository {
       un: flag ? null : 't',
     );
 
-    return _performDefaultPost(uri, data);
+    return performDefaultPost(uri, data);
   }
 
   Future<bool> favorite({
@@ -86,7 +84,7 @@ class AuthRepository {
       un: favorite ? null : 't',
     );
 
-    return _performDefaultPost(uri, data);
+    return performDefaultPost(uri, data);
   }
 
   Future<bool> upvote({
@@ -103,7 +101,7 @@ class AuthRepository {
       how: upvote ? 'up' : 'un',
     );
 
-    return _performDefaultPost(uri, data);
+    return performDefaultPost(uri, data);
   }
 
   Future<bool> downvote({
@@ -120,53 +118,6 @@ class AuthRepository {
       how: downvote ? 'down' : 'un',
     );
 
-    return _performDefaultPost(uri, data);
-  }
-
-  Future<bool> _performDefaultPost(
-    Uri uri,
-    PostDataMixin data, {
-    String? cookie,
-    bool Function(String?)? validateLocation,
-  }) async {
-    try {
-      final Response<void> response = await _performPost<void>(
-        uri,
-        data,
-        cookie: cookie,
-        validateStatus: (int? status) => status == HttpStatus.found,
-      );
-
-      if (validateLocation != null) {
-        return validateLocation(response.headers.value('location'));
-      }
-
-      return true;
-    } on ServiceException {
-      return false;
-    }
-  }
-
-  Future<Response<T>> _performPost<T>(
-    Uri uri,
-    PostDataMixin data, {
-    String? cookie,
-    ResponseType? responseType,
-    bool Function(int?)? validateStatus,
-  }) async {
-    try {
-      return await _dio.postUri<T>(
-        uri,
-        data: data.toJson(),
-        options: Options(
-          headers: <String, dynamic>{if (cookie != null) 'cookie': cookie},
-          responseType: responseType,
-          contentType: 'application/x-www-form-urlencoded',
-          validateStatus: validateStatus,
-        ),
-      );
-    } on DioError catch (e) {
-      throw ServiceException(e.message);
-    }
+    return performDefaultPost(uri, data);
   }
 }

lib/repositories/post_repository.dart

@@ -3,20 +3,20 @@ import 'dart:io';
 import 'package:dio/dio.dart';
 import 'package:hacki/config/locator.dart';
 import 'package:hacki/models/post_data.dart';
-import 'package:hacki/repositories/repositories.dart';
+import 'package:hacki/repositories/postable_repository.dart';
+import 'package:hacki/repositories/preference_repository.dart';
 import 'package:hacki/utils/utils.dart';
 
-class PostRepository {
+class PostRepository extends PostableRepository {
   PostRepository({Dio? dio, PreferenceRepository? storageRepository})
-      : _dio = dio ?? Dio(),
-        _preferenceRepository =
-            storageRepository ?? locator.get<PreferenceRepository>();
+      : _preferenceRepository =
+            storageRepository ?? locator.get<PreferenceRepository>(),
+        super(dio: dio);
+
+  final PreferenceRepository _preferenceRepository;
 
   static const String _authority = 'news.ycombinator.com';
 
-  final Dio _dio;
-  final PreferenceRepository _preferenceRepository;
-
   Future<bool> comment({
     required int parentId,
     required String text,
@@ -36,7 +36,7 @@ class PostRepository {
       text: text,
     );
 
-    return _performDefaultPost(
+    return performDefaultPost(
       uri,
       data,
       validateLocation: (String? location) => location == '/',
@@ -79,7 +79,7 @@ class PostRepository {
       text: text,
     );
 
-    return _performDefaultPost(
+    return performDefaultPost(
       uri,
       data,
       cookie: cookie,
@@ -121,7 +121,7 @@ class PostRepository {
       text: text,
     );
 
