fix(permissions): fix hang when all channel perm check return (#14259)

* fix(permissions): fix hang when all channel perm check return

Fixes #14234

The problem was that we updated **all** the models from **all** the channels of a community each time the channel requirement checks returned.

The fix is to first of all, make sure we don't call that check too often. It sometimes got called twice in a row by accident.

The other better fix is to check if anything actually changed before updating. This solves the issue almost entirely.  Since the permissions almost never change, the updates now take only a second.

* fix(permisisons): never run permission checks for privileged users

Also fixes #14234 but for admins, TMs and Owners.

Admins+ were still getting the hang, because the permission checks always returned something different than the models, because the models knew that admins have access to everything, but the permission check was running as if it were a normal user (I think, un-tested).

Anyway, the solution is more simple, we never need  to run the permission checks on admins+, because they always have access to everything!

* fix(Communities): prevent channels model from emitting unnecessary signals

Closes: #14274

* chore(Communities): improve channels metadata lookup performance

ChannelsSelectionModel is removed, replaced with plain LeftJoinModel.
Transformations of left-side model are done in a single place, not in
every delegate making the join.

* only call update functions when there is something to update + move permission model creation when needed

---------

Co-authored-by: Michał Cieślak <michalcieslak@status.im>

src/app/modules/main/chat_section/controller.nim

@@ -30,6 +30,7 @@ type
     isCommunitySection: bool
     activeItemId: string
     isCurrentSectionActive: bool
+    allChannelsPermissionCheckOngoing: bool
     events: UniqueUUIDEventEmitter
     settingsService: settings_service.Service
     nodeConfigurationService: node_configuration_service.Service
@@ -45,6 +46,8 @@ type
     sharedUrlsService: shared_urls_service.Service
     networkService: network_service.Service
 
+# Forward declarations
+proc getMyCommunity*(self: Controller): CommunityDto
 
 proc newController*(delegate: io_interface.AccessInterface, sectionId: string, isCommunity: bool, events: EventEmitter,
     settingsService: settings_service.Service, nodeConfigurationService: node_configuration_service.Service,
@@ -96,8 +99,9 @@ proc asyncCheckPermissionsToJoin*(self: Controller) =
   self.delegate.setPermissionsToJoinCheckOngoing(true)
 
 proc asyncCheckAllChannelsPermissions*(self: Controller) =
-  if self.delegate.getPermissionsToJoinCheckOngoing():
+  if self.allChannelsPermissionCheckOngoing:
     return
+  self.allChannelsPermissionCheckOngoing = true
   self.chatService.asyncCheckAllChannelsPermissions(self.getMySectionId(), addresses = @[])
   self.delegate.setChannelsPermissionsCheckOngoing(true)
 
@@ -105,6 +109,9 @@ proc asyncCheckChannelPermissions*(self: Controller, communityId: string, chatId
   self.chatService.asyncCheckChannelPermissions(communityId, chatId)
 
 proc asyncCheckPermissions*(self: Controller) =
+  let community = self.getMyCommunity()
+  if community.isPrivilegedUser:
+    return
   self.asyncCheckPermissionsToJoin()
   self.asyncCheckAllChannelsPermissions()
 
@@ -309,11 +316,13 @@ proc init*(self: Controller) =
     self.events.on(SIGNAL_CHECK_ALL_CHANNELS_PERMISSIONS_RESPONSE) do(e: Args):
       let args = CheckAllChannelsPermissionsResponseArgs(e)
       if args.communityId == self.sectionId:
+        self.allChannelsPermissionCheckOngoing = false
         self.delegate.onCommunityCheckAllChannelsPermissionsResponse(args.checkAllChannelsPermissionsResponse)
 
     self.events.on(SIGNAL_CHECK_ALL_CHANNELS_PERMISSIONS_FAILED) do(e: Args):
       let args = CheckChannelsPermissionsErrorArgs(e)
       if args.communityId == self.sectionId:
+        self.allChannelsPermissionCheckOngoing = false
         self.delegate.setPermissionsToJoinCheckOngoing(false)
 
     self.events.on(SIGNAL_WAITING_ON_NEW_COMMUNITY_OWNER_TO_CONFIRM_REQUEST_TO_REJOIN) do(e: Args):

