fix(community): fix messages being gone when we re-join a community

Fixes #7512

The problem was twofold.
1. We didn't try to fetch the messages when we re-joined, since the cursor was not reseted
2. The messages are not longer in the DB since they get deleted on joining.

I fixed 1. by reseting the cursor on leave and calling fetch on spectate
I fixed 2. in the status-go PR so that we no longer delete the messages when leaving.

src/app/boot/app_controller.nim

@@ -147,8 +147,6 @@ proc newAppController*(statusFoundation: StatusFoundation): AppController =
     result.activityCenterService
   )
   result.chatService = chat_service.newService(statusFoundation.events, result.contactsService)
-  result.communityService = community_service.newService(statusFoundation.events,
-    statusFoundation.threadpool, result.chatService, result.activityCenterService)
   result.tokenService = token_service.newService(
     statusFoundation.events, statusFoundation.threadpool, result.networkService
   )
@@ -160,6 +158,8 @@ proc newAppController*(statusFoundation: StatusFoundation): AppController =
   result.messageService = message_service.newService(
     statusFoundation.events, statusFoundation.threadpool, result.contactsService, result.tokenService, result.walletAccountService, result.networkService
   )
+  result.communityService = community_service.newService(statusFoundation.events,
+    statusFoundation.threadpool, result.chatService, result.activityCenterService, result.messageService)
   result.transactionService = transaction_service.newService(statusFoundation.events, statusFoundation.threadpool, result.networkService, result.settingsService, result.tokenService)
   result.bookmarkService = bookmark_service.newService(statusFoundation.events)
   result.profileService = profile_service.newService(result.contactsService, result.settingsService)

src/app_service/service/community/service.nim

@@ -3,6 +3,7 @@ import NimQml, Tables, json, sequtils, std/sets, std/algorithm, strformat, strut
 import ./dto/community as community_dto
 
 import ../activity_center/service as activity_center_service
+import ../message/service as message_service
 import ../chat/service as chat_service
 
 import ../../../app/global/global_singleton
@@ -134,6 +135,7 @@ QtObject:
       events: EventEmitter
       chatService: chat_service.Service
       activityCenterService: activity_center_service.Service
+      messageService: message_service.Service
       communityTags: string # JSON string contraining tags map
       joinedCommunities: Table[string, CommunityDto] # [community_id, CommunityDto]
       curatedCommunities: Table[string, CuratedCommunity] # [community_id, CuratedCommunity]
@@ -163,7 +165,8 @@ QtObject:
       events: EventEmitter,
       threadpool: ThreadPool,
       chatService: chat_service.Service,
-      activityCenterService: activity_center_service.Service
+      activityCenterService: activity_center_service.Service,
+      messageService: message_service.Service
       ): Service =
     result = Service()
     result.QObject.setup
@@ -171,6 +174,7 @@ QtObject:
     result.threadpool = threadpool
     result.chatService = chatService
     result.activityCenterService = activityCenterService
+    result.messageService = messageService
     result.communityTags = newString(0)
     result.joinedCommunities = initTable[string, CommunityDto]()
     result.curatedCommunities = initTable[string, CuratedCommunity]()
@@ -671,6 +675,7 @@ QtObject:
         chatDto.id = fullChatId
         # TODO find a way to populate missing infos like the color
         self.chatService.updateOrAddChat(chatDto)
+        self.messageService.asyncLoadInitialMessagesForChat(fullChatId)
 
       self.events.emit(SIGNAL_COMMUNITIES_UPDATE, CommunitiesArgs(communities: @[updatedCommunity]))
       self.events.emit(SIGNAL_COMMUNITY_SPECTATED, CommunityArgs(community: updatedCommunity, fromUserAction: true))
@@ -764,6 +769,9 @@ QtObject:
       self.allCommunities[communityId] = updatedCommunity
       self.events.emit(SIGNAL_COMMUNITIES_UPDATE, CommunitiesArgs(communities: @[updatedCommunity]))
 
+      for chat in updatedCommunity.chats:
+        self.messageService.resetMessageCursor(chat.id)
+
       # remove this from the joinedCommunities list
       self.joinedCommunities.del(communityId)
       self.events.emit(SIGNAL_COMMUNITY_LEFT, CommunityIdArgs(communityId: communityId))

src/app_service/service/message/service.nim

@@ -300,6 +300,11 @@ QtObject:
   proc initialMessagesFetched(self: Service, chatId: string): bool =
     return self.msgCursor.hasKey(chatId)
 
+  proc resetMessageCursor*(self: Service, chatId: string) =
+    if(not self.msgCursor.hasKey(chatId)):
+      return
+    self.msgCursor.del(chatId)
+
   proc getMessageCursor(self: Service, chatId: string): MessageCursor =
     if(not self.msgCursor.hasKey(chatId)):
       self.msgCursor[chatId] = initMessageCursor(value="", pending=false, mostRecent=false)

vendor/status-go

@@ -1 +1 @@
-Subproject commit d7bf19fdbb9805ffd7106d10b7b0211dbb614257
+Subproject commit cee5313e0ec26a7bbca4e27a81621b3fb99c77b6