[JAMES-3373] Implement JMAP downloads

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.6.0
• Component/s: JMAP
• Assignee: Antoine Duprat
• Reporter: Benoit Tellier
• Created: 11/Sep/20 09:26
• Updated: 29/Sep/20 03:45
• Resolved: 15/Sep/20 10:39

Description

Regarding the JMAP specifications concerning downloading blobs : https://jmap.io/spec-core.html#downloading-binary-data

The JMAP draft version already manages the download of attachments and full messages, thus:

• Port download route from JMAP draft version.
• Make sure it works for full message and attachment
• Handle error:
  + Failed to Authenticate
  + No right to download
  + Resources not found
  + Parameters missing or wrong format

We need as well to propose an URL including the following parameters:

• *accountId*: The id of the account to which the record with the blobId belongs
• *blobId*: The blobId representing the data of the file to download
• *type*: The type for the server to set in the Content-Type header of the response; the blobId only represents the binary data and does not have a content-type innately associated with it
• *name*: The name for the file; the server MUST return this as the filename if it sets a Content-Disposition header

A proposed URL would be: `/download/$accountId/$blobId/?type=$type&name=$name`

DOD:

• Make sure it work for download full message or attachment
• Write integration test
• Update the session object with the new download URL