-    return _performDefaultPost(
+    return performDefaultPost(
       uri,
       data,
       cookie: cookie,
@@ -144,58 +144,11 @@ class PostRepository {
       pw: password,
       id: id,
     );
-    return _performPost(
+    return performPost(
       uri,
       data,
       responseType: ResponseType.bytes,
       validateStatus: (int? status) => status == HttpStatus.ok,
     );
   }
-
-  Future<bool> _performDefaultPost(
-    Uri uri,
-    PostDataMixin data, {
-    String? cookie,
-    bool Function(String?)? validateLocation,
-  }) async {
-    try {
-      final Response<void> response = await _performPost<void>(
-        uri,
-        data,
-        cookie: cookie,
-        validateStatus: (int? status) => status == HttpStatus.found,
-      );
-
-      if (validateLocation != null) {
-        return validateLocation(response.headers.value('location'));
-      }
-
-      return true;
-    } on ServiceException {
-      return false;
-    }
-  }
-
-  Future<Response<T>> _performPost<T>(
-    Uri uri,
-    PostDataMixin data, {
-    String? cookie,
-    ResponseType? responseType,
-    bool Function(int?)? validateStatus,
-  }) async {
-    try {
-      return await _dio.postUri<T>(
-        uri,
-        data: data.toJson(),
-        options: Options(
-          headers: <String, dynamic>{if (cookie != null) 'cookie': cookie},
-          responseType: responseType,
-          contentType: 'application/x-www-form-urlencoded',
-          validateStatus: validateStatus,
-        ),
-      );
-    } on DioError catch (e) {
-      throw ServiceException(e.message);
-    }
-  }
 }

lib/repositories/postable_repository.dart

@@ -0,0 +1,63 @@
+import 'dart:io';
+
+import 'package:dio/dio.dart';
+import 'package:flutter/material.dart';
+import 'package:hacki/models/models.dart';
+import 'package:hacki/utils/service_exception.dart';
+
+class PostableRepository {
+  PostableRepository({
+    Dio? dio,
+  }) : _dio = dio ?? Dio();
+
+  final Dio _dio;
+
+  @protected
+  Future<bool> performDefaultPost(
+    Uri uri,
+    PostDataMixin data, {
+    String? cookie,
+    bool Function(String?)? validateLocation,
+  }) async {
+    try {
+      final Response<void> response = await performPost<void>(
+        uri,
+        data,
+        cookie: cookie,
+        validateStatus: (int? status) => status == HttpStatus.found,
+      );
+
+      if (validateLocation != null) {
+        return validateLocation(response.headers.value('location'));
+      }
+
+      return true;
+    } on ServiceException {
+      return false;
+    }
+  }
+
+  @protected
+  Future<Response<T>> performPost<T>(
+    Uri uri,
+    PostDataMixin data, {
+    String? cookie,
+    ResponseType? responseType,
+    bool Function(int?)? validateStatus,
+  }) async {
+    try {
+      return await _dio.postUri<T>(
+        uri,
+        data: data.toJson(),
+        options: Options(
+          headers: <String, dynamic>{if (cookie != null) 'cookie': cookie},
+          responseType: responseType,
+          contentType: 'application/x-www-form-urlencoded',
+          validateStatus: validateStatus,
+        ),
+      );
+    } on DioError catch (e) {
+      throw ServiceException(e.message);
+    }
+  }
+}

lib/repositories/stories_repository.dart

@@ -25,22 +25,9 @@ class StoriesRepository {
   }
 
   Future<List<int>> fetchStoryIds({required StoryType of}) async {
-    final String suffix = () {
-      switch (of) {
-        case StoryType.top:
-          return 'topstories.json';
-        case StoryType.latest:
-          return 'newstories.json';
-        case StoryType.ask:
-          return 'askstories.json';
-        case StoryType.show:
-          return 'showstories.json';
-        case StoryType.jobs:
-          return 'jobstories.json';
-      }
-    }();
-    final List<int> ids =
-        await _firebaseClient.get('$_baseUrl$suffix').then((dynamic val) {
+    final List<int> ids = await _firebaseClient
+        .get('$_baseUrl${of.path}.json')
+        .then((dynamic val) {
       final List<int> ids = (val as List<dynamic>).cast<int>();
       return ids;
     });

lib/screens/profile/profile_screen.dart

@@ -390,7 +390,7 @@ class _ProfileScreenState extends State<ProfileScreen>
                                   showAboutDialog(
                                     context: context,
                                     applicationName: 'Hacki',
-                                    applicationVersion: 'v0.2.8',
+                                    applicationVersion: 'v0.2.10',
                                     applicationIcon: ClipRRect(
                                       borderRadius: const BorderRadius.all(
                                         Radius.circular(12),

