modify json with jq - json

Question

I would like to use JQ to modify the following JSON input:
[
{
"description": "",
"created_on": "2021-12-27T11:32:03.171682Z",
"modified_on": "2021-12-27T11:32:03.171682Z",
"id": "test",
"enabled": true,
"minimum_origins": 1,
"monitor": "test",
"name": "test",
"notification_email": "",
"check_regions": null,
"latitude": 43.7417,
"longitude": -79.3733,
"notification_filter": {
"pool": {}
},
"healthy": true,
"origins": [
{
"name": "AAAA",
"address": "1.1.1.1",
"enabled": true,
"weight": 1,
"healthy": true,
"failure_reason": "No failures"
},
{
"name": "BBBB",
"address": "2.2.2.2",
"enabled": true,
"weight": 1,
"healthy": true,
"failure_reason": "No failures"
}
]
}
]
if address == 1.1.1.1 then weight 0
that's what i expect
[
{
"name": "test",
"origins": [
{
"name": "AAAA",
"address": "1.1.1.1",
"enabled": true,
"weight": 0,
"healthy": true,
"failure_reason": "No failures"
},
{
"name": "BBBB",
"address": "2.2.2.2",
"enabled": true,
"weight": 1,
"healthy": true,
"failure_reason": "No failures"
}
]
}
]
my best attempt but it doesn't fit my format. I tried many different options but could not find the correct code
(.[].origins[] | select(.address == "1.1.1.1") | .weight ) |= 0

Answer 1

Either perform setting the value first (where you could simply use = to set the new value as it does not depend on the old one), then use map({name, origins}) to get your expected output reduction:
(.[].origins[] | select(.address == "1.1.1.1")).weight = 0
| map({name, origins})
Demo
Or combine both within the map in one go:
map(
{name, origins}
| .origins[] |= (select(.address == "1.1.1.1").weight = 0)
)
Demo
Output:
[
{
"name": "test",
"origins": [
{
"name": "AAAA",
"address": "1.1.1.1",
"enabled": true,
"weight": 0,
"healthy": true,
"failure_reason": "No failures"
},
{
"name": "BBBB",
"address": "2.2.2.2",
"enabled": true,
"weight": 1,
"healthy": true,
"failure_reason": "No failures"
}
]
}
]

Answer 2

Here's a slightly different version, but pmf's answer is preferable.
map({
name,
origins: .origins | map(select(.address=="1.1.1.1").weight = 0)
})

Answer 3

If for whatever reason you want to avoid assignments with complex left-hand-sides (e.g., if you want portability across various versions of jq and jq look-alikes):
map( {name, origins}
| .origins |= map( if .address == "1.1.1.1" then .weight = 0 else . end) )