Add filtering to courses

lib/src/common/services/constants.dart

@@ -36,6 +36,7 @@ class Constants {
   static const kMoodleUrlOpenLoading = 'Launching Moodle website...';
   static const kMorePanelGrouping = 'Group By';
   static const kMorePanelSorting = 'Sort By';
+  static const kMorePanelFiltering = 'Filter By';
   static const kMorePanelSync = 'Sync With Moodle';
   static const kMorePanelAddEvent = 'Add Custom Event';
   static const kAddReminder = 'Add Reminder';

lib/src/common/services/moodle_extra.dart

@@ -12,6 +12,9 @@ enum MoodleEventGroupingType { byTime, byCourse, none }
 /// Moodle courses sorting type.
 enum MoodleCourseSortingType { byCourseCode, byLastAccessed }
 
+/// Moodle courses filtering type.
+enum MoodleCourseFilteringType { none, byLatestSemester }
+
 /// Moodle storage keys.
 class MoodleStorageKeys {
   static const wstoken = 'moodle_wstoken';

lib/src/common/services/moodle_managers.dart

@@ -61,6 +61,7 @@ class MoodleCourseManager with ChangeNotifier {
   /// Sorted courses given a sorting type.
   List<MoodleCourse> sortedCourses(
       {MoodleCourseSortingType sortBy = MoodleCourseSortingType.byCourseCode,
+      MoodleCourseFilteringType filterBy = MoodleCourseFilteringType.none,
       bool showFavoriteOnly = false}) {
     late List<MoodleCourse> sortedCourses;
     if (_sortedCoursesCache[sortBy] != null) {
@@ -84,7 +85,47 @@ class MoodleCourseManager with ChangeNotifier {
     if (showFavoriteOnly) {
       sortedCourses =
           sortedCourses.where((c) => c.customFavorite ?? false).toList();
+    } else if (filterBy == MoodleCourseFilteringType.byLatestSemester) {
+      int? latestYear, latestSemester;
+      Map<num, List<int>> coursesYearAndSemester = {};
+
+      for (final course in sortedCourses) {
+        var groups =
+            RegExp(r'^(.*)_(\w{0,3})_(\d{4})$').firstMatch(course.idnumber);
+
+        final year = int.tryParse(groups?.group(3) ?? "0");
+
+        String? semString = groups?.group(2)?[0];
+        // Check if it is summer semester
+        if (semString != null && semString.toLowerCase() == "s") {
+          semString = "3";
+        }
+
+        final sem = int.tryParse(semString ?? "0");
+
+        if (year != null && sem != null) {
+          coursesYearAndSemester[course.id] = [year, sem];
+
+          if (latestYear == null || year > latestYear) {
+            latestYear = year;
+            latestSemester = sem;
+          } else if (year == latestYear && sem > latestSemester!) {
+            latestSemester = sem;
+          }
+        }
+      }
+
+      // TODO should this be cached ?
+      if (latestYear != null) {
+        sortedCourses = sortedCourses
+            .where((c) =>
+                coursesYearAndSemester.containsKey(c.id) &&
+                coursesYearAndSemester[c.id]!.first == latestYear &&
+                coursesYearAndSemester[c.id]!.last == latestSemester)
+            .toList();
+      }
     }
+
     return sortedCourses;
   }
 

lib/src/common/services/settings.dart

@@ -13,6 +13,7 @@ class SettingsKey {
   static const String deadlineDisplay = 'settings_deadline_display';
   static const String eventGroupingType = 'settings_event_grouping';
   static const String courseSortingType = 'settings_course_sorting';
+  static const String courseFilteringType = 'settings_course_filtering';
   static const String onlyShowResourcesInCourses =
       'settings_only_show_resources';
   static const String showFavoriteCoursesByDefault =

