Search journals by topics

README.md

@@ -87,6 +87,7 @@ If you run into any issue while using Wispar, have a question or want to share y
     <li><a href="https://unpaywall.org/" target='_blank'>Unpaywall</a></li>
     <li><a href="https://www.crossref.org/" target='_blank'>Crossref</a></li>
     <li><a href="https://openalex.org/" target='_blank'>OpenAlex</a></li>
+    <li><a href="https://github.com/hitfyd/ShowJCR" target='_blank'>Journal topics database</a> by <a href="https://github.com/hitfyd"target='_blank'> hitfyd</a></li>
 </ul>
 
 ## Screenshots

lib/l10n/app_en.arb

@@ -134,6 +134,10 @@
   "journals": "Journals",
   "@journals": {
     "description": "The journals menu button and the app bar title when in the journals screen."
+  },
+   "countJournals": "{count, plural, =0{No journals} =1{1 journal} other{{count} journals}}",
+  "@countJournals": {
+    "placeholders": {"count": {}}
   },
   "queries": "Queries",
   "@queries": {
@@ -189,6 +193,8 @@
   "@searchByDOI": {},
   "searchByTitle": "Search by title",
   "@searchByTitle": {},
+  "searchByTopic": "Search by topic",
+  "@searchByTopic":{},
   "searchByISSN": "Search by ISSN",
   "@searchByISSN": {},
   "queryHasNoNameError": "You must enter a query name in order to save it.",
@@ -215,6 +221,8 @@
   "@category": {},
   "publisher": "Publisher",
   "@publisher": {},
+  "publisherName": "Publisher: {publisherName}",
+  "@publisherName":{},
   "publishedin": "Published in",
   "@publishedin": {},
   "subjects": "Subjects",

lib/models/journal_topics_models.dart

@@ -0,0 +1,13 @@
+class JournalTopicsCsv {
+  final String journal;
+  final String issn;
+  final String eissn;
+  final List<String> categories;
+
+  JournalTopicsCsv({
+    required this.journal,
+    required this.issn,
+    required this.eissn,
+    required this.categories,
+  });
+}

lib/screens/journals_search_results_screen.dart

@@ -1,25 +1,25 @@
 import 'package:flutter/material.dart';
-import '../generated_l10n/app_localizations.dart';
-import '../services/crossref_api.dart';
-import '../models/crossref_journals_models.dart' as Journals;
-import '../widgets/journal_search_results_card.dart';
-import '../services/logs_helper.dart';
+import 'package:wispar/generated_l10n/app_localizations.dart';
+import 'package:wispar/services/crossref_api.dart';
+import 'package:wispar/models/crossref_journals_models.dart' as Journals;
+import 'package:wispar/widgets/journal_search_results_card.dart';
+import 'package:wispar/services/logs_helper.dart';
 
 class SearchResultsScreen extends StatefulWidget {
   final ListAndMore<Journals.Item> searchResults;
   final String searchQuery;
 
   const SearchResultsScreen({
-    Key? key,
+    super.key,
     required this.searchResults,
     required this.searchQuery,
-  }) : super(key: key);
+  });
 
   @override
-  _SearchResultsScreenState createState() => _SearchResultsScreenState();
+  SearchResultsScreenState createState() => SearchResultsScreenState();
 }
 
-class _SearchResultsScreenState extends State<SearchResultsScreen> {
+class SearchResultsScreenState extends State<SearchResultsScreen> {
   final logger = LogsService().logger;
   List<Journals.Item> items = [];
   bool isLoading = false;
@@ -101,10 +101,12 @@ class _SearchResultsScreenState extends State<SearchResultsScreen> {
         }
       });
     } catch (e, stackTrace) {
-      logger.severe('Failed to load more journals.', e, stackTrace);
-      ScaffoldMessenger.of(context).showSnackBar(SnackBar(
-          content:
-              Text(AppLocalizations.of(context)!.failLoadMorePublication)));
+      if (mounted) {
+        logger.severe('Failed to load more journals.', e, stackTrace);
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(
+            content:
+                Text(AppLocalizations.of(context)!.failLoadMorePublication)));
+      }
     } finally {
       setState(() => isLoading = false);
     }

