fix: update download page after getting course structure on outline page

Author: PavloNetrebchuk

app/src/main/java/org/openedx/app/di/ScreenModule.kt

@@ -525,6 +525,7 @@ val screenModule = module {
             fileUtil = get(),
             analytics = get(),
             discoveryNotifier = get(),
+            courseNotifier = get(),
             router = get()
         )
     }

core/src/main/java/org/openedx/core/system/notifier/CourseNotifier.kt

@@ -12,6 +12,7 @@ class CourseNotifier {
 
     suspend fun send(event: CourseVideoPositionChanged) = channel.emit(event)
     suspend fun send(event: CourseStructureUpdated) = channel.emit(event)
+    suspend fun send(event: CourseStructureGot) = channel.emit(event)
     suspend fun send(event: CourseSubtitleLanguageChanged) = channel.emit(event)
     suspend fun send(event: CourseSectionChanged) = channel.emit(event)
     suspend fun send(event: CourseCompletionSet) = channel.emit(event)

core/src/main/java/org/openedx/core/system/notifier/CourseStructureGot.kt

@@ -0,0 +1,5 @@
+package org.openedx.core.system.notifier
+
+class CourseStructureGot(
+    val courseId: String
+) : CourseEvent

course/src/main/java/org/openedx/course/presentation/container/CourseContainerViewModel.kt

@@ -3,6 +3,7 @@ package org.openedx.course.presentation.container
 import android.graphics.Bitmap
 import android.graphics.drawable.BitmapDrawable
 import android.os.Build
+import androidx.core.graphics.createBitmap
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.viewModelScope
@@ -35,6 +36,7 @@ import org.openedx.core.system.notifier.CourseDatesShifted
 import org.openedx.core.system.notifier.CourseLoading
 import org.openedx.core.system.notifier.CourseNotifier
 import org.openedx.core.system.notifier.CourseOpenBlock
+import org.openedx.core.system.notifier.CourseStructureGot
 import org.openedx.core.system.notifier.CourseStructureUpdated
 import org.openedx.core.system.notifier.RefreshDates
 import org.openedx.core.system.notifier.RefreshDiscussions
@@ -116,7 +118,7 @@ class CourseContainerViewModel(
     val calendarSyncUIState: StateFlow<CalendarSyncUIState> =
         _calendarSyncUIState.asStateFlow()
 
-    private var _courseImage = MutableStateFlow(Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888))
+    private var _courseImage = MutableStateFlow(createBitmap(1, 1))
     val courseImage: StateFlow<Bitmap> = _courseImage.asStateFlow()
 
     val hasInternetConnection: Boolean
@@ -187,6 +189,7 @@ class CourseContainerViewModel(
                     courseStructure != null -> handleCourseStructureOnly(courseStructure)
                     else -> _courseAccessStatus.value = CourseAccessError.UNKNOWN
                 }
+                courseNotifier.send(CourseStructureGot(courseId))
             }
         }
     }

downloads/src/main/java/org/openedx/downloads/presentation/download/DownloadsViewModel.kt

@@ -36,6 +36,9 @@ import org.openedx.core.presentation.dialog.downloaddialog.DownloadDialogItem
 import org.openedx.core.presentation.dialog.downloaddialog.DownloadDialogManager
 import org.openedx.core.system.connection.NetworkConnection
 import org.openedx.core.system.notifier.CourseDashboardUpdate
+import org.openedx.core.system.notifier.CourseNotifier
+import org.openedx.core.system.notifier.CourseStructureGot
+import org.openedx.core.system.notifier.CourseStructureUpdated
 import org.openedx.core.system.notifier.DiscoveryNotifier
 import org.openedx.downloads.domain.interactor.DownloadInteractor
 import org.openedx.downloads.presentation.DownloadsRouter
@@ -54,6 +57,7 @@ class DownloadsViewModel(
     private val config: Config,
     private val analytics: DownloadsAnalytics,
     private val discoveryNotifier: DiscoveryNotifier,
+    private val courseNotifier: CourseNotifier,
     private val router: DownloadsRouter,
     preferencesManager: CorePreferences,
     coreAnalytics: CoreAnalytics,
@@ -86,6 +90,7 @@ class DownloadsViewModel(
         observeCourseDashboardUpdates()
         observeDownloadingModels()
         observeDownloadModelsStatus()
+        observeCourseStructureUpdates()
     }
 
     private fun observeCourseDashboardUpdates() {
@@ -98,6 +103,22 @@ class DownloadsViewModel(
         }
     }
 
+    private fun observeCourseStructureUpdates() {
+        viewModelScope.launch {
+            courseNotifier.notifier.collect { notifier ->
+                when (notifier) {
+                    is CourseStructureGot -> {
+                        fetchDownloads(refresh = true)
+                    }
+
+                    is CourseStructureUpdated -> {
+                        fetchDownloads(refresh = true)
+                    }
+                }
+            }
+        }
+    }
+
     private fun observeDownloadingModels() {
         viewModelScope.launch {
             downloadingModelsFlow.collect { downloadModels ->