channel: Add isRecentlyActive field

In the following commits, this will be used as one of the criteria for
sorting channels in channel link autocomplete.

Author: sm-sayedi

lib/api/model/events.dart

@@ -676,6 +676,8 @@ 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.canAddSubscribersGroup:
       case ChannelPropertyName.canDeleteAnyMessageGroup:
       case ChannelPropertyName.canDeleteOwnMessageGroup:

lib/api/model/events.g.dart

@@ -650,6 +650,7 @@ class ZulipStream {
   @JsonKey(name: 'stream_post_policy')
   ChannelPostPolicy? channelPostPolicy; // TODO(server-10) remove
   // final bool isAnnouncementOnly; // deprecated for `channelPostPolicy`; ignore
+  bool? isRecentlyActive; // TODO(server-10)
 
   GroupSettingValue? canAddSubscribersGroup; // TODO(server-10)
   GroupSettingValue? canDeleteAnyMessageGroup; // TODO(server-11)
@@ -673,6 +674,7 @@ class ZulipStream {
     required this.historyPublicToSubscribers,
     required this.messageRetentionDays,
     required this.channelPostPolicy,
+    required this.isRecentlyActive,
     required this.canAddSubscribersGroup,
     required this.canDeleteAnyMessageGroup,
     required this.canDeleteOwnMessageGroup,
@@ -696,6 +698,7 @@ class ZulipStream {
       historyPublicToSubscribers: subscription.historyPublicToSubscribers,
       messageRetentionDays: subscription.messageRetentionDays,
       channelPostPolicy: subscription.channelPostPolicy,
+      isRecentlyActive: subscription.isRecentlyActive,
       canAddSubscribersGroup: subscription.canAddSubscribersGroup,
       canDeleteAnyMessageGroup: subscription.canDeleteAnyMessageGroup,
       canDeleteOwnMessageGroup: subscription.canDeleteOwnMessageGroup,
@@ -732,6 +735,7 @@ enum ChannelPropertyName {
   messageRetentionDays,
   @JsonValue('stream_post_policy')
   channelPostPolicy,
+  isRecentlyActive,
   canAddSubscribersGroup,
   canDeleteAnyMessageGroup,
   canDeleteOwnMessageGroup,
@@ -816,6 +820,7 @@ class Subscription extends ZulipStream {
     required super.historyPublicToSubscribers,
     required super.messageRetentionDays,
     required super.channelPostPolicy,
+    required super.isRecentlyActive,
     required super.canAddSubscribersGroup,
     required super.canDeleteAnyMessageGroup,
     required super.canDeleteOwnMessageGroup,

lib/api/model/model.dart

@@ -418,6 +418,8 @@ class ChannelStoreImpl extends HasUserStore with ChannelStore {
             stream.messageRetentionDays = event.value as int?;
           case ChannelPropertyName.channelPostPolicy:
             stream.channelPostPolicy = event.value as ChannelPostPolicy;
+          case ChannelPropertyName.isRecentlyActive:
+            stream.isRecentlyActive = event.value as bool?;
           case ChannelPropertyName.canAddSubscribersGroup:
             stream.canAddSubscribersGroup = event.value as GroupSettingValue;
           case ChannelPropertyName.canDeleteAnyMessageGroup:

lib/api/model/model.g.dart

@@ -465,6 +465,7 @@ ZulipStream stream({
   bool? historyPublicToSubscribers,
   int? messageRetentionDays,
   ChannelPostPolicy? channelPostPolicy,
+  bool? isRecentlyActive,
   GroupSettingValue? canAddSubscribersGroup,
   GroupSettingValue? canDeleteAnyMessageGroup,
   GroupSettingValue? canDeleteOwnMessageGroup,
@@ -496,6 +497,7 @@ ZulipStream stream({
     historyPublicToSubscribers: historyPublicToSubscribers ?? true,
     messageRetentionDays: messageRetentionDays,
     channelPostPolicy: channelPostPolicy ?? ChannelPostPolicy.any,
+    isRecentlyActive: isRecentlyActive,
     canAddSubscribersGroup: canAddSubscribersGroup ?? GroupSettingValueNamed(nobodyGroup.id),
     canDeleteAnyMessageGroup: canDeleteAnyMessageGroup ?? GroupSettingValueNamed(nobodyGroup.id),
     canDeleteOwnMessageGroup: canDeleteOwnMessageGroup ?? GroupSettingValueNamed(nobodyGroup.id),
@@ -540,6 +542,7 @@ Subscription subscription(
     historyPublicToSubscribers: stream.historyPublicToSubscribers,
     messageRetentionDays: stream.messageRetentionDays,
     channelPostPolicy: stream.channelPostPolicy,
+    isRecentlyActive: stream.isRecentlyActive,
     canAddSubscribersGroup: stream.canAddSubscribersGroup,
     canDeleteAnyMessageGroup: stream.canDeleteAnyMessageGroup,
     canDeleteOwnMessageGroup: stream.canDeleteOwnMessageGroup,
@@ -1217,6 +1220,8 @@ ChannelUpdateEvent channelUpdateEvent(
       assert(value is int?);
     case ChannelPropertyName.channelPostPolicy:
       assert(value is ChannelPostPolicy);
+    case ChannelPropertyName.isRecentlyActive:
+      assert(value is bool?);
     case ChannelPropertyName.canAddSubscribersGroup:
     case ChannelPropertyName.canDeleteAnyMessageGroup:
     case ChannelPropertyName.canDeleteOwnMessageGroup: