feat(community): fetch community info from link

Fixes #2290

src/app/chat/views/communities.nim

@@ -170,10 +170,13 @@ QtObject:
 
   proc membershipRequestChanged*(self: CommunitiesView, communityName: string, accepted: bool) {.signal.}
   
+  proc communityAdded*(self: CommunitiesView, communityId: string) {.signal.}
+
   proc addCommunityToList*(self: CommunitiesView, community: Community) =
     let communityCheck = self.communityList.getCommunityById(community.id)
     if (communityCheck.id == ""):
       self.communityList.addCommunityItemToList(community)
+      self.communityAdded(community.id)
     else:
       self.communityList.replaceCommunity(community)
 
@@ -342,6 +345,12 @@ QtObject:
       return "Error declining request to join the community"
     return ""
 
+  proc requestCommunityInfo*(self: CommunitiesView, communityId: string) {.slot.} =
+    try:
+      self.status.chat.requestCommunityInfo(communityId)
+    except Exception as e:
+      error "Error fetching community info", msg = e.msg
+
   proc getChannel*(self: CommunitiesView, channelId: string): Chat =
     for community in self.joinedCommunityList.communities:
       for chat in community.chats:

src/status/chat.nim

@@ -53,6 +53,8 @@ type
   ChatModel* = ref object
     publicKey*: string
     events*: EventEmitter
+    communitiesToFetch*: seq[string]
+    mailserverReady*: bool
     contacts*: Table[string, Profile]
     channels*: Table[string, Chat]
     msgCursor*: Table[string, string]
@@ -68,6 +70,8 @@ include chat/utils
 proc newChatModel*(events: EventEmitter): ChatModel =
   result = ChatModel()
   result.events = events
+  result.mailserverReady = false
+  result.communitiesToFetch = @[]
   result.contacts = initTable[string, Profile]()
   result.channels = initTable[string, Chat]()
   result.msgCursor = initTable[string, string]()
@@ -160,6 +164,11 @@ proc updateContacts*(self: ChatModel, contacts: seq[Profile]) =
     self.contacts[c.id] = c
   self.events.emit("chatUpdate", ChatUpdateArgs(contacts: contacts))
 
+proc requestMissingCommunityInfos*(self: ChatModel) =
+  if (self.communitiesToFetch.len == 0):
+    return
+  for communityId in self.communitiesToFetch:
+    status_chat.requestCommunityInfo(communityId)
 
 proc init*(self: ChatModel, pubKey: string) =
   self.publicKey = pubKey
@@ -228,6 +237,8 @@ proc init*(self: ChatModel, pubKey: string) =
     warn "No topics found for chats. Cannot load past messages"
   else:
     self.events.once("mailserverAvailable") do(a: Args):
+      self.mailserverReady = true
+      self.requestMissingCommunityInfos()
       self.events.emit("mailserverTopics", TopicArgs(topics: topics));
 
   self.events.on("contactUpdate") do(a: Args):
@@ -462,6 +473,10 @@ proc joinCommunity*(self: ChatModel, communityId: string) =
   status_chat.joinCommunity(communityId)
 
 proc requestCommunityInfo*(self: ChatModel, communityId: string) =
+  if (not self.mailserverReady):
+    self.communitiesToFetch.add(communityId)
+    self.communitiesToFetch = self.communitiesToFetch.deduplicate()
+    return
   status_chat.requestCommunityInfo(communityId)
 
 proc leaveCommunity*(self: ChatModel, communityId: string) =

ui/app/AppLayouts/Chat/ChatColumn/Message.qml

@@ -29,6 +29,22 @@ Item {
     property string communityId: ""
     property int stickerPackId: -1
 
