Channel link autocomplete

lib/api/model/events.dart

@@ -616,15 +616,38 @@ class ChannelDeleteEvent extends ChannelEvent {
   @JsonKey(includeToJson: true)
   String get op => 'delete';
 
-  final List<ZulipStream> streams;
+  @JsonKey(readValue: _readChannelIds, includeToJson: false)
+  final List<int> channelIds;
+
+  // TODO(server-10) simplify away; rely on stream_ids
+  static List<int> _readChannelIds(Map<dynamic, dynamic> json, String key) {
+    final channelIds = json['stream_ids'] as List<dynamic>?;
+    if (channelIds != null) channelIds.map((id) => id as int).toList();
+
+    final channels = json['streams'] as List<dynamic>;
+    return channels
+      .map((c) => (c as Map<String, dynamic>)['stream_id'] as int)
+      .toList();
+  }
 
-  ChannelDeleteEvent({required super.id, required this.streams});
+  ChannelDeleteEvent({
+    required super.id,
+    required this.channelIds,
+  });
 
   factory ChannelDeleteEvent.fromJson(Map<String, dynamic> json) =>
     _$ChannelDeleteEventFromJson(json);
 
   @override
-  Map<String, dynamic> toJson() => _$ChannelDeleteEventToJson(this);
+  Map<String, dynamic> toJson() {
+    // TODO(server-10) simplify away; rely on stream_ids
+    final result = _$ChannelDeleteEventToJson(this);
+    result['stream_ids'] = channelIds;
+    result['streams'] = [
+      for (final id in channelIds) {'stream_id': id}
+    ];
+    return result;
+  }
 }
 
 /// A [ChannelEvent] with op `update`: https://zulip.com/api/get-events#stream-update
@@ -683,6 +706,8 @@ class ChannelUpdateEvent extends ChannelEvent {
         return value as int?;
       case ChannelPropertyName.channelPostPolicy:
         return ChannelPostPolicy.fromApiValue(value as int);
+      case ChannelPropertyName.isRecentlyActive:
+        return value as bool?;
       case ChannelPropertyName.folderId:
         return value as int?;
       case ChannelPropertyName.canAddSubscribersGroup:

lib/api/model/model.dart

@@ -659,6 +659,7 @@ class ZulipStream {
   GroupSettingValue? canSendMessageGroup; // TODO(server-10)
   GroupSettingValue? canSubscribeGroup; // TODO(server-10)
 
+  bool? isRecentlyActive; // TODO(server-10)
   // TODO(server-8): added in FL 199, was previously only on [Subscription] objects
   int? streamWeeklyTraffic;
 
@@ -681,6 +682,7 @@ class ZulipStream {
     required this.canDeleteOwnMessageGroup,
     required this.canSendMessageGroup,
     required this.canSubscribeGroup,
+    required this.isRecentlyActive,
     required this.streamWeeklyTraffic,
   });
 
@@ -705,6 +707,7 @@ class ZulipStream {
       canDeleteOwnMessageGroup: subscription.canDeleteOwnMessageGroup,
       canSendMessageGroup: subscription.canSendMessageGroup,
       canSubscribeGroup: subscription.canSubscribeGroup,
+      isRecentlyActive: subscription.isRecentlyActive,
       streamWeeklyTraffic: subscription.streamWeeklyTraffic,
     );
   }
@@ -742,6 +745,7 @@ enum ChannelPropertyName {
   canDeleteOwnMessageGroup,
   canSendMessageGroup,
   canSubscribeGroup,
+  isRecentlyActive,
   streamWeeklyTraffic;
 
   /// Get a [ChannelPropertyName] from a raw, snake-case string we recognize, else null.
@@ -827,6 +831,7 @@ class Subscription extends ZulipStream {
     required super.canDeleteOwnMessageGroup,
     required super.canSendMessageGroup,
     required super.canSubscribeGroup,
+    required super.isRecentlyActive,
     required super.streamWeeklyTraffic,
     required this.desktopNotifications,
     required this.emailNotifications,