lib/screens/profile/widgets/inbox_view.dart

@@ -48,20 +48,14 @@ class InboxView extends StatelessWidget {
               loadStyle: LoadStyle.ShowWhenLoading,
               builder: (BuildContext context, LoadStatus? mode) {
                 Widget body;
-                if (mode == LoadStatus.idle) {
-                  body = const Text('');
-                } else if (mode == LoadStatus.loading) {
+                if (mode == LoadStatus.loading) {
                   body = const CustomCircularProgressIndicator();
                 } else if (mode == LoadStatus.failed) {
                   body = const Text(
                     'loading failed.',
                   );
-                } else if (mode == LoadStatus.canLoading) {
-                  body = const Text(
-                    'loading more.',
-                  );
                 } else {
-                  body = const Text('');
+                  body = const SizedBox.shrink();
                 }
                 return SizedBox(
                   height: 55,

lib/screens/search/search_screen.dart

@@ -73,20 +73,14 @@ class _SearchScreenState extends State<SearchScreen> {
                         loadStyle: LoadStyle.ShowWhenLoading,
                         builder: (BuildContext context, LoadStatus? mode) {
                           Widget body;
-                          if (mode == LoadStatus.idle) {
-                            body = const Text('');
-                          } else if (mode == LoadStatus.loading) {
+                          if (mode == LoadStatus.loading) {
                             body = const CustomCircularProgressIndicator();
                           } else if (mode == LoadStatus.failed) {
                             body = const Text(
                               'loading failed.',
                             );
-                          } else if (mode == LoadStatus.canLoading) {
-                            body = const Text(
-                              'loading more.',
-                            );
                           } else {
-                            body = const Text('');
+                            body = const SizedBox.shrink();
                           }
                           return SizedBox(
                             height: 55,

lib/screens/story/story_screen.dart

@@ -261,7 +261,10 @@ class _StoryScreenState extends State<StoryScreen> {
                   HapticFeedback.lightImpact();
                   locator.get<CacheService>().resetComments();
                   context.read<CommentsCubit>().refresh();
+
+                  if (widget.story.isPoll) {
                     context.read<PollCubit>().refresh();
+                  }
                 },
                 onLoading: () {
                   context.read<CommentsCubit>().loadMore();

lib/screens/widgets/items_list_view.dart

@@ -44,7 +44,7 @@ class ItemsListView<T extends Item> extends StatelessWidget {
 
   final List<T> items;
   final Widget? header;
-  final RefreshController? refreshController;
+  final RefreshController refreshController;
   final VoidCallback? onRefresh;
   final VoidCallback? onLoadMore;
   final ValueChanged<Story>? onPinned;
@@ -180,10 +180,6 @@ class ItemsListView<T extends Item> extends StatelessWidget {
       ],
     );
 
-    if (refreshController == null) {
-      return child;
-    }
-
     return SmartRefresher(
       enablePullUp: true,
       enablePullDown: enablePullDown,
@@ -194,20 +190,14 @@ class ItemsListView<T extends Item> extends StatelessWidget {
         loadStyle: LoadStyle.ShowWhenLoading,
         builder: (BuildContext context, LoadStatus? mode) {
           Widget body;
-          if (mode == LoadStatus.idle) {
-            body = const Text('');
-          } else if (mode == LoadStatus.loading) {
+          if (mode == LoadStatus.loading) {
             body = const CustomCircularProgressIndicator();
           } else if (mode == LoadStatus.failed) {
             body = const Text(
               'loading failed.',
             );
-          } else if (mode == LoadStatus.canLoading) {
-            body = const Text(
-              'loading more.',
-            );
           } else {
-            body = const Text('');
+            body = const SizedBox.shrink();
           }
           return SizedBox(
             height: 55,
@@ -215,7 +205,7 @@ class ItemsListView<T extends Item> extends StatelessWidget {
           );
         },
       ),
-      controller: refreshController!,
+      controller: refreshController,
       onRefresh: onRefresh,
       onLoading: onLoadMore,
       child: child,

lib/screens/widgets/link_preview/link_preview.dart

@@ -3,6 +3,7 @@ import 'dart:io';
 
