ios: group preference to prohibit files and media (#2611)

* ios: group preference to prohibit files and media

* style

apps/ios/Shared/Views/Chat/ComposeMessage/ComposeView.swift

@@ -264,7 +264,7 @@ struct ComposeView: View {
             default: previewView()
             }
             HStack (alignment: .bottom) {
-                Button {
+                let b = Button {
                     showChooseSource = true
                 } label: {
                     Image(systemName: "paperclip")
@@ -274,6 +274,17 @@ struct ComposeView: View {
                 .frame(width: 25, height: 25)
                 .padding(.bottom, 12)
                 .padding(.leading, 12)
+                if case let .group(g) = chat.chatInfo,
+                   !g.fullGroupPreferences.files.on {
+                    b.disabled(true).onTapGesture {
+                        AlertManager.shared.showAlertMsg(
+                            title: "Files and media prohibited!",
+                            message: "Only group owners can enable files and media."
+                        )
+                    }
+                } else {
+                    b
+                }
                 ZStack(alignment: .leading) {
                     SendMessageView(
                         composeState: $composeState,

apps/ios/Shared/Views/Chat/Group/GroupPreferencesView.swift

@@ -27,6 +27,8 @@ struct GroupPreferencesView: View {
                 featureSection(.directMessages, $preferences.directMessages.enable)
                 featureSection(.reactions, $preferences.reactions.enable)
                 featureSection(.voice, $preferences.voice.enable)
+//                TODO uncomment in 5.3
+//                featureSection(.files, $preferences.files.enable)
 
                 if groupInfo.canEdit {
                     Section {