feat: Hide snoozed folder if empty

Author: LunarX

app/src/main/java/com/infomaniak/mail/data/cache/mailboxContent/CustomRefreshStrategies.kt

@@ -41,12 +41,17 @@ val inboxRefreshStrategy = object : DefaultRefreshStrategy {
     }
 }
 
+val scheduledDraftRefreshStrategy = object : DefaultRefreshStrategy {
+    override fun shouldHideEmptyFolder(): Boolean = true
+}
+
 val snoozeRefreshStrategy = object : DefaultRefreshStrategy {
     override fun queryFolderThreads(folderId: String, realm: TypedRealm): List<Thread> {
         return ThreadController.getInboxThreadsWithSnoozeFilter(withSnooze = true, realm = realm)
     }
 
     override fun otherFolderRolesToQueryThreads(): List<Folder.FolderRole> = listOf(Folder.FolderRole.INBOX)
+    override fun shouldHideEmptyFolder(): Boolean = true
 
     override fun getMessageFromShortUid(shortUid: String, folderId: String, realm: TypedRealm): Message? {
         val inboxId = FolderController.getFolder(Folder.FolderRole.INBOX, realm)?.id ?: return null

app/src/main/java/com/infomaniak/mail/data/cache/mailboxContent/RefreshController.kt

@@ -560,7 +560,10 @@ class RefreshController @Inject constructor(
         }
     }
 
-    private inline fun <reified T : MessageFlags> getMessagesUidsDelta(folderId: String, previousCursor: String): ActivitiesResult<T>? {
+    private inline fun <reified T : MessageFlags> getMessagesUidsDelta(
+        folderId: String,
+        previousCursor: String,
+    ): ActivitiesResult<T>? {
         return with(ApiRepository.getMessagesUidsDelta<T>(mailbox.uuid, folderId, previousCursor, okHttpClient)) {
             if (!isSuccess()) throwErrorAsException()
             return@with data
@@ -650,18 +653,23 @@ class RefreshController @Inject constructor(
 
         getUpToDateFolder(folderId).let { currentFolder ->
             currentFolder.threads.replaceContent(list = allCurrentFolderThreads)
-            if (currentFolder.role == FolderRole.SCHEDULED_DRAFTS) currentFolder.isDisplayed = currentFolder.threads.isNotEmpty()
+            if (currentFolderRefreshStrategy.shouldHideEmptyFolder()) {
+                currentFolder.isDisplayed = currentFolder.threads.isNotEmpty()
+            }
             extraFolderUpdates?.invoke(currentFolder)
         }
 
         // Some folders such as inbox and snooze require to query again the other folder's threads as well. For example, if a
         // message uid is returned as "added" or "deleted" in the snooze folder, it should disappear or appear from inbox as well.
         currentFolderRefreshStrategy.otherFolderRolesToQueryThreads().forEach { folderRole ->
             getUpToDateFolder(folderRole)?.let { otherFolder ->
-                val allOtherFolderThreads = otherFolder.refreshStrategy().queryFolderThreads(folderId, realm = this)
+                val otherFolderRefreshStrategy = otherFolder.refreshStrategy()
+                val allOtherFolderThreads = otherFolderRefreshStrategy.queryFolderThreads(folderId, realm = this)
                 otherFolder.threads.replaceContent(list = allOtherFolderThreads)
 
-                if (otherFolder.role == FolderRole.SCHEDULED_DRAFTS) otherFolder.isDisplayed = otherFolder.threads.isNotEmpty()
+                if (otherFolderRefreshStrategy.shouldHideEmptyFolder()) {
+                    otherFolder.isDisplayed = otherFolder.threads.isNotEmpty()
+                }
             }
         }
     }

app/src/main/java/com/infomaniak/mail/data/cache/mailboxContent/RefreshStrategies.kt

@@ -32,6 +32,7 @@ import kotlinx.coroutines.ensureActive
 interface RefreshStrategy {
     fun queryFolderThreads(folderId: String, realm: TypedRealm): List<Thread>
     fun otherFolderRolesToQueryThreads(): List<Folder.FolderRole>
+    fun shouldHideEmptyFolder(): Boolean
 
     fun getMessageFromShortUid(shortUid: String, folderId: String, realm: TypedRealm): Message?
 
@@ -72,6 +73,7 @@ interface DefaultRefreshStrategy : RefreshStrategy {
     }
 
     override fun otherFolderRolesToQueryThreads(): List<Folder.FolderRole> = emptyList()
+    override fun shouldHideEmptyFolder(): Boolean = false
 
     override fun getMessageFromShortUid(shortUid: String, folderId: String, realm: TypedRealm): Message? {
         return MessageController.getMessage(shortUid.toLongUid(folderId), realm)

app/src/main/java/com/infomaniak/mail/data/models/Folder.kt

@@ -149,6 +149,7 @@ class Folder : RealmObject, Cloneable {
     fun refreshStrategy(): RefreshStrategy = when (role) {
         FolderRole.INBOX -> inboxRefreshStrategy
         FolderRole.SNOOZED -> snoozeRefreshStrategy
+        FolderRole.SCHEDULED_DRAFTS -> scheduledDraftRefreshStrategy
         else -> defaultRefreshStrategy
     }