fix(mobile): include legacy Solo chats in the push lease

Signed-off-by: Tom Brow <tomb@block.xyz>

mobile/lib/shared/push/push_subscription_provider.dart

@@ -7,6 +7,7 @@ import '../../features/channels/channel_mutes/channel_mutes_provider.dart';
 import '../../features/channels/channels_provider.dart';
 import '../community/community.dart';
 import '../community/community_provider.dart';
+import '../me/me_sync.dart';
 import '../relay/relay_provider.dart';
 import 'push_subscription.dart';
 
@@ -24,9 +25,15 @@ final pushSubscriptionSyncProvider = Provider<void>((ref) {
     return;
   }
 
+  // Legacy Solo chats arrive with the encrypted Solo record. Until it loads,
+  // labelled Solo chats, DMs and mentions still push; the lease updates when
+  // the record arrives.
+  final legacySoloChannelIds =
+      ref.watch(meGroupsProvider).value?.channels ?? const <String>[];
   final subscriptions = desiredBuzzPushSubscriptions(
     community: active,
     channels: channels,
+    legacySoloChannelIds: legacySoloChannelIds,
     mutedChannelIds: [
       for (final entry in mutes.store.channels.entries)
         if (entry.value.muted) entry.key,
@@ -44,6 +51,7 @@ List<BuzzPushSubscription>? desiredBuzzPushSubscriptions({
   required Community community,
   required Iterable<Channel> channels,
   required Iterable<String> mutedChannelIds,
+  Iterable<String> legacySoloChannelIds = const [],
 }) {
   final pubkey = community.pubkey ?? pubkeyFromNsec(community.nsec);
   if (pubkey == null || pubkey.isEmpty) return null;
@@ -55,7 +63,8 @@ List<BuzzPushSubscription>? desiredBuzzPushSubscriptions({
       // through an exact #p mention, so subscribing to every joined channel
       // would over-notify.
       for (final channel in channels)
-        if ((channel.isDm || channel.isPersonalChat(pubkey, const [])) &&
+        if ((channel.isDm ||
+                channel.isPersonalChat(pubkey, legacySoloChannelIds)) &&
             channel.isMember &&
             !channel.isArchived)
           channel.id,

mobile/test/shared/push/push_subscription_provider_test.dart

@@ -45,6 +45,7 @@ void main() {
     const otherSoloID = '123e4567-e89b-42d3-a456-426614174006';
     const streamID = '123e4567-e89b-42d3-a456-426614174007';
     const mutedSoloID = '123e4567-e89b-42d3-a456-426614174008';
+    const legacySoloID = '123e4567-e89b-42d3-a456-426614174009';
     Channel solo(String id, {String? createdBy, bool archived = false}) =>
         channel(
           id,
@@ -67,14 +68,16 @@ void main() {
         solo(otherSoloID, createdBy: 'author'),
         channel(streamID, channelType: 'stream', visibility: 'private'),
         solo(mutedSoloID),
+        channel(legacySoloID, channelType: 'stream', visibility: 'private'),
       ],
+      legacySoloChannelIds: const [legacySoloID],
       mutedChannelIds: const [mutedSoloID],
     );
 
     expect(subscriptions, hasLength(2));
     expect(subscriptions!.first.ignore.last.hTags, [mutedSoloID]);
     expect(subscriptions.last.filter.kinds, buzzPushChannelKinds);
-    expect(subscriptions.last.filter.hTags, [dmID, soloID]);
+    expect(subscriptions.last.filter.hTags, [dmID, soloID, legacySoloID]);
   });
 
   test('returns no desired subscriptions without a signing identity', () {