fix: errors in space hierarchy

- fix suggestions of joined rooms
- fix missing spaces when parent not joined

Signed-off-by: TheOneWithTheBraid <the-one@with-the-braid.cf>

assets/l10n/intl_en.arb

@@ -142,6 +142,7 @@
     "type": "text",
     "placeholders": {}
   },
+  "allSuggestedRoomsJoined": "You joined all suggested rooms",
   "askVerificationRequest": "Accept this verification request from {username}?",
   "@askVerificationRequest": {
     "type": "text",

lib/pages/chat_list/spaces_drawer.dart

@@ -4,6 +4,7 @@ import 'package:flutter/material.dart';
 
 import 'package:collection/collection.dart';
 import 'package:flutter_gen/gen_l10n/l10n.dart';
+import 'package:matrix/matrix.dart';
 import 'package:vrouter/vrouter.dart';
 
 import 'package:fluffychat/pages/chat_list/spaces_entry.dart';
@@ -55,7 +56,9 @@ class SpacesDrawer extends StatelessWidget {
           entry.children.addAll(childrenSpaceEntries);
           spacesHierarchy.add(entry);
         } else {
-          if (space?.spaceParents.isEmpty ?? false) {
+          // don't add rooms with parent space apart from those where the
+          // parent space is not joined
+          if (space?.hasNotJoinedParentSpace() ?? false) {
             spacesHierarchy.add(entry);
           }
         }
@@ -67,10 +70,6 @@ class SpacesDrawer extends StatelessWidget {
     spacesHierarchy.removeWhere((element) =>
         childSpaceIds.contains(element.spacesEntry.getSpace(context)?.id));
 
-    // final spacesHierarchy = spaceEntries;
-
-    // TODO(TheOeWithTheBraid): wait for space hierarchy https://gitlab.com/famedly/company/frontend/libraries/matrix_api_lite/-/merge_requests/58
-
     return ListView.builder(
       itemCount: spacesHierarchy.length + 1,
       itemBuilder: (context, i) {
@@ -113,7 +112,11 @@ class SpacesEntryMaybeChildren {
       [String? parent]) {
     if (entry is SpaceSpacesEntry) {
       final room = entry.space;
-      if ((parent == null && room.spaceParents.isNotEmpty) ||
+      // don't add rooms with parent space apart from those where the
+      // parent space is not joined
+      if ((parent == null &&
+              room.spaceParents.isNotEmpty &&
+              room.hasNotJoinedParentSpace()) ||
           (parent != null &&
               !room.spaceParents.any((element) => element.roomId == parent))) {
         return null;
@@ -174,3 +177,14 @@ class SpacesEntryMaybeChildren {
     return jsonEncode(toJson());
   }
 }
+
+extension on Room {
+  bool hasNotJoinedParentSpace() {
+    return (spaceParents.isEmpty ||
+        spaceParents.none(
+          (p0) =>
+              (p0.canonical ?? true) &&
+              client.rooms.map((e) => e.id).contains(p0.roomId),
+        ));
+  }
+}

lib/pages/chat_list/spaces_hierarchy_proposal.dart

@@ -62,6 +62,7 @@ class _SpacesHierarchyProposalsState extends State<SpacesHierarchyProposals> {
         builder: (context, snapshot) {
           Widget child;
           if (snapshot.hasData) {
+            final thereWereRooms = snapshot.data!.rooms.isNotEmpty;
             final rooms = snapshot.data!.rooms.where(
               (element) =>
                   element.roomId != widget.space &&
@@ -72,9 +73,11 @@ class _SpacesHierarchyProposalsState extends State<SpacesHierarchyProposals> {
                       // in case not, just leave it...
                       : true) &&
                   client.rooms
-                      .any((knownRoom) => element.roomId != knownRoom.id),
+                      .every((knownRoom) => element.roomId != knownRoom.id),
             );
-            if (rooms.isEmpty) child = const ListTile(key: ValueKey(false));
+            if (rooms.isEmpty && !thereWereRooms) {
+              child = const ListTile(key: ValueKey(false));
+            }
             child = Column(
               key: ValueKey(widget.space),
               mainAxisSize: MainAxisSize.min,
@@ -96,6 +99,11 @@ class _SpacesHierarchyProposalsState extends State<SpacesHierarchyProposals> {
                         ),
                   onTap: _refreshRooms,
                 ),
+                if (rooms.isEmpty && thereWereRooms)
+                  ListTile(
+                    leading: const Icon(Icons.info),
+                    title: Text(L10n.of(context)!.allSuggestedRoomsJoined),
+                  ),
                 ...rooms.map(
                   (e) => RecommendedRoomListItem(
                     room: e,