Download attachment from Circuit Conversation via REST API

Question

I'd like to download an attachment from the conversation via REST API (Circuit Sandbox)

If I query the Conversation Item, I can see the attachments and within that the fileID. Then, if I am logged with a user account who is a member of the conversation, I can run the following to download the attachment or paste it in the browser where I am logged to the sandbox:

''' start chrome https://circuitsandbox.net/rest/v2/fileapi?fileid=MyFileIdHere '''

And that works. Is there a way to achieve the same with a Bot via REST?

Answer 1

A regular GET request will work.

curl https://circuitsandbox.net/rest/fileapi?fileid=<fileId> \
-H "Authorization: Bearer <ACCESS_TOKEN>"

and here is the REST notation.

GET rest/fileapi?fileid=<fileId> HTTP/1.1
Host: circuitsandbox.net
Authorization: Bearer <ACCESS_TOKEN>

The access token for a bot (client credentials grant) is obtained via OAuth 2.0:

curl https://circuitsandbox.net/oauth/token \
-d 'grant_type=client_credentials&client_id=<CLIENT_ID>&client_secret=<CLIENT_SECRET>&scope=READ_CONVERSATIONS,WRITE_CONVERSATIONS'

REST notation:

POST /oauth/token HTTP/1.1
Host: circuitsandbox.net
Content-Type: application/x-www-form-urlencoded

grant_type=client_credentials&client_id=<CLIENT_ID>&client_secret=<CLIENT_SECRET>&scope=READ_CONVERSATIONS,WRITE_CONVERSATIONS'