feat: remove gmail prefix in folder structure

Author: shamim-emon

feature/navigation/drawer/dropdown/src/main/kotlin/net/thunderbird/feature/navigation/drawer/dropdown/domain/usecase/GetDisplayTreeFolder.kt

@@ -54,7 +54,14 @@ internal class GetDisplayTreeFolder : UseCase.GetDisplayTreeFolder {
         paths: List<Pair<List<String>, DisplayAccountFolder>>,
         parentPath: String = "",
     ): List<DisplayTreeFolder> {
-        return paths.groupBy { it.first.getOrNull(0) ?: "(Unnamed)" }
+        return paths
+            .map {
+                Pair(
+                    it.first.filter { name -> name != "[Gmail]" },
+                    it.second,
+                )
+            }
+            .groupBy { it.first.getOrNull(0) ?: "(Unnamed)" }
             .map { (segment, entries) ->
                 val childPaths = entries.mapNotNull { (segments, folders) ->
                     if (segments.size > 1) {

legacy/ui/folder/src/main/java/app/k9mail/legacy/ui/folder/FolderNameFormatter.kt

@@ -19,16 +19,18 @@ class FolderNameFormatter(private val resources: Resources) {
         FolderType.DRAFTS -> resources.getString(R.string.special_mailbox_name_drafts)
         FolderType.SENT -> resources.getString(R.string.special_mailbox_name_sent)
         FolderType.TRASH -> resources.getString(R.string.special_mailbox_name_trash)
-        else -> folder.name
+        else -> folder.name.removeGmailPrefix()
     }
 
     private fun remoteFolderDisplayName(folder: Folder) = when (folder.type) {
         FolderType.INBOX -> resources.getString(R.string.special_mailbox_name_inbox)
-        else -> folder.name
+        else -> folder.name.removeGmailPrefix()
     }
 
     fun displayName(folder: RemoteFolder) = when (folder.type) {
         FolderType.INBOX -> resources.getString(R.string.special_mailbox_name_inbox)
-        else -> folder.name
+        else -> folder.name.removeGmailPrefix()
     }
 }
+
+private fun String.removeGmailPrefix(): String = this.replace("[Gmail]/", "")