fix(@desktop/app-search): loading messages improvements

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

@@ -38,7 +38,7 @@ type
     searchLocation: string
     searchSubLocation: string
     searchTerm: string
-    resultItems: Table[string, ResultItemDetails] # [resuiltItemId, ResultItemDetails]
+    resultItems: Table[string, ResultItemDetails] # [resultItemId, ResultItemDetails]
 
 proc newController*(delegate: io_interface.AccessInterface, events: EventEmitter, contactsService: contact_service.Service,
   chatService: chat_service.Service, communityService: community_service.Service, 

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

@@ -23,6 +23,7 @@ type
     chatId: string
     belongsToCommunity: bool
     searchedMessageId: string
+    loadingMessagesPerPageFactor: int
     contactService: contact_service.Service
     communityService: community_service.Service
     chatService: chat_service.Service
@@ -37,6 +38,7 @@ proc newController*(delegate: io_interface.AccessInterface, events: EventEmitter
   result.events = events
   result.sectionId = sectionId
   result.chatId = chatId
+  result.loadingMessagesPerPageFactor = 1
   result.belongsToCommunity = belongsToCommunity
   result.contactService = contactService
   result.communityService = communityService
@@ -145,7 +147,7 @@ method init*(self: Controller) =
     var args = ActiveSectionChatArgs(e)
     if(self.sectionId != args.sectionId or self.chatId != args.chatId):
       return
-    self.delegate.switchToMessage(args.messageId)
+    self.delegate.scrollToMessage(args.messageId)
 
 method getMySectionId*(self: Controller): string =
   return self.sectionId
@@ -166,7 +168,8 @@ method belongsToCommunity*(self: Controller): bool =
   return self.belongsToCommunity
 
 method loadMoreMessages*(self: Controller) =
-  self.messageService.asyncLoadMoreMessagesForChat(self.chatId)
+  let limit = self.loadingMessagesPerPageFactor * MESSAGES_PER_PAGE
+  self.messageService.asyncLoadMoreMessagesForChat(self.chatId, limit)
 
 method addReaction*(self: Controller, messageId: string, emojiId: int) =
   self.messageService.addReaction(self.chatId, messageId, emojiId)
@@ -212,4 +215,13 @@ method setSearchedMessageId*(self: Controller, searchedMessageId: string) =
   self.searchedMessageId = searchedMessageId
 
 method clearSearchedMessageId*(self: Controller) =
-  self.setSearchedMessageId("")
+  self.setSearchedMessageId("")
+
+method getLoadingMessagesPerPageFactor*(self: Controller): int =
+  return self.loadingMessagesPerPageFactor
+
+method increaseLoadingMessagesPerPageFactor*(self: Controller) =
+  self.loadingMessagesPerPageFactor = self.loadingMessagesPerPageFactor + 1
+
+method resetLoadingMessagesPerPageFactor*(self: Controller) =
+  self.loadingMessagesPerPageFactor = 1

src/app/modules/main/chat_section/chat_content/messages/controller_interface.nim

@@ -79,4 +79,13 @@ method setSearchedMessageId*(self: AccessInterface, searchedMessageId: string) {
   raise newException(ValueError, "No implementation available")
 
 method clearSearchedMessageId*(self: AccessInterface) {.base.} =
+  raise newException(ValueError, "No implementation available")
+
+method getLoadingMessagesPerPageFactor*(self: AccessInterface): int {.base.} =
+  raise newException(ValueError, "No implementation available")
+
+method increaseLoadingMessagesPerPageFactor*(self: AccessInterface) {.base.} =
+  raise newException(ValueError, "No implementation available")
+
+method resetLoadingMessagesPerPageFactor*(self: AccessInterface) {.base.} =
   raise newException(ValueError, "No implementation available")

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

@@ -94,6 +94,19 @@ proc createChatIdentifierItem(self: Module): Item =
     @[],
   )
 
+proc checkIfMessageLoadedAndScrollToItIfItIs(self: Module): bool =
+  let searchedMessageId = self.controller.getSearchedMessageId()
+  if(searchedMessageId.len > 0):
+    self.view.emitScrollMessagesUpSignal()
+    let index = self.view.model().findIndexForMessageId(searchedMessageId)
+    self.controller.increaseLoadingMessagesPerPageFactor()
+    if(index != -1):
+      self.controller.clearSearchedMessageId()
+      self.controller.resetLoadingMessagesPerPageFactor()
+      self.view.emitScrollToMessageSignal(index)
+      return true
+  return false
+
 method newMessagesLoaded*(self: Module, messages: seq[MessageDto], reactions: seq[ReactionDto], 
   pinnedMessages: seq[PinnedMessageDto]) = 
   var viewItems: seq[Item]
@@ -157,10 +170,10 @@ method newMessagesLoaded*(self: Module, messages: seq[MessageDto], reactions: se
   if(not self.view.getInitialMessagesLoaded()):
     self.view.initialMessagesAreLoaded()
 
