tencent cloud

chat.setMessageExtensions(message, extensions);

let promise = chat.setMessageExtensions(message, [{ key: 'a', value: '1' }, { key: 'b', value: '2' }]);
promise.then(function(imResponse) {
  // 设置消息扩展成功
   const { extensions } = imResponse.data;
   extensions.forEach((item) => {
     const { code, key, value } = item;
     if (code === 23001) {
       // 设置 key 冲突，请根据返回的最新扩展信息，按需进行重试
     }
   });
}).catch(function(imError) {
  // 设置消息扩展失败
  console.warn('setMessageExtensions error:', imError);
});

chat.getMessageExtensions(message);

let promise = chat.getMessageExtensions(message);
promise.then(function(imResponse) {
  // 获取消息扩展成功
   const { extensions } = imResponse.data;
   extensions.forEach((item) => {
     const { key, value } = item;
     // key - 消息扩展 key
     // value - 消息扩展 key 对应的 value 值
   });
}).catch(function(imError) {
  // 获取消息扩展失败
  console.warn('getMessageExtensions error:', imError);
});

chat.deleteMessageExtensions(message, keyList);

// 删除消息扩展 key
let promise = chat.deleteMessageExtensions(message, ['a', 'b']);
promise.then(function(imResponse) {
   // 删除消息扩展成功
   const { extensions } = imResponse.data;
   extensions.forEach((item) => {
     const { code, key, value } = item;
     if (code === 23001) {
       // 删除 key 冲突，请根据返回的最新扩展信息，按需进行重试
     }
   });
}).catch(function(imError) {
  // 删除消息扩展失败
  console.warn('deleteMessageExtensions error:', imError);
});

// 清空所有消息扩展 key
let promise = chat.deleteMessageExtensions(message);
promise.then(function(imResponse) {
   // 清空消息扩展成功
   console.log('deleteMessageExtensions ok:', imResponse)
}).catch(function(imError) {
  // 清空消息扩展失败
  console.warn('deleteMessageExtensions error:', imError);
});

let onMessageExtensionsUpdated = function(event) {
  const { messageID, extensions } = event.data;
  // messageID - 消息 ID
  // extensions - 消息扩展信息
  extensions.forEach((item) => {
   const { key, value } = item;
   // key - 消息扩展 key
   // value - 消息扩展 key 对应的 value 值
  });
};
chat.on(TencentCloudChat.EVENT.MESSAGE_EXTENSIONS_UPDATED, onMessageExtensionsUpdated);

let onMessageExtensionsDeleted = function(event) {
  const { messageID, keyList } = event.data;
  // messageID - 消息 ID
  // keyList - 被删除的消息扩展 key 列表
  keyList.forEach((key) => {
   // console.log(key)
  });
};
chat.on(TencentCloudChat.EVENT.MESSAGE_EXTENSIONS_DELETED, onMessageExtensionsDeleted);