GroupChannelHandler

Group channel event handler.

Listens for group-related event notifications, including:

• Operations: group creation, member join/quit/kick, group dismissal, manager promotion/demotion, and ownership transfer

• Info changes: group name, portrait, notice, permissions, and other property updates

• Member changes: member nickname, extra info, and other profile updates within a group

• Applications: join requests, invitation requests, and their approval/rejection results

• Favorites sync: special-follow (favorites) changes synced across devices

Register via NCEngine.addGroupChannelHandler. All callback methods have default empty implementations; override only the callbacks you need.

NCEngine.addGroupChannelHandler("GROUP_HANDLER_ID", object : GroupChannelHandler {
    override fun onGroupOperation(event: GroupOperationEvent) {
        println("Group ${event.groupId} operation: ${event.operation}")
    }

    override fun onGroupInfoChanged(event: GroupInfoChangedEvent) {
        println("Group info changed, properties: ${event.changedProperties}")
    }

    override fun onGroupApplicationEvent(event: GroupApplicationEvent) {
        println("Group application: ${event.info.groupId}, type: ${event.info.type}")
    }
})