Merge pull request #393 from pangeachat/analytics-target-languages

populate space analytics language dropdown from space student's analy…

lib/pangea/extensions/pangea_room_extension/pangea_room_extension.dart

@@ -4,14 +4,17 @@ import 'dart:developer';
 import 'package:adaptive_dialog/adaptive_dialog.dart';
 import 'package:collection/collection.dart';
 import 'package:fluffychat/pangea/constants/class_default_values.dart';
+import 'package:fluffychat/pangea/constants/language_keys.dart';
 import 'package:fluffychat/pangea/constants/model_keys.dart';
 import 'package:fluffychat/pangea/constants/pangea_room_types.dart';
+import 'package:fluffychat/pangea/controllers/language_list_controller.dart';
 import 'package:fluffychat/pangea/matrix_event_wrappers/pangea_message_event.dart';
 import 'package:fluffychat/pangea/models/analytics/analytics_event.dart';
 import 'package:fluffychat/pangea/models/analytics/constructs_event.dart';
 import 'package:fluffychat/pangea/models/analytics/summary_analytics_event.dart';
 import 'package:fluffychat/pangea/models/analytics/summary_analytics_model.dart';
 import 'package:fluffychat/pangea/models/bot_options_model.dart';
+import 'package:fluffychat/pangea/models/language_model.dart';
 import 'package:fluffychat/pangea/models/space_model.dart';
 import 'package:fluffychat/pangea/models/tokens_event_content_model.dart';
 import 'package:fluffychat/pangea/utils/bot_name.dart';
@@ -129,6 +132,9 @@ extension PangeaRoom on Room {
 
   Event? get pangeaRoomRulesStateEvent => _pangeaRoomRulesStateEvent;
 
+  Future<List<LanguageModel>> targetLanguages() async =>
+      await _targetLanguages();
+
 // events
 
   Future<bool> leaveIfFull() async => await _leaveIfFull();

lib/pangea/extensions/pangea_room_extension/space_settings_extension.dart

@@ -92,6 +92,34 @@ extension SpaceRoomExtension on Room {
     return null;
   }
 
+  Future<List<LanguageModel>> _targetLanguages() async {
+    await requestParticipants();
+    final students = _students;
+
+    final Map<LanguageModel, int> langCounts = {};
+    final List<Room> allRooms = client.rooms;
+    for (final User student in students) {
+      for (final Room room in allRooms) {
+        if (!room.isAnalyticsRoomOfUser(student.id)) continue;
+        final String? langCode = room.madeForLang;
+        if (langCode == null ||
+            langCode.isEmpty ||
+            langCode == LanguageKeys.unknownLanguage) {
+          continue;
+        }
+        final LanguageModel lang = PangeaLanguage.byLangCode(langCode);
+        langCounts[lang] ??= 0;
+        langCounts[lang] = langCounts[lang]! + 1;
+      }
+    }
+    // get a list of language models, sorted
+    // by the number of students who are learning that language
+    return langCounts.entries.map((entry) => entry.key).toList()
+      ..sort(
+        (a, b) => langCounts[b]!.compareTo(langCounts[a]!),
+      );
+  }
+
   // DateTime? get _languageSettingsUpdatedAt {
   //   if (!isSpace) return null;
   //   return languageSettingsStateEvent?.originServerTs ?? creationTime;

lib/pangea/pages/analytics/base_analytics.dart

@@ -25,8 +25,9 @@ class BaseAnalyticsPage extends StatefulWidget {
   final AnalyticsSelected defaultSelected;
   final AnalyticsSelected? alwaysSelected;
   final StudentAnalyticsController? myAnalyticsController;
+  final List<LanguageModel> targetLanguages;
 
-  const BaseAnalyticsPage({
+  BaseAnalyticsPage({
     super.key,
     required this.pageTitle,
     required this.tabs,
@@ -34,7 +35,10 @@ class BaseAnalyticsPage extends StatefulWidget {
     required this.defaultSelected,
     this.selectedView,
     this.myAnalyticsController,
-  });
+    targetLanguages,
+  }) : targetLanguages = (targetLanguages?.isNotEmpty ?? false)
+            ? targetLanguages
+            : MatrixState.pangeaController.pLanguageStore.targetOptions;
 
   @override
   State<BaseAnalyticsPage> createState() => BaseAnalyticsController();

lib/pangea/pages/analytics/base_analytics_view.dart

@@ -128,8 +128,7 @@ class BaseAnalyticsView extends StatelessWidget {
                           value: controller.pangeaController.analytics
                               .currentAnalyticsSpaceLang,
                           onChange: (lang) => controller.toggleSpaceLang(lang),
-                          languages: controller
+                          languages: controller.widget.targetLanguages,
-                              .pangeaController.pLanguageStore.targetOptions,
                         ),
                     ],
                   ),

lib/pangea/pages/analytics/space_analytics/space_analytics.dart

@@ -4,6 +4,7 @@ import 'dart:developer';
 import 'package:fluffychat/pangea/constants/pangea_room_types.dart';
 import 'package:fluffychat/pangea/enum/bar_chart_view_enum.dart';
 import 'package:fluffychat/pangea/extensions/pangea_room_extension/pangea_room_extension.dart';
+import 'package:fluffychat/pangea/models/language_model.dart';
 import 'package:fluffychat/pangea/utils/error_handler.dart';
 import 'package:fluffychat/pangea/widgets/common/list_placeholder.dart';
 import 'package:fluffychat/pangea/widgets/common/p_circular_loader.dart';
@@ -33,6 +34,18 @@ class SpaceAnalyticsV2Controller extends State<SpaceAnalyticsPage> {
   List<User> students = [];
   String? get spaceId => GoRouterState.of(context).pathParameters['spaceid'];
   Room? _spaceRoom;
+  List<LanguageModel> targetLanguages = [];
+
+  @override
+  void initState() {
+    super.initState();
+    Future.delayed(Duration.zero, () async {
+      if (spaceRoom == null || (!(spaceRoom?.isSpace ?? false))) {
+        context.go('/rooms');
+      }
+      getChatAndStudents();
+    });
+  }
 
