fix: in new courses, set course_user state event power level to 0 (#3882)

lib/pages/chat/chat_view.dart

@@ -339,7 +339,11 @@ class ChatView extends StatelessWidget {
                                 child: ChatEventList(controller: controller),
                               ),
                             ),
-                            if (controller.showScrollDownButton)
+                            // #Pangea
+                            // if (controller.showScrollDownButton)
+                            if (controller.showScrollDownButton &&
+                                !controller.room.showActivityFinished)
+                              // Pangea#
                               Divider(
                                 height: 1,
                                 color: theme.dividerColor,
@@ -354,8 +358,13 @@ class ChatView extends StatelessWidget {
                                   onPressed: controller.goToNewRoomAction,
                                 ),
                               )
+                            // #Pangea
+                            // else if (controller.room.canSendDefaultMessages &&
+                            //     controller.room.membership == Membership.join)
                             else if (controller.room.canSendDefaultMessages &&
-                                controller.room.membership == Membership.join)
+                                controller.room.membership == Membership.join &&
+                                !controller.room.showActivityFinished)
+                              // Pangea#
                               Container(
                                 margin: EdgeInsets.all(bottomSheetPadding),
                                 constraints: const BoxConstraints(

lib/pages/chat_permissions_settings/chat_permissions_settings_view.dart

@@ -50,7 +50,12 @@ class ChatPermissionsSettingsView extends StatelessWidget {
               controller.defaultPowerLevels,
             );
 
-            final excludedEvents = [PangeaEventTypes.activityRole];
+            final excludedEvents = [
+              PangeaEventTypes.activityRole,
+              PangeaEventTypes.activitySummary,
+              PangeaEventTypes.coursePlan,
+              PangeaEventTypes.courseUser,
+            ];
 
             Map<String, dynamic> missingPowerLevels = Map<String, dynamic>.from(
               defaults,

lib/pangea/activity_sessions/activity_room_extension.dart

@@ -329,6 +329,9 @@ extension ActivityRoomExtension on Room {
 
   bool get isActivitySession => isActivityRoomType || activityPlan != null;
 
+  bool get showActivityFinished =>
+      showActivityChatUI && ownRole != null && hasCompletedActivity;
+
   Future<ActivitySummaryAnalyticsModel> getActivityAnalytics() async {
     // wait for local storage box to init in getAnalytics initialization
     if (!MatrixState.pangeaController.getAnalytics.initCompleter.isCompleted) {

lib/pangea/activity_sessions/activity_session_chat/activity_finished_status_message.dart

@@ -76,9 +76,7 @@ class ActivityFinishedStatusMessage extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    if (!controller.room.showActivityChatUI ||
-        controller.room.ownRole == null ||
-        !controller.room.hasCompletedActivity) {
+    if (!controller.room.showActivityFinished) {
       return const SizedBox.shrink();
     }
 
@@ -86,7 +84,6 @@ class ActivityFinishedStatusMessage extends StatelessWidget {
     return AnimatedSize(
       duration: FluffyThemes.animationDuration,
       child: Container(
-        margin: const EdgeInsets.only(top: 20.0),
         padding: const EdgeInsets.all(12.0),
         decoration: BoxDecoration(
           color: theme.colorScheme.surface,
@@ -96,7 +93,9 @@ class ActivityFinishedStatusMessage extends StatelessWidget {
         ),
         child: Center(
           child: ConstrainedBox(
-            constraints: const BoxConstraints(maxWidth: 400),
+            constraints: const BoxConstraints(
+              maxWidth: 400,
+            ),
             child: Column(
               spacing: 12.0,
               mainAxisSize: MainAxisSize.min,

lib/pangea/chat/constants/default_power_level.dart

@@ -70,6 +70,7 @@ class RoomDefaults {
           "invite": 50,
           "redact": 50,
           "events": {
+            PangeaEventTypes.courseUser: 100,
             "m.room.power_levels": 100,
             "m.room.join_rules": 100,
             "m.space.child": spaceChild,