lib/services/journal_topics_helper.dart

@@ -0,0 +1,46 @@
+import 'package:http/http.dart' as http;
+import 'package:wispar/models/journal_topics_models.dart';
+import 'package:csv/csv.dart';
+
+Future<List<JournalTopicsCsv>> fetchCsvCategories() async {
+  final url =
+      "https://raw.githubusercontent.com/hitfyd/ShowJCR/refs/heads/master/%E4%B8%AD%E7%A7%91%E9%99%A2%E5%88%86%E5%8C%BA%E8%A1%A8%E5%8F%8AJCR%E5%8E%9F%E5%A7%8B%E6%95%B0%E6%8D%AE%E6%96%87%E4%BB%B6/JCR2024-UTF8.csv";
+
+  final response = await http.get(Uri.parse(url));
+  if (response.statusCode != 200) {
+    throw Exception("Failed to load CSV");
+  }
+
+  final csvRows = const CsvToListConverter(eol: '\n', shouldParseNumbers: false)
+      .convert(response.body);
+
+  final List<JournalTopicsCsv> entries = [];
+
+  for (int i = 1; i < csvRows.length; i++) {
+    final row = csvRows[i];
+    final journal = row[0].toString();
+    final issn =
+        (row[1].toString().toUpperCase() == 'N/A') ? '' : row[1].toString();
+    final eissn =
+        (row[2].toString().toUpperCase() == 'N/A') ? '' : row[2].toString();
+    final categories = row[3].toString().split(';').map((c) {
+      String clean = c.replaceAll(RegExp(r'\([A-Z]+\)$'), '').trim();
+      return clean
+          .toLowerCase()
+          .split(' ')
+          .map((word) => word.isEmpty
+              ? ''
+              : '${word[0].toUpperCase()}${word.substring(1)}')
+          .join(' ');
+    }).toList();
+
+    entries.add(JournalTopicsCsv(
+      journal: journal,
+      issn: issn,
+      eissn: eissn,
+      categories: categories,
+    ));
+  }
+
+  return entries;
+}

lib/widgets/article_crossref_search_form.dart

@@ -1,17 +1,19 @@
 import 'package:flutter/material.dart';
-import '../generated_l10n/app_localizations.dart';
-import 'article_doi_search_form.dart';
-import 'article_query_search_form.dart';
-import '../services/crossref_api.dart';
-import '../screens/article_screen.dart';
-import '../services/logs_helper.dart';
+import 'package:wispar/generated_l10n/app_localizations.dart';
+import 'package:wispar/widgets/article_doi_search_form.dart';
+import 'package:wispar/widgets/article_query_search_form.dart';
+import 'package:wispar/services/crossref_api.dart';
+import 'package:wispar/screens/article_screen.dart';
+import 'package:wispar/services/logs_helper.dart';
 
 class CrossRefSearchForm extends StatefulWidget {
+  const CrossRefSearchForm({super.key});
+
   @override
-  _CrossRefSearchFormState createState() => _CrossRefSearchFormState();
+  CrossRefSearchFormState createState() => CrossRefSearchFormState();
 }
 
-class _CrossRefSearchFormState extends State<CrossRefSearchForm> {
+class CrossRefSearchFormState extends State<CrossRefSearchForm> {
   final logger = LogsService().logger;
   int selectedSearchIndex = 0; // 0 for Query, 1 for DOI
   final TextEditingController doiController = TextEditingController();
@@ -63,41 +65,47 @@ class _CrossRefSearchFormState extends State<CrossRefSearchForm> {
           final article = await CrossRefApi.getWorkByDOI(extractedDoi);
 
           // Dismiss the loading dialog
-          Navigator.pop(context);
-          Navigator.push(
-            context,
-            MaterialPageRoute(
-              builder: (context) => ArticleScreen(
-                doi: article.doi,
-                title: article.title,
-                issn: article.issn,
-                abstract: article.abstract,
-                journalTitle: article.journalTitle,
-                publishedDate: article.publishedDate,
-                authors: article.authors,
-                url: article.url,
-                license: article.license,
-                licenseName: article.licenseName,
-                publisher: article.publisher,
+          if (mounted) {
+            Navigator.pop(context);
+            Navigator.push(
+              context,
+              MaterialPageRoute(
+                builder: (context) => ArticleScreen(
+                  doi: article.doi,
+                  title: article.title,
+                  issn: article.issn,
+                  abstract: article.abstract,
+                  journalTitle: article.journalTitle,
+                  publishedDate: article.publishedDate,
+                  authors: article.authors,
+                  url: article.url,
+                  license: article.license,
+                  licenseName: article.licenseName,
+                  publisher: article.publisher,
+                ),
               ),
-            ),
-          );
+            );
+          }
         } catch (e, stackTrace) {
-          logger.severe(
-              'Error searching by DOI for DOI ${doi}.', e, stackTrace);
-          Navigator.pop(context); // Close loading dialog
-          ScaffoldMessenger.of(context).showSnackBar(
-            SnackBar(content: Text(AppLocalizations.of(context)!.errorOccured)),
-          );
+          logger.severe('Error searching by DOI for DOI $doi.', e, stackTrace);
+          if (mounted) {
+            Navigator.pop(context); // Close loading dialog
+            ScaffoldMessenger.of(context).showSnackBar(
+              SnackBar(
+                  content: Text(AppLocalizations.of(context)!.errorOccured)),
+            );
+          }
         }
       }
     } catch (e, stackTrace) {
-      logger.severe('Error searching articles using ${selectedSearchIndex}.', e,
+      logger.severe('Error searching articles using $selectedSearchIndex.', e,
           stackTrace);
-      Navigator.pop(context); // Close loading dialog
-      ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(content: Text(AppLocalizations.of(context)!.errorOccured)),
-      );
+      if (mounted) {
+        Navigator.pop(context); // Close loading dialog
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text(AppLocalizations.of(context)!.errorOccured)),
+        );
+      }
     }
   }
 