src/app/modules/main/chat_section/model.nim

@@ -361,6 +361,10 @@ QtObject:
     let index = self.getItemIdxById(id)
     if index == -1:
       return
+
+    if (self.items[index].isLocked == locked):
+      return
+
     self.items[index].locked = locked
     let modelIndex = self.createIndex(index, 0, nil)
     defer: modelIndex.delete
@@ -370,6 +374,10 @@ QtObject:
     let index = self.getItemIdxById(id)
     if index == -1:
       return
+
+    if (self.items[index].viewOnlyPermissionsSatisfied == satisfied):
+      return
+
     self.items[index].viewOnlyPermissionsSatisfied = satisfied
     let modelIndex = self.createIndex(index, 0, nil)
     defer: modelIndex.delete
@@ -381,6 +389,10 @@ QtObject:
     let index = self.getItemIdxById(id)
     if index == -1:
       return
+
+    if (self.items[index].viewAndPostPermissionsSatisfied == satisfied):
+      return
+
     self.items[index].viewAndPostPermissionsSatisfied = satisfied
     let modelIndex = self.createIndex(index, 0, nil)
     defer: modelIndex.delete
@@ -392,6 +404,10 @@ QtObject:
     let index = self.getItemIdxById(id)
     if index == -1:
       return
+
+    if (self.items[index].requiresPermissions == value):
+      return
+
     self.items[index].requiresPermissions = value
     let modelIndex = self.createIndex(index, 0, nil)
     defer: modelIndex.delete

src/app/modules/main/chat_section/module.nim

@@ -604,7 +604,9 @@ method onActiveSectionChange*(self: Module, sectionId: string) =
     self.controller.setIsCurrentSectionActive(false)
     return
 
+  var firstLoad = false
   if not self.view.getChatsLoaded:
+    firstLoad = true
     self.controller.getChatsAndBuildUI()
 
   self.controller.setIsCurrentSectionActive(true)
@@ -618,6 +620,7 @@ method onActiveSectionChange*(self: Module, sectionId: string) =
     let community = self.controller.getMyCommunity()
     if not community.isPrivilegedUser:
       self.controller.asyncCheckPermissionsToJoin()
+      if firstLoad:
         self.controller.asyncCheckAllChannelsPermissions()
 
   self.delegate.onActiveChatChange(self.controller.getMySectionId(), self.controller.getActiveChatId())
@@ -924,7 +927,9 @@ method onCommunityTokenPermissionCreated*(self: Module, communityId: string, tok
   if tokenPermission.state == TokenPermissionState.Approved:
     singletonInstance.globalEvents.showCommunityTokenPermissionCreatedNotification(communityId, "Community permission created", "A token permission has been added")
 
-proc updateTokenPermissionModel*(self: Module, permissions: Table[string, CheckPermissionsResultDto], community: CommunityDto) =
+# Returns true if there was an update
+proc updateTokenPermissionModel*(self: Module, permissions: Table[string, CheckPermissionsResultDto], community: CommunityDto): bool =
+  var thereWasAnUpdate = false
   for id, criteriaResult in permissions:
     if community.tokenPermissions.hasKey(id):
       let tokenPermissionItem = self.view.tokenPermissionsModel.getItemById(id)
@@ -935,6 +940,10 @@ proc updateTokenPermissionModel*(self: Module, permissions: Table[string, CheckP
       var permissionSatisfied = true
 
       for index, tokenCriteriaItem in tokenPermissionItem.getTokenCriteria().getItems():
+        let criteriaMet = criteriaResult.criteria[index]
+
+        if tokenCriteriaItem.criteriaMet == criteriaMet:
+          continue
 
         let updatedTokenCriteriaItem = initTokenCriteriaItem(
           tokenCriteriaItem.symbol,
@@ -950,6 +959,10 @@ proc updateTokenPermissionModel*(self: Module, permissions: Table[string, CheckP
 
         updatedTokenCriteriaItems.add(updatedTokenCriteriaItem)
 
