api: Add channelFolders to initial snapshot

Author: chrisbobbe

lib/api/model/initial_snapshot.dart

@@ -52,6 +52,8 @@ class InitialSnapshot {
 
   final List<Subscription> subscriptions;
 
+  final List<ChannelFolder>? channelFolders; // TODO(server-11)
+
   final UnreadMessagesSnapshot unreadMsgs;
 
   final List<ZulipStream> streams;
@@ -168,6 +170,7 @@ class InitialSnapshot {
     required this.recentPrivateConversations,
     required this.savedSnippets,
     required this.subscriptions,
+    required this.channelFolders,
     required this.unreadMsgs,
     required this.streams,
     required this.userStatuses,

lib/api/model/initial_snapshot.g.dart

@@ -839,6 +839,38 @@ class Subscription extends ZulipStream {
   Map<String, dynamic> toJson() => _$SubscriptionToJson(this);
 }
 
+/// As in `channel_folders` in the initial snapshot.
+///
+/// For docs, search for "channel_folders:"
+/// in <https://zulip.com/api/register-queue>.
+@JsonSerializable(fieldRename: FieldRename.snake)
+class ChannelFolder {
+  final int id;
+  final String name;
+  final int? order; // TODO(server-11); added in a later FL than the rest
+  final int? dateCreated;
+  final int? creatorId;
+  final String description;
+  final String renderedDescription;
+  final bool isArchived;
+
+  ChannelFolder({
+    required this.id,
+    required this.name,
+    required this.order,
+    required this.dateCreated,
+    required this.creatorId,
+    required this.description,
+    required this.renderedDescription,
+    required this.isArchived,
+  });
+
+  factory ChannelFolder.fromJson(Map<String, dynamic> json) =>
+    _$ChannelFolderFromJson(json);
+
+  Map<String, dynamic> toJson() => _$ChannelFolderToJson(this);
+}
+
 @JsonEnum(fieldRename: FieldRename.snake, valueField: "apiValue")
 enum UserTopicVisibilityPolicy {
   none(apiValue: 0),

lib/api/model/model.dart

@@ -1276,6 +1276,7 @@ InitialSnapshot initialSnapshot({
   List<RecentDmConversation>? recentPrivateConversations,
   List<SavedSnippet>? savedSnippets,
   List<Subscription>? subscriptions,
+  List<ChannelFolder>? channelFolders,
   UnreadMessagesSnapshot? unreadMsgs,
   List<ZulipStream>? streams,
   Map<int, UserStatusChange>? userStatuses,
@@ -1332,6 +1333,7 @@ InitialSnapshot initialSnapshot({
     recentPrivateConversations: recentPrivateConversations ?? [],
     savedSnippets: savedSnippets ?? [],
     subscriptions: subscriptions ?? [], // TODO add subscriptions to default
+    channelFolders: channelFolders ?? [],
     unreadMsgs: unreadMsgs ?? _unreadMsgs(),
     streams: streams ?? [], // TODO add streams to default
     userStatuses: userStatuses ?? {},