上一篇文章讲到了如何使用最新的Graph API来给一个用户发送一个简单的 Activity Feed。我们这篇文章来详细讲一下发送三种不同类型的消息。

发送 Chat 相关的 Activity Notification

API 为 POST https://graph.microsoft.com/beta/chats/{chat-id}/sendActivityNotification

http请求的内容为：

{"topic": {"source": "entityUrl","value": "https://graph.microsoft.com/beta/chats/{chat-id}"},"activityType": "taskCreated","previewText": {"content": "New Task Created"},"recipient": {"@odata.type": "microsoft.graph.aadUserNotificationRecipient","userId": "569363e2-1111-2222-3333-16f245c5d66a"},"templateParameters": [{"name": "taskId","value": "Task 12322"}] 
}

其中 activityType 和 templateParameters 我已经在前面一篇文章中介绍过，previewText 从名字上也很容易理解，是推送的消息的文本内容，recipient 是接受推送消息的用户的 id 信息。

这里比较关键的是 topic，这个指明了这个推送的消息是针对哪个聊天 (chat) 或者哪个 聊天消息 (chatMessage) 的，如果是针对 chat 的，那么 topic 里的 value 就是 https://graph.microsoft.com/beta/chats/{chat-id} 这种格式，如果是 chatMessage，格式就是 https://graph.microsoft.com/beta/chats/{chat-id}/messages/{message-id}

大家可能会问，如何获得这个 chat id 和 message id 呢，这两个可以在发送 message 是返回，或者也可以通过调用 graph api 来获取。

发送 Team 相关的 Activity Notification

API 为 POST https://graph.microsoft.com/beta/teams/{teamId}/sendActivityNotification

http请求的内容和之前的很像：

{"topic": {"source": "entityUrl","value": "https://graph.microsoft.com/beta/teams/{team-id}"},"activityType": "pendingFinanceApprovalRequests","previewText": {"content": "Internal spending team has a pending finance approval requests"},"recipient": {"@odata.type": "microsoft.graph.aadUserNotificationRecipient","userId": "569363e2-1111-2222-3333-16f245c5d66a"},"templateParameters": [{"name": "pendingRequestCount","value": "5"}]
}

它支持的 entity url 有好几种：

• team，格式为 https://graph.microsoft.com/beta/teams/{team-id}
• channel，格式为 https://graph.microsoft.com/beta/teams/{team-id}/channels/{channel-id}
• chatMesage，格式为 https://graph.microsoft.com/beta/teams/{team-id}/channels/{channel-id}/messages/{message-id}
• teamsTab，格式为 https://graph.microsoft.com/beta/teams/{team-id}/channels/{channel-id}/tabs/{tab-id}

发送 User 相关的 Activity Notification

API 为 POST https://graph.microsoft.com/beta/users/{userId}/teamwork/sendActivityNotification

http请求的内容和之前的很像：

{"topic": {"source": "entityUrl","value": "https://graph.microsoft.com/beta/users/{user-id}/teamwork/installedApps/{installation-id}"},"activityType": "taskCreated","previewText": {"content": "New Task Created"},"templateParameters": [{"name": "taskId","value": "Task 342342"}]
}

它支持的 entity url 有两种：

• teamsAppInstallation，格式为 https://graph.microsoft.com/beta/users/{user-id}/teamwork/installedApps/{installation-id}
• teamsCatalogApp，格式为 https://graph.microsoft.com/beta/appCatalogs/teamsApps/{app-id}