Do not allow forwarding of unsupported content to stories.

app/src/main/java/org/thoughtcrime/securesms/conversation/mutiselect/forward/MultiselectForwardFragment.kt

@@ -269,16 +269,18 @@ class MultiselectForwardFragment :
     return ContactSearchConfiguration.build {
       query = contactSearchState.query
 
-      addSection(
-        ContactSearchConfiguration.Section.Stories(
-          groupStories = contactSearchState.groupStories,
-          includeHeader = true,
-          headerAction = getHeaderAction(),
-          expandConfig = ContactSearchConfiguration.ExpandConfig(
-            isExpanded = contactSearchState.expandedSections.contains(ContactSearchConfiguration.SectionKey.STORIES)
+      if (FeatureFlags.stories() && isSelectedMediaValidForStories()) {
+        addSection(
+          ContactSearchConfiguration.Section.Stories(
+            groupStories = contactSearchState.groupStories,
+            includeHeader = true,
+            headerAction = getHeaderAction(),
+            expandConfig = ContactSearchConfiguration.ExpandConfig(
+              isExpanded = contactSearchState.expandedSections.contains(ContactSearchConfiguration.SectionKey.STORIES)
+            )
           )
         )
-      )
+      }
 
       if (query.isNullOrEmpty()) {
         addSection(
@@ -309,6 +311,10 @@ class MultiselectForwardFragment :
     return Util.isDefaultSmsProvider(requireContext()) && requireArguments().getBoolean(ARG_CAN_SEND_TO_NON_PUSH)
   }
 
+  private fun isSelectedMediaValidForStories(): Boolean {
+    return getMultiShareArgs().all { it.isValidForStories }
+  }
+
   override fun onGroupStoryClicked() {
     ChooseGroupStoryBottomSheet().show(parentFragmentManager, ChooseGroupStoryBottomSheet.GROUP_STORY)
   }

app/src/main/java/org/thoughtcrime/securesms/sharing/MultiShareArgs.java

@@ -126,6 +126,10 @@ public final class MultiShareArgs implements Parcelable {
     return expiresAt;
   }
 
+  public boolean isValidForStories() {
+    return !media.isEmpty() && media.stream().allMatch(m -> MediaUtil.isImageOrVideoType(m.getMimeType()) && !MediaUtil.isGif(m.getMimeType()));
+  }
+
   public @NonNull InterstitialContentType getInterstitialContentType() {
     if (!requiresInterstitial()) {
       return InterstitialContentType.NONE;