Send and receive messages

// Since In-app Chat 2.3.0, the SDK uses the AppSign authentication mode by default. To change the authentication mode:
// 1. For SDK 2.3.3 or later, you can change the authentication mode by yourself.  2. For SDK 2.3.0 or later, if you want to change your authentication mode back to using the Token, contact Technical Support.

// Use a static synchronized method to create a ZIM SDK object and pass the AppID and AppSign. 
// The create method creates a ZIM instance only the first time it is called. Any subsequent use will return null. 
ZIM.create({ appID: 0, appSign: '' });
// Please get a single instance via the getInstance method to avoid hot updates that return null multiple times using the create method.
var zim = ZIM.getInstance();

// Set up and listen for the callback for receiving error codes.  
zim.on('error', function (zim, errorInfo) {
    console.log('error', errorInfo.code, errorInfo.message);
});

// Set up and listen for the callback for connection status changes. 
zim.on('connectionStateChanged', function (zim, { state, event, extendedData }) {
    console.log('connectionStateChanged', state, event, extendedData);
});

// Set up and listen for the callback for receiving one-to-one messages. 
zim.on('peerMessageReceived', function (zim, { messageList, info, fromConversationID }) {
    console.log('peerMessageReceived', messageList, info, fromConversationID);
});

// Register a callback to listen for "Token is about to expire"
zim.on('tokenWillExpire', function (zim, { second }) {
    console.log('tokenWillExpire', second);
    // You can call the renewToken interface here to update the token
    // For new token generation, please refer to the above
    zim.renewToken(token)
        .then(function({ token }){
            // Update successful
        })
        .catch(function(err){
            // Update failed
        })
});

// userID must be within 32 characters, and can only contain letters, numbers, and the following special characters: '~', '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', '=', '-', '`', ';', '’', ',', '.', '<', '>', '/', '\'.
// userName A string of up to 256 bytes, with no restrictions on special characters.
var userInfo = { userID: 'xxxx', userName: 'xxxx' };
var userID = 'xxxx';
var config = {
   userName: 'xxxx',
     token: '',
 }



// When logging in:
// If you use the Token-based authentication, pass the Token you get by referring to the [Guides - Authentication] document.
// If you use the AppSign authentication mode (the default auth mode by SDK 2.3.0), you need to leave the Token field empty. 

zim.login(userID, config)
    .then(function () {
        // Login successful.
    })
    .catch(function (err) {
        // Login failed.
    });

// The following shows to send a one-to-one message, set the ZIMConversationType to Peer. 
var toUserID = 'xxxx1';
var config = { 
    priority: 1 // Set priority for the message. 1: Low (by default). 2: Medium. 3: High.
};
var type = 0; // Session type. Values are: 0: One-on-one chat.  1: Chat room  2: Group chat.
var notification = {
    onMessageAttached: function(message) {
        // todo: Loading
    }
};

// Send one-to-one text messages. 
var messageTextObj = { type: 1, message: 'Text message content' };
zim.sendMessage(messageTextObj, toUserID, type, config, notification)
    .then(function ({ message }) {
        // Message sent successfully.
    })
    .catch(function (err) {
        // Failed to send the message.
    });

// Set up and listen for the callback for receiving the one-to-one messages.
zim.on('receivePeerMessage', function (zim, { messageList, fromConversationID }) {
    console.log('receivePeerMessage', messageList, fromConversationID);
});

zim.logout();

zim.destroy();