 import 'package:flutter/material.dart';
 import 'package:hacki/config/constants.dart';
+import 'package:hacki/models/models.dart';
 import 'package:hacki/screens/widgets/link_preview/link_view.dart';
 import 'package:hacki/screens/widgets/link_preview/web_analyzer.dart';
 import 'package:url_launcher/url_launcher.dart';
@@ -11,6 +12,7 @@ class LinkPreview extends StatefulWidget {
   const LinkPreview({
     super.key,
     required this.link,
+    required this.story,
     this.cache = const Duration(days: 30),
     this.titleStyle,
     this.bodyStyle,
@@ -28,6 +30,8 @@ class LinkPreview extends StatefulWidget {
     this.removeElevation = false,
   });
 
+  final Story story;
+
   /// Web address (Url that need to be parsed)
   /// For IOS & Web, only HTTP and HTTPS are support
   /// For Android, all urls are supported
@@ -101,12 +105,11 @@ class LinkPreview extends StatefulWidget {
 
 class _LinkPreviewState extends State<LinkPreview> {
   InfoBase? _info;
-  String? _errorImage, _errorTitle, _errorBody, _url;
+  String? _errorTitle, _errorBody, _url;
   bool _loading = false;
 
   @override
   void initState() {
-    _errorImage = widget.errorImage ?? Constants.hackerNewsLogoLink;
     _errorTitle = widget.errorTitle ?? 'Something went wrong!';
     _errorBody = widget.errorBody ??
         'Oops! Unable to parse the url. We have '
@@ -114,7 +117,12 @@ class _LinkPreviewState extends State<LinkPreview> {
             'we will try to fix this in our next release. Thanks!';
     _url = widget.link.trim();
 
+    if (_url?.isNotEmpty ?? false) {
       _info = WebAnalyzer.getInfoFromCache(_url);
+    } else {
+      _info = WebAnalyzer.getInfoFromCache(widget.story.id.toString());
+    }
+
     if (_info == null) {
       _loading = true;
       _getInfo();
@@ -124,15 +132,24 @@ class _LinkPreviewState extends State<LinkPreview> {
 
   Future<void> _getInfo() async {
     if (_url!.startsWith('http') || _url!.startsWith('https')) {
-      _info = await WebAnalyzer.getInfo(_url, cache: widget.cache);
+      _info = await WebAnalyzer.getInfo(
+        _url,
+        story: widget.story,
+        cache: widget.cache,
+      );
+    } else {
+      _info = await WebAnalyzer.getInfo(
+        widget.story.id.toString(),
+        story: widget.story,
+        cache: widget.cache,
+      );
+    }
+
     if (mounted) {
       setState(() {
         _loading = false;
       });
     }
-    } else {
-      //print('$_url is not starting with either http or https');
-    }
   }
 
   Future<void> _launchURL(String url) async {
@@ -171,6 +188,7 @@ class _LinkPreviewState extends State<LinkPreview> {
         title: title!,
         description: desc!,
         imageUri: imageUri,
+        imagePath: Constants.hackerNewsLogoPath,
         onTap: _launchURL,
         titleTextStyle: widget.titleStyle,
         bodyTextStyle: widget.bodyStyle,
@@ -212,9 +230,8 @@ class _LinkPreviewState extends State<LinkPreview> {
         _height,
         title: _errorTitle,
         desc: _errorBody,
-        imageUri: widget.showMultimedia
-            ? (img.trim() == '' ? _errorImage : img)
-            : null,
+        imageUri:
+            widget.showMultimedia ? (img.trim() == '' ? null : img) : null,
       );
     } else {
       final WebInfo? info = _info as WebInfo?;
@@ -222,7 +239,8 @@ class _LinkPreviewState extends State<LinkPreview> {
           ? _buildLinkContainer(
               _height,
               title: _errorTitle,
-              imageUri: widget.showMultimedia ? _errorImage : null,
+              desc: _errorBody,
+              imageUri: null,
             )
           : _buildLinkContainer(
               _height,
@@ -235,7 +253,7 @@ class _LinkPreviewState extends State<LinkPreview> {
                       ? info.image
                       : WebAnalyzer.isNotEmpty(info.icon)
                           ? info.icon
-                          : _errorImage)
+                          : null)
                   : null,
               isIcon: !WebAnalyzer.isNotEmpty(info.image),
             );