+      if updatedTokenCriteriaItems.len == 0:
+        continue
+
+      thereWasAnUpdate = true
       let updatedTokenPermissionItem = initTokenPermissionItem(
           tokenPermissionItem.id,
           tokenPermissionItem.`type`,
@@ -961,6 +974,8 @@ proc updateTokenPermissionModel*(self: Module, permissions: Table[string, CheckP
       )
       self.view.tokenPermissionsModel().updateItem(id, updatedTokenPermissionItem)
 
+    return thereWasAnUpdate
+
 proc updateCommunityPermissionsView*(self: Module) =
   let tokenPermissionsItems = self.view.tokenPermissionsModel().getItems()
 
@@ -994,11 +1009,20 @@ proc updateCommunityPermissionsView*(self: Module) =
   self.view.setAllTokenRequirementsMet(tokenRequirementsMet)
   self.view.setRequiresTokenPermissionToJoin(requiresPermissionToJoin)
 
-proc updateChannelPermissionViewData*(self: Module, chatId: string, viewOnlyPermissions: ViewOnlyOrViewAndPostPermissionsResponseDto, viewAndPostPermissions: ViewOnlyOrViewAndPostPermissionsResponseDto, community: CommunityDto) =
+proc updateChannelPermissionViewData*(
-  self.updateTokenPermissionModel(viewOnlyPermissions.permissions, community)
+    self: Module,
-  self.updateTokenPermissionModel(viewAndPostPermissions.permissions, community)
+    chatId: string,
+    viewOnlyPermissions: ViewOnlyOrViewAndPostPermissionsResponseDto,
+    viewAndPostPermissions: ViewOnlyOrViewAndPostPermissionsResponseDto,
+    community: CommunityDto
+  ) =
+
+  let viewOnlyUpdated = self.updateTokenPermissionModel(viewOnlyPermissions.permissions, community)
+  let viewAndPostUpdated = self.updateTokenPermissionModel(viewAndPostPermissions.permissions, community)
+  if viewOnlyUpdated or viewAndPostUpdated:
     self.updateChatRequiresPermissions(chatId)
     self.updateChatLocked(chatId)
+
   if self.chatContentModules.hasKey(chatId):
     self.chatContentModules[chatId].onUpdateViewOnlyPermissionsSatisfied(viewOnlyPermissions.satisfied)
     self.chatContentModules[chatId].onUpdateViewAndPostPermissionsSatisfied(viewAndPostPermissions.satisfied)
@@ -1010,7 +1034,7 @@ proc updateChannelPermissionViewData*(self: Module, chatId: string, viewOnlyPerm
 method onCommunityCheckPermissionsToJoinResponse*(self: Module, checkPermissionsToJoinResponse: CheckPermissionsToJoinResponseDto) =
   let community = self.controller.getMyCommunity()
   self.view.setAllTokenRequirementsMet(checkPermissionsToJoinResponse.satisfied)
-  self.updateTokenPermissionModel(checkPermissionsToJoinResponse.permissions, community)
+  discard self.updateTokenPermissionModel(checkPermissionsToJoinResponse.permissions, community)
   self.updateCommunityPermissionsView()
   self.setPermissionsToJoinCheckOngoing(false)
 

src/app/modules/main/communities/module.nim

@@ -905,6 +905,11 @@ proc applyPermissionResponse*(self: Module, communityId: string, permissions: Ta
     var permissionSatisfied = true
 
     for index, tokenCriteriaItem in tokenPermissionItem.getTokenCriteria().getItems():
+      let criteriaMet = criteriaResult.criteria[index]
+
+      if tokenCriteriaItem.criteriaMet == criteriaMet:
+        continue
+
 
       let updatedTokenCriteriaItem = initTokenCriteriaItem(
         tokenCriteriaItem.symbol,
@@ -920,6 +925,8 @@ proc applyPermissionResponse*(self: Module, communityId: string, permissions: Ta
 
       updatedTokenCriteriaItems.add(updatedTokenCriteriaItem)
 
+    if updatedTokenCriteriaItems.len == 0:
+      continue
     let updatedTokenPermissionItem = initTokenPermissionItem(
         tokenPermissionItem.id,
         tokenPermissionItem.`type`,

ui/app/AppLayouts/Communities/panels/PermissionsSettingsPanel.qml

@@ -5,13 +5,16 @@ import AppLayouts.Communities.controls 1.0
 import AppLayouts.Communities.layouts 1.0
 import AppLayouts.Communities.views 1.0
 