lib/src/routes/courses/courses.dart

@@ -84,6 +84,40 @@ class _CoursesPageState extends State<CoursesPage> {
               ),
             ),
           ),
+          if (!_showFavorite)
+            MorePanelElement(
+              title: Constants.kMorePanelFiltering,
+              icon: const Icon(Icons.filter_alt_outlined),
+              extendedView: Padding(
+                padding: const EdgeInsets.only(bottom: 3.0),
+                child: SizedBox(
+                  height: 35,
+                  width: double.infinity,
+                  child: ToggleSwitch(
+                    minWidth: double.infinity,
+                    customTextStyles: [TextStylePresets.body()],
+                    initialLabelIndex: context.settingsValue<int>(
+                            SettingsKey.courseFilteringType) ??
+                        0,
+                    dividerColor: Colors.transparent,
+                    activeBgColor: const [ColorPresets.primary],
+                    activeFgColor: Colors.white,
+                    inactiveBgColor: context.cuckooTheme.secondaryTransBg,
+                    inactiveFgColor: context.cuckooTheme.primaryText,
+                    totalSwitches: 2,
+                    radiusStyle: true,
+                    cornerRadius: 10.0,
+                    labels: const ['None', 'Latest Semester'],
+                    onToggle: (index) {
+                      if (index != null) {
+                        Settings()
+                            .set<int>(SettingsKey.courseFilteringType, index);
+                      }
+                    },
+                  ),
+                ),
+              ),
+            ),
           MorePanelElement(
             title: Constants.kMorePanelSync,
             icon: const Icon(Icons.sync_rounded),

lib/src/routes/courses/courses_collection.dart

@@ -53,6 +53,8 @@ class _MoodleCourseCollectionViewState
     courses = context.courseManager.sortedCourses(
         sortBy: MoodleCourseSortingType.values[
             context.settingsValue<int>(SettingsKey.courseSortingType) ?? 0],
+        filterBy: MoodleCourseFilteringType.values[
+            context.settingsValue<int>(SettingsKey.courseFilteringType) ?? 0],
         showFavoriteOnly: widget.showFavoriteOnly);
 
     if (courses.isEmpty) {

pubspec.lock

@@ -540,26 +540,26 @@ packages:
     dependency: transitive
     description:
       name: leak_tracker
-      sha256: "78eb209deea09858f5269f5a5b02be4049535f568c07b275096836f01ea323fa"
+      sha256: "7f0df31977cb2c0b88585095d168e689669a2cc9b97c309665e3386f3e9d341a"
       url: "https://pub.dev"
     source: hosted
-    version: "10.0.0"
+    version: "10.0.4"
   leak_tracker_flutter_testing:
     dependency: transitive
     description:
       name: leak_tracker_flutter_testing
-      sha256: b46c5e37c19120a8a01918cfaf293547f47269f7cb4b0058f21531c2465d6ef0
+      sha256: "06e98f569d004c1315b991ded39924b21af84cf14cc94791b8aea337d25b57f8"
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.1"
+    version: "3.0.3"
   leak_tracker_testing:
     dependency: transitive
     description:
       name: leak_tracker_testing
-      sha256: a597f72a664dbd293f3bfc51f9ba69816f84dcd403cdac7066cb3f6003f3ab47
+      sha256: "6ba465d5d76e67ddf503e1161d1f4a6bc42306f9d66ca1e8f079a47290fb06d3"
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.1"
+    version: "3.0.1"
   lints:
     dependency: transitive
     description:
@@ -612,10 +612,10 @@ packages:
     dependency: transitive
     description:
       name: meta
-      sha256: d584fa6707a52763a52446f02cc621b077888fb63b93bbcb1143a7be5a0c0c04
+      sha256: "7687075e408b093f36e6bbf6c91878cc0d4cd10f409506f7bc996f68220b9136"
       url: "https://pub.dev"
     source: hosted
-    version: "1.11.0"
+    version: "1.12.0"
   mime:
     dependency: transitive
     description:
@@ -1025,10 +1025,10 @@ packages:
     dependency: transitive
     description:
       name: test_api
-      sha256: "5c2f730018264d276c20e4f1503fd1308dfbbae39ec8ee63c5236311ac06954b"
+      sha256: "9955ae474176f7ac8ee4e989dadfb411a58c30415bcfb648fa04b2b8a03afa7f"
       url: "https://pub.dev"
     source: hosted
-    version: "0.6.1"
+    version: "0.7.0"
   timezone:
     dependency: "direct main"
     description:
@@ -1201,10 +1201,10 @@ packages:
     dependency: transitive
     description:
       name: vm_service
-      sha256: b3d56ff4341b8f182b96aceb2fa20e3dcb336b9f867bc0eafc0de10f1048e957
+      sha256: "3923c89304b715fb1eb6423f017651664a03bf5f4b29983627c4da791f74a4ec"
       url: "https://pub.dev"
     source: hosted
-    version: "13.0.0"
+    version: "14.2.1"
   watcher:
     dependency: transitive
     description: