ui: drop filter when no such tags exist (#5662)

* ui: drop filter when no such tags exist

* ios

* android/desktop

* change

* change

* ios

* change

* change

* ios

* android

* ios

apps/ios/Shared/Model/ChatModel.swift

@@ -123,11 +123,9 @@ class ChatTagsModel: ObservableObject {
                 }
             }
         }
-        if case let .presetTag(tag) = tm.activeFilter, (newPresetTags[tag] ?? 0) == 0 {
-            activeFilter = nil
-        }
         presetTags = newPresetTags
         unreadTags = newUnreadTags
+        clearActiveChatFilterIfNeeded()
     }
 
     func updateChatFavorite(favorite: Bool, wasFavorite: Bool) {
@@ -136,9 +134,7 @@ class ChatTagsModel: ObservableObject {
             presetTags[.favorites] = (count ?? 0) + 1
         } else if !favorite && wasFavorite, let count {
             presetTags[.favorites] = max(0, count - 1)
-            if case .presetTag(.favorites) = activeFilter, (presetTags[.favorites] ?? 0) == 0 {
-                activeFilter = nil
-            }
+            clearActiveChatFilterIfNeeded()
         }
     }
 
@@ -162,6 +158,7 @@ class ChatTagsModel: ObservableObject {
                 }
             }
         }
+        clearActiveChatFilterIfNeeded()
     }
     
     func markChatTagRead(_ chat: Chat) -> Void {
@@ -192,7 +189,17 @@ class ChatTagsModel: ObservableObject {
 
     func changeGroupReportsTag(_ by: Int = 0) {
         if by == 0 { return }
-        presetTags[.groupReports] = (presetTags[.groupReports] ?? 0) + by
+        presetTags[.groupReports] = max(0, (presetTags[.groupReports] ?? 0) + by)
+        clearActiveChatFilterIfNeeded()
+    }
+
+    func clearActiveChatFilterIfNeeded() {
+        let clear = switch activeFilter {
+        case let .presetTag(tag): (presetTags[tag] ?? 0) == 0
+        case let .userTag(tag): !userTags.contains(tag)
+        case .unread, nil: false
+        }
+        if clear { activeFilter = nil }
     }
 }
 

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/model/ChatModel.kt

@@ -247,15 +247,12 @@ object ChatModel {
       }
     }
 
-    if (activeChatTagFilter.value is ActiveFilter.PresetTag &&
-      (newPresetTags[(activeChatTagFilter.value as ActiveFilter.PresetTag).tag] ?: 0) == 0) {
-      activeChatTagFilter.value = null
-    }
-
     presetTags.clear()
     presetTags.putAll(newPresetTags)
     unreadTags.clear()
     unreadTags.putAll(newUnreadTags)
+
+    clearActiveChatFilterIfNeeded()
   }
 
   fun updateChatFavorite(favorite: Boolean, wasFavorite: Boolean) {
@@ -265,9 +262,7 @@ object ChatModel {
       presetTags[PresetTagKind.FAVORITES] = (count ?: 0) + 1
     } else if (!favorite && wasFavorite && count != null) {
       presetTags[PresetTagKind.FAVORITES] = maxOf(0, count - 1)
-      if (activeChatTagFilter.value == ActiveFilter.PresetTag(PresetTagKind.FAVORITES) && (presetTags[PresetTagKind.FAVORITES] ?: 0) == 0) {
-        activeChatTagFilter.value = null
-      }
+      clearActiveChatFilterIfNeeded()
     }
   }
 
@@ -288,6 +283,7 @@ object ChatModel {
         }
       }
     }
+    clearActiveChatFilterIfNeeded()
   }
 
   fun moveChatTagUnread(chat: Chat, oldTags: List<Long>?, newTags: List<Long>) {
@@ -875,10 +871,20 @@ object ChatModel {
 
     private fun changeGroupReportsTagNoContentTag(by: Int = 0) {
       if (by == 0 || contentTag != null) return
-      presetTags[PresetTagKind.GROUP_REPORTS] = (presetTags[PresetTagKind.GROUP_REPORTS] ?: 0) + by
+      presetTags[PresetTagKind.GROUP_REPORTS] = kotlin.math.max(0, (presetTags[PresetTagKind.GROUP_REPORTS] ?: 0) + by)
+      clearActiveChatFilterIfNeeded()
     }
   }
 
+  fun clearActiveChatFilterIfNeeded() {
+    val clear = when(val f = activeChatTagFilter.value) {
+      is ActiveFilter.PresetTag -> (presetTags[f.tag] ?: 0) == 0
+      is ActiveFilter.UserTag -> userTags.value.none { it.chatTagId == f.tag.chatTagId }
+      is ActiveFilter.Unread, null -> false
+    }
+    if (clear) activeChatTagFilter.value = null
+  }
+
   fun updateCurrentUser(rhId: Long?, newProfile: Profile, preferences: FullChatPreferences? = null) {
     val current = currentUser.value ?: return
     val updated = current.copy(

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chatlist/TagListView.kt

@@ -31,6 +31,7 @@ import chat.simplex.common.model.*
 import chat.simplex.common.model.ChatController.apiDeleteChatTag
 import chat.simplex.common.model.ChatController.apiSetChatTags
 import chat.simplex.common.model.ChatController.appPrefs
+import chat.simplex.common.model.ChatModel.clearActiveChatFilterIfNeeded
 import chat.simplex.common.model.ChatModel.withChats
 import chat.simplex.common.model.ChatModel.withReportsChatsIfOpen
 import chat.simplex.common.platform.*
@@ -447,9 +448,7 @@ private fun deleteTag(rhId: Long?, tag: ChatTag, saving: MutableState<Boolean>)
       val tagId = tag.chatTagId
       if (apiDeleteChatTag(rhId, tagId)) {
         chatModel.userTags.value = chatModel.userTags.value.filter { it.chatTagId != tagId }
-        if (chatModel.activeChatTagFilter.value == ActiveFilter.UserTag(tag)) {
-          chatModel.activeChatTagFilter.value = null
-        }
+        clearActiveChatFilterIfNeeded()
         chatModel.chats.value.forEach { c ->
           when (val cInfo = c.chatInfo) {
             is ChatInfo.Direct -> {