-import StatusQ.Core 0.1
+import StatusQ 0.1
 import StatusQ.Controls 0.1
+import StatusQ.Core 0.1
 import StatusQ.Core.Utils 0.1
 
 import utils 1.0
 import shared.popups 1.0
 
+import SortFilterProxyModel 0.2
+
 StackView {
     id: root
 
@@ -46,6 +49,40 @@ StackView {
         root.push(newPermissionView, properties, StackView.Immediate);
     }
 
+    SortFilterProxyModel {
+        id: allChannelsTransformed
+
+        sourceModel: root.channelsModel
+
+        proxyRoles: [
+            FastExpressionRole {
+                name: "key"
+                expression: model.itemId ?? ""
+                expectedRoles: ["itemId"]
+            },
+            FastExpressionRole {
+                name: "text"
+                expression: "#" + model.name
+                expectedRoles: ["name"]
+            },
+            FastExpressionRole {
+                name: "imageSource"
+                expression: model.icon
+                expectedRoles: ["icon"]
+            },
+            FastExpressionRole {
+                name: "operator"
+
+                // Direct call for singleton enum is not handled properly by SortFilterProxyModel.
+                readonly property int none: OperatorsUtils.Operators.None
+
+                expression: none
+                expectedRoles: []
+            }
+        ]
+    }
+
+
     // Community Permissions possible view contents:
     initialItem: SettingsPage {
         id: initialItem
@@ -70,7 +107,8 @@ StackView {
                 permissionsModel: root.permissionsModel
                 assetsModel: root.assetsModel
                 collectiblesModel: root.collectiblesModel
-                channelsModel: root.channelsModel
+                channelsModel: allChannelsTransformed
+
                 communityDetails: root.communityDetails
 
                 viewWidth: root.viewWidth
@@ -148,7 +186,7 @@ StackView {
 
                 assetsModel: root.assetsModel
                 collectiblesModel: root.collectiblesModel
-                channelsModel: root.channelsModel
+                channelsModel: allChannelsTransformed
                 communityDetails: root.communityDetails
                 showChannelSelector: root.showChannelSelector
                 isEditState: newPermissionViewPage.isEditState

ui/app/AppLayouts/Communities/views/ChannelsSelectionModel.qml

@@ -1,55 +0,0 @@
-import QtQml 2.15
-import SortFilterProxyModel 0.2
-
-import StatusQ.Core.Utils 0.1
-import StatusQ.Core.Theme 0.1
-import StatusQ 0.1
-
-import utils 1.0
-
-SortFilterProxyModel {
-    id: root
-    
-    property var selectedChannels
-    property var allChannels
-
-    property var jointModel: LeftJoinModel {
-        readonly property var channelsModelAlignedKey: SortFilterProxyModel {
-            sourceModel: root.allChannels
-            proxyRoles: [
-                FastExpressionRole {
-                    name: "key"
-                    expression: model.itemId ?? ""
-                    expectedRoles: ["itemId"]
-                }
-            ]
-        }
-        leftModel: root.selectedChannels
-        rightModel: channelsModelAlignedKey
-        joinRole: "key"
-    }
-
-    sourceModel: jointModel
-
-    proxyRoles: [
-        FastExpressionRole {
-            name: "text"
-            expression: "#" + model.name
-            expectedRoles: ["name"]
-        },
-        FastExpressionRole {
-            name: "imageSource"
-            expression: model.icon
-            expectedRoles: ["icon"]
-        },
-        FastExpressionRole {
-            name: "operator"
-
-            // Direct call for singleton enum is not handled properly by SortFilterProxyModel.
-            readonly property int none: OperatorsUtils.Operators.None
-
-            expression: none
-            expectedRoles: []
-        }
-    ]
-}

ui/app/AppLayouts/Communities/views/CommunityColumnView.qml

@@ -55,11 +55,6 @@ Item {
         communityData.memberRole === Constants.memberRole.admin ||
         communityData.memberRole === Constants.memberRole.tokenMaster
 