+    property string displayUserName: {
+        if (isCurrentUser) {
+            //% "You"
+            return qsTrId("You")
+        }
+
+        if (localName !== "") {
+            return localName
+        }
+
+        if (userName !== "") {
+            return Utils.removeStatusEns(userName)
+        }
+        return Utils.removeStatusEns(alias)
+    }
+
     property string authorCurrentMsg: "authorCurrentMsg"
     property string authorPrevMsg: "authorPrevMsg"
 

ui/app/AppLayouts/Chat/ChatColumn/MessageComponents/InvitationBubble.qml

@@ -59,7 +59,7 @@ Item {
                 StyledText {
                     id: invitedYou
                     //% "%1 invited you to join a community"
-                    text: qsTrId("-1-invited-you-to-join-a-community").arg(userName)
+                    text: qsTrId("-1-invited-you-to-join-a-community").arg(displayUserName)
                     anchors.top: title.bottom
                     anchors.topMargin: 4
                     anchors.left: parent.left

ui/app/AppLayouts/Chat/ChatColumn/MessageComponents/LinksMessage.qml

@@ -55,6 +55,8 @@ Column {
                 }
             }
             Connections {
+                id: linkFetchConnections
+                enabled: false
                 target: chatsModel
                 onLinkPreviewDataWasReceived: {
                     let response
@@ -69,6 +71,8 @@ Column {
 
                     if (response.uuid !== root.uuid) return
 
+                    linkFetchConnections.enabled = false
+
                     if (!response.success) {
                         console.error(response.result.error)
                         return undefined
@@ -86,6 +90,27 @@ Column {
                 }
             }
 
+            Connections {
+                id: linkCommunityFetchConnections
+                enabled: false
+                target: chatsModel.communities
+                onCommunityAdded: {
+                    if (communityId !== linkData.communityId) {
+                        return
+                    }
+                    linkCommunityFetchConnections.enabled = false
+                    const data = Utils.getLinkDataForStatusLinks(link)
+                    if (data) {
+                        linkData = data
+                        if (!data.fetching && data.communityId) {
+                            return linkMessageLoader.sourceComponent = invitationBubble
+                        }
+
+                        return linkMessageLoader.sourceComponent = unfurledLinkComponent
+                    }
+                }
+            }
+
             function getSourceComponent() {
                 // Reset the height in case we set it to 0 below. See note below
                 // for more information
@@ -117,6 +142,10 @@ Column {
                     const data = Utils.getLinkDataForStatusLinks(link)
                     if (data) {
                         linkData = data
+                        if (data.fetching && data.communityId) {
+                            linkCommunityFetchConnections.enabled = true
+                            return
+                        }
                         if (data.communityId) {
                             return invitationBubble
                         }
@@ -124,6 +153,7 @@ Column {
                         return unfurledLinkComponent
                     }
 
+                    linkFetchConnections.enabled = true
                     return chatsModel.getLinkPreviewData(link, root.uuid)
                 }
                 // setting the height to 0 allows the "enable link" dialog to

ui/app/AppLayouts/Chat/ChatColumn/MessageComponents/UsernameLabel.qml

@@ -12,21 +12,7 @@ Item {
 
     StyledTextEdit {
         id: chatName
-        text: {
-            if (isCurrentUser) {
-                //% "You"
-                return qsTrId("You")
-            }
-
-            if (localName !== "") {
-                return localName
-            }
-
-            if (userName !== "") {
-                return Utils.removeStatusEns(userName)
-            }
-            return Utils.removeStatusEns(alias)
-        }
+        text: displayUserName
         color: text.startsWith("@") || isCurrentUser || localName !== "" ? Style.current.blue : Style.current.secondaryText
         font.weight: Font.Medium
         font.pixelSize: Style.current.secondaryTextFontSize

ui/imports/Utils.qml

@@ -371,7 +371,6 @@ QtObject {
         }
 
         // Community
-        // TODO this will probably change
         index = link.lastIndexOf("/cc/")
         if (index > -1) {
             const communityId = link.substring(index + 4)
@@ -379,8 +378,10 @@ QtObject {
             const communityName = chatsModel.communities.getCommunityNameById(communityId)
 
             if (!communityName) {
-                // Unknown community
-                // TODO use a function to fetch that community?
+                // Unknown community, fetch the info if possible
+                chatsModel.communities.requestCommunityInfo(communityId)
+                result.communityId = communityId
+                result.fetching = true
                 return result
             }
 
@@ -423,6 +424,7 @@ QtObject {
             site: qsTr("Status app link"),
             title: result.title,
             communityId: result.communityId,
+            fetching: result.fetching,
             thumbnailUrl: "../../../../img/status.png",
             contentType: "",
             height: 0,