SDK Introduction

// Chat Manager
// Responsible for message-related CRUD operations like sending messages, deleting messages, 
// recalling messages, listening to chat messages, etc.
WKSDK.shared.chatManager

// Connection Manager
// Responsible for establishing or disconnecting connections with IM, 
// monitoring IM connection status, etc.
WKSDK.shared.connectionManager

// Channel Manager
// Responsible for channel data retrieval, caching and channel settings 
// like pinning, do not disturb, muting, etc.
WKSDK.shared.channelManager

// Conversation Manager
// Responsible for maintaining recent conversation data like unread counts, 
// drafts, @mentions, last messages, etc.
WKSDK.shared.conversationManager

// Reaction Manager
// Responsible for maintaining like/reaction data
WKSDK.shared.reactionManager

// CMD Manager
// Responsible for listening to command-type messages sent from the server
WKSDK.shared.cmdManager

// Receipt Manager
// Responsible for maintaining read/unread status of messages
WKSDK.shared.receiptManager

// Reminder Manager
// Responsible for reminder items in recent conversations like @mentions, 
// group join requests, etc. Also supports custom reminders like WeChat's 
// [Red Packet] [Transfer] list reminders
WKSDK.shared.reminderManager

// Media Manager
// Responsible for uploading and downloading multimedia files in messages 
// like images, videos, and other messages with attachments
WKSDK.shared.mediaManager

// Send message through chatManager
[WKSDK.shared.chatManager sendMessage:xxx]

// Listen to message status changes through chatManager's delegate
-(void) onMessageUpdate:(WKMessage*) message  {
    if(message.status == SUCCESS) {
      [self updateItemUIWithSuccess:message];
    }else {
       [self updateItemUIWithFail:message];
    }
}