-    readonly property var permissionsModel: {
-        root.store.prepareTokenModelForCommunity(communityData.id)
-        return root.store.permissionsModel
-    }
-
     signal infoButtonClicked
     signal manageButtonClicked
 
@@ -544,7 +539,10 @@ Item {
             communitiesStore: root.communitiesStore
             assetsModel: root.store.assetsModel
             collectiblesModel: root.store.collectiblesModel
-            permissionsModel: root.store.permissionsModel
+            permissionsModel: {
+                root.store.prepareTokenModelForCommunity(communityData.id)
+                return root.store.permissionsModel
+            }
             channelsModel: root.store.chatCommunitySectionModule.model
             emojiPopup: root.emojiPopup
             activeCommunity: root.communityData

ui/app/AppLayouts/Communities/views/EditPermissionView.qml

@@ -2,6 +2,7 @@ import QtQuick 2.15
 import QtQuick.Layouts 1.15
 import QtQml 2.15
 
+import StatusQ 0.1
 import StatusQ.Core 0.1
 import StatusQ.Core.Theme 0.1
 import StatusQ.Components 0.1
@@ -516,11 +517,12 @@ StatusScrollView {
                 }
             }
 
-            ChannelsSelectionModel {
+            LeftJoinModel {
                 id: channelsSelectionModel
 
-                selectedChannels: d.dirtyValues.selectedChannelsModel
+                leftModel: d.dirtyValues.selectedChannelsModel
-                allChannels: root.channelsModel
+                rightModel: root.channelsModel
+                joinRole: "key"
             }
 
             InDropdown {

ui/app/AppLayouts/Communities/views/PermissionsView.qml

@@ -1,8 +1,9 @@
-import QtQuick 2.14
+import QtQuick 2.15
-import QtQuick.Layouts 1.14
+import QtQuick.Layouts 1.15
 
-import StatusQ.Core 0.1
+import StatusQ 0.1
 import StatusQ.Controls 0.1
+import StatusQ.Core 0.1
 
 import SortFilterProxyModel 0.2
 import shared.status 1.0
@@ -70,6 +71,7 @@ ColumnLayout {
         ]
     }
 
+
     Repeater {
         id: repeater
 
@@ -87,14 +89,15 @@ ColumnLayout {
             permissionType: model.permissionType
             permissionState: model.permissionState // TODO: Backend!
 
-            ChannelsSelectionModel {
+            LeftJoinModel {
                 id: channelsSelectionModel
 
-                selectedChannels: model.channelsListModel ?? null
+                leftModel: model.channelsListModel ?? null
-                allChannels: root.channelsModel
+                rightModel: root.channelsModel
+                joinRole: "key"
             }
 
-            channelsListModel: channelsSelectionModel.count
+            channelsListModel: model.channelsListModel.rowCount()
                                     ? channelsSelectionModel : communityItemModel
             isPrivate: model.isPrivate
 

ui/app/AppLayouts/Communities/views/qmldir

@@ -1,14 +1,13 @@
 BannedMemberCommunityView 1.0 BannedMemberCommunityView.qml
-ChannelsSelectionModel 1.0 ChannelsSelectionModel.qml
-CommunityColumnView 1.0 CommunityColumnView.qml
 CommunitiesGridView 1.0 CommunitiesGridView.qml
+CommunityColumnView 1.0 CommunityColumnView.qml
 CommunitySettingsView 1.0 CommunitySettingsView.qml
 CommunityTokenView 1.0 CommunityTokenView.qml
 ControlNodeOfflineCommunityView 1.0 ControlNodeOfflineCommunityView.qml
 EditAirdropView 1.0 EditAirdropView.qml
-EditPermissionView 1.0 EditPermissionView.qml
 EditCommunityTokenView 1.0 EditCommunityTokenView.qml
 EditOwnerTokenView 1.0 EditOwnerTokenView.qml
+EditPermissionView 1.0 EditPermissionView.qml
 HoldingsSelectionModel 1.0 HoldingsSelectionModel.qml
 JoinCommunityView 1.0 JoinCommunityView.qml
 MintedTokensView 1.0 MintedTokensView.qml