[API Request] Allow sort order for getAlbumList2

[jeffvli]

Type of change

API tweak

Proposal description

Would also be used for other list endpoints such as #18.

There's currently no way to change the sort order for getAlbumList2 besides using fromYear and toYear to reverse the chronological sort.

An example grievance would be using type=alphabeticalByName and then having to paginate through your entire library to reach an album that starts with the letter Z. This becomes more difficult with larger libraries.

This proposal would add an optional parameter order to set descending or ascending sort for the resulting query.

Backward compatibility impact

If order is omitted, the sort order will use the original order set by the type parameter.

Backward compatibility

• No backward compatibility impact.

API details

Parameters:
- order -- accepts a string of either "desc" or "asc"

GET /getAlbumList2?type=alphabeticalByName&order=desc

{
  "subsonic-response": {
    "status": "ok",
    "version": "1.16.1",
    "type": "AwesomeServerName",
    "serverVersion": "0.1.3 (tag)",
    "albumList2": {
      "album": [
        {
          "title": "Z - Forget and Remember",
          "name": "Z - Forget and Remember",
        },
        {
          "title": "X - Buried in Nausea",
          "name": "X - Buried in Nausea",
        }
      ]
    }
  }
}

Security impacts

No response

Potential issues

No response

Alternative solutions

It can be argued that if a user wanted to find something specific, they could just use the search3 endpoint to find what they're looking for instead of needing to reverse the sort order. But I think having a way to set the sort order on the list would greatly improve the user experience if a user did not know exactly what they were looking for.

[dweymouth]

Related to #7