   Room? get spaceRoom {
     if (_spaceRoom == null || _spaceRoom!.id != spaceId) {
@@ -44,23 +57,11 @@ class SpaceAnalyticsV2Controller extends State<SpaceAnalyticsPage> {
         context.go('/rooms/analytics');
         return null;
       }
-      getChatAndStudents();
+      getChatAndStudents().then((_) => setTargetLanguages());
     }
     return _spaceRoom;
   }
 
-  @override
-  void initState() {
-    super.initState();
-    debugPrint("init space analytics");
-    Future.delayed(Duration.zero, () async {
-      if (spaceRoom == null || (!(spaceRoom?.isSpace ?? false))) {
-        context.go('/rooms');
-      }
-      getChatAndStudents();
-    });
-  }
-
   Future<void> getChatAndStudents() async {
     try {
       await spaceRoom?.postLoad();
@@ -97,12 +98,12 @@ class SpaceAnalyticsV2Controller extends State<SpaceAnalyticsPage> {
     }
   }
 
-  // @override
+  Future<void> setTargetLanguages() async {
-  // void dispose() {
+    // get a list of language models, sorted by the
-  //   super.dispose();
+    // number of students who are learning that language
-  //   refreshTimer?.cancel();
+    targetLanguages = await spaceRoom?.targetLanguages() ?? [];
-  //   stateSub?.cancel();
+    setState(() {});
-  // }
+  }
 
   @override
   Widget build(BuildContext context) {

lib/pangea/pages/analytics/space_analytics/space_analytics_view.dart

@@ -59,6 +59,7 @@ class SpaceAnalyticsView extends StatelessWidget {
               AnalyticsEntryType.space,
               controller.spaceRoom?.name ?? "",
             ),
+            targetLanguages: controller.targetLanguages,
           )
         : const SizedBox();
   }

lib/pangea/pages/analytics/space_list/space_list.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 
 import 'package:fluffychat/pangea/enum/time_span.dart';
 import 'package:fluffychat/pangea/extensions/client_extension/client_extension.dart';
+import 'package:fluffychat/pangea/extensions/pangea_room_extension/pangea_room_extension.dart';
 import 'package:fluffychat/pangea/models/language_model.dart';
 import 'package:fluffychat/pangea/pages/analytics/space_list/space_list_view.dart';
 import 'package:flutter/material.dart';
@@ -22,26 +23,47 @@ class AnalyticsSpaceList extends StatefulWidget {
 class AnalyticsSpaceListController extends State<AnalyticsSpaceList> {
   PangeaController pangeaController = MatrixState.pangeaController;
   List<Room> spaces = [];
+  List<LanguageModel> targetLanguages = [];
 
   @override
   void initState() {
     super.initState();
-    Matrix.of(context).client.spacesImTeaching.then((spaceList) {
+
-      spaceList = spaceList
+    setSpaceList().then((_) => setTargetLanguages());
-          .where(
-            (space) => !spaceList.any(
-              (parentSpace) => parentSpace.spaceChildren
-                  .any((child) => child.roomId == space.id),
-            ),
-          )
-          .toList();
-      spaces = spaceList;
-      setState(() {});
-    });
   }
 
   StreamController refreshStream = StreamController.broadcast();
 
+  Future<void> setSpaceList() async {
+    final spaceList = await Matrix.of(context).client.spacesImTeaching;
+    spaces = spaceList
+        .where(
+          (space) => !spaceList.any(
+            (parentSpace) => parentSpace.spaceChildren
+                .any((child) => child.roomId == space.id),
+          ),
+        )
+        .toList();
+    setState(() {});
+  }
+
+  Future<void> setTargetLanguages() async {
+    if (spaces.isEmpty) return;
+    final Map<LanguageModel, int> langCounts = {};
+    for (final Room space in spaces) {
+      final List<LanguageModel> targetLangs = await space.targetLanguages();
+      for (final LanguageModel lang in targetLangs) {
+        langCounts[lang] ??= 0;
+        langCounts[lang] = langCounts[lang]! + 1;
+      }
+    }
+    targetLanguages = langCounts.entries.map((entry) => entry.key).toList()
+      ..sort(
+        (a, b) => langCounts[b]!.compareTo(langCounts[a]!),
+      );
+    setState(() {});
+  }
+
   void toggleTimeSpan(BuildContext context, TimeSpan timeSpan) {
     pangeaController.analytics.setCurrentAnalyticsTimeSpan(timeSpan);
     refreshStream.add(false);

lib/pangea/pages/analytics/space_list/space_list_view.dart

@@ -45,7 +45,9 @@ class AnalyticsSpaceListView extends StatelessWidget {
             value:
                 controller.pangeaController.analytics.currentAnalyticsSpaceLang,
             onChange: (lang) => controller.toggleSpaceLang(lang),
-            languages: controller.pangeaController.pLanguageStore.targetOptions,
+            languages: controller.targetLanguages.isEmpty
+                ? controller.pangeaController.pLanguageStore.targetOptions
+                : controller.targetLanguages,
           ),
         ],
       ),