+  self.setLoadingHistoryMessagesInProgress(false)
+
   # check if this loading was caused by the click on a messages from the app search result
-  let searchedMessageId = self.controller.getSearchedMessageId()
-  if(searchedMessageId.len > 0):
-    self.switchToMessage(searchedMessageId)
+  discard self.checkIfMessageLoadedAndScrollToItIfItIs()
    
 method messageAdded*(self: Module, message: MessageDto) =
   let sender = self.controller.getContactDetails(message.`from`)
@@ -198,6 +211,7 @@ method onSendingMessageError*(self: Module) =
   self.view.emitSendingMessageErrorSignal()
 
 method loadMoreMessages*(self: Module) =
+  self.setLoadingHistoryMessagesInProgress(true)
   self.controller.loadMoreMessages()
 
 method toggleReaction*(self: Module, messageId: string, emojiId: int) =
@@ -330,4 +344,8 @@ method switchToMessage*(self: Module, messageId: string) =
     self.view.emitSwitchToMessageSignal(index)
   else:
     self.controller.setSearchedMessageId(messageId)
+
+method scrollToMessage*(self: Module, messageId: string) =
+  self.controller.setSearchedMessageId(messageId)
+  if(not self.checkIfMessageLoadedAndScrollToItIfItIs()):
     self.loadMoreMessages()

src/app/modules/main/chat_section/chat_content/messages/private_interfaces/module_controller_delegate_interface.nim

@@ -38,5 +38,5 @@ method onMessageEdited*(self: AccessInterface, message: MessageDto) {.base.} =
 method setLoadingHistoryMessagesInProgress*(self: AccessInterface, isLoading: bool) {.base.} =
   raise newException(ValueError, "No implementation available")
 
-method switchToMessage*(self: AccessInterface, messageId: string) {.base.} =
+method scrollToMessage*(self: AccessInterface, messageId: string) {.base.} =
   raise newException(ValueError, "No implementation available")

src/app/modules/main/chat_section/chat_content/messages/view.nim

@@ -133,4 +133,12 @@ QtObject:
 
   proc switchToMessage(self: View, messageIndex: int) {.signal.}
   proc emitSwitchToMessageSignal*(self: View, messageIndex: int) =
-    self.switchToMessage(messageIndex)
+    self.switchToMessage(messageIndex)
+
+  proc scrollToMessage(self: View, messageIndex: int) {.signal.}
+  proc emitScrollToMessageSignal*(self: View, messageIndex: int) =
+    self.scrollToMessage(messageIndex)
+
+  proc scrollMessagesUp(self: View) {.signal.}
+  proc emitScrollMessagesUpSignal*(self: View) =
+    self.scrollMessagesUp()

src/app_service/service/message/service.nim

@@ -20,7 +20,8 @@ logScope:
   topics = "messages-service"
 
 let NEW_LINE = re"\n|\r" #must be defined as let, not const
-const MESSAGES_PER_PAGE = 20
+const MESSAGES_PER_PAGE* = 20
+const MESSAGES_PER_PAGE_MAX* = 300
 const CURSOR_VALUE_IGNORE = "ignore"
 
 # Signals which may be emitted by this service:
@@ -271,7 +272,7 @@ QtObject:
     self.events.emit(SIGNAL_MESSAGES_LOADED, data)
 
 
-  proc asyncLoadMoreMessagesForChat*(self: Service, chatId: string) =
+  proc asyncLoadMoreMessagesForChat*(self: Service, chatId: string, limit = MESSAGES_PER_PAGE) =
     if (chatId.len == 0):
       error "empty chat id", methodName="asyncLoadMoreMessagesForChat"
       return
@@ -297,7 +298,7 @@ QtObject:
       chatId: chatId,
       msgCursor: msgCursor,
       pinnedMsgCursor: pinnedMsgCursor,
-      limit: MESSAGES_PER_PAGE
+      limit: if(limit <= MESSAGES_PER_PAGE_MAX): limit else: MESSAGES_PER_PAGE_MAX
     )
 
     self.threadpool.start(arg)

ui/app/AppLayouts/Chat/views/ChatMessagesView.qml

@@ -48,7 +48,11 @@ Item {
             sendingMsgFailedPopup.open();
         }
 
-        onSwitchToMessage: {
+        onScrollMessagesUp: {
+            chatLogView.positionViewAtEnd()
+        }
+
+        onScrollToMessage: {
             chatLogView.positionViewAtIndex(messageIndex, ListView.Center);
             chatLogView.itemAtIndex(messageIndex).startMessageFoundAnimation();
         }