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Last updated: 2023-07-20 10:45:16

    Feature Description

    You can merge and forward messages in the following steps:
    1. Create a merged message based on the list of original messages.
    2. Send the merged message to the receiver.
    3. The receiver receives the merged message and parses the list of original messages.
    The title and digest are needed to display the merged message, as shown below:
    Merge and Forward
    Display of Merged Message
    Click Merged Message to Download Message List for Display
    
    
    
    
    
    
    
    
    
    
    

    Creating a Merged Message

    This API is used to create a merged message. It returns a message instance, which can be sent by calling the sendMessage API when you need to send a merged message.
    Note
    1. Unable to merge messages that failed to be sent. If the message list contains a message that failed to be sent, the API will report an error.
    API
    chat.createMergerMessage(options);
    Parameter
    The options parameter is of the Object type. It contains the following attribute values:
    Name
    Type
    Default
    Description
    to
    String
    -
    userID or groupID of the message receiver
    conversationType
    String
    -
    Conversation type. Valid values:
    TencentCloudChat.TYPES.CONV_C2C (one-to-one conversation)
    TencentCloudChat.TYPES.CONV_GROUP (group conversation)
    priority
    String
    TencentCloudChat.TYPES.MSG_PRIORITY_NORMAL
    Message priority. If messages in a group exceed the frequency limit, the backend will deliver high-priority messages first. Supported enumerated values:
    TencentCloudChat.TYPES.MSG_PRIORITY_HIGH
    TencentCloudChat.TYPES.MSG_PRIORITY_NORMAL (default)
    TencentCloudChat.TYPES.MSG_PRIORITY_LOW
    TencentCloudChat.TYPES.MSG_PRIORITY_LOWEST
    payload
    Object
    -
    Message content container
    cloudCustomData
    String
    ''
    Custom message data, which is saved in the cloud, will be sent to the receiver, and can still be pulled after the application is uninstalled and reinstalled.
    The payload is as described below:
    Name
    Type
    Description
    messageList
    Array
    Merged message list
    title
    String
    Title of merged messages, for example, "Chat History of the Talent Center in the Greater Bay Area"
    abstractList
    String
    Digest list. You can set digest information in different formats for different message types, for example, in the sender:text format for a text message, in the sender:[image] format for an image message, or in the sender:[file] format for a file message.
    compatibleText
    String
    Compatibility text. If the early SDK version does not support the merged message, the user will receive a text message with the content ${compatibleText} by default. This field is required.
    Returned value
    Message
    Sample
    // 1. Forward group messages to a one-to-one conversation.
    // `message1`, `message2`, and `message3` are group messages.
    let mergerMessage = chat.createMergerMessage({
    to: 'user1',
    conversationType: TencentCloudChat.TYPES.CONV_C2C,
    payload: {
    messageList: [message1, message2, message3],
    title: 'Chat History of the Talent Center in the Greater Bay Area',
    abstractList: ['allen: 666', 'iris: [Image]', 'linda: [File]'],
    compatibleText: 'Upgrade your IM SDK to v2.10.1 or later to view this message.'
    },
    // cloudCustomData: 'your cloud custom data'
    });
    
    // 2. Send the message.
    let promise = chat.sendMessage(mergerMessage);
    promise.then(function(imResponse) {
    // Message sent successfully
    console.log(imResponse);
    }).catch(function(imError) {
    // Failed to send the message
    console.warn('sendMessage error:', imError);
    });

    Downloading a Merged Message

    This API is used to download a merged message. When the merged message sent by the sender is large in size, the SDK will store it in the cloud, and the message receiver needs to download it from the cloud before viewing it.
    API
    chat.downloadMergerMessage(message);
    Parameter
    Name
    Type
    Description
    message
    Message
    Message instance
    Returned value
    Promise
    Sample
    // If `downloadKey` exists, the received merged message is stored in the cloud
    // and needs to be downloaded first.
    if (message.type === TencentCloudChat.TYPES.MSG_MERGER && message.payload.downloadKey !== '') {
    let promise = chat.downloadMergerMessage(message);
    promise.then(function(imResponse) {
    // After the download is successful
    // the SDK will update information such as `message.payload.messageList`.
    console.log(imResponse.data);
    }).catch(function(imError) {
    // Download failed
    console.warn('downloadMergerMessage error:', imError);
    });
    }

    Forwarding Messages One by One

    To forward a single message, create a message identical to the original message through the createForwardMessage API first, and then call the sendMessage API to send the message.
    API
    chat.createForwardMessage(message);
    Parameter
    Name
    Type
    Description
    message
    Message
    Message instance
    Returned value
    Message
    Sample
    let forwardMessage = chat.createForwardMessage({
    to: 'user1',
    conversationType: TencentCloudChat.TYPES.CONV_C2C,
    payload: message, // Message instance for the received or sent message
    // cloudCustomData: 'your cloud custom data'
    });
    // 2. Send the message.
    let promise = chat.sendMessage(forwardMessage);
    promise.then(function(imResponse) {
    // Message sent successfully
    console.log(imResponse);
    }).catch(function(imError) {
    // Failed to send the message
    console.warn('sendMessage error:', imError);
    });
    
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