api: Add realmDefaultExtrenalAccounts

Author: sirpengi

lib/api/model/initial_snapshot.dart

@@ -39,6 +39,8 @@ class InitialSnapshot {
   // TODO(server-5) remove pre-5.0 comment
   final UserSettings? userSettings; // TODO(server-5)
 
+  final Map<String, RealmDefaultExternalAccount> realmDefaultExternalAccounts;
+
   final int maxFileUploadSizeMib;
 
   @JsonKey(readValue: _readUsersIsActiveFallbackTrue)
@@ -76,6 +78,7 @@ class InitialSnapshot {
     required this.zulipVersion,
     this.zulipMergeBase,
     required this.alertWords,
+    required this.realmDefaultExternalAccounts,
     required this.customProfileFields,
     required this.recentPrivateConversations,
     required this.subscriptions,
@@ -94,6 +97,30 @@ class InitialSnapshot {
   Map<String, dynamic> toJson() => _$InitialSnapshotToJson(this);
 }
 
+/// An item in `realm_default_external_accounts`.
+///
+/// For docs, search for "realm_default_external_accounts:"
+/// in <https://zulip.com/api/register-queue>.
+@JsonSerializable(fieldRename: FieldRename.snake)
+class RealmDefaultExternalAccount {
+  final String name;
+  final String text;
+  final String hint;
+  final String urlPattern;
+
+  RealmDefaultExternalAccount({
+    required this.name,
+    required this.text,
+    required this.hint,
+    required this.urlPattern,
+  });
+
+  factory RealmDefaultExternalAccount.fromJson(Map<String, dynamic> json) =>
+    _$RealmDefaultExternalAccountFromJson(json);
+
+  Map<String, dynamic> toJson() => _$RealmDefaultExternalAccountToJson(this);
+}
+
 /// An item in `recent_private_conversations`.
 ///
 /// For docs, search for "recent_private_conversations:"

lib/api/model/initial_snapshot.g.dart

@@ -151,6 +151,7 @@ class PerAccountStore extends ChangeNotifier {
     required InitialSnapshot initialSnapshot,
   }) : zulipVersion = initialSnapshot.zulipVersion,
        maxFileUploadSizeMib = initialSnapshot.maxFileUploadSizeMib,
+       realmDefaultExternalAccounts = initialSnapshot.realmDefaultExternalAccounts,
        userSettings = initialSnapshot.userSettings,
        users = Map.fromEntries(
          initialSnapshot.realmUsers
@@ -172,6 +173,7 @@ class PerAccountStore extends ChangeNotifier {
   // Data attached to the realm or the server.
   final String zulipVersion; // TODO get from account; update there on initial snapshot
   final int maxFileUploadSizeMib; // No event for this.
+  final Map<String, RealmDefaultExternalAccount> realmDefaultExternalAccounts;
 
   // Data attached to the self-account on the realm.
   final UserSettings? userSettings; // TODO(server-5)