lib/screens/widgets/link_preview/link_view.dart

@@ -97,7 +97,7 @@ class LinkView extends StatelessWidget {
                     child: (imageUri?.isEmpty ?? true) && imagePath != null
                         ? Image.asset(
                             imagePath!,
-                            fit: isIcon ? BoxFit.scaleDown : BoxFit.fitWidth,
+                            fit: BoxFit.cover,
                           )
                         : CachedNetworkImage(
                             imageUrl: imageUri!,

lib/screens/widgets/link_preview/web_analyzer.dart

@@ -5,7 +5,10 @@ import 'dart:io';
 import 'package:collection/collection.dart' show IterableExtension;
 import 'package:fast_gbk/fast_gbk.dart';
 import 'package:flutter/foundation.dart';
-import 'package:html/dom.dart' hide Text;
+import 'package:hacki/config/locator.dart';
+import 'package:hacki/models/models.dart';
+import 'package:hacki/repositories/repositories.dart';
+import 'package:html/dom.dart' hide Text, Comment;
 import 'package:html/parser.dart' as parser;
 import 'package:http/http.dart';
 import 'package:http/io_client.dart';
@@ -63,7 +66,7 @@ class WebVideoInfo extends WebImageInfo {
 
 /// Web analyzer
 class WebAnalyzer {
-  static final Map<String?, InfoBase> _map = <String?, InfoBase>{};
+  static final Map<String?, InfoBase> cacheMap = <String?, InfoBase>{};
   static final RegExp _bodyReg =
       RegExp(r'<body[^>]*>([\s\S]*?)<\/body>', caseSensitive: false);
   static final RegExp _htmlReg = RegExp(
@@ -80,7 +83,10 @@ class WebAnalyzer {
   static final RegExp _lineReg = RegExp(r'[\n\r]|&nbsp;|&gt;');
   static final RegExp _spaceReg = RegExp(r'\s+');
 
-  /// Is it an empty string
+  static bool isEmpty(String? str) {
+    return !isNotEmpty(str);
+  }
+
   static bool isNotEmpty(String? str) {
     return str != null && str.isNotEmpty && str.trim().isNotEmpty;
   }
@@ -88,10 +94,11 @@ class WebAnalyzer {
   /// Get web information
   /// return [InfoBase]
   static InfoBase? getInfoFromCache(String? url) {
-    final InfoBase? info = _map[url];
+    final InfoBase? info = cacheMap[url];
+
     if (info != null) {
       if (!info._timeout.isAfter(DateTime.now())) {
-        _map.remove(url);
+        cacheMap.remove(url);
       }
     }
     return info;
@@ -101,25 +108,69 @@ class WebAnalyzer {
   /// return [InfoBase]
   static Future<InfoBase?> getInfo(
     String? url, {
+    required Story story,
     Duration cache = const Duration(hours: 24),
     bool multimedia = true,
   }) async {
-    // final start = DateTime.now();
-
     InfoBase? info = getInfoFromCache(url);
     if (info != null) return info;
+
+    if (story.url.isEmpty && story.text.isNotEmpty) {
+      info = WebInfo(
+        title: story.title,
+        description: story.text,
+      ).._timeout = DateTime.now().add(cache);
+      cacheMap[story.id.toString()] = info;
+
+      return info;
+    }
+
     try {
       info = await _getInfoByIsolate(url, multimedia);
 
       if (info != null) {
         info._timeout = DateTime.now().add(cache);
-        _map[url] = info;
+        cacheMap[url] = info;
       }
     } catch (e) {
-      //print('Get web error:$url, Error:$e');
+      //locator.get<Logger>().log(Level.error, e);
     }
 