@@ -118,6 +126,16 @@ class _CrossRefSearchFormState extends State<CrossRefSearchForm> {
               child: LayoutBuilder(
                 builder: (context, constraints) {
                   return ToggleButtons(
+                    isSelected: [
+                      selectedSearchIndex == 0,
+                      selectedSearchIndex == 1,
+                    ],
+                    onPressed: (int index) {
+                      setState(() {
+                        selectedSearchIndex = index;
+                      });
+                    },
+                    borderRadius: BorderRadius.circular(15.0),
                     children: [
                       Container(
                         width: constraints.maxWidth / 2 - 1.5,
@@ -131,16 +149,6 @@ class _CrossRefSearchFormState extends State<CrossRefSearchForm> {
                         child: Text(AppLocalizations.of(context)!.searchByDOI),
                       ),
                     ],
-                    isSelected: [
-                      selectedSearchIndex == 0,
-                      selectedSearchIndex == 1,
-                    ],
-                    onPressed: (int index) {
-                      setState(() {
-                        selectedSearchIndex = index;
-                      });
-                    },
-                    borderRadius: BorderRadius.circular(15.0),
                   );
                 },
               ),
@@ -155,7 +163,6 @@ class _CrossRefSearchFormState extends State<CrossRefSearchForm> {
       floatingActionButton: FloatingActionButton(
         onPressed: _handleSearch,
         child: Icon(Icons.search),
-        shape: CircleBorder(),
       ),
     );
   }

lib/widgets/article_openAlex_search_form.dart

@@ -438,7 +438,6 @@ class _OpenAlexSearchFormState extends State<OpenAlexSearchForm> {
       floatingActionButton: FloatingActionButton(
         onPressed: _executeSearch,
         child: Icon(Icons.search),
-        shape: CircleBorder(),
       ),
     );
   }

lib/widgets/article_search_form.dart

@@ -1,13 +1,15 @@
 import 'package:flutter/material.dart';
-import './article_crossref_search_form.dart';
-import './article_openAlex_search_form.dart';
+import 'package:wispar/widgets/article_crossref_search_form.dart';
+import 'package:wispar/widgets/article_openAlex_search_form.dart';
 
 class ArticleSearchScreen extends StatefulWidget {
+  const ArticleSearchScreen({super.key});
+
   @override
-  _ArticleSearchScreenState createState() => _ArticleSearchScreenState();
+  ArticleSearchScreenState createState() => ArticleSearchScreenState();
 }
 
-class _ArticleSearchScreenState extends State<ArticleSearchScreen> {
+class ArticleSearchScreenState extends State<ArticleSearchScreen> {
   int selectedProviderIndex = 0; // 0 = OpenAlex, 1 = Crossref
 
   @override

lib/widgets/journal_header.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
-import '../generated_l10n/app_localizations.dart';
-import '../models/crossref_journals_models.dart' as Journals;
-import './journal_follow_button.dart';
+import 'package:wispar/generated_l10n/app_localizations.dart';
+import 'package:wispar/models/crossref_journals_models.dart' as Journals;
+import 'package:wispar/widgets/journal_follow_button.dart';
 
 class JournalInfoHeader extends SliverPersistentHeaderDelegate {
   final String title;
@@ -57,8 +57,9 @@ class JournalInfoHeader extends SliverPersistentHeaderDelegate {
                     crossAxisAlignment: CrossAxisAlignment.start,
                     children: [
                       SizedBox(height: 8.0),
-                      Text(
-                          '${AppLocalizations.of(context)!.publisher}: ${publisher}'),
+                      if (publisher.isNotEmpty)
+                        Text(AppLocalizations.of(context)!
+                            .publisherName(publisher)),
                       Text('ISSN: ${issn}'),
                       SizedBox(height: 8.0),
                     ],