Select elements from json array based on 2 criteria - json

Question

I am fetching the list of issue comments on a specific PR with the following curl command
curl -sH "Accept: application/vnd.github+json" -H "Authorization: token XXXXXXXXXX" https://api.github.com/repos/org/repo/issues/12/comments
The response format is according to the documentation as follows:
[
{
"id": 1,
"node_id": "MDEyOklzc3VlQ29tbWVudDE=",
"url": "https://api.github.com/repos/octocat/Hello-World/issues/comments/1",
"html_url": "https://github.com/octocat/Hello-World/issues/1347#issuecomment-1",
"body": "Me too",
"user": {
"login": "octocat",
"id": 1,
"node_id": "MDQ6VXNlcjE=",
"avatar_url": "https://github.com/images/error/octocat_happy.gif",
"gravatar_id": "",
"url": "https://api.github.com/users/octocat",
"html_url": "https://github.com/octocat",
"followers_url": "https://api.github.com/users/octocat/followers",
"following_url": "https://api.github.com/users/octocat/following{/other_user}",
"gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
"starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
"organizations_url": "https://api.github.com/users/octocat/orgs",
"repos_url": "https://api.github.com/users/octocat/repos",
"events_url": "https://api.github.com/users/octocat/events{/privacy}",
"received_events_url": "https://api.github.com/users/octocat/received_events",
"type": "User",
"site_admin": false
},
"created_at": "2011-04-14T16:00:49Z",
"updated_at": "2011-04-14T16:00:49Z",
"issue_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347",
"author_association": "COLLABORATOR"
}
]
I know that I can get the last comment's author's username by piping the output to jq '.[-1].user.login'
How can I get from ALL the comments matching user.login=foobar the most recent one?

Answer 1

select is the function that filters by criteria.
Use with map to retain the array structure
jq 'map(select(.user.login == "foobar"))'
Or iterate and get just the matching items
jq '.[] | select(.user.login == "foobar")'