-    // print("$url cost ${DateTime.now().difference(start).inMilliseconds}");
+    if ((info == null ||
+            info is WebImageInfo ||
+            (info is WebInfo && (info.description?.isEmpty ?? true))) &&
+        story.kids.isNotEmpty) {
+      bool shouldRetry = false;
+      final Comment? comment = await locator
+          .get<StoriesRepository>()
+          .fetchCommentBy(id: story.kids.first)
+          .catchError((Object err) async {
+        int index = 0;
+        Comment? comment;
+
+        while (comment == null && index < story.kids.length) {
+          comment = await locator
+              .get<CacheRepository>()
+              .getCachedComment(id: story.kids.elementAt(index));
+          index++;
+        }
+
+        shouldRetry = true;
+        return comment;
+      });
+
+      info = WebInfo(
+        description:
+            comment != null ? '${comment.by}: ${comment.text}' : 'no comments',
+        image: info is WebInfo ? info.image : (info as WebImageInfo?)?.image,
+        icon: info is WebInfo ? info.icon : null,
+      );
+
+      if (!shouldRetry) {
+        info._timeout = DateTime.now().add(cache);
+        cacheMap[url] = info;
+      }
+    }
 
     return info;
   }
@@ -128,6 +179,7 @@ class WebAnalyzer {
     final Response? response = await _requestUrl(url);
 
     if (response == null) return null;
+
     if (multimedia!) {
       final String? contentType = response.headers['content-type'];
       if (contentType != null) {
@@ -214,17 +266,21 @@ class WebAnalyzer {
       ..maxRedirects = 3
       ..persistentConnection = true
       ..headers['accept-encoding'] = 'gzip, deflate'
-      ..headers['User-Agent'] =
-          'Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Mobile Safari/537.36'
+      ..headers['User-Agent'] = url.contains('twitter.com')
+          ? 'Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)'
+          : 'Mozilla/5.0'
       ..headers['cache-control'] = 'no-cache'
       ..headers['accept'] =
           'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9';
-    // print(request.headers);
+
     final IOStreamedResponse stream =
         await client.send(request).catchError((dynamic err) {
-      //print('Error in getting the link => ${request.url}');
-      //print('Error => $err');
+      // locator.get<Logger>().log(
+      //       Level.error,
+      //       'Error in getting the link => ${request.url}\n$err',
+      //     );
     });
+
     if (stream.statusCode == HttpStatus.movedTemporarily ||
         stream.statusCode == HttpStatus.movedPermanently) {
       if (stream.isRedirect && count < 6) {
@@ -240,7 +296,6 @@ class WebAnalyzer {
         }
         count++;
         client.close();
-        // print("Redirect ====> $url");
         return _requestUrl(url, count: count, cookie: cookie);
       }
     } else if (stream.statusCode == HttpStatus.ok) {
@@ -257,7 +312,6 @@ class WebAnalyzer {
       }
     }
     client.close();
-    //if (res == null) print('Get web info empty($url)');
     return res;
   }
 
@@ -274,28 +328,22 @@ class WebAnalyzer {
           String temp = html.replaceAll(r'\', '');
           temp = temp.replaceAll('u003C', '<');
           temp = temp.replaceAll('u003E', '>');
-          // print(temp);
-        } else {
-          // print(html);
         }
       } catch (e) {
         try {
           html = gbk.decode(response.bodyBytes);
         } catch (e) {
-          //print('Web page resolution failure from:$url Error:$e');
+          // locator.get<Logger>().log(
+          //       Level.error,
+          //       'Web page resolution failure from:$url Error:$e',
+          //     );
         }
       }
 
-      if (html == null) {
-        //print('Web page resolution failure from:$url');
-        return null;
-      }
+      if (html == null) return null;
 
-      // Improved performance
-      // final start = DateTime.now();
       final String headHtml = _getHeadHtml(html);
       final Document document = parser.parse(headHtml);
-      // print("dom cost ${DateTime.now().difference(start).inMilliseconds}");
       final Uri uri = Uri.parse(url);
 
       // get image or video
@@ -360,6 +408,7 @@ class WebAnalyzer {
   static String _analyzeTitle(Document document, {bool isTwitter = false}) {
     if (isTwitter) return '';
     final String? title = _getMetaContent(document, 'property', 'og:title');
+
     if (title != null) return title;
     final List<Element> list = document.head!.getElementsByTagName('title');
     if (list.isNotEmpty) {
@@ -379,14 +428,12 @@ class WebAnalyzer {
         _getMetaContent(document, 'name', 'description') ??
             _getMetaContent(document, 'name', 'Description');
 
-    if (!isNotEmpty(description)) {
-      // final DateTime start = DateTime.now();
+    if (isEmpty(description)) {
       String body = html.replaceAll(_htmlReg, '');
       body = body.trim().replaceAll(_lineReg, ' ').replaceAll(_spaceReg, ' ');
       if (body.length > 300) {
         body = body.substring(0, 300);
       }
-      // print("html cost ${DateTime.now().difference(start).inMilliseconds}");
       if (body.contains('JavaScript is disabled in your browser')) return '';
       return body;
     }

lib/screens/widgets/offline_banner.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:hacki/blocs/blocs.dart';
 import 'package:hacki/cubits/cubits.dart';
+import 'package:hacki/screens/widgets/link_preview/web_analyzer.dart';
 
 class OfflineBanner extends StatelessWidget {
   const OfflineBanner({
@@ -57,6 +58,7 @@ class OfflineBanner extends StatelessWidget {
                         context.read<StoriesBloc>().add(StoriesExitOffline());
                         context.read<AuthBloc>().add(AuthInitialize());
                         context.read<PinCubit>().init();
+                        WebAnalyzer.cacheMap.clear();
                       }
                     });
                   },

lib/screens/widgets/story_tile.dart

@@ -4,9 +4,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_fadein/flutter_fadein.dart';
 import 'package:hacki/config/constants.dart';
 import 'package:hacki/models/models.dart';
-import 'package:hacki/screens/widgets/link_preview/link_view.dart';
 import 'package:hacki/screens/widgets/widgets.dart';
-import 'package:html/parser.dart';
 import 'package:shimmer/shimmer.dart';
 
 class StoryTile extends StatelessWidget {
@@ -35,7 +33,6 @@ class StoryTile extends StatelessWidget {
           ? 100.0
           : (MediaQuery.of(context).size.height * 0.14).clamp(118.0, 140.0);
 
-      if (story.url.isNotEmpty) {
       return TapDownWrapper(
         onTap: onTap,
         child: Padding(
@@ -44,7 +41,8 @@ class StoryTile extends StatelessWidget {
           ),
           child: AbsorbPointer(
             child: LinkPreview(
-                link: story.url.isNotEmpty ? story.url : 's',
+              story: story,
+              link: story.url,
               placeholderWidget: FadeIn(
                 child: SizedBox(
                   height: height,
@@ -135,37 +133,6 @@ class StoryTile extends StatelessWidget {
           ),
         ),
       );
-      } else {
-        final String text = parse(story.text).body?.text ?? '';
-
-        return TapDownWrapper(
-          onTap: onTap,
-          child: Padding(
-            padding: const EdgeInsets.symmetric(
-              horizontal: 12,
-            ),
-            child: AbsorbPointer(
-              child: SizedBox(
-                height: height,
-                child: LinkView(
-                  title: story.title,
-                  description: text,
-                  onTap: (_) {},
-                  url: '',
-                  imagePath: Constants.hackerNewsLogoPath,
-                  bodyMaxLines: height == 100 ? 3 : 4,
-                  titleTextStyle: TextStyle(
-                    color: hasRead
-                        ? Colors.grey[500]
-                        : Theme.of(context).textTheme.subtitle1!.color,
-                    fontWeight: FontWeight.bold,
-                  ),
-                ),
-              ),
-            ),
-          ),
-        );
-      }
     } else {
       return InkWell(
         onTap: onTap,

lib/utils/html_util.dart

@@ -2,9 +2,7 @@ import 'package:html/dom.dart' as dom;
 import 'package:html/parser.dart' as parser;
 import 'package:html_unescape/html_unescape.dart';
 
-class HtmlUtil {
-  const HtmlUtil._();
-
+abstract class HtmlUtil {
   static String? getTitle(dynamic input) =>
       parser.parse(input).head?.querySelector('title')?.text;
 

lib/utils/link_util.dart

@@ -2,7 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_inappwebview/flutter_inappwebview.dart';
 import 'package:url_launcher/url_launcher.dart';
 
-class LinkUtil {
+abstract class LinkUtil {
   static final ChromeSafariBrowser _browser = ChromeSafariBrowser();
 
   static void launchUrl(String link, {bool useReader = false}) {

pubspec.yaml

@@ -1,6 +1,6 @@
 name: hacki
 description: A Hacker News reader.
-version: 0.2.8+45
+version: 0.2.10+48
 publish_